Lu Y

References (103)

Title : Effect of entomopathogenic fungi on behavior and physiology of Solenopsis invicta (Hymenoptera, Formicidae) - Hassan_2024_J.Econ.Entomol__
Author(s) : Hassan A , Kang L , Zhang K , Wang L , Qin X , Fang G , Lu Y , Huang Q
Ref : J Econ Entomol , : , 2024
Abstract : In an ant colony, a large number of nestmates with a similar gene pool coexist, making them more vulnerable to pathogenic attacks. These pathogens influence the behavior and physiology of the fire ant Solenopsis invicta Buren. Here, we evaluated the impact of entomopathogenic fungi (EPF) Metarhizium anisopliae on the behavior (locomotion and foraging) and physiology (biological molecules, anti-fungal activity, and survival) of S. invicta. Distance traveled and velocity significantly decreased, while turn angle and angular velocity significantly increased in ants exposed to a higher concentration of M. anisopliae compared to ants exposed to control after 36 h, which showed disturbed locomotion. Fungus infection significantly affected the foraging behavior of ants. Fungus-exposed ants spent significantly less time in the food zone (area with food) than in the inner zone (area without food). The activities of 4 enzymes, peroxidase, glutathione-S-transferase, hydrogen peroxide (H2O2), and carboxylesterase were significantly decreased. In contrast, catalase and anti-fungal activities were increased after fungal exposure compared to the control. The activity of acetylcholinesterase, which hydrolyses the important neurotransmitter acetylcholine, also decreased after fungal application compared to the control. Survival of ants was also significantly reduced after fungus infection compared to the control. Our findings help to understand the influence of M. anisopliae on the behavior and physiology of S. invicta, which will help in the management of S. invicta using the EPF M. anisopliae.
ESTHER : Hassan_2024_J.Econ.Entomol__
PubMedSearch : Hassan_2024_J.Econ.Entomol__
PubMedID: 38634604

Title : Screening of Active Substances Regulating Alzheimer's Disease in Ginger and Visualization of the Effectiveness on 6-Gingerol Pathway Targets - Pan_2024_Foods_13_
Author(s) : Pan Y , Li Z , Zhao X , Du Y , Zhang L , Lu Y , Yang L , Cao Y , Qiu J , Qian Y
Ref : Foods , 13 : , 2024
Abstract : Ginger has been reported to potentially treat Alzheimer's disease (AD), but the specific compounds responsible for this biological function and their mechanisms are still unknown. In this study, a combination of network pharmacology, molecular docking, and dynamic simulation technology was used to screen active substances that regulate AD and explore their mechanisms. The TCMSP, GeneCards, OMIM, and DisGeNET databases were utilized to obtain 95 cross-targets related to ginger's active ingredients and AD as key targets. A functional enrichment analysis revealed that the pathways in which ginger's active substances may be involved in regulating AD include response to exogenous stimuli, response to oxidative stress, response to toxic substances, and lipid metabolism, among others. Furthermore, a drug-active ingredient-key target interaction network diagram was constructed, highlighting that 6-Gingerol is associated with 16 key targets. Additionally, a protein-protein interaction (PPI) network was mapped for the key targets, and HUB genes (ALB, ACTB, GAPDH, CASP3, and CAT) were identified. Based on the results of network pharmacology and cell experiments, 6-Gingerol was selected as the active ingredient for further investigation. Molecular docking was performed between 6-Gingerol and its 16 key targets, and the top three proteins with the strongest binding affinities (ACHE, MMP2, and PTGS2) were chosen for molecular dynamics analysis together with the CASP3 protein as the HUB gene. The findings indicate that 6-Gingerol exhibits strong binding ability to these disease targets, suggesting its potential role in regulating AD at the molecular level, as well as in abnormal cholinesterase metabolism and cell apoptosis, among other related regulatory pathways. These results provide a solid theoretical foundation for future in vitro experiments using actual cells and animal experiments to further investigate the application of 6-Gingerol.
ESTHER : Pan_2024_Foods_13_
PubMedSearch : Pan_2024_Foods_13_
PubMedID: 38397589

Title : Ganshuang granule plays a pharmacological role in anti-alcoholic and anti-hangover via regulating alcohol metabolism and affecting neurotransmitters - Li_2024_Int.J.Neurosci__1
Author(s) : Li Q , Lu Y , Shang J , Song Q , Jiao J , Bi L , Jiang T , Liu X
Ref : International Journal of Neuroscience , :1 , 2024
Abstract : Background: To explore the effect of Ganshuang granule on anti-alcoholic and anti-hangover and its potential mechanism.Methods: SPF SD rats' drunken model and SPF Kunming mice's hangover model were used as models.Results: Ganshuang granule could significantly reduce sleep time, the time to climb in mice, and significantly prolong the tolerance time and shorten sleep time in rats (P < 0.05). The blood ethanol concentration of rats in each administration group was lower than that in the model group at each time point (P < 0.05). Compared with the control group, the activities of ADH and ALDH in the liver of the model group were significantly decreased (P < 0.05); the content of DA and 5-HT in the striatum of the model group was significantly increased (P < 0.05); and the activity of AchE in the hippocampus was significantly decreased (P < 0.05). The above processes could be improved and regulated in the drug administration group. Compared with the control group, there was no significant difference between ADH and ALDH in the serum of the model group (P > 0.05). However, the activities of ADH and ALDH in the liver of drunk rats could be upregulated by Ganshuang granule (P < 0.05).Conclusion: Ganshuang granule has the pharmacological effects of anti-alcoholic and anti-hangover, which is related to regulating the activities of ADH and ALDH in the liver, the contents of DA and 5-HT in striatum, and the activity of AchE in the hippocampus.
ESTHER : Li_2024_Int.J.Neurosci__1
PubMedSearch : Li_2024_Int.J.Neurosci__1
PubMedID: 38197183

Title : Pharmacokinetics, Pharmacodynamics, and Safety of Single Dose HSK7653 Tablets in Chinese Subjects with Normal or Impaired Renal Function - Shi_2024_Clin.Pharmacokinet__
Author(s) : Shi D , Chen L , Li G , Wu N , Zhang F , Wang X , Mu N , Chen X , Yang X , Lu J , Lu Y , Wang M , Zhang D
Ref : Clinical Pharmacokinetics , : , 2024
Abstract : OBJECTIVE: HSK7653 is a novel, ultralong-acting dipeptidyl peptidase-4 (DPP-4) inhibitor, promising for type 2 diabetes mellitus with a dosing regimen of once every 2 weeks. This trial investigates the pharmacokinetics (PKs), pharmacodynamics (PDs),and safety of HSK7653 in outpatients with normal or impaired renal function. METHODS: This is a multicenter, open-label, nonrandomized, parallel-controlled phase I clinical study that investigates the pharmacokinetic profiles of HSK7653 after a single oral administration in 42 subjects with mild (n = 8), moderate (n = 10), severe renal impairment (n = 10), and end-stage renal disease (without dialysis, n = 5) compared with matched control subjects with normal renal function (n = 9). Safety was evaluated throughout the study, and the pharmacodynamic effects were assessed on the basis of a DPP-4 inhibition rate. RESULTS: HSK7653 exposure levels including the maximum plasma concentration (C(max)), area under the plasma concentration-time curve from zero to last time of quantifiable concentration (AUC(0-t)), and area under the plasma concentration-time curve from zero to infinity (AUC(0-inf)) showed no significant differences related to the severity of renal impairment. Renal clearance (CL(R)) showed a certain downtrend along with the severity of renal impairment. The CL(R) of the group with severe renal impairment and the group with end-stage renal disease were basically similar. The DPP-4 inhibition rate-time curve graph was similar among the renal function groups. All groups had favorable safety, and no serious adverse events occurred. CONCLUSIONS: HSK7653 is a potent oral DPP-4 inhibitor with a long plasma half-life, supporting a dosing regimen of once every 2 weeks. Impaired renal function does not appear to impact the pharmacokinetic and pharmacodynamic properties of HSK7653 after a single administration in Chinese subjects. HSK7653 is also well tolerated without an increase in adverse events with increasing renal impairment. These results indicate that dose adjustment of HSK7653 may not be required in patients with renal impairment. TRIAL REGISTRATION: Identifier: NCT05497297.
ESTHER : Shi_2024_Clin.Pharmacokinet__
PubMedSearch : Shi_2024_Clin.Pharmacokinet__
PubMedID: 38184489

Title : Expanding the clinical spectrum of anti-DPPX encephalitis: a multicenter retrospective study - Gao_2024_Front.Neurosci_18_1379933
Author(s) : Gao Y , Zhang Y , Chunyu H , Xu Y , Wang Y , Liu S , Chang J , Tang B , Xu C , Lu Y , Zhou J , Kong X , Zhu X , Chen S , Zhou Q , Meng H
Ref : Front Neurosci , 18 :1379933 , 2024
Abstract : OBJECTIVE: Anti-dipeptidyl-peptidase-like protein-6 (DPPX) encephalitis is a rare autoimmune encephalitis, and clinical and experimental information regarding this disease is limited. We conducted this study to comprehensively describe the clinical characteristics, ancillary test results, neuroimaging results, and treatment response in a group of Chinese patients with anti-DPPX encephalitis for better understanding this disease. METHODS: We recruited 14 patients who tested positive for anti-DPPX antibodies in the serum and/or cerebrospinal fluid from 11 medical centers between March 2021 and June 2023. This retrospective study evaluated data on symptoms, autoantibody test, auxiliary examinations, treatments, and outcomes. RESULTS: The average age at diagnosis was 45.93 +/- 4.62 years (range: 11-72 years), and 9 of the 14 patients were males. The main symptoms included cognitive impairment (50.0%, 7/14), central nervous system hyperexcitability (42.9%, 6/14), gastrointestinal dysfunction (35.7%, 5/14), and psychiatric disorders (35.7%, 5/14). Notably, we discovered specific findings on (18)F-fluorodeoxyglucose positron-emission tomography (PET)/magnetic resonance imaging in two patients. Co-existing autoantibodies were identified in two patients. Parainfection was identified in four patients. One patient had other autoimmune diseases, and one had tumor. Eleven patients received immunotherapy and most patients improved at discharge. Surprisingly, three male patients but no female patients relapsed during the 6 months of follow-up. CONCLUSION: The development and outcome of anti-DPPX encephalitis are variable. Male patients were predominant in our cohort. The most common symptoms were the classical triad of prodromal gastrointestinal dysfunction, cognitive and mental disorders, and central nervous system hyperexcitability. Infections, immune dysregulation, and tumors may be important etiologies. Long-term monitoring of disease development should be done in male patients. Overall, our results highlight novel clinical characteristics of anti-DPPX encephalitis.
ESTHER : Gao_2024_Front.Neurosci_18_1379933
PubMedSearch : Gao_2024_Front.Neurosci_18_1379933
PubMedID: 38756408
Gene_locus related to this paper: human-DPP6

Title : Design, synthesis, and evaluation of a carboxylesterase detection probe with therapeutic effects - Lin_2024_Talanta_274_126060
Author(s) : Lin X , Liu M , Yi Q , Zhou Y , Su J , Qing B , Lu Y , Pu C , Lan W , Zou L , Wang J
Ref : Talanta , 274 :126060 , 2024
Abstract : In this study, a lysosomal targeting fluorescent probe recognition on CEs was designed and synthesized. The obtained probe BF(2)-cur-Mor demonstrated excellent selectivity, sensitivity, pH-independence, and enzyme affinity towards CEs within 5 min. BF(2)-cur-Mor could enable recognition of intracellular CEs and elucidate that the CEs content of different cancer cells follows the rule of HepG2 > HCT-116 > A549 > HeLa, and the CEs expression level of hepatoma cancer cells far exceeds that of normal hepatic cells, being in good agreement with the previous reports. The ability of BF(2)-cur-Mor to monitor CEs in vivo was confirmed by zebrafish experiment. BF(2)-cur-Mor exhibits some pharmacological activity in that it can induce apoptosis in hepatocellular carcinoma cells but is weaker in normal hepatocyte cells, being expected to be a potential "diagnostic and therapeutic integration" tool for the clinical diagnosis of CEs-related diseases.
ESTHER : Lin_2024_Talanta_274_126060
PubMedSearch : Lin_2024_Talanta_274_126060
PubMedID: 38604044

Title : A Long-Acting Lyotropic Liquid Crystalline Implant Promotes the Drainage of Macromolecules by Brain-Related Lymphatic System in Treating Aged Alzheimer's Disease - Shan_2024_ACS.Nano__
Author(s) : Shan X , Lu Y , Luo Z , Zhao X , Pang M , Yin H , Guo X , Zhou H , Zhang J , Huang J , Shi Y , Lou J , Luo L , You J
Ref : ACS Nano , : , 2024
Abstract : Numerous evidence has demonstrated that the brain is not an immune-privileged organ but possesses a whole set of lymphatic transport system, which facilitates the drainage of harmful waste from brains to maintain cerebral homeostasis. However, as individuals age, the shrinkage and dysfunction of meningeal and deep cervical lymphatic networks lead to reduced waste outflow and elevated neurotoxic molecules deposition, further inducing aging-associated cognitive decline, which act as one of the pathological mechanisms of Alzheimer's disease. Consequently, recovering the function of meningeal and deep cervical lymph node (dCLNs) networks (as an important part of the brain waste removal system (BWRS)) of aged brains might be a feasible strategy. Herein we showed that the drug brain-entering efficiency was highly related to administration routes (oral, subcutaneous, or dCLN delivery). Besides, by injecting a long-acting lyotropic liquid crystalline implant encapsulating cilostazol (an FDA-approved selective PDE-3 inhibitor) and donepezil hydrochloride (a commonly used symptomatic relief agent to inhibit acetylcholinesterase for Alzheimer's disease) near the deep cervical lymph nodes of aged mice (about 20 months), an increase of lymphatic vessel coverage in the nodes and meninges was observed, along with accelerated drainage of macromolecules from brains. Compared with daily oral delivery of cilostazol and donepezil hydrochloride, a single administered dual drugs-loaded long-acting implants releasing for more than one month not only elevated drug concentrations in brains, improved the clearing efficiency of brain macromolecules, reduced Abeta accumulation, enhanced cognitive functions of the aged mice, but improved patient compliance as well, which provided a clinically accessible therapeutic strategy toward aged Alzheimer's diseases.
ESTHER : Shan_2024_ACS.Nano__
PubMedSearch : Shan_2024_ACS.Nano__
PubMedID: 38517764

Title : ATGL mediated adipocyte lipolysis exacerbates acute pancreatitis severity in mouse models and patients - Xie_2024_Am.J.Pathol__
Author(s) : Xie X , Liu Y , Yang Q , Ma X , Lu Y , Hu Y , Zhang G , Ke L , Tong Z , Xue J , Lu G , Li W
Ref : American Journal of Pathology , : , 2024
Abstract : Dyslipolysis of adipocytes has played a critical role in various diseases. Adipose triglyceride lipase (ATGL) is a rate-limiting enzyme in adipocyte autonomous lipolysis. However, whether the degree of adipocyte lipolysis relates to the prognoses in acute pancreatitis (AP) and the role of ATGL mediated lipolysis in the pathogenesis of AP remains elusive. The visceral adipose tissue (VAT) consumption rate (VATR) in the acute stage was measured in both AP patients and mouse models. Lipolysis levels and ATGL expression were detected in caerulein (CER)-induced AP models. CL316,243, a lipolysis stimulator, and adipose tissue-specific ATGL knockout (AAKO) mice were used to further investigate the role of lipolysis in AP. The ATGL-specific inhibitor, Atglistatin, was performed in C57Bl/6N and ob/ob AP models. This study found that increased VATR in the acute phase was independently associated with adverse prognoses in AP patients, which was validated in mice AP models. Lipolysis of adipocytes was elevated in AP mice. Stimulation of lipolysis could aggravate AP. Genetic blockage of ATGL specifically in adipocytes was able to alleviate the damage to AP. The application of Atglistatin could effectively protect against AP in both lean and obese mice. These findings demonstrated that ATGL-mediated adipocyte lipolysis exacerbates AP and highlighted the therapeutic potential of ATGL as a drug target for AP.
ESTHER : Xie_2024_Am.J.Pathol__
PubMedSearch : Xie_2024_Am.J.Pathol__
PubMedID: 38705384

Title : Self-ratiometric fluorescent platform based on upconversion nanoparticles for on-site detection of chlorpyrifos - Zhao_2023_Food.Chem_439_138100
Author(s) : Zhao X , Lu Y , Li B , Kong M , Sun Y , Li H , Liu X , Lu G
Ref : Food Chem , 439 :138100 , 2023
Abstract : Chromobacterium sp. USM2, a locally isolated bacterium was found to synthesize poly(3-hydroxybutyrate-co-3-hydroxyvalerate), P(3HB-co-3HV) copolymer with high 3HV monomer composition. The PHA synthase gene was cloned and expressed in Cupriavidus necator PHB4 to investigate the possibilities of incorporating other monomer. The recombinant successfully incorporated 3-hydroxyhexanoate (3HHx) monomer when fed with crude palm kernel oil (CPKO) as the sole carbon source. Approximately 63 2 wt% of P(3HB-co-3HHx) copolymer with 4 mol% of 3HHx was synthesized from 5 g/L of oil after 48 h of cultivation. In addition, P(3HB-co-3HV-co-3HHx) terpolymer with 9 mol% 3HV and 4 mol% 3HHx could be synthesized with a mixture of CPKO and sodium valerate. The presence of 3HV and 3HHx monomers in the copolymer and terpolymer was further confirmed with +H-NMR analysis. This locally isolated PHA synthase has demonstrated its ability to synthesize P(3HB-co-3HHx) copolymer from a readily available and renewable carbon source; CPKO, without the addition of 3HHx precursors.
ESTHER : Zhao_2023_Food.Chem_439_138100
PubMedSearch : Zhao_2023_Food.Chem_439_138100
PubMedID: 38041885

Title : Citrobacter sp. Y3 harbouring novel gene HBCD-hd-1 mineralizes hexabromocyclododecane via new metabolic pathways according to multi-omics characterization - Peng_2023_J.Hazard.Mater_442_130071
Author(s) : Peng X , Li T , Zheng Q , Lu Y , He Y , Tang Y , Qiu R
Ref : J Hazard Mater , 442 :130071 , 2023
Abstract : Hexabromocyclododecane (HBCD) is a typical persistent organic pollutant that is widely detected in the environment. Despite the significant efforts put into its mineralisation, there is still a lack of microorganism resources that can completely mineralise HBCD. Stable isotope analysis revealed that the Citrobacter sp. Y3 can use [(13)C]HBCD as its sole carbon source and degrade or even mineralise it into (13)CO(2), with a maximum conversion rate of 100% in approximately 14 days. Strain Y3 could completely mineralise HBCD, which it used as its only carbon source, and six debromination enzymes related to HBCD degradation were found in Y3, including haloalkane dehalogenase (DhaA), haloacid dehalogenase (HAD), etc. A functional gene named HBCD-hd-1, encoding a HAD, was found to be upregulated during HBCD degradation and heterologously expressed in Escherichia coli. Recombinant E. coli with the HBCD-hd-1 gene transformed the typical intermediate 4-bromobutyric acid to 4-hydroxybutanoic acid and showed excellent degradation performance on HBCD, accompanied by nearly 100% bromine (Br) ion generation. The expression of HBCD-hd-1 in Y3 rapidly accelerated the biodegradation of HBCD. With HBCD as its sole carbon source, strain Y3 could potentially degrade HBCD, especially in a low-nutrient environment.
ESTHER : Peng_2023_J.Hazard.Mater_442_130071
PubMedSearch : Peng_2023_J.Hazard.Mater_442_130071
PubMedID: 36183513

Title : Sublethal effects of chlorantraniliprole on growth, biochemical and molecular parameters in two chironomids, Chironomus kiiensis and Chironomus javanus - Lu_2023_Ecotoxicol.Environ.Saf_253_114658
Author(s) : Lu Y , Zheng X , He X , Guo J , Fu Q , Xu H , Lu Z
Ref : Ecotoxicology & Environmental Safety , 253 :114658 , 2023
Abstract : Pesticide residues have serious environmental impacts on rice-based ecosystems. In rice fields, Chironomus kiiensis and Chironomus javanus provide alternative food sources to predatory natural enemies of rice insect pests, especially when pests are low. Chlorantraniliprole is a substitute for older classes of insecticides and has been used extensively to control rice pests. To determine the ecological risks of chlorantraniliprole in rice fields, we evaluated its toxic effects on certain growth, biochemical and molecular parameters in these two chironomids. The toxicity tests were performed by exposing third-instar larvae to a range of concentrations of chlorantraniliprole. LC(50) values at 24 h, 48 h, and 10 days showed that chlorantraniliprole was more toxic to C. javanus than to C. kiiensis. Chlorantraniliprole significantly prolonged the larval growth duration, inhibited pupation and emergence, and decreased egg numbers of C. kiiensis and C. javanus at sublethal dosages (LC(10) = 1.50 mg/L and LC(25) = 3.00 mg/L for C. kiiensis; LC(10) = 0.25 mg/L and LC(25) = 0.50 mg/L for C. javanus). Sublethal exposure to chlorantraniliprole significantly decreased the activity of the detoxification enzymes carboxylesterase (CarE) and glutathione S-transferases (GSTs) in both C. kiiensis and C. javanus. Sublethal exposure to chlorantraniliprole also markedly inhibited the activity of the antioxidant enzyme peroxidase (POD) in C. kiiensis and POD and catalase (CAT) in C. javanus. Expression levels of 12 genes revealed that detoxification and antioxidant abilities were affected by sublethal exposures to chlorantraniliprole. There were significant changes in the expression levels of seven genes (CarE6, CYP9AU1, CYP6FV2, GSTo1, GSTs1, GSTd2, and POD) in C. kiiensis and ten genes (CarE6, CYP9AU1, CYP6FV2, GSTo1, GSTs1, GSTd2, GSTu1, GSTu2, CAT, and POD) in C. javanus. These results provide a comprehensive overview of the differences in chlorantraniliprole toxicity to chironomids, indicating that C. javanus is more susceptible and suitable as an indicator for ecological risk assessment in rice ecosystems.
ESTHER : Lu_2023_Ecotoxicol.Environ.Saf_253_114658
PubMedSearch : Lu_2023_Ecotoxicol.Environ.Saf_253_114658
PubMedID: 36796207

Title : Triacylglycerol lipase, OsSG34, plays an important role in grain shape and appearance quality in rice - Jin_2023_Plant.J__
Author(s) : Jin X , Chen J , Khan A , Chen Z , Gao R , Lu Y , Zheng X
Ref : Plant J , : , 2023
Abstract : Optimal grain-appearance quality is largely determined by grain size. To date, dozens of grain size-related genes have been identified. However, the regulatory mechanism of slender grain formation is not fully clear. We identified the OsSG34 gene by map-based cloning. A 9-bp deletion on 5'-untranslated region of OsSG34, which resulted in the expression difference between the wild-type and sg34 mutant, led to the slender grains and good transparency in sg34 mutant. OsSG34 as an alpha/beta fold triacylglycerol lipase affected the triglyceride content directly, and the components of cell wall indirectly, especially the lignin between the inner and outer lemmas in rice grains, which could affect the change in grain size by altering cell proliferation and expansion, while the change in starch content and starch granule arrangement in endosperm could affect the grain-appearance quality. Moreover, the OsERF71 was identified to directly bind to cis-element on the mutant site, thereby regulating the OsSG34 expression. Knockout of three OsSG34 homologous genes resulted in slender grains as well. The study demonstrated OsSG34, involved in lipid metabolism, affected grain size and quality. Our findings suggest that the OsSG34 gene could be used in rice breeding for high yield and good grain-appearance quality via marker-assisted selection and gene-editing approaches.
ESTHER : Jin_2023_Plant.J__
PubMedSearch : Jin_2023_Plant.J__
PubMedID: 37938788
Gene_locus related to this paper: orysa-Q8H025 , orysa-Q8H024 , orysa-Q8RUY8 , orysa-Q7XI46 , orysa-q75lp9

Title : Altered endocannabinoid metabolism compromises the brain-CSF barrier and exacerbates chronic deficits after traumatic brain injury in mice - Ahluwalia_2023_Exp.Neurol__114320
Author(s) : Ahluwalia M , McMichael H , Kumar M , Espinosa MP , Bosomtwi A , Lu Y , Khodadadi H , Jarrahi A , Khan MB , Hess DC , Rahimi SY , Vender JR , Vale FL , Braun M , Baban B , Dhandapani KM , Vaibhav K
Ref : Experimental Neurology , :114320 , 2023
Abstract : Endocannabinoids [2-arachidonoylglycerol (2-AG) and N-arachidonoylethanolamine (AEA)], endogenously produced arachidonate-based lipids, are anti-inflammatory physiological ligands for two known cannabinoid receptors, CB1 and CB2, yet the molecular and cellular mechanisms underlying their effects after brain injury are poorly defined. In the present study, we hypothesize that traumatic brain injury (TBI)-induced loss of endocannabinoids exaggerates neurovascular injury, compromises brain-cerebrospinal fluid (CSF) barriers (BCB) and causes behavioral dysfunction. Preliminary analysis in human CSF and plasma indicates changes in endocannabinoid levels. This encouraged us to investigate the levels of endocannabinoid-metabolizing enzymes in a mouse model of controlled cortical impact (CCI). Reductions in endocannabinoid (2-AG and AEA) levels in plasma were supported by higher expression of their respective metabolizing enzymes, monoacylglycerol lipase (MAGL), fatty acid amide hydrolase (FAAH), and cyclooxygenase 2 (Cox-2) in the post-TBI mouse brain. Following increased metabolism of endocannabinoids post-TBI, we observed increased expression of CB2R, non-cannabinoid receptor Transient receptor potential vanilloid-1 (TRPV1), aquaporin 4 (AQP4), ionized calcium binding adaptor molecule 1 (IBA1), glial fibrillary acidic protein (GFAP), and acute reduction in cerebral blood flow (CBF). The BCB and pericontusional cortex showed altered endocannabinoid expressions and reduction in ventricular volume. Finally, loss of motor functions and induced anxiety behaviors were observed in these TBI mice. Taken together, our findings suggest endocannabinoids and their metabolizing enzymes play an important role in the brain and BCB integrity and highlight the need for more extensive studies on these mechanisms.
ESTHER : Ahluwalia_2023_Exp.Neurol__114320
PubMedSearch : Ahluwalia_2023_Exp.Neurol__114320
PubMedID: 36627040

Title : Proof-of-concept optimization of a copper-mediated (18)F-radiosynthesis of a novel MAGL PET tracer on a high-throughput microdroplet platform and its macroscale translation - Lu_2023_Lab.Chip__
Author(s) : Lu Y , He Y , Schibli R , Mu L , van Dam RM
Ref : Lab Chip , : , 2023
Abstract : Copper-mediated radiofluorination has demonstrated remarkable potential in forming aromatic C-(18)F bonds of radioligands for positron emission tomography (PET). Achieving optimal results often requires optimization efforts, requiring a substantial amount of radiolabeling precursor and time, severely limiting the experimental throughput. Recently, we successfully showcased the feasibility of performing and optimizing Cu-mediated radiosynthesis on a high-throughput microdroplet platform using the well-known and clinically used radioligand [(18)F]FDOPA as an illustrative example. In our current work, we optimized the Cu-mediated synthesis of a novel monoacylglycerol lipase (MAGL) PET tracer ([(18)F]YH149), showing the versatility of droplet-based techniques for early stage tracer development. Across 5 days, we conducted a total of 117 experiments, studying 36 distinct conditions, while utilizing <15 mg of total organoboron precursor. Compared to the original report in which the radiochemical yield (RCY) was 4.4 +/- 0.5% (n = 5), the optimized droplet condition provided a substantial improvement in RCY (52 +/- 8%, n = 4) and showed excellent radiochemical purity (100%) and molar activity (77-854 GBq micromol(-1)), using a starting activity of 0.2-1.45 GBq. Furthermore, we showed for the first time a translation of the optimized microscale conditions to a vial-based method. With similar starting activity (0.2-1.44 GBq), the translated synthesis exhibited a comparable RCY of 50 +/- 10% (n = 4) while maintaining excellent radiochemical purity (100%) and acceptable molar activity (20-46 GBq micromol(-1)). The successful translation to vial-based reactions ensures wider applicability of the optimized synthesis by leveraging widely available commercial vial-based synthesis modules.
ESTHER : Lu_2023_Lab.Chip__
PubMedSearch : Lu_2023_Lab.Chip__
PubMedID: 37818614

Title : Exploration of DPP-IV Inhibitory Peptide Design Rules Assisted by the Deep Learning Pipeline That Identifies the Restriction Enzyme Cutting Site - Guan_2023_ACS.Omega_8_39662
Author(s) : Guan C , Luo J , Li S , Tan ZL , Wang Y , Chen H , Yamamoto N , Zhang C , Lu Y , Chen J , Xing XH
Ref : ACS Omega , 8 :39662 , 2023
Abstract : The mining of antidiabetic dipeptidyl peptidase IV (DPP-IV) inhibitory peptides (DPP-IV-IPs) is currently a costly and laborious process. Due to the absence of rational peptide design rules, it relies on cumbersome screening of unknown enzyme hydrolysates. Here, we present an enhanced deep learning model called bidirectional encoder representation (BERT)-DPPIV, specifically designed to classify DPP-IV-IPs and explore their design rules to discover potent candidates. The end-to-end model utilizes a fine-tuned BERT architecture to extract structural/functional information from input peptides and accurately identify DPP-IV-Ips from input peptides. Experimental results in the benchmark data set showed BERT-DPPIV yielded state-of-the-art accuracy and MCC of 0.894 and 0.790, surpassing the 0.797 and 0.594 obtained by the sequence-feature model. Furthermore, we leveraged the attention mechanism to uncover that our model could recognize the restriction enzyme cutting site and specific residues that contribute to the inhibition of DPP-IV. Moreover, guided by BERT-DPPIV, proposed design rules for DPP-IV inhibitory tripeptides and pentapeptides were validated, and they can be used to screen potent DPP-IV-IPs.
ESTHER : Guan_2023_ACS.Omega_8_39662
PubMedSearch : Guan_2023_ACS.Omega_8_39662
PubMedID: 37901493

Title : The mechanisms to dispose of misfolded proteins in the endoplasmic reticulum of adipocytes - Wu_2023_Nat.Commun_14_3132
Author(s) : Wu SA , Shen C , Wei X , Zhang X , Wang S , Chen X , Torres M , Lu Y , Lin LL , Wang HH , Hunter AH , Fang D , Sun S , Ivanova MI , Lin Y , Qi L
Ref : Nat Commun , 14 :3132 , 2023
Abstract : Endoplasmic reticulum (ER)-associated degradation (ERAD) and ER-phagy are two principal degradative mechanisms for ER proteins and aggregates, respectively; however, the crosstalk between these two pathways under physiological settings remains unexplored. Using adipocytes as a model system, here we report that SEL1L-HRD1 protein complex of ERAD degrades misfolded ER proteins and limits ER-phagy and that, only when SEL1L-HRD1 ERAD is impaired, the ER becomes fragmented and cleared by ER-phagy. When both are compromised, ER fragments containing misfolded proteins spatially coalesce into a distinct architecture termed Coalescence of ER Fragments (CERFs), consisted of lipoprotein lipase (LPL, a key lipolytic enzyme and an endogenous SEL1L-HRD1 substrate) and certain ER chaperones. CERFs enlarge and become increasingly insoluble with age. Finally, we reconstitute the CERFs through LPL and BiP phase separation in vitro, a process influenced by both redox environment and C-terminal tryptophan loop of LPL. Hence, our findings demonstrate a sequence of events centered around SEL1L-HRD1 ERAD to dispose of misfolded proteins in the ER of adipocytes, highlighting the profound cellular adaptability to misfolded proteins in the ER in vivo.
ESTHER : Wu_2023_Nat.Commun_14_3132
PubMedSearch : Wu_2023_Nat.Commun_14_3132
PubMedID: 37253728

Title : Chromone-based monoamine oxidase B inhibitor with potential iron-chelating activity for the treatment of Alzheimer's disease - Zhang_2023_J.Enzyme.Inhib.Med.Chem_38_100
Author(s) : Zhang C , Zhang Y , Lv Y , Guo J , Gao B , Lu Y , Zang A , Zhu X , Zhou T , Xie Y
Ref : J Enzyme Inhib Med Chem , 38 :100 , 2023
Abstract : Based on the multitarget-directed ligands (MTDLs) strategy, a series of chromone-hydroxypyridinone hybrids were designed, synthesised, and evaluated as potential multimodal anti-AD ligands. Prospective iron-chelating effects and favourable monoamine oxidase B (MAO-B) inhibitory activities were observed for most of the compounds. Pharmacological assays led to the identification of compound 17d, which exhibited favourable iron-chelating potential (pFe(3+) = 18.52) and selective hMAO-B inhibitory activity (IC(50) = 67.02 +/- 4.3 nM, SI = 11). Docking simulation showed that 17d occupied both the substrate and the entrance cavity of MAO-B, and established several key interactions with the pocket residues. Moreover, 17d was determined to cross the blood-brain barrier (BBB), and can significantly ameliorate scopolamine-induced cognitive impairment in AD mice. Despite its undesired pharmacokinetic property, 17d remains a promising multifaceted agent that is worth further investigation.
ESTHER : Zhang_2023_J.Enzyme.Inhib.Med.Chem_38_100
PubMedSearch : Zhang_2023_J.Enzyme.Inhib.Med.Chem_38_100
PubMedID: 36519319

Title : Transesterification of phosphatidylcholine with DHA-rich algal oil using immobilized Candida antarctica lipase B to produce DHA-phosphatidylcholine - Shu_2023_Enzyme.Microb.Technol_169_110266
Author(s) : Shu L , Zheng X , Qi S , Lin S , Lu Y , Yao C , Ling X
Ref : Enzyme Microb Technol , 169 :110266 , 2023
Abstract : Docosahexaenoic acid (DHA) enriched with phospholipids (PLs) (DHA-PLs) is a type of structured PL with good physicochemical and nutritional properties. Compared to PLs and DHA, DHA-PLs has higher bioavailability and structural stability and many nutritional benefits. To improve the enzymatic synthesis of DHA-PLs, this study investigated the preparation of phosphatidylcholine (PC) enriched with DHA (DHA-PC) via enzymatic transesterification of algal oil, which is rich in DHA-triglycerides, using immobilized Candida antarctica lipase B (CALB). The optimized reaction system incorporated 31.2% DHA into the acyl chain of PC and converted 43.6% PC to DHA-PC within 72 h at 50 degreesC, 1:8 PC: algal oil mass ratio, 25% enzyme load (based on total substrate mass), and 0.02 g/mL molecular sieve concentration. Consequently, the side reactions of PC hydrolysis were effectively suppressed and products with high PC content (74.8%) were produced. Molecular structure analysis showed that exogenous DHA was specifically incorporated into the sn-1 site of the PC by immobilized CALB. Furthermore, the evaluation of reusability with eight cycles showed that the immobilized CALB had good operational stability in the present reaction system. Collectively, this study demonstrated the applicability of immobilized CALB as a biocatalyst for synthesizing DHA-PC and provided an improved enzyme-catalyzed method for future DHA-PL synthesis.
ESTHER : Shu_2023_Enzyme.Microb.Technol_169_110266
PubMedSearch : Shu_2023_Enzyme.Microb.Technol_169_110266
PubMedID: 37311283

Title : A potential novel biomarker: comprehensive analysis of prognostic value and immune implication of CES3 in colonic adenocarcinoma - He_2023_J.Cancer.Res.Clin.Oncol__
Author(s) : He L , Zhao C , Xu J , Li W , Lu Y , Gong Y , Gu D , Wang X , Guo F
Ref : J Cancer Research Clin Oncol , : , 2023
Abstract : PURPOSE: Colon cancer is the most common malignant tumor in the intestine. Abnormal Carboxylesterases 3 (CES3) expression had been reported to be correlated to multiple tumor progression. However, the association among CES3 expression and prognostic value and immune effects in colonic adenocarcinoma (COAD) were unclear. PATIENTS AND METHODS: The transcription and expression data of CES3 and corresponding clinical information was downloaded from The Cancer Genome Atlas (TCGA). The CES3 protein expression and the prognostic value were verified based on tissue microarray data. The Cancer immune group Atlas (TCIA), Tumor Immune Dysfunction and Exclusion (TIDE) algorithm and the GSE78220 immunotherapy cohort were used to forecast immunotherapy efficacy. Finally, a prognostic immune signature was constructed and verified. RESULTS: Compared with normal colon tissues, the expression of mRNA and protein levels of CES3 were downregulated in tumor tissues. CES3 expression was associated with TIICs. Hihg-CES3 COAD patients had better efficacy of concurrent immunotherapy. CES3-related immune genes (CRIs) were identified and were then used to construct prognostic immune signature and had been successfully verified in GES39582. CONCLUSION: CES3 might be a potential immune-related gene and promising prognostic biomarker in COAD.
ESTHER : He_2023_J.Cancer.Res.Clin.Oncol__
PubMedSearch : He_2023_J.Cancer.Res.Clin.Oncol__
PubMedID: 37480527
Gene_locus related to this paper: human-CES3

Title : Application of Marine Natural Products against Alzheimer's Disease: Past, Present and Future - Hu_2023_Mar.Drugs_21_
Author(s) : Hu D , Jin Y , Hou X , Zhu Y , Chen D , Tai J , Chen Q , Shi C , Ye J , Wu M , Zhang H , Lu Y
Ref : Mar Drugs , 21 : , 2023
Abstract : Alzheimer's disease (AD), a neurodegenerative disease, is one of the most intractable illnesses which affects the elderly. Clinically manifested as various impairments in memory, language, cognition, visuospatial skills, executive function, etc., the symptoms gradually aggravated over time. The drugs currently used clinically can slow down the deterioration of AD and relieve symptoms but cannot completely cure them. The drugs are mainly acetylcholinesterase inhibitors (AChEI) and non-competitive N-methyl-D-aspartate receptor (NDMAR) antagonists. The pathogenesis of AD is inconclusive, but it is often associated with the expression of beta-amyloid. Abnormal deposition of amyloid and hyperphosphorylation of tau protein in the brain have been key targets for past, current, and future drug development for the disease. At present, researchers are paying more and more attention to excavate natural compounds which can be effective against Alzheimer's disease and other neurodegenerative pathologies. Marine natural products have been demonstrated to be the most prospective candidates of these compounds, and some have presented significant neuroprotection functions. Consequently, we intend to describe the potential effect of bioactive compounds derived from marine organisms, including polysaccharides, carotenoids, polyphenols, sterols and alkaloids as drug candidates, to further discover novel and efficacious drug compounds which are effective against AD.
ESTHER : Hu_2023_Mar.Drugs_21_
PubMedSearch : Hu_2023_Mar.Drugs_21_
PubMedID: 36662216

Title : Peroxidase-like activity of Ru-N-C nanozymes in colorimetric assay of acetylcholinesterase activity - Yan_2022_Anal.Chim.Acta_1191_339362
Author(s) : Yan B , Wang F , He S , Liu W , Zhang C , Chen C , Lu Y
Ref : Anal Chim Acta , 1191 :339362 , 2022
Abstract : Herein, the Ru-N-C nanozymes with abundant active Ru-N(x) sites have been successfully prepared by pyrolyzing Ru(acac)(3) trapped zeolitic-imidazolate-frameworks (Ru(acac)(3)@ZIF-8). Taking advantages of the remarkable peroxidase-mimicking activity, outstanding stability and reusability of Ru-N-C nanozymes, a novel biosensing system with explicit mechanism is strategically fabricated for sensitively determining acetylcholinesterase (AChE) and tacrine. The limit of detection for AChE activity can achieve as low as 0.0433 mU mL(-1), and the IC(50) value of tacrine for AChE is about 0.190 micromol L(-1). The robust analytical performance in serums test verifies the great application potential of this assay in real matrix. Furthermore, "INH" and "IMPLICATION-AND" logic gates are rationally constructed based on the proposed colorimetric sensor. This work not only provides one sustainable and effective avenue to fabricate Ru-N-C-based peroxidase mimic with high catalytic performance, and also gives new impetuses for developing novel biosensors by applying Ru-N-C-based enzyme mimics as substitutes for the natural enzyme.
ESTHER : Yan_2022_Anal.Chim.Acta_1191_339362
PubMedSearch : Yan_2022_Anal.Chim.Acta_1191_339362
PubMedID: 35033267

Title : SARM1 deletion in parvalbumin neurons is associated with autism-like behaviors in mice - Xiang_2022_Cell.Death.Dis_13_638
Author(s) : Xiang L , Wu Q , Sun H , Miao X , Lv Z , Liu H , Chen L , Gu Y , Chen J , Zhou S , Jiang H , Du S , Zhou Y , Dong H , Fan Y , Miao S , Lu Q , Chang L , Wang H , Lu Y , Xu X , Wang W , Huang Z
Ref : Cell Death Dis , 13 :638 , 2022
Abstract : Autism spectrum disorder (ASD), a group of neurodevelopmental disorder diseases, is characterized by social deficits, communication difficulties, and repetitive behaviors. Sterile alpha and TIR motif-containing 1 protein (SARM1) is known as an autism-associated protein and is enriched in brain tissue. Moreover, SARM1 knockdown mice exhibit autism-like behaviors. However, its specific mechanism in ASD pathogenesis remains unclear. Here we generated parvalbumin-positive interneurons (PVI)-specific conditional SARM1 knockout (SARM1(PV)-CKO) mice. SARM1(PV)-CKO male mice showed autism-like behaviors, such as mild social interaction deficits and repetitive behaviors. Moreover, we found that the expression level of parvalbumin was reduced in SARM1(PV)-CKO male mice, together with upregulated apoptosis-related proteins and more cleaved-caspase-3-positive PVIs, suggesting that knocking out SARM1 may cause a reduction in the number of PVIs due to apoptosis. Furthermore, the expression of c-fos was shown to increase in SARM1(PV)-CKO male mice, in combination with upregulation of excitatory postsynaptic proteins such as PSD-95 or neuroligin-1, indicating enhanced excitatory synaptic input in mutant mice. This notion was further supported by the partial rescue of autism-like behavior deficits by the administration of GABA receptor agonists in SARM1(PV)-CKO male mice. In conclusion, our findings suggest that SARM1 deficiency in PVIs may be involved in the pathogenesis of ASD.
ESTHER : Xiang_2022_Cell.Death.Dis_13_638
PubMedSearch : Xiang_2022_Cell.Death.Dis_13_638
PubMedID: 35869039

Title : Immobilization for Lipase: Enhanced Activity and Stability by Flexible Combination and Solid Support - Hu_2022_Appl.Biochem.Biotechnol__
Author(s) : Hu R , Niu Z , Lu Y , Zhu H , Mao Z , Yan K , Hu X , Chen H
Ref : Appl Biochem Biotechnol , : , 2022
Abstract : In this study, an enhanced activity and stability method for immobilizing porcine pancreatic lipase (PPL) was developed based on ZIF-8 encapsulated supramolecular-modified gold nanoparticle complexes (pSC(4)-AuNPs@ZIF-8). Supramolecular calix[4]arene (pSC(4)) can recognize the amino group of PPL through non-covalent force, and this flexible binding method protected the structure of PPL during the immobilization process. Due to the hydrophilic of pSC(4)-AuNPs and hydrophobic of ZIF-8, PPL can maintain a "lid open" conformation, which can enhance the stability of PPL structure and reduce PPL activity loss. ZIF-8 was used to immobilize PPL to avoid the difficult recovery of free PPL. Compared with the native form of PPL, it exhibited 70.6% maintained activity with terrific pH and temperature stability, and had good performance in thermal stability, time stability, and reusability. In addition, three immobilized PPL methods were designed to further clarify the influence of synthetic methods and additives on the activity and stability of PPL. Importantly, the loading rate of pSC(4)-AuNPs@ZIF-8@PPL was up to 51.2% among these immobilized PPL systems. Therefore, pSC(4)-AuNPs@ZIF-8 may serve as a versatile and promising immobilization system for enzymes.
ESTHER : Hu_2022_Appl.Biochem.Biotechnol__
PubMedSearch : Hu_2022_Appl.Biochem.Biotechnol__
PubMedID: 35852759

Title : Study on pathological and clinical characteristics of chronic HBV infected patients with HBsAg positive, HBV DNA negative, HBeAg negative - Zeng_2022_Front.Immunol_13_1113070
Author(s) : Zeng Z , Liu R , Cao W , Yang L , Lin Y , Bi X , Jiang T , Deng W , Wang S , Lu H , Sun F , Shen G , Chang M , Lu Y , Wu S , Hao H , Xu M , Chen X , Hu L , Zhang L , Wan G , Xie Y , Li M
Ref : Front Immunol , 13 :1113070 , 2022
Abstract : AIMS: Study of clinical characteristics of hepatitis B virus deoxyribonucleic acid (HBV DNA)-negative, hepatitis B surface antigen (HBsAg)-positive, hepatitis B e antigen (HBeAg)-negative patients based on liver histopathology. METHODS: We retrospectively enrolled patients with chronic HBV infection diagnosis at Beijing Ditan Hospital from May 2008 to November 2020. To study the differences between patients with significant hepatic histopathology and those without significant hepatic histopathology. And to study the independent factors of significant hepatic histopathology. RESULTS: 85 HBV DNA-negative and HBeAg-negative patients were 37.90 +/- 10.30 years old, 23.50% of patients with grade of inflammation (G) >1, 35.30% of patients with liver fibrosis stage (S) >1, 44.70% patients were diagnosed with significant hepatic histopathology. Compared to the no significant hepatic histopathology group, another group had older age (41.70 +/- 10.70 vs 34.80 +/- 8.87 years, t=-3.28, P=0.002), higher total bilirubin (TBIL) [14.9(10.3, 22.4) vs 11(8.9, 14.4) micromol/L, z=-2.26, P=0.024], lower cholinesterase (CHE) (t=-2.86, P=0.005, 7388.00 +/- 2156.00 vs 8988.00 +/- 2823.00 U/L) and lower platelet (PLT) (t=2.75, P=0.007, 157.00 +/- 61.40 vs 194.00 +/- 61.00 10^9/L). Abnormal ALT patients are more likely to have significant hepatic histopathology (z=5.44, P=0.020, 66.70% vs 337.50%). G had significant correlation with CHE (P=0.008, r=-0.23), alanine aminotransferase (ALT) (P=0.041, r=0.18), aspartate aminotransferase (AST) (P=0.001, r=0.29). S had significant correlation with TBIL (P = 0.008, r = 0.23), age (P < 0.001, r = 0.32), international normalized ratio (INR) (P = 0.04, r = 0.23), CHE (P < 0.001, r = -0.30), PLT (P < 0.001, r = -0.40) and prothrombin time activity (PTA) (P = 0.046, r = -0.22). Multivariate logistic analysis indicated only age (95%CI=1.014~1.130, OR=1.069, P=0.013) was an impact factor for significant hepatic histopathology. The cutoff point of age was 34.30 years. CONCLUSIONS: A large proportion of chronic HBV infection patients with HBeAg-negative and HBV DNA-negative still have chronic hepatitis. Age is an independent factor for significant hepatic histopathology.
ESTHER : Zeng_2022_Front.Immunol_13_1113070
PubMedSearch : Zeng_2022_Front.Immunol_13_1113070
PubMedID: 36685494

Title : Carbamate-based N-Substituted tryptamine derivatives as novel pleiotropic molecules for Alzheimer's disease - Zhang_2022_Bioorg.Chem_125_105844
Author(s) : Zhang H , Wang Y , Liu D , Li J , Feng Y , Lu Y , Yin G , Li Z , Shi T , Wang Z
Ref : Bioorg Chem , 125 :105844 , 2022
Abstract : A novel series of carbamate-based N-substituted tryptamine derivatives were designed and synthesized based on functional group combination strategy, and possessed both cholinesterase inhibition and neuroprotective effects. After systematically evaluating the cholinesterase inhibitory activity of 24 synthesized compounds, compound 6H6, bearing n-heptyl residue as carbamate moiety, was highlighted due to its great BChE-selective inhibition (eeAChE IC(50) > 100 microM; eqBChE IC(50) = 7 nM), neuronal protection, antioxidation and anti-neuroinflammation efficacy. Cytotoxicity and acute toxicity assays confirmed the safety-efficacy profiles of compound 6H6. Besides, pharmacokinetic properties and blood-brain barrier (BBB) permeability of compound 6H6 were favorable and suitable for further study in vivo. The behavioral tests revealed that compound 6H6 could remarkably improve the scop-induced ethological changes and memory impairment, suggesting compound 6H6, as an attractive pleiotropic molecule, had great promise in treating Alzheimer's disease.
ESTHER : Zhang_2022_Bioorg.Chem_125_105844
PubMedSearch : Zhang_2022_Bioorg.Chem_125_105844
PubMedID: 35594720

Title : Predictive Value of Perioperative Cytokine Levels on the Risk for In-Stent Restenosis in Acute Myocardial Infarction Patients - Chen_2022_Contrast.Media.Mol.Imaging_2022_7832564
Author(s) : Chen D , Xie X , Lu Y , Chen S , Lin S
Ref : Contrast Media Mol Imaging , 2022 :7832564 , 2022
Abstract : To investigate the value of perioperative cytokine levels in predicting the risk for in-stent restenosis in patients with acute myocardial infarction. 452 patients with acute myocardial infarction admitted to our hospital between June 2018 and June 2020 were prospectively selected as subjects. All patients underwent percutaneous coronary intervention. The baseline data of the patients were collected. Venous blood was taken before, 24 hours, and 3 days after the operation to detect the levels of related cytokines. Follow-up was performed for 1 year. The patients were assigned to restenosis and nonrestenosis groups according to the presence and absence of restenosis. Multivariate logistic analysis was used to explore the influencing factors of the risk for in-stent restenosis in patients with acute myocardial infarction. By July 1, 2021, 449 cases had been followed up. Of them, 44 cases suffered from in-stent restenosis and 405 cases did not affect in-stent restenosis. The incidence of in-stent restenosis was 9.80%. Before, 24 hours, and 3 days after the operation, the lipoprotein-associated phospholipase A2 (Lp-PLA2) level was significantly higher in the restenosis group than that in the nonrestenosis group. At 3 days after the operation, the interleukin 6 (IL-6) level was significantly higher in the restenosis group than that in the nonrestenosis group (P < 0.05). Multivariate logistic analysis displayed that Lp-PLA2 level preoperatively (OR = 1.048, 95% CI 1.029-1.068), Lp-PLA2 level 24 hours postoperatively (OR = 1.013, 95% CI 1.007-1.019), Lp-PLA2 level 3 days postoperatively (OR = 1.032, 95% CI 1.015-1.048), and IL-6 level 3 days postoperatively (OR = 1.020, 95% CI 1.000-1.040) were risk factors for in-stent restenosis (all P < 0.05). IL-6 and Lp-PLA2 levels can predict the risk for in-stent restenosis in patients with acute myocardial infarction in the perioperative period.
ESTHER : Chen_2022_Contrast.Media.Mol.Imaging_2022_7832564
PubMedSearch : Chen_2022_Contrast.Media.Mol.Imaging_2022_7832564
PubMedID: 35542755

Title : Effect of Lactobacillus with Feruloyl Esterase-Producing Ability on Dextran Sodium Sulfate-Induced Ulcerative Colitis in Mice - Shen_2022_J.Agric.Food.Chem_70_14817
Author(s) : Shen D , Ma S , Li X , Lu Y
Ref : Journal of Agricultural and Food Chemistry , 70 :14817 , 2022
Abstract : Ulcerative colitis (UC) is becoming an increasingly serious health problem. This study aimed to investigate the effect of a newly isolated Lactobacillus species that produces feruloyl esterase (FAEb) on dextran sodium sulfate (DSS)-induced UC in mice. In this study, FAEb supplementation slowed body weight loss and mitigated colon length shortening, the severity of fecal occult blood, and increases in the disease activity index (DAI) in UC model mice. FAEb supplementation was also shown to reduce the expression of proinflammatory factors, increase the antioxidant capacity, improve the production of beneficial short-chain fatty acids (SCFAs), upregulate the expression of tight junction proteins, reduce the histopathological scores, and reduce mucous barrier damage in the gut. Furthermore, FAEb supplementation was shown to inhibit inflammatory NF-kappaB signaling pathway activity, increase the abundance of beneficial bacteria, and regulate the balance of microbiota in the gut. These results suggest that FAEb may serve as a potential probiotic to prevent and treat UC.
ESTHER : Shen_2022_J.Agric.Food.Chem_70_14817
PubMedSearch : Shen_2022_J.Agric.Food.Chem_70_14817
PubMedID: 36394387

Title : Baseline lymphocyte and cholinesterase levels may be the predictors of chronic herbal drug-induced liver injury - Zeng_2022_Front.Pharmacol_13_962480
Author(s) : Zeng Z , Yi W , Dong JP , Chen QQ , Sun FF , Lu HH , Lin YJ , Bi XY , Yang L , Lu Y , Zhang L , Li MH , Xie Y
Ref : Front Pharmacol , 13 :962480 , 2022
Abstract : Objective: To investigate the factors influencing the chronicity of drug-induced liver injury (DILI) caused by Chinese herbal medicine. Methods: Patients with DILI diagnosed by using the RUCAM score were enrolled retrospectively. The subjects were patients with DILI induced by taking Chinese herbal medicine and were followed up for 48 weeks. These patients were divided into a cure group and a chronic group. The biochemical indicators were monitored at baseline and every 3 months. Logistic regression was used to analyze the risk factors of DILI chronicity. The ROC (receiver operator characteristic) curve was used to analyze the diagnostic efficiency of each factor. Results: A total of 420 patients with DILI were enrolled; 122 of them were caused by Chinese herbal medicine, 70.5% (86/122) of them were female, chronic group 31.2% (39/122), and cure group 68.0% (83/122); cholinesterase (ChE) in the chronic group was lower than that in the cure group (5467.10 +/- 2010.40 U/L vs. 6248.52 +/- 1901.78 U/L, p = 0.04, t = 2.078). There was no significant difference in the age between cured patients and chronic patients (p = 0.156, Z = -1.417). There was no significant difference between the prognosis of different genders (p = 0.521, Z = -0.639). The logistic regression analysis showed that baseline lymphocyte (OR = 0.429, 95%CI = 0.205-0.898, p = 0.025) and cholinesterase (OR = 0.088, 95%CI = 0.008-0.994, p = 0.049) were independent risk factors of drug-induced chronicity. Conclusion: Baseline lymphocyte and cholinesterase may be the predictive factors for the chronicity of Chinese herbal medicine-induced liver injury.
ESTHER : Zeng_2022_Front.Pharmacol_13_962480
PubMedSearch : Zeng_2022_Front.Pharmacol_13_962480
PubMedID: 35991883

Title : Toxicity, Horizontal Transfer, Physiological and Behavioral Effects of Cycloxaprid against Solenopsis invicta (Hymenoptera: Formicidae) - Zhang_2022_Pest.Manag.Sci__
Author(s) : Zhang L , Wang L , Chen J , Zhang J , He Y , Lu Y , Cai J , Chen X , Wen X , Xu Z , Wang C
Ref : Pest Manag Sci , : , 2022
Abstract : BACKGROUND: The red imported fire ant, Solenopsis invicta Buren, is a significant urban, agricultural, and medical pest with a wide distribution in the world. Surface or mound treatment using contact insecticide is one of the main methods to control S. invicta. In the present study, cycloxaprid, a newly-discovered neonicotinoid insecticide, was evaluated for S. invicta control and compared with two referent insecticides, imidacloprid and bifenthrin. RESULTS: Surfaces or sand treated with cycloxaprid, imidacloprid, or bifenthrin caused high mortality of S. invicta workers, and the action of cycloxaprid or imidacloprid was slower than bifenthrin. Like imidacloprid and bifenthrin, cycloxaprid can be horizontally transferred from corpses or live donor ants to recipient ants. In addition, cycloxaprid- or imidacloprid-treated surfaces significantly induced the activities of acetylcholinesterase (AChE) and detoxification enzymes; nevertheless, they had no significant effect on the foraging behaviors of S. invicta workers. Also, sand treated with cycloxaprid or imidacloprid did not negatively affect the digging activities of ants. Interestingly, S. invicta workers excavated significantly more sand containing 0.01 mg/kg cycloxaprid than untreated sand in the no-choice digging bioassays. In addition, extensive nesting activities (sand excavation and stacking) were observed in the flowerpots containing untreated sand or sand treated with cycloxaprid or imidacloprid. On the contrary, bifenthrin significantly reduced the foraging, digging, and nesting activities of S. invicta workers. CONCLUSION: Cycloxaprid is a slow-acting and non-repellent insecticide against S. invicta workers, and its contact and horizontal toxicities are slightly higher than imidacloprid. This article is protected by copyright. All rights reserved.
ESTHER : Zhang_2022_Pest.Manag.Sci__
PubMedSearch : Zhang_2022_Pest.Manag.Sci__
PubMedID: 35192738

Title : Predictive value of serum cholinesterase in the mortality of acute pancreatitis: A retrospective cohort study - Wei_2022_Eur.J.Clin.Invest__e13741
Author(s) : Wei M , Xie X , Yu X , Lu Y , Ke L , Ye B , Zhou J , Li G , Li B , Tong Z , Lu G , Li W , Li J
Ref : European Journal of Clinical Investigation , :e13741 , 2022
Abstract : BACKGROUND: Severe acute pancreatitis has a high mortality of 20-40%, but there is lack of optimal prognostic biomarker for the severity of acute pancreatitis (AP) or mortality. This study is designed to investigate the relationship between serum cholinesterase (ChE) level and poor outcomes of AP. METHODS: A total of 1904 AP patients were screened in the study, and we finally got 692 patients eligible for analysis. Patients were divided into 2 groups based on serum ChE. The primary outcome was mortality, and multivariable logistic regression analysis for mortality was completed. Additionally, we used receiver operator characteristic (ROC) curve analysis to clarify the predictive value of serum ChE for mortality and organ failure. RESULTS: 378 patients and 314 patients were included in ChE low and normal group, respectively. Patients in ChE low group were older (46.68+/-12.70 vs 43.56+/-12.13 years old, p=0.001) and had a lower percentage of male (62.4% vs 71.0%, p=0.017) when compared with the ChE normal group. Mortality was significantly different in two groups (10.3% vs 0.0%, p<0.001). Moreover, organ failure also differed significantly in two groups (46.6% vs 8.6%, p<0.001). Decreased ChE level was independently associated with mortality in acute pancreatitis (odds ratio: 0.440; 95% confidence interval, 0.231, 0.838, p=0.013). The area under the curve of serum ChE was 0.875 and 0.803 for mortality and organ failure, respectively. CONCLUSIONS: Lower level of serum ChE was independently associated with the severity and mortality of AP.
ESTHER : Wei_2022_Eur.J.Clin.Invest__e13741
PubMedSearch : Wei_2022_Eur.J.Clin.Invest__e13741
PubMedID: 34981831

Title : The optimized biocatalytic synthesis of (S)-methyl 2-chlorobutanoate by Acinetobacter sp. lipase - Lu_2022_Chirality__
Author(s) : Lu Y , Zhan R , Song B , Zhou Y , Zhu L , Chen H , Chen X
Ref : Chirality , : , 2022
Abstract : Epilepsy is a chronic disease caused by sudden abnormal discharge of brain neurons, leading to transient brain dysfunction. Levetiracetam, developed by the UCB company in Belgium, is an effective drug for the treatment of epilepsy. (S)-Methyl 2-chlorobutanoate is an important chiral building block of levetiracetam, which has attracted a great deal of attention. In this study, a strain of lipase-produced Acinetobacter sp. zjutfet-1 was screened from soil samples. At optimized conditions for fermentation and biocatalysis, the bacterial lipase exhibited high catalytic activity for hydrolysis and stereoselectivity toward racemic methyl 2-chlorobutanoate. When the enzymatic reaction was carried out in 6% of racemic substrate, the enantiomeric excess (e.e.(s) ) reached more than 95%, with a yield of over 86%. Therefore, this lipase can efficiently resolve racemic methyl 2-chlorobutanoate and obtain (S)-methyl 2-chlorobutanoate, which presents great potential in the industrial production of levetiracetam.
ESTHER : Lu_2022_Chirality__
PubMedSearch : Lu_2022_Chirality__
PubMedID: 35713364

Title : A near-infrared light triggered fluormetric biosensor for sensitive detection of acetylcholinesterase activity based on NaErF(4): 0.5 \% Ho(3+)@NaYF(4) upconversion nano-probe - Zhao_2021_Talanta_235_122784
Author(s) : Zhao X , Zhang L , Yan X , Lu Y , Pan J , Zhang M , Wang C , Suo H , Jia X , Liu X , Lu G
Ref : Talanta , 235 :122784 , 2021
Abstract : Acetylcholinesterase (AChE), as an important neurotransmitter, is widely present in the peripheral and central nervous systems. The aberrant expression of AChE could cause diverse neurodegenerative diseases. Herein, we developed a facile and interference-free fluorimetric biosensing platform for highly sensitive AChE activity determination based on a NaErF(4): 0.5 % Ho(3+)@NaYF(4) nano-probe. This nano-probe exhibits a unique property of emitting bright monochromic red (650 nm) upconversion (UC) emission under multiband (~808, ~980, and ~1530 nm) near-infrared (NIR) excitations. The principle of this detection relies on the quenching of the strong monochromic red UC emission by oxidization products of 3,3',5,5'-tetramethylbenzidine generated through AChE-modulated cascade reactions. This system shows a great sensing performance with a detection limit (LOD) of 0.0019 mU mL(-) (1) for AChE, as well as good specificity and stability. Furthermore, we validated the potential of the nano-probe in biological samples by determination of AChE in whole blood with a LOD of 0.0027 mU mL(-1), indicating the potential application of our proposed platform for monitoring the progression of AChE-related disease.
ESTHER : Zhao_2021_Talanta_235_122784
PubMedSearch : Zhao_2021_Talanta_235_122784
PubMedID: 34517642

Title : Atomically dispersed Fe\/Bi dual active sites single-atom nanozymes for cascade catalysis and peroxymonosulfate activation to degrade dyes - Chen_2021_J.Hazard.Mater_422_126929
Author(s) : Chen Q , Liu Y , Lu Y , Hou Y , Zhang X , Shi W , Huang Y
Ref : J Hazard Mater , 422 :126929 , 2021
Abstract : Constructing single-atom nanozymes (SAzymes) with densely exposed and dispersed double metal-N(x) catalytic sites for pollution remediation remains rare and challenging. Herein, we report a novel Fe-Bi bimetallic MOF-derived carbon supported Fe-N(4) and Bi-N(4) dual-site FeBi-NC SAzyme for cascade catalysis and peroxymonosulfate activation to degrade dye pollutants, which is synthesized from the Fe-doped Bi-MOF as a precursor. The formation of both Fe-N(4) and Bi-N(4) sites is demonstrated by XANES and EXAFS. The FeBi-NC SAzyme has high single atoms loadings of Fe (2.61 wt%) and Bi (8.01 wt%), and displays 5.9- and 9.8-fold oxidase mimicking activity enhancement relative to the Fe-NC and Bi-NC SAzymes, respectively. When integrated acetylcholinesterase (AChE) and FeBi-NC SAzyme, a cascade enzyme-nanozyme system is developed for selective and sensitive screening of AChE activity with a low detection limit of 1 x 10(-4) mU mL(-1). Both Fe-N(4) and Bi-N(4) in FeBi-NC display a strong binding energy and electron donating capability to promote peroxymonosulfate activation to generate highly active intermediates for rhodamine B degradation. 100% rhodamine B removal occurs within 5 min via FeBi-NC mediated activation of peroxymonosulfate. The DFT calculations reveal that high activity of FeBi-NC is due to the isolated Fe-N(4) and Bi-N(4) sites and their synergy.
ESTHER : Chen_2021_J.Hazard.Mater_422_126929
PubMedSearch : Chen_2021_J.Hazard.Mater_422_126929
PubMedID: 34523499

Title : Notum suppresses the osteogenic differentiation of periodontal ligament stem cells through the Wnt\/Beta catenin signaling pathway - Yang_2021_Arch.Oral.Biol_130_105211
Author(s) : Yang P , Li C , Kou Y , Jiang Y , Li D , Liu S , Lu Y , Hasegawa T , Li M
Ref : Archives of Oral Biology , 130 :105211 , 2021
Abstract : OBJECTIVES: The aims of this study were to explore: (i) the effect of Notum on periodontitis in vivo; (ii) the effect of Notum on the osteogenic differentiation of human periodontal ligament stem cells (hPDLSCs) in vitro; and (iii) the potential mechanism of Notum in inhibiting the osteogenic differentiation of hPDLSCs. DESIGN: C57BL/6J mice were randomly assigned into two groups: control group (n = 4) and periodontitis group (n = 4). Immunohistochemical staining was used to evaluate the expression of Notum. In in vitro experiments, Western blot, qRT- PCR and ELISA were used to examine the expression of Notum in a lipopolysaccharide-induced inflammation model. Alkaline phosphatase staining was used to evaluate alkaline phosphatase activity. Western blot and qRT - PCR were used to measure the expression of osteogenic-related markers after adding human recombinant Notum and Notum inhibitor ABC99. In addition, LiCl, an agonist of the Wnt/Beta-catenin signaling pathway, was added to explore using Western blot whether Notum was involved in regulating the osteogenic differentiation of human periodontal ligament stem cells through the Wnt/Beta-catenin signaling pathway. RESULTS: Notum was highly expressed in periodontal tissues of mice and lipopolysaccharide-induced inflammation cell model. The protein and messenger ribonucleic acid levels of hPDLSCs osteogenic markers were reduced after adding human recombinant Notum. However, the inhibitory effect of Notum on the osteogenic differentiation of hPDLSCs could be significantly reversed by adding LiCl. CONCLUSION: These results demonstrated that Notum inhibited the osteogenic differentiation of hPDLSCs probably via the Wnt/Beta-catenin the downstream signaling pathway.
ESTHER : Yang_2021_Arch.Oral.Biol_130_105211
PubMedSearch : Yang_2021_Arch.Oral.Biol_130_105211
PubMedID: 34352447

Title : Colorimetric detection of acetylcholinesterase and its inhibitor based on thiol-regulated oxidase-like activity of 2D palladium square nanoplates on reduced graphene oxide - Yan_2021_Mikrochim.Acta_188_162
Author(s) : Yan B , Liu W , Duan G , Ni P , Jiang Y , Zhang C , Wang B , Lu Y , Chen C
Ref : Mikrochim Acta , 188 :162 , 2021
Abstract : A convenient and sensitive colorimetric assay for acetylcholinesterase (AChE) and its inhibitor has been designed based on the oxidase-like activity of {100}-faceted Pd square nanoplates which are grown in situ on reduced graphene oxide (PdSP@rGO). PdSP@rGO can effectively catalyze the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) without the assistance of H(2)O(2) to generate blue oxidized TMB (oxTMB) with a characteristic absorption peak at 652 nm. In the presence of AChE, acetylthiocholine (ATCh), a typical AChE substrate, is hydrolyzed to thiocholine (TCh). The generated TCh can effectively inhibit the PdSP@rGO-triggered chromogenic reaction of TMB via cheating with Pd, resulting in color fading and decrease in absorbance. Thus, a sensitive probe for AChE activity is constructed with a working range of 0.25-5 mU mL(-1) and a limit of detection (LOD) of 0.0625 mU mL(-1). Furthermore, because of the inhibition effect of tacrine on AChE, tacrine is also detected through the colorimetric AChE assay system within the concentrations range 0.025-0.4 microM with a LOD of 0.00229 microM. Hence, a rapid and facile colorimetric procedure to sensitively detect AChE and its inhibitor can be anticipated through modulating the oxidase-like activity of PdSP@rGO. Colorimetric method for detection of AChE and its inhibitor is established by modulating the oxidase mimetic activity of {100}-faceted Pd square nanoplates on reduced graphene oxide (PdSP@rGO).
ESTHER : Yan_2021_Mikrochim.Acta_188_162
PubMedSearch : Yan_2021_Mikrochim.Acta_188_162
PubMedID: 33839958

Title : Insecticidal Activity of Artemisia vulgaris Essential Oil and Transcriptome Analysis of Tribolium castaneum in Response to Oil Exposure - Gao_2020_Front.Genet_11_589
Author(s) : Gao S , Zhang K , Wei L , Wei G , Xiong W , Lu Y , Zhang Y , Gao A , Li B
Ref : Front Genet , 11 :589 , 2020
Abstract : Red flour beetle (Tribolium castaneum) is one of the most destructive pests of stored cereals worldwide. The essential oil (EO) of Artemisia vulgaris (mugwort) is known to be a strong toxicant that inhibits the growth, development, and reproduction of T. castaneum. However, the molecular mechanisms underlying the toxic effects of A. vulgaris EO on T. castaneum remain unclear. Here, two detoxifying enzymes, carboxylesterase (CarEs) and cytochrome oxidase P450 (CYPs), were dramatically increased in red flour beetle larvae when they were exposed to A. vulgaris EO. Further, 758 genes were differentially expressed between EO treated and control samples. Based on Gene Ontology (GO) analysis, numerous differentially expressed genes (DEGs) were enriched for terms related to the regulation of biological processes, response to stimulus, and antigen processing and presentation. Our results indicated that A. vulgaris EO disturbed the antioxidant activity in larvae and partially inhibited serine protease (SP), cathepsin (CAT), and lipase signaling pathways, thus disrupting larval development and reproduction as well as down-regulating the stress response. Moreover, these DEGs showed that A. vulgaris indirectly affected the development and reproduction of beetles by inducing the expression of genes encoding copper-zinc-superoxide dismutase (CuZnSOD), heme peroxidase (HPX), antioxidant enzymes, and transcription factors. Moreover, the majority of DEGs were mapped to the drug metabolism pathway in the Kyoto Encyclopedia of Genes and Genomes (KEGG) database. Notably, the following genes were detected: 6 odorant binding proteins (OBPs), 5 chemosensory proteins (CSPs), 14 CYPs, 3 esterases (ESTs), 5 glutathione S-transferases (GSTs), 6 UDP-glucuronosyltransferases (UGTs), and 2 multidrug resistance proteins (MRPs), of which 8 CYPs, 2 ESTs, 2 GSTs, and 3 UGTs were up-regulated dramatically after exposure to A. vulgaris EO. The residual DEGs were significantly down-regulated in EO exposed larvae, implying that partial compensation of metabolism detoxification existed in treated beetles. Furthermore, A. vulgaris EO induced overexpression of OBP/CYP, and RNAi against these genes significantly increased mortality of larvae exposed to EO, providing further evidence for the involvement of OBP/CYP in EO metabolic detoxification in T. castaneum. Our results provide an overview of the transcriptomic changes in T. castaneum in response to A. vulgaris EO.
ESTHER : Gao_2020_Front.Genet_11_589
PubMedSearch : Gao_2020_Front.Genet_11_589
PubMedID: 32670352

Title : Anti-tubercular derivatives of rhein require activation by the monoglyceride lipase Rv0183 - Abrahams_2020_Cell.Surf_6_100040
Author(s) : Abrahams KA , Hu W , Li G , Lu Y , Richardson EJ , Loman NJ , Huang H , Besra GS
Ref : Cell Surf , 6 :100040 , 2020
Abstract : The emergence and perseverance of drug resistant strains of Mycobacterium tuberculosis (Mtb) ensures that drug discovery efforts remain at the forefront of tuberculosis research. There are numerous different approaches that can be employed to lead to the discovery of anti-tubercular agents. In this work, we endeavored to optimize the anthraquinone chemical scaffold of a known drug, rhein, converting it from a compound with negligible activity against Mtb, to a series of compounds with potent activity. Two compounds exhibited low toxicity and good liver microsome stability and were further progressed in attempts to identify the biological target. Whole genome sequencing of resistant isolates revealed inactivating mutations in a monoglyceride lipase. Over-expression trials and an enzyme assay confirmed that the designed compounds are prodrugs, activated by the monoglyceride lipase. We propose that rhein is the active moiety of the novel compounds, which requires chemical modifications to enable access to the cell through the extensive cell wall structure. This work demonstrates that re-engineering of existing antimicrobial agents is a valid method in the development of new anti-tubercular compounds.
ESTHER : Abrahams_2020_Cell.Surf_6_100040
PubMedSearch : Abrahams_2020_Cell.Surf_6_100040
PubMedID: 32743152
Gene_locus related to this paper: myctu-rv0183

Title : Lipase-Catalyzed Reactive Extrusion: Copolymerization of sigma-Caprolactone and w-Pentadecalactone - Li_2020_Macromol.Rapid.Commun_41_e2000417
Author(s) : Li C , Xu W , Lu Y , Gross RA
Ref : Macromol Rapid Commun , 41 :e2000417 , 2020
Abstract : This study assesses the use of immobilized lipase catalyst N435 during reactive extrusion (REX) versus magnetically stirred bulk and solution reaction conditions for the copolymerization of sigma-caprolactone with omega-pentadecalactone (CL/PDL 1:1 molar). N435-catalyzed REX for reaction times from 1 to 3 h results in total %-monomer conversion, M(n) , and D values increase from 92.7% to 98.8%, 36.1 to 51.3 kDa, and 1.85 to 1.96, respectively. Diad fraction analysis by quantitative (13) C NMR reveals that, after just 1 h, rapid N435-catalyzed transesterification reactions occur that give random copolyesters. In contrast, for bulk polymerization with magnetic stirring in round bottom flasks, reaction times from 1 to 3 h result in the following: M(n) increases from 12.4 to 25.6 kDa, D decreases from 2.98 to 1.87, and the randomness index increases from 0.74 and 0.86 as PDL*-PDL diads are dominant. These results highlight that REX avoids problems associated with internal batch mixing that are encountered in bulk polymerizations. In sharp contrast to a previous study of 1:1 molar PDL/delta-valerolactone (VL) copolymerizations by N435-catalyzed REX, VL %-conversion increases to just 40.1% in 1 h whereas CL reaches 94.7%.
ESTHER : Li_2020_Macromol.Rapid.Commun_41_e2000417
PubMedSearch : Li_2020_Macromol.Rapid.Commun_41_e2000417
PubMedID: 33047442
Gene_locus related to this paper: canar-LipB

Title : Total Synthesis and Biological Evaluation of Tiancimycins A and B, Yangpumicin A, and Related Anthraquinone-Fused Enediyne Antitumor Antibiotics - Nicolaou_2020_J.Am.Chem.Soc_142_2549
Author(s) : Nicolaou KC , Das D , Lu Y , Rout S , Pitsinos EN , Lyssikatos J , Schammel A , Sandoval J , Hammond M , Aujay M , Gavrilyuk J
Ref : Journal of the American Chemical Society , 142 :2549 , 2020
Abstract : The family of anthraquinone-fused enediyne antitumor antibiotics was established by the discovery of dynemicin A and deoxy-dynemicin A. It was then expanded, first by the isolation of uncialamycin, and then by the addition to the family of tiancimycins A-F and yangpumicin A. This family of natural products provides opportunities in total synthesis, biology, and medicine due to their novel and challenging molecular structures, intriguing biological properties and mechanism of action, and potential in targeted cancer therapies. Herein, the total syntheses of tiancimycins A and B, yangpumicin A, and a number of related anthraquinone-fused enediynes are described. Biological evaluation of the synthesized compounds revealed extremely potent cytotoxicities against a number of cell lines, thus enriching the structure-activity relationships within this class of compounds. The findings of these studies may facilitate future investigations directed toward antibody-drug conjugates for targeted cancer therapies and provide inspiration for further advances in total synthesis and chemical biology.
ESTHER : Nicolaou_2020_J.Am.Chem.Soc_142_2549
PubMedSearch : Nicolaou_2020_J.Am.Chem.Soc_142_2549
PubMedID: 31976660

Title : Genome of Tripterygium wilfordii and identification of cytochrome P450 involved in triptolide biosynthesis - Tu_2020_Nat.Commun_11_971
Author(s) : Tu L , Su P , Zhang Z , Gao L , Wang J , Hu T , Zhou J , Zhang Y , Zhao Y , Liu Y , Song Y , Tong Y , Lu Y , Yang J , Xu C , Jia M , Peters RJ , Huang L , Gao W
Ref : Nat Commun , 11 :971 , 2020
Abstract : Triptolide is a trace natural product of Tripterygium wilfordii. It has antitumor activities, particularly against pancreatic cancer cells. Identification of genes and elucidation of the biosynthetic pathway leading to triptolide are the prerequisite for heterologous bioproduction. Here, we report a reference-grade genome of T. wilfordii with a contig N50 of 4.36 Mb. We show that copy numbers of triptolide biosynthetic pathway genes are impacted by a recent whole-genome triplication event. We further integrate genomic, transcriptomic, and metabolomic data to map a gene-to-metabolite network. This leads to the identification of a cytochrome P450 (CYP728B70) that can catalyze oxidation of a methyl to the acid moiety of dehydroabietic acid in triptolide biosynthesis. We think the genomic resource and the candidate genes reported here set the foundation to fully reveal triptolide biosynthetic pathway and consequently the heterologous bioproduction.
ESTHER : Tu_2020_Nat.Commun_11_971
PubMedSearch : Tu_2020_Nat.Commun_11_971
PubMedID: 32080175
Gene_locus related to this paper: triwf-a0a7j7c8l4

Title : AChR myasthenia gravis switching to MuSK or double antibody positive myasthenia gravis in two children and literature review - Lu_2020_Neuromuscul.Disord__
Author(s) : Lu Y , Ran H , Yang W , Ma Q , Qiu L , Ou C , Chen P , Lin Z , Liu W
Ref : Neuromuscular Disorders , : , 2020
Abstract : Muscle-specific tyrosine kinase antibody (MuSK-Ab) and acetylcholine receptor antibody (AChR-Ab) coexistence in myasthenia gravis (MG) is very rare. In this report, two children with AChR-Ab switching to double antibody positive MG (DP-MG) or MuSK-Ab positive MG (MuSK-MG) are described. Six similar cases were found in the literature via online database search. Therefore, this study describes eight patients in total, six female and two male. The average age of onset was 7.25 +/- 5.95 years. Four AChR-MG patients switched to DP-MG with no known precipitating factor and four switched after thymectomy (two to MuSK-MG and two to DP-MG). After the serological switch, the patients transitioned to the phenotype of MuSK-MG and responded poorly to cholinesterase inhibitors and well to corticosteroids and plasma exchange.
ESTHER : Lu_2020_Neuromuscul.Disord__
PubMedSearch : Lu_2020_Neuromuscul.Disord__
PubMedID: 32387283

Title : A tunable bifunctional hollow Co(3)O(4)\/MO(3) (M = Mo, W) mixed-metal oxide nanozyme for sensing H(2)O(2) and screening acetylcholinesterase activity and its inhibitor - Zhang_2020_J.Mater.Chem.B_8_6459
Author(s) : Zhang X , Lu Y , Chen Q , Huang Y
Ref : J Mater Chem B , 8 :6459 , 2020
Abstract : A self-templated strategy was adopted to design hollow Co3O4/MO3 (M = Mo, W) mixed-metal oxides via the Mo or W doping of ZIF-67, and subsequent pyrolysis under an atmosphere of air at a low temperature of 450 degreesC. The hollow Co3O4/MO3 (M = Mo, W) mixed-metal oxides displayed tunable oxidase-like and peroxidase-like activities able to efficiently catalyze the oxidation of TMB to generate a deep blue color in the absence or presence of H2O2. Relative to that of the un-doped Co3O4, the oxidase mimic activity of the Mo-doped Co3O4 increased to 1.3 to 2.1-fold, while its peroxidase mimic activity increased to 7.1 to 19.9-fold, depending on different Mo doping amounts. The oxidase mimic activity of the W-doped Co3O4 increased to 2.1 to 2.3-fold, while its peroxidase mimic activity increased to 4.8 to 5.9-fold, depending on the different W doping amounts. The Mo- and W-doped Co3O4 nanohybrid exhibited both higher O2 and H2O2 activating capability, and their H2O2 activating capacity was superior to the O2 activating capability. Furthermore, the Mo- and W-doped Co3O4 nanohybrids exhibited similar O2 activating abilities, while the Mo-doped one displayed a higher H2O2 activating capability than the W-doped one. The discrepant peroxidase-like nature of Mo- and W-doped Co3O4 nanohybrids is likely attributed to their different catalytic mechanisms. The peroxidase-like activity of Mo-doped Co3O4 is highly related to the OH free radical, while that of W-doped Co3O4 is likely ascribed to the electron transfer between TMB and H2O2. The Km values of Co3O4/MoO3 for TMB and H2O2 were 0.0352 mM and 0.134 mM, which were 3.2- and 1.9-fold lower than that of pure Co3O4, respectively. A Co3O4/MoO3-based colorimetric platform was developed for the determination of H2O2 in the 0.1-200 microM range, with a limit of detection of 0.08 microM (3sigma). Based on the thiocholine (TCh) inhibition of the excellent peroxidase-like activity of Co3O4/MoO3 and the TCh generation via acetylcholinesterase (AChE) catalyzed hydrolysis of acetylthiocholine chloride (ATCh), the colorimetric platform was extended to screen AChE activity and its inhibitor.
ESTHER : Zhang_2020_J.Mater.Chem.B_8_6459
PubMedSearch : Zhang_2020_J.Mater.Chem.B_8_6459
PubMedID: 32597916

Title : Enhancing hydrogel-based long-lasting chemiluminescence by a platinum-metal organic framework and its application in array detection of pesticides and d-amino acids - Lu_2020_Nanoscale__
Author(s) : Lu Y , Wei M , Wang C , Wei W , Liu Y
Ref : Nanoscale , : , 2020
Abstract : Organophosphorus pesticides (OPs) are harmful to people's health and d-amino acids (d-AAs) in the human body are closely related to various diseases. So, detection of OPs in foods and d-AAs in serum is important for food safety and clinical diagnosis. Herein, a long-lasting chemiluminescence (CL) imaging sensor was constructed for the detection of OPs and d-AAs. The method was based on N-(4-aminobutyl)-N-ethylisoluminol/Co2+/chitosan (ABEI/Co2+/CS) hydrogels, where metal organic framework materials (MOF-Pt) were selected as catalysts to improve the sensitivity greatly. Under the catalysis of acetylcholinesterase (AChE) and choline oxidase (CHO), H2O2 was produced by using acetylcholine chloride (ACh) as a substrate, which was sensitive to the proposed CL system. OPs inhibited the activity of AChE and decreased the production of H2O2, reducing CL intensity. The linear range of the method for chlorpyrifos was 0.5 ng mL-1-1.0 mug mL-1, with a limit of detection (LOD) of 0.21 ng mL-1. Seventeen kinds of OPs can be visually and simultaneously discerned by the CL imager. On the other hand, d-AAs were catalyzed and oxidized by d-alpha-amino oxidase (DAAO) to produce H2O2. Thus, d-Ala in serum was used as a model to be detected by the proposed method. The linear range for d-Ala was 1.0 muM-10 mM, with an LOD of 0.12 muM.
ESTHER : Lu_2020_Nanoscale__
PubMedSearch : Lu_2020_Nanoscale__
PubMedID: 32053129

Title : First maternal uniparental disomy for chromosome 2 with PREPL novel frameshift mutation of congenital myasthenic syndrome 22 in an infant - Zhang_2020_Mol.Genet.Genomic.Med_8_e1144
Author(s) : Zhang P , Wu B , Lu Y , Ni Q , Liu R , Zhou W , Wang H
Ref : Mol Genet Genomic Med , 8 :e1144 , 2020
Abstract : BACKGROUND: Congenital myasthenic syndrome 22 (CMS22) is a rare autosomal recessive disorder due to isolated PREPL deficiency and characterized by neonatal hypotonia, muscular weakness, and feeding difficulties. Eight such cases have already been reported, while maternal uniparental disomy with a PREPL pathogenic mutation has never been involved. METHODS: Trio whole-exome sequencing (WES), comparative genomic hybridization microarray (arry-CGH), and Sanger sequencing were performed on a 6-month-old girl with severe neonatal hypotonia and feeding difficulties. Also, the phenotype and genotype of reported CMS22 patients were reviewed. RESULTS: In this female infant, we identified a novel homozygous frameshift mutation in PREPL (c.1282_1285delTTTG, p.Phe428Argfs*18) by trio-WES. Sanger sequencing confirmed that her mother was heterozygous and her father was normal. Trio-WES data showed that 96.70% (1668/1725) variants on chromosome 2 were homozygous and maternally inherited, suggesting maternal uniparental disomy of chromosome 2 [UPD(2)mat]. Array-CGH did not show copy number variants (CNVs) but revealed complete UPD(2). CONCLUSION: To date, nine patients with CMS22 have been reported including our patient, and we report the youngest and the first UPD(2)mat with PREPL novel homozygous pathogenic mutation case, which expand the mutation spectrum of PREPL gene.
ESTHER : Zhang_2020_Mol.Genet.Genomic.Med_8_e1144
PubMedSearch : Zhang_2020_Mol.Genet.Genomic.Med_8_e1144
PubMedID: 31985178
Gene_locus related to this paper: human-PREPL

Title : OSBPL2 Is Required for the Binding of COPB1 to ATGL and the Regulation of Lipid Droplet Lipolysis - Wang_2020_iScience_23_101252
Author(s) : Wang T , Wei Q , Liang L , Tang X , Yao J , Lu Y , Qu Y , Chen Z , Xing G , Cao X
Ref : iScience , 23 :101252 , 2020
Abstract : The accumulation of giant lipid droplets (LDs) increases the risk of metabolic disorders including obesity and insulin resistance. The lipolysis process involves the activation and transfer of lipase, but the molecular mechanism is not completely understood. The translocation of ATGL, a critical lipolysis lipase, from the ER to the LD surface is mediated by an energy catabolism complex. Oxysterol-binding protein-like 2 (OSBPL2/ORP2) is one of the lipid transfer proteins that regulates intracellular cholesterol homeostasis. A recent study has proven that Osbpl2(-/-) pigs exhibit hypercholesterolemia and obesity phenotypes with an increase in adipocytes. In this study, we identified that OSBPL2 links the endoplasmic reticulum (ER) with LDs, binds to COPB1, and mediates ATGL transport. We provide important insights into the function of OSBPL2, indicating that it is required for the regulation of lipid droplet lipolysis.
ESTHER : Wang_2020_iScience_23_101252
PubMedSearch : Wang_2020_iScience_23_101252
PubMedID: 32650117

Title : Artificial Nanometalloenzymes for Cooperative Tandem Catalysis - Li_2019_ACS.Appl.Mater.Interfaces_11_15718
Author(s) : Li H , Qiu C , Cao X , Lu Y , Li G , He X , Lu Q , Chen K , Ouyang P , Tan W
Ref : ACS Appl Mater Interfaces , 11 :15718 , 2019
Abstract : Artificial metalloenzymes that combine the advantages of natural enzymes and metal catalysts have been getting more attention in research. As a proof of concept, an artificial nanometalloenzyme (CALB-Shvo@MiMBN) was prepared by co-encapsulation of metallo-organic catalyst and enzyme in a soft nanocomposite consisting of 2-methylimidazole, metal ions, and biosurfactant in mild reaction conditions using a one-pot self-assembly method. The artificial nanometalloenzyme with lipase acted as the core, and the metallo-organic catalyst embedded in micropore exhibited a spherical structure of 30-50 nm in diameter. The artificial nanometalloenzyme showed high catalytic efficiency in the dynamic kinetic resolution of racemic primary amines or secondary alcohols compared to the one-pot catalytic reaction of immobilized lipase and free metallo-organic catalyst. This artificial nanometalloenzyme holds great promise for integrated enzymatic and heterogeneous catalysis.
ESTHER : Li_2019_ACS.Appl.Mater.Interfaces_11_15718
PubMedSearch : Li_2019_ACS.Appl.Mater.Interfaces_11_15718
PubMedID: 30986032

Title : Pharmacological activities of dihydrotanshinone I, a natural product from Salvia miltiorrhiza Bunge - Chen_2019_Pharmacol.Res_145_104254
Author(s) : Chen X , Yu J , Zhong B , Lu J , Lu JJ , Li S , Lu Y
Ref : Pharmacol Res , 145 :104254 , 2019
Abstract : Salvia miltiorrhiza Bunge (Danshen), a famous traditional Chinese herb, has been used clinically for the treatment of various diseases for centuries. Document data showed that tanshinones, a class of lipophilic abietane diterpenes rich in this herb, possess multiple biological effects in vitro and in vivo models. Among which, 15,16-dihydrotanshinone I (DHT) has received much attention in recent years. In this systematical review, we carefully selected, analyzed, and summarized high-quality publications related to pharmacological effects and the underlying mechanisms of DHT. DHT has anti-cancer, cardiovascular protective, anti-inflammation, anti-Alzheimer's disease, and other effects. Furthermore, several molecules such as hypoxia-inducible factor (HIF-1alpha), human antigen R (HuR), acetylcholinesterase (AchE), etc. have been identified as the potential targets for DHT. The diverse pharmacological activities of DHT provide scientific evidence for the local and traditional uses of Salvia miltiorrhiza Bunge. We concluded that DHT might serve as a lead compound for drug discovery in related diseases while further in-depth investigations are still needed.
ESTHER : Chen_2019_Pharmacol.Res_145_104254
PubMedSearch : Chen_2019_Pharmacol.Res_145_104254
PubMedID: 31054311

Title : Latrophilin mediates insecticides susceptibility and fecundity through two carboxylesterases, esterase4 and esterase6, in Tribolium castaneum - Wei_2019_Bull.Entomol.Res__1
Author(s) : Wei L , Gao S , Xiong W , Liu J , Mao J , Lu Y , Song X , Li B
Ref : Bull Entomol Res , :1 , 2019
Abstract : Latrophilin (LPH) is known as an adhesion G-protein-coupled receptor which involved in multiple physiological processes in organisms. Previous studies showed that lph not only involved the susceptibility to anticholinesterase insecticides but also affected fecundity in Tribolium castaneum. However, its regulatory mechanisms in these biological processes are still not clear. Here, we identified two potential downstream carboxylesterase (cce) genes of Tclph, esterase4 and esterase6, and further characterized their interactions with Tclph. After treatment of T. castaneum larvae with carbofuran or dichlorvos insecticides, the transcript levels of Tcest4 and Tcest6 were significantly induced from 12 to 72 h. RNAi against Tcest4 or Tcest6 led to the higher mortality compared with the controls after the insecticides treatment, suggesting that these two genes play a vital role in detoxification of insecticides in T. castaneum. Furthermore, with insecticides exposure to Tclph knockdown beetles, the expression of Tcest4 was upregulated but Tcest6 was downregulated, indicating that beetles existed a compensatory response against the insecticides. Additionally, RNAi of Tcest6 resulted in 43% reductions in female egg laying and completely inhibited egg hatching, which showed the similar phenotype as that of Tclph knockdown. These results indicated that Tclph affected fecundity by positively regulating Tcest6 expression. Our findings will provide a new insight into the molecular mechanisms of Tclph involved in physiological functions in T. castaneum.
ESTHER : Wei_2019_Bull.Entomol.Res__1
PubMedSearch : Wei_2019_Bull.Entomol.Res__1
PubMedID: 30789108

Title : Genetic Data from Nearly 63,000 Women of European Descent Predicts DNA Methylation Biomarkers and Epithelial Ovarian Cancer Risk - Yang_2019_Cancer.Res_79_505
Author(s) : Yang Y , Wu L , Shu X , Lu Y , Shu XO , Cai Q , Beeghly-Fadiel A , Li B , Ye F , Berchuck A , Anton-Culver H , Banerjee S , Benitez J , Bjorge L , Brenton JD , Butzow R , Campbell IG , Chang-Claude J , Chen K , Cook LS , Cramer DW , deFazio A , Dennis J , Doherty JA , Dork T , Eccles DM , Edwards DV , Fasching PA , Fortner RT , Gayther SA , Giles GG , Glasspool RM , Goode EL , Goodman MT , Gronwald J , Harris HR , Heitz F , Hildebrandt MA , Hogdall E , Hogdall CK , Huntsman DG , Kar SP , Karlan BY , Kelemen LE , Kiemeney LA , Kjaer SK , Koushik A , Lambrechts D , Le ND , Levine DA , Massuger LF , Matsuo K , May T , McNeish IA , Menon U , Modugno F , Monteiro AN , Moorman PG , Moysich KB , Ness RB , Nevanlinna H , Olsson H , Onland-Moret NC , Park SK , Paul J , Pearce CL , Pejovic T , Phelan CM , Pike MC , Ramus SJ , Riboli E , Rodriguez-Antona C , Romieu I , Sandler DP , Schildkraut JM , Setiawan VW , Shan K , Siddiqui N , Sieh W , Stampfer MJ , Sutphen R , Swerdlow AJ , Szafron LM , Teo SH , Tworoger SS , Tyrer JP , Webb PM , Wentzensen N , White E , Willett WC , Wolk A , Woo YL , Wu AH , Yan L , Yannoukakos D , Chenevix-Trench G , Sellers TA , Pharoah PDP , Zheng W , Long J
Ref : Cancer Research , 79 :505 , 2019
Abstract : DNA methylation is instrumental for gene regulation. Global changes in the epigenetic landscape have been recognized as a hallmark of cancer. However, the role of DNA methylation in epithelial ovarian cancer (EOC) remains unclear. In this study, high-density genetic and DNA methylation data in white blood cells from the Framingham Heart Study (N = 1,595) were used to build genetic models to predict DNA methylation levels. These prediction models were then applied to the summary statistics of a genome-wide association study (GWAS) of ovarian cancer including 22,406 EOC cases and 40,941 controls to investigate genetically predicted DNA methylation levels in association with EOC risk. Among 62,938 CpG sites investigated, genetically predicted methylation levels at 89 CpG were significantly associated with EOC risk at a Bonferroni-corrected threshold of P < 7.94 x 10(-7). Of them, 87 were located at GWAS-identified EOC susceptibility regions and two resided in a genomic region not previously reported to be associated with EOC risk. Integrative analyses of genetic, methylation, and gene expression data identified consistent directions of associations across 12 CpG, five genes, and EOC risk, suggesting that methylation at these 12 CpG may influence EOC risk by regulating expression of these five genes, namely MAPT, HOXB3, ABHD8, ARHGAP27, and SKAP1. We identified novel DNA methylation markers associated with EOC risk and propose that methylation at multiple CpG may affect EOC risk via regulation of gene expression. SIGNIFICANCE: Identification of novel DNA methylation markers associated with EOC risk suggests that methylation at multiple CpG may affect EOC risk through regulation of gene expression.
ESTHER : Yang_2019_Cancer.Res_79_505
PubMedSearch : Yang_2019_Cancer.Res_79_505
PubMedID: 30559148

Title : A Novel Dipeptidyl Peptidase IV Inhibitory Tea Peptide Improves Pancreatic beta-Cell Function and Reduces alpha-Cell Proliferation in Streptozotocin-Induced Diabetic Mice - Lu_2019_Int.J.Mol.Sci_20_
Author(s) : Lu Y , Lu P , Wang Y , Fang X , Wu J , Wang X
Ref : Int J Mol Sci , 20 : , 2019
Abstract : Dipeptidyl peptidase IV (DPP-IV) inhibitors occupy a growing place in the drugs used for the management of type 2 diabetes. Recently, food components, including food-derived bioactive peptides, have been suggested as sources of DPP-IV inhibitors without side effects. Chinese black tea is a traditional health beverage, and it was used for finding DPP-IV inhibitory peptides in this study. The ultra-filtrated fractions isolated from the aqueous extracts of black tea revealed DPP-IV inhibitory activity in vitro. Four peptides under 1 kDa were identified by SDS-PAGE and LC-MS/MS (Liquid Chromatography-Mass Spectrometry-Mass Spectrometry) from the ultra-filtrate. The peptide II (sequence: AGFAGDDAPR), with a molecular mass of 976 Da, showed the greatest DPP-IV inhibitory activity (in vitro) among the four peptides. After administration of peptide II (400 mg/day) for 57 days to streptozotocin (STZ)-induced hyperglycemic mice, the concentration of glucagon-like peptide-1 (GLP-1) in the blood increased from 9.85 +/- 1.96 pmol/L to 19.22 +/- 6.79 pmol/L, and the insulin level was increased 4.3-fold compared to that in STZ control mice. Immunohistochemistry revealed the improved function of pancreatic beta-cells and suppressed proliferation of pancreatic alpha-cells. This study provides new insight into the use of black tea as a potential resource of food-derived DPP-IV inhibitory peptides for the management of type 2 diabetes.
ESTHER : Lu_2019_Int.J.Mol.Sci_20_
PubMedSearch : Lu_2019_Int.J.Mol.Sci_20_
PubMedID: 30646613

Title : Therapeutic efficacy and safety of umbilical cord mesenchymal stem cell transplantation for liver cirrhosis in Chinese population: A meta-analysis - Sang_2018_Clin.Res.Hepatol.Gastroenterol_42_193
Author(s) : Sang W , Lv B , Li K , Lu Y
Ref : Clin Res Hepatol Gastroenterol , 42 :193 , 2018
Abstract : BACKGROUND AND OBJECTIVE: Mesenchymal stem cells transfusion has been considered as a promising option for liver cirrhosis (LC). The aim of this study was to systematically evaluate the efficacy and safety of umbilical cord mesenchymal stem cells (UMSC) combined with traditional supportive therapy (TST) for the treatment of patients with LC. METHODS: Data was extracted from clinical trials published on Web of Science, PubMed, EMBASE, Cochrane Library, Wanfang and CNKI database. The evaluated outcome measurements included liver function, coagulation function, liver fibrosis indexes, clinical symptoms, quality of life (QOL) and adverse events. RESULTS: A total of 14 trials including 717 LC patients met our selection criteria were involved. The liver function of LC patients was significantly improved after combined therapy (UMSC plus TST), indicated by decreased total bilirubin, alanine aminotransferase and prothrombin time, and increased serum albumin, cholinesterase and prothrombin activity. The QOL of patients was also improved after UMSC therapy. Compared with TST alone, the combined therapy showed better treatment effect based on measurements of hyaluronic acid (OR=-143.20, CI=-181.58 to -104.82, P<0.00001), laminin (OR=-50.65, CI=-53.70 to -47.61, P<0.00001), type III procollagen (OR=-8.68, CI=-9.00 to -8.36, P<0.00001), type IV collagen (OR=-105.79, CI=-132.44 to -79.14, P<0.00001) and plasma prolidase (OR=-876.54, CI=-911.89 to -840.56, P<0.00001). Moreover, the patients' clinical symptoms including fatigue (4th, P=0.003; 8th, P=0.01), appetite (4th, P<0.0001; 8th, P=0.06), ascites (4th, P=0.03; 8th, P=0.17), and abdominal distension (4th, P=0.0008; 8th, P=0.64) were also improved in patients treated by combined therapy without adverse events observed. CONCLUSION: UMSC and TST combined therapy for LC patients improved their liver function, clinical symptoms and QOL without severe adverse events, therefore is safe and effective in LC therapy.
ESTHER : Sang_2018_Clin.Res.Hepatol.Gastroenterol_42_193
PubMedSearch : Sang_2018_Clin.Res.Hepatol.Gastroenterol_42_193
PubMedID: 29223366

Title : Midgut transcriptomal response of the rice leaffolder, Cnaphalocrocis medinalis (Guenee) to Cry1C toxin - Yang_2018_PLoS.One_13_e0191686
Author(s) : Yang Y , Xu H , Lu Y , Wang C , Lu Z
Ref : PLoS ONE , 13 :e0191686 , 2018
Abstract : Cnaphalocrocis medinalis (Guenee) is one of the important insect pests in rice field. Bt agents were recommended in the C. medinalis control and Bt rice is bred as a tactic to control this insect. However, the tolerance or resistance of insect to Bt protein is a main threat to the application of Bt protein. In order to investigate the response of C. medinalis transcriptome in defending a Cry1C toxin, high-through RNA-sequencing was carried in the C. medinalis larvae treated with and without Cry1C toxin. A total of 35,586 high-quality unigenes was annotated in the transcriptome of C. medinalis midgut. The comparative analysis identified 6,966 differently expressed unigenes (DEGs) between the two treatments. GO analysis showed that these genes involved in proteolysis and extracellular region. Among these DEGs, carboxylesterase, glutathione S-transferase and P450 were differently expressed in the treated C. medinalis midgut. Furthermore, trypsin, chymotrypsin, and carboxypeptidase were identified in DEGs, and most of them up-regulated. In addition, thirteen ABC transporters were downregulated and three upregulated in Cry1C-treated C. medinalis midgut. Based on the pathway analysis, antigen processing and presentation pathway, and chronic myeloid leukemia pathway were significant in C. medinalis treated with Cry1C toxin. These results indicated that serine protease, detoxification enzymes and ABC transporter, antigen processing and presentation pathway, and chronic myeloid leukemia pathway may involved in the response of C. medinalis to Cry1C toxin. This study provides a transcriptomal foundation for the identification and functional characterization of genes involved in the toxicity of Bt Cry protein against C. medinalis, and provides potential clues to the studies on the tolerance or resistance of an agriculturally important insect pest C. medinalis to Cry1C toxin.
ESTHER : Yang_2018_PLoS.One_13_e0191686
PubMedSearch : Yang_2018_PLoS.One_13_e0191686
PubMedID: 29360856

Title : Inhibitory Influence of Panax notoginseng Saponins on Aspirin Hydrolysis in Human Intestinal Caco-2 Cells - Sun_2018_Molecules_23_
Author(s) : Sun Z , Wu Y , Yang B , Zhu B , Hu S , Lu Y , Zhao B , Du S
Ref : Molecules , 23 : , 2018
Abstract : Herb-drug interactions are important safety concerns in clinical practice. The interactions occur firstly in the intestinal absorption for orally administered drugs. Aspirin and Panax notoginseng saponins (PNS)-based drugs are often combined in China to prevent larger-artery atherosclerosis. Here, we aimed to characterize the aspirin transport across Caco-2 cell monolayers, a model of the intestinal absorption, and further to evaluate the influence of PNS on aspirin hydrolysis and the relating mechanisms. Transcellular transport of aspirin and the influence of PNS were explored using Caco-2 cell monolayers. The protein expression of human carboxylesterase 1 (hCE1) and hCE2 in Caco-2 cells after PNS treatment was analyzed by ELISA, and the mRNA level were determined by qRT-PCR. In the study, Caco-2 cells showed high level of hydrolase activity, and most aspirin was hydrolyzed inside the cells during the transport process. Interestingly, PNS were demonstrated to inhibit the esterase activities responsible for aspirin hydrolysis in Caco-2 cells. PNS could also decrease the protein expression of hCE1 and hCE2, whereas exhibited minor effect on the mRNA expression. These results indicated that oral administration of PNS-based drugs might inhibit the hydrolysis of aspirin during intestinal absorption thus promoting its bioavailability.
ESTHER : Sun_2018_Molecules_23_
PubMedSearch : Sun_2018_Molecules_23_
PubMedID: 29463025

Title : Excitatory motor neurons are local oscillators for backward locomotion - Gao_2018_Elife_7_
Author(s) : Gao S , Guan SA , Fouad AD , Meng J , Kawano T , Huang YC , Li Y , Alcaire S , Hung W , Lu Y , Qi YB , Jin Y , Alkema M , Fang-Yen C , Zhen M
Ref : Elife , 7 : , 2018
Abstract : Cell- or network-driven oscillators underlie motor rhythmicity. The identity of C. elegans oscillators remains unknown. Through cell ablation, electrophysiology, and calcium imaging, we show: (1) forward and backward locomotion is driven by different oscillators; (2) the cholinergic and excitatory A-class motor neurons exhibit intrinsic and oscillatory activity that is sufficient to drive backward locomotion in the absence of premotor interneurons; (3) the UNC-2 P/Q/N high-voltage-activated calcium current underlies A motor neuron's oscillation; (4) descending premotor interneurons AVA, via an evolutionarily conserved, mixed gap junction and chemical synapse configuration, exert state-dependent inhibition and potentiation of A motor neuron's intrinsic activity to regulate backward locomotion. Thus, motor neurons themselves derive rhythms, which are dually regulated by the descending interneurons to control the reversal motor state. These and previous findings exemplify compression: essential circuit properties are conserved but executed by fewer numbers and layers of neurons in a small locomotor network.
ESTHER : Gao_2018_Elife_7_
PubMedSearch : Gao_2018_Elife_7_
PubMedID: 29360035

Title : Draft genome sequence of Camellia sinensis var. sinensis provides insights into the evolution of the tea genome and tea quality - Wei_2018_Proc.Natl.Acad.Sci.U.S.A_115_E4151
Author(s) : Wei C , Yang H , Wang S , Zhao J , Liu C , Gao L , Xia E , Lu Y , Tai Y , She G , Sun J , Cao H , Tong W , Gao Q , Li Y , Deng W , Jiang X , Wang W , Chen Q , Zhang S , Li H , Wu J , Wang P , Li P , Shi C , Zheng F , Jian J , Huang B , Shan D , Shi M , Fang C , Yue Y , Li F , Li D , Wei S , Han B , Jiang C , Yin Y , Xia T , Zhang Z , Bennetzen JL , Zhao S , Wan X
Ref : Proc Natl Acad Sci U S A , 115 :E4151 , 2018
Abstract : Tea, one of the world's most important beverage crops, provides numerous secondary metabolites that account for its rich taste and health benefits. Here we present a high-quality sequence of the genome of tea, Camellia sinensis var. sinensis (CSS), using both Illumina and PacBio sequencing technologies. At least 64% of the 3.1-Gb genome assembly consists of repetitive sequences, and the rest yields 33,932 high-confidence predictions of encoded proteins. Divergence between two major lineages, CSS and Camellia sinensis var. assamica (CSA), is calculated to approximately 0.38 to 1.54 million years ago (Mya). Analysis of genic collinearity reveals that the tea genome is the product of two rounds of whole-genome duplications (WGDs) that occurred approximately 30 to 40 and approximately 90 to 100 Mya. We provide evidence that these WGD events, and subsequent paralogous duplications, had major impacts on the copy numbers of secondary metabolite genes, particularly genes critical to producing three key quality compounds: catechins, theanine, and caffeine. Analyses of transcriptome and phytochemistry data show that amplification and transcriptional divergence of genes encoding a large acyltransferase family and leucoanthocyanidin reductases are associated with the characteristic young leaf accumulation of monomeric galloylated catechins in tea, while functional divergence of a single member of the glutamine synthetase gene family yielded theanine synthetase. This genome sequence will facilitate understanding of tea genome evolution and tea metabolite pathways, and will promote germplasm utilization for breeding improved tea varieties.
ESTHER : Wei_2018_Proc.Natl.Acad.Sci.U.S.A_115_E4151
PubMedSearch : Wei_2018_Proc.Natl.Acad.Sci.U.S.A_115_E4151
PubMedID: 29678829
Gene_locus related to this paper: camsi-a0a4s4dr18 , camsi-a0a4s4etg9 , camsi-a0a4s4e3j5 , camsi-a0a4s4d2s5 , camsi-a0a4s4duc4 , camsi-a0a4v3wr80 , camsi-a0a4v3wpu4

Title : Characterization of a Lipase From the Silkworm Intestinal Bacterium Bacillus pumilus With Antiviral Activity Against Bombyx mori (Lepidoptera: Bombycidae) Nucleopolyhedrovirus In Vitro - Liu_2018_J.Insect.Sci_18_
Author(s) : Liu R , Wang W , Liu X , Lu Y , Xiang T , Zhou W , Wan Y
Ref : J Insect Sci , 18 : , 2018
Abstract : To investigate whether Bombyx mori Linnaeus (Lepidoptera: Bombycidae) intestinal microorganism play a role in the host defence system against viral pathogens, a lipase gene from the silkworm intestinal bacterium Bacillus pumilus SW41 was characterized, and antiviral activity of its protein against B. mori nucleopolyhedrovirus (BmNPV) was tested. The lipase gene has an open-reading frame of 648 bp, which encodes a 215-amino-acid enzyme with a 34-amino-acid signal peptide. The recombinant lipase (without signal peptide) was expressed and purified by using an Escherichia coli BL21 (DE3) expression system. The total enzyme activity of this recombinant lipase reached 277.40 U/mg at the optimum temperature of 25 degrees C and optimum pH value of 8.0. The antiviral test showed that a relative high concentration of the recombinant lipase reduced BmNPV infectivity in vitro, which resulted in decreased viral DNA abundance and viral occlusion bodies. Besides, the preincubation method also suggested that the lipase probably directly acting on the budded virions. The results suggest that the lipase from intestinal bacterium B. pumilus SW41 is a potential antiviral factor for silkworm against BmNPV.
ESTHER : Liu_2018_J.Insect.Sci_18_
PubMedSearch : Liu_2018_J.Insect.Sci_18_
PubMedID: 30395292

Title : The opium poppy genome and morphinan production - Guo_2018_Science_362_343
Author(s) : Guo L , Winzer T , Yang X , Li Y , Ning Z , He Z , Teodor R , Lu Y , Bowser TA , Graham IA , Ye K
Ref : Science , 362 :343 , 2018
Abstract : Morphinan-based painkillers are derived from opium poppy (Papaver somniferum L.). We report a draft of the opium poppy genome, with 2.72 gigabases assembled into 11 chromosomes with contig N50 and scaffold N50 of 1.77 and 204 megabases, respectively. Synteny analysis suggests a whole-genome duplication at ~7.8 million years ago and ancient segmental or whole-genome duplication(s) that occurred before the Papaveraceae-Ranunculaceae divergence 110 million years ago. Syntenic blocks representative of phthalideisoquinoline and morphinan components of a benzylisoquinoline alkaloid cluster of 15 genes provide insight into how this cluster evolved. Paralog analysis identified P450 and oxidoreductase genes that combined to form the STORR gene fusion essential for morphinan biosynthesis in opium poppy. Thus, gene duplication, rearrangement, and fusion events have led to evolution of specialized metabolic products in opium poppy.
ESTHER : Guo_2018_Science_362_343
PubMedSearch : Guo_2018_Science_362_343
PubMedID: 30166436
Gene_locus related to this paper: papso-a0a4y7jba3 , papso-a0a4y7jac2 , papso-a0a4y7kic2

Title : Pyridostigmine protects against cardiomyopathy associated with adipose tissue browning and improvement of vagal activity in high-fat diet rats - Lu_2018_Biochim.Biophys.Acta_1864_1037
Author(s) : Lu Y , Wu Q , Liu LZ , Yu XJ , Liu JJ , Li MX , Zang WJ
Ref : Biochimica & Biophysica Acta , 1864 :1037 , 2018
Abstract : Obesity, a major contributor to the development of cardiovascular diseases, is associated with an autonomic imbalance characterized by sympathetic hyperactivity and diminished vagal activity. Vagal activation plays important roles in weight loss and improvement of cardiac function. Pyridostigmine is a reversible acetylcholinesterase inhibitor, but whether it ameliorates cardiac lipid accumulation and cardiac remodeling in rats fed a high-fat diet has not been determined. This study investigated the effects of pyridostigmine on high-fat diet-induced cardiac dysfunction and explored the potential mechanisms. Rats were fed a normal or high-fat diet and treated with pyridostigmine. Vagal discharge was evaluated using the BL-420S system, and cardiac function by echocardiograms. Lipid deposition and cardiac remodeling were determined histologically. Lipid utility was assessed by qPCR. A high-fat diet led to a significant reduction in vagal discharge and lipid utility and a marked increase in lipid accumulation, cardiac remodeling, and cardiac dysfunction. Pyridostigmine improved vagal activity and lipid metabolism disorder and cardiac remodeling, accompanied by an improvement of cardiac function in high-fat diet-fed rats. An increase in the browning of white adipose tissue in pyridostigmine-treated rats was also observed and linked to the expression of UCP-1 and CIDEA. Additionally, pyridostigmine facilitated activation of brown adipose tissue via activation of the SIRT-1/AMPK/PGC-1alpha pathway. In conclusion, a high-fat diet resulted in cardiac lipid accumulation, cardiac remodeling, and a significant decrease in vagal discharge. Pyridostigmine ameliorated cardiomyopathy, an effect related to reduced cardiac lipid accumulation, and facilitated the browning of white adipose tissue while activating brown adipose tissue.
ESTHER : Lu_2018_Biochim.Biophys.Acta_1864_1037
PubMedSearch : Lu_2018_Biochim.Biophys.Acta_1864_1037
PubMedID: 29309922

Title : Sublethal or not? Responses of multiple biomarkers in Daphnia magna to single and joint effects of BDE-47 and BDE-209 - Xiong_2018_Ecotoxicol.Environ.Saf_164_164
Author(s) : Xiong Q , Shi Y , Lu Y , Pan K , Dakhil MA , Zhang L , Xiao Y
Ref : Ecotoxicology & Environmental Safety , 164 :164 , 2018
Abstract : Polybrominated diphenyl ethers (PBDEs) are extremely incessant anthropogenic contaminants found in the environment, with dreadful risk to aquatic ecosystems. However, there is a limited amount of data concerning their impacts on freshwater organisms. 2,2',3,3',4,4',5,5',6,6'-decabromodiphenyl ether (BDE-209) and 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) are significant components of total PBDEs in water. The sublethal effects of BDE-47, BDE-209 and their binary mixtures on the aquatic organism Daphnia magna were investigated in acute and chronic exposure experiments. Immobilization and heartbeat were studied in daphnids after 48h of exposure. Mortality rate, breed number, Cholinesterase (ChE), Glutathione S-transferases (GST) and Catalase (CAT) activities were evaluated after 21 days of exposure. The results showed that at 100 and 200mug/L concentration of BDE-47, immobilization rate of daphnids were inhibited by 44.0+/-16.7% and 88.0+/-10.9%, respectively. The binary mixture of BDE-47 and BDE-209 had uncongenial effects on immobilization of D. magna under acute toxicity test. BDE-209 significantly increased the heartbeat rate of daphnids, which increased even further when combined with BDE-47. After 21 days of exposure, daphnids exposed to single BDE-47 were physiologically altered. The combination of BDE-47 with BDE-209 significantly decreased the mortality rate of daphnids. Irrespective of the concentration, higher numbers of offsprings were produced in the mixtures compared to BDE-47 treatment alone. ChE activities significantly (p<0.05) decreased at concentrations of 2 and 4mug/L in single BDE-47 treatment, while GST activity significantly (p<0.05) decreased at 0.5mug/L. CAT activities significantly increased with BDE-47 treatments in all the tested concentrations (p<0.05). The mixtures significantly affect ChE (p<0.05), GST (p<0.05) and CAT activities (p<0.05). The results illustrated that the toxicity of the mixture of PBDE congeners exposed to aquatic organisms may have antagonistic effects. The 21 days chronic test in this study suggests that acute toxicity tests, i.e. 48-h tests, using Daphnia may lead to underestimation of risks associated with PBDEs, especially, BDE-209. Hence, there is a necessity to re-examine PBDE congeners' environmental risk in aquatic organisms.
ESTHER : Xiong_2018_Ecotoxicol.Environ.Saf_164_164
PubMedSearch : Xiong_2018_Ecotoxicol.Environ.Saf_164_164
PubMedID: 30107326

Title : Protein-altering variants associated with body mass index implicate pathways that control energy intake and expenditure in obesity - Turcot_2018_Nat.Genet_50_26
Author(s) : Turcot V , Lu Y , Highland HM , Schurmann C , Justice AE , Fine RS , Bradfield JP , Esko T , Giri A , Graff M , Guo X , Hendricks AE , Karaderi T , Lempradl A , Locke AE , Mahajan A , Marouli E , Sivapalaratnam S , Young KL , Alfred T , Feitosa MF , Masca NGD , Manning AK , Medina-Gomez C , Mudgal P , Ng MCY , Reiner AP , Vedantam S , Willems SM , Winkler TW , Abecasis G , Aben KK , Alam DS , Alharthi SE , Allison M , Amouyel P , Asselbergs FW , Auer PL , Balkau B , Bang LE , Barroso I , Bastarache L , Benn M , Bergmann S , Bielak LF , Bluher M , Boehnke M , Boeing H , Boerwinkle E , Boger CA , Bork-Jensen J , Bots ML , Bottinger EP , Bowden DW , Brandslund I , Breen G , Brilliant MH , Broer L , Brumat M , Burt AA , Butterworth AS , Campbell PT , Cappellani S , Carey DJ , Catamo E , Caulfield MJ , Chambers JC , Chasman DI , Chen YI , Chowdhury R , Christensen C , Chu AY , Cocca M , Collins FS , Cook JP , Corley J , Corominas Galbany J , Cox AJ , Crosslin DS , Cuellar-Partida G , D'Eustacchio A , Danesh J , Davies G , Bakker PIW , Groot MCH , Mutsert R , Deary IJ , Dedoussis G , Demerath EW , Heijer M , Hollander AI , Ruijter HM , Dennis JG , Denny JC , Angelantonio E , Drenos F , Du M , Dube MP , Dunning AM , Easton DF , Edwards TL , Ellinghaus D , Ellinor PT , Elliott P , Evangelou E , Farmaki AE , Farooqi IS , Faul JD , Fauser S , Feng S , Ferrannini E , Ferrieres J , Florez JC , Ford I , Fornage M , Franco OH , Franke A , Franks PW , Friedrich N , Frikke-Schmidt R , Galesloot TE , Gan W , Gandin I , Gasparini P , Gibson J , Giedraitis V , Gjesing AP , Gordon-Larsen P , Gorski M , Grabe HJ , Grant SFA , Grarup N , Griffiths HL , Grove ML , Gudnason V , Gustafsson S , Haessler J , Hakonarson H , Hammerschlag AR , Hansen T , Harris KM , Harris TB , Hattersley AT , Have CT , Hayward C , He L , Heard-Costa NL , Heath AC , Heid IM , Helgeland O , Hernesniemi J , Hewitt AW , Holmen OL , Hovingh GK , Howson JMM , Hu Y , Huang PL , Huffman JE , Ikram MA , Ingelsson E , Jackson AU , Jansson JH , Jarvik GP , Jensen GB , Jia Y , Johansson S , Jorgensen ME , Jorgensen T , Jukema JW , Kahali B , Kahn RS , Kahonen M , Kamstrup PR , Kanoni S , Kaprio J , Karaleftheri M , Kardia SLR , Karpe F , Kathiresan S , Kee F , Kiemeney LA , Kim E , Kitajima H , Komulainen P , Kooner JS , Kooperberg C , Korhonen T , Kovacs P , Kuivaniemi H , Kutalik Z , Kuulasmaa K , Kuusisto J , Laakso M , Lakka TA , Lamparter D , Lange EM , Lange LA , Langenberg C , Larson EB , Lee NR , Lehtimaki T , Lewis CE , Li H , Li J , Li-Gao R , Lin H , Lin KH , Lin LA , Lin X , Lind L , Lindstrom J , Linneberg A , Liu CT , Liu DJ , Liu Y , Lo KS , Lophatananon A , Lotery AJ , Loukola A , Luan J , Lubitz SA , Lyytikainen LP , Mannisto S , Marenne G , Mazul AL , McCarthy MI , McKean-Cowdin R , Medland SE , Meidtner K , Milani L , Mistry V , Mitchell P , Mohlke KL , Moilanen L , Moitry M , Montgomery GW , Mook-Kanamori DO , Moore C , Mori TA , Morris AD , Morris AP , Muller-Nurasyid M , Munroe PB , Nalls MA , Narisu N , Nelson CP , Neville M , Nielsen SF , Nikus K , Njolstad PR , Nordestgaard BG , Nyholt DR , O'Connel JR , O'Donoghue ML , Olde Loohuis LM , Ophoff RA , Owen KR , Packard CJ , Padmanabhan S , Palmer CNA , Palmer ND , Pasterkamp G , Patel AP , Pattie A , Pedersen O , Peissig PL , Peloso GM , Pennell CE , Perola M , Perry JA , Perry JRB , Pers TH , Person TN , Peters A , Petersen ERB , Peyser PA , Pirie A , Polasek O , Polderman TJ , Puolijoki H , Raitakari OT , Rasheed A , Rauramaa R , Reilly DF , Renstrom F , Rheinberger M , Ridker PM , Rioux JD , Rivas MA , Roberts DJ , Robertson NR , Robino A , Rolandsson O , Rudan I , Ruth KS , Saleheen D , Salomaa V , Samani NJ , Sapkota Y , Sattar N , Schoen RE , Schreiner PJ , Schulze MB , Scott RA , Segura-Lepe MP , Shah SH , Sheu WH , Sim X , Slater AJ , Small KS , Smith AV , Southam L , Spector TD , Speliotes EK , Starr JM , Stefansson K , Steinthorsdottir V , Stirrups KE , Strauch K , Stringham HM , Stumvoll M , Sun L , Surendran P , Swift AJ , Tada H , Tansey KE , Tardif JC , Taylor KD , Teumer A , Thompson DJ , Thorleifsson G , Thorsteinsdottir U , Thuesen BH , Tonjes A , Tromp G , Trompet S , Tsafantakis E , Tuomilehto J , Tybjaerg-Hansen A , Tyrer JP , Uher R , Uitterlinden AG , Uusitupa M , Laan SW , Duijn CM , Leeuwen N , van Setten J , Vanhala M , Varbo A , Varga TV , Varma R , Velez Edwards DR , Vermeulen SH , Veronesi G , Vestergaard H , Vitart V , Vogt TF , Volker U , Vuckovic D , Wagenknecht LE , Walker M , Wallentin L , Wang F , Wang CA , Wang S , Wang Y , Ware EB , Wareham NJ , Warren HR , Waterworth DM , Wessel J , White HD , Willer CJ , Wilson JG , Witte DR , Wood AR , Wu Y , Yaghootkar H , Yao J , Yao P , Yerges-Armstrong LM , Young R , Zeggini E , Zhan X , Zhang W , Zhao JH , Zhao W , Zhou W , Zondervan KT , Rotter JI , Pospisilik JA , Rivadeneira F , Borecki IB , Deloukas P , Frayling TM , Lettre G , North KE , Lindgren CM , Hirschhorn JN , Loos RJF
Ref : Nat Genet , 50 :26 , 2018
Abstract : Genome-wide association studies (GWAS) have identified >250 loci for body mass index (BMI), implicating pathways related to neuronal biology. Most GWAS loci represent clusters of common, noncoding variants from which pinpointing causal genes remains challenging. Here we combined data from 718,734 individuals to discover rare and low-frequency (minor allele frequency (MAF) < 5%) coding variants associated with BMI. We identified 14 coding variants in 13 genes, of which 8 variants were in genes (ZBTB7B, ACHE, RAPGEF3, RAB21, ZFHX3, ENTPD6, ZFR2 and ZNF169) newly implicated in human obesity, 2 variants were in genes (MC4R and KSR2) previously observed to be mutated in extreme obesity and 2 variants were in GIPR. The effect sizes of rare variants are ~10 times larger than those of common variants, with the largest effect observed in carriers of an MC4R mutation introducing a stop codon (p.Tyr35Ter, MAF = 0.01%), who weighed ~7 kg more than non-carriers. Pathway analyses based on the variants associated with BMI confirm enrichment of neuronal genes and provide new evidence for adipocyte and energy expenditure biology, widening the potential of genetically supported therapeutic targets in obesity.
ESTHER : Turcot_2018_Nat.Genet_50_26
PubMedSearch : Turcot_2018_Nat.Genet_50_26
PubMedID: 29273807

Title : Cloning, expression, and functional analysis of two acetylcholinesterase genes in Spodoptera litura (Lepidoptera: Noctuidae) - Salim_2017_Comp.Biochem.Physiol.B.Biochem.Mol.Biol_206_16
Author(s) : Salim AM , Shakeel M , Ji J , Kang T , Zhang Y , Ali E , Xiao Z , Lu Y , Wan H , Li J
Ref : Comparative Biochemistry & Physiology B Biochem Mol Biol , 206 :16 , 2017
Abstract : Two acetylcholinesterase genes (SlAce1 and SlAce2) were cloned from Spodoptera litura, which is an important pest that causes widespread economic damage to vegetables and ornamental plants. We analyzed their expression patterns and compared their biological functions by using RNA interference. Our results showed that SlAce1 and SlAce2 cDNA contains 2085bp and 1917bp nucleotides and encoding proteins of 694 and 638 amino acid residues, respectively. Phylogenic analysis indicated that the lineage of SlAce genes and SlAce1 was completely different from SlAce2. Although both genes were expressed in all developmental stages and majorly in the brain. The expression levels of the both genes were suppressed by inserting their related dsRNA in the 6th instar larvae, which led to 47.3% (SlAce1) and 37.9% (SlAce2) mortality. Interestingly, the suppression of the SlAce2 transcripts also led to significant reductions in the fecundity, hatching, and offspring in the parental generation of S. litura. It is concluded that SlAce2 is responsible for the hydrolysis of acetylcholine and also plays role in female breeding, embryo progress, and the development of progeny. Considerable larval mortality was observed after both AChE genes (i.e. Ace1 and Ace2) were silenced in S. litura confirms its insecticidal effectiveness, which provided a molecular basis in biological pest control approach.
ESTHER : Salim_2017_Comp.Biochem.Physiol.B.Biochem.Mol.Biol_206_16
PubMedSearch : Salim_2017_Comp.Biochem.Physiol.B.Biochem.Mol.Biol_206_16
PubMedID: 28111266
Gene_locus related to this paper: spolt-ACHE2 , spolt-ACHE1

Title : Long-term administration of pyridostigmine attenuates pressure overload-induced cardiac hypertrophy by inhibiting calcineurin signalling - Lu_2017_J.Cell.Mol.Med_21_2106
Author(s) : Lu Y , Zhao M , Liu JJ , He X , Yu XJ , Liu LZ , Sun L , Chen LN , Zang WJ
Ref : J Cell Mol Med , 21 :2106 , 2017
Abstract : Cardiac hypertrophy is associated with autonomic imbalance, characterized by enhanced sympathetic activity and withdrawal of parasympathetic control. Increased parasympathetic function improves ventricular performance. However, whether pyridostigmine, a reversible acetylcholinesterase inhibitor, can offset cardiac hypertrophy induced by pressure overload remains unclear. Hence, this study aimed to determine whether pyridostigmine can ameliorate pressure overload-induced cardiac hypertrophy and identify the underlying mechanisms. Rats were subjected to either sham or constriction of abdominal aorta surgery and treated with or without pyridostigmine for 8 weeks. Vagal activity and cardiac function were determined using PowerLab. Cardiac hypertrophy was evaluated using various histological stains. Protein markers for cardiac hypertrophy were quantitated by Western blot and immunoprecipitation. Pressure overload resulted in a marked reduction in vagal discharge and a profound increase in cardiac hypertrophy index and cardiac dysfunction. Pyridostigmine increased the acetylcholine levels by inhibiting acetylcholinesterase in rats with pressure overload. Pyridostigmine significantly attenuated cardiac hypertrophy based on reduction in left ventricular weight/body weight, suppression of the levels of atrial natriuretic peptide, brain natriuretic peptide and beta-myosin heavy chain, and a reduction in cardiac fibrosis. These effects were accompanied by marked improvement of cardiac function. Additionally, pyridostigmine inhibited the CaN/NFAT3/GATA4 pathway and suppressed Orai1/STIM1 complex formation. In conclusion, pressure overload resulted in cardiac hypertrophy, cardiac dysfunction and a significant reduction in vagal discharge. Pyridostigmine attenuated cardiac hypertrophy and improved cardiac function, which was related to improved cholinergic transmission efficiency (decreased acetylcholinesterase and increased acetylcholine), inhibition of the CaN/NFAT3/GATA4 pathway and suppression of the interaction of Orai1/STIM1.
ESTHER : Lu_2017_J.Cell.Mol.Med_21_2106
PubMedSearch : Lu_2017_J.Cell.Mol.Med_21_2106
PubMedID: 28296184

Title : Regulation of growth, antioxidant capacity, fatty acid profiles, hematological characteristics and expression of lipid related genes by different dietary n-3 highly unsaturated fatty acids in juvenile black seabream (Acanthopagrus schlegelii) - Jin_2017_Aquaculture_471_55
Author(s) : Jin M , Lu Y , Yuan Y , Li Y , Qiu H , Sun P , Ma H-N , Ding L-Y , Zhou Q-C
Ref : Aquaculture , 471 :55 , 2017
Abstract : An 8-week feeding trial was conducted to investigate the effects of dietary n-3 highly unsaturated fatty acid (n-3HUFA) on growth performance, antioxidant capacity, fatty acid profiles, hematological characteristics and expression of some lipid related genes of juvenile black seabream (Acanthopagrus schlegelii) (initial weight 3.770.00g). Five isonitrogenous and isolipidic experimental diets were formulated with graded levels of n-3 HUFA (0.23, 0.87, 1.29, 1.75 and 2.53% of dry weight, DHA/EPA ratio approximately at 1.0). The results revealed that fish fed the diet containing 1.75% n-3 HUFA had higher weight gain (WG) and specific growth rate (SGR) than those fed the control diet. Fish fed diets containing 1.29% and 1.75% n-3 HUFA had higher feed efficiency (FE) than those fed the other diets. Hepatic and muscular fatty acid profiles reflected that of diets. The content of malondialdehyde (MDA) increased both in the serum and liver of fish fed high n-3 HUFA level diets, and the highest hepatic activity of glutathione peroxidase (GSH-PX) was recorded in fish fed the diet containing 1.29% n-3 HUFA. The expression of acc, g6pd, fas, srebp-1, lpl, atgl, hsl, elovl5 and fads2 was down-regulated in fish fed the diets with high n-3 HUFA levels. However, the expression levels of 6pgd and ppar significantly increased when the dietary contents of n-3 HUFA increased from 0.23% to 1.29% and then decreased when dietary n-3 HUFA levels increased from 1.75% to 2.53%. The highest expression of cpt1a was found in fish fed the diet containing 1.75% n-3 HUFA. The content of cholesterol (CHOL) in serum increased along with n-3 HUFA level. Over all, this study indicated that fish fed moderate dietary n-3 HUFA (1.341.80% n-3 HUFA) could enhance growth, feed utilization and antioxidant capacity. Different dietary levels of n-3 HUFA could strongly affect expression levels of some lipid metabolism relevant genes of the juvenile black seabream. This may contribute to our understanding of the mechanisms related to lipid metabolism (anabolism and catabolism) effects of different dietary levels of n-3 HUFA.
ESTHER : Jin_2017_Aquaculture_471_55
PubMedSearch : Jin_2017_Aquaculture_471_55
Gene_locus related to this paper: acasc-a0a1s5r938

Title : Preparation of Diacylglycerol-enriched Rice Bran Oil by Lipase-catalyzed Deacidification in Packed-bed Reactors by Continuous Dehydration - Lu_2016_J.Oleo.Sci_65_151
Author(s) : Lu Y , Zou X , Han W , Jiang Y , Jin Q , Li L , Xu X , Wang X
Ref : J Oleo Sci , 65 :151 , 2016
Abstract : Diacylglycerol-enriched rice bran oil (RBO-DAG) was produced by deacidification of high-acid rice bran oil (RBO) with glycerol (Gly) using Lipozyme RM IM by continuous dehydration by combination of two enzyme columns (column 1 and 3, used for deacidification) with one molecular sieves column (column 2, used for dehydration). The conditions for three columns were respectively optimized. Response surface methodology (RSM) was used to optimize the conditions of column 1. The content of DAG and conversion of free fatty acid (FFA) were used as indicators and the effects of the enzyme load (8-12 g), flow rate (0.3-0.6 mL/min), substrate molar ratio (4-6) and reaction temperature (55-75 degC) were investigated. The content of DAG and conversion of FFA were significantly correlated to the flow rate and substrate molar ratio. Most desirable conditions of the reaction with respect to the maximal DAG content and FFA conversion was attained under the residence time of 40 min, substrate molar ratio of 5.52 (Gly: RBO) and temperature of 66 degC. The conditions for column 2 were investigated by varying molecular sieves load and flow rate, and the maximal dehydration rate of 85.22% was obtained under the optimal conditions. For column 3, the optimum conditions were obtained as: flow rate, 0.2mL/min; temperature, 65 degC, and the content of DAG and FFA were 38.99% and 3.04%, respectively under these conditions. The catalytic activity of the lipase was stable in twelve continuous operations with 83.22% of its original ability, demonstrating its potential in the continuous packed-bed reactors (PBRs) system. These results showed that packed-bed reactors combined with continuous deacidification and dehydration in one system had great value in industrial production for high-acid RBO with the improved conversion rate.
ESTHER : Lu_2016_J.Oleo.Sci_65_151
PubMedSearch : Lu_2016_J.Oleo.Sci_65_151
PubMedID: 26833284

Title : Species Comparison of Pre-systemic Bioactivation of Vicagrel, a New Acetate Derivative of Clopidogrel - Qiu_2016_Front.Pharmacol_7_366
Author(s) : Qiu ZX , Gao WC , Dai Y , Zhou SF , Zhao J , Lu Y , Chen XJ , Li N
Ref : Front Pharmacol , 7 :366 , 2016
Abstract : Previously we have found vicagrel, a new acetate derivative of clopidogrel, underwent hydrolysis to 2-oxo-clopidogrel and subsequent conversions to its pharmacological active metabolite (AM) and inactive carboxylic acid metabolite (CAM). This study demonstrated the interspecies differences of the vicagrel bioactivation by comparing the critical vicagrel metabolites formation in rats, dogs and human. The pharmacokinetic studies with rats and dogs were conducted after intragastric administration of vicagrel, followed by in vitro metabolism investigation in venous system, intestinal/hepatic microsomes from rats, dogs and human. An obvious disparity was observed in system exposure to AM (99.0 vs. 635.1 microg h/L, p < 0.05) and CAM (10119 vs. 2634 microg h/L, p < 0.05) in rats and dogs. It was shown that the cleavage of vicagrel was almost completed in intestine with great different clearance (53.28 vs. 3.643 L h(-1) kg(-1), p < 0.05) in rats and dogs. With no further hydrolysis to CAM, the greatest clearance of AM (3.26 mL h(-1) kg(-1)) was found in dog intestine. In rat plasma, 2-oxo-clopidogrel was much more extensively hydrolyzed to CAM than in dog and human. Albeit similar hydrolysis clearance and AM production was observed among hepatic microsomes of the three species, the production velocity of CAM ranked highest in dogs (7.55 pmol/min/mg protein). Therefore, the unconformity of AM and CAM exposure cross species mainly came from the metabolism of 2-oxo-clopidogrel associated largely with tissue specificity and interspecies differences of esterases. In human, the pharmacokinetics of vicagrel might be more optimistic due to less inactivation hydrolysis before reaching liver.
ESTHER : Qiu_2016_Front.Pharmacol_7_366
PubMedSearch : Qiu_2016_Front.Pharmacol_7_366
PubMedID: 27774067

Title : Monoacylglycerol lipase inhibitor protects primary cultured neurons against homocysteine-induced impairments in rat caudate nucleus through COX-2 signaling - Dong_2015_Life.Sci_138_64
Author(s) : Dong M , Lu Y , Zou Z , Yang H
Ref : Life Sciences , 138 :64 , 2015
Abstract : AIMS: URB602 is a selective inhibitor of monoacylglycerol lipase (MAGL), a serine hydrolase involved in the biological deactivation of the endocannabinoid 2-arachidonoyl glycerol (2-AG). It has been described that URB602 significantly enhances depolarization-induced increases in 2-AG. A high level of homocysteine (Hcy) is a modifiable risk factor for developing Alzheimer's disease (AD). The aim of this study was to investigate the protective effects of URB602 on Hcy-induced impairments underlying its cellular and molecular mechanism in primary cultured caudate nucleus (CN) neurons. MAIN
METHODS: The expressions of cyclooxygenase-2 (COX-2), ERK1/2, NF-kappaB and IkappaB-alpha as well as cleaved caspase-3 and p-Bcl-2 in Hcy-, URB602 or SR1 (a selective inhibitor of CB1 receptor)-treated primary cultured neurons in CN were measured by immunoblotting technique and neurotoxicity assays were performed by using Hoechst staining. KEY FINDINGS: The MAGL inhibitor URB602 exerted a neuroprotective effect on Hcy-induced impairment through suppression of cyclooxygenase-2 (COX-2) elevation and ERK1/2 and NF-kappaB phosphorylation as well as suppressions of IkappaB-alpha degradation in a CB1 receptor-dependent way. Moreover, anti-neuronal impairments of URB602 were mediated by modulating down-regulation of cleaved caspase-3 expression and up-regulation of p-Bcl-2 expression in a CB1 receptor-dependent manner in primary cultured CN neurons. SIGNIFICANCE: These data suggest that the MAGL inhibitor is a promising therapeutic target for some neurodegenerative disorders, such as AD, via the COX-2 signaling pathway.
ESTHER : Dong_2015_Life.Sci_138_64
PubMedSearch : Dong_2015_Life.Sci_138_64
PubMedID: 25818189

Title : Complete Genome Sequence of Clavibacter michiganensis subsp. insidiosus R1-1 Using PacBio Single-Molecule Real-Time Technology - Lu_2015_Genome.Announc_3_e00396
Author(s) : Lu Y , Samac DA , Glazebrook J , Ishimaru CA
Ref : Genome Announc , 3 : , 2015
Abstract : We report here the complete genome sequence of Clavibacter michiganensis subsp. insidiosus R1-1, isolated in Minnesota, USA. The R1-1 genome, generated by a de novo assembly of PacBio sequencing data, is the first complete genome sequence available for this subspecies.
ESTHER : Lu_2015_Genome.Announc_3_e00396
PubMedSearch : Lu_2015_Genome.Announc_3_e00396
PubMedID: 25953184
Gene_locus related to this paper: 9mico-a0a0d5cf45 , 9mico-a0a0d5cfx6

Title : Improving vagal activity ameliorates cardiac fibrosis induced by angiotensin II: in vivo and in vitro - Liu_2015_Sci.Rep_5_17108
Author(s) : Liu JJ , Huang N , Lu Y , Zhao M , Yu XJ , Yang Y , Yang YH , Zang WJ
Ref : Sci Rep , 5 :17108 , 2015
Abstract : Cardiac remodeling is characterized by overactivity of the renin-angiotensin system (RAS) and withdrawal of vagal activity. We hypothesized that improving vagal activity could attenuate cardiac fibrosis induced by angiotensin II (Ang II) in vivo and in vitro. Rats were subjected to abdominal aorta constriction (AAC) with or without pyridostigmine (PYR) (31 mg/kg/d). After 8 weeks, PYR significantly decreased Ang II level, AT1 protein expression, and collagen deposition in cardiac tissue and improved heart rate variability, baroreflex sensitivity and cardiac function, which were abolished by atropine. In vitro, treatment of cardiac fibroblasts (CFs) with Ang II (10(-7) M) increased cell proliferation, migration, transformation, and secretory properties, which were significantly diminished by acetylcholine (ACh, 10(-6) M). Subsequently, Ang II significantly increased collagen type I expression as well as metalloproteinase (MMP)-2 expression and activity. Transforming growth factor (TGF)-beta1 expression and Smad3 phosphorylation presented a similar trend. Notably, the knockdown of the acetylcholine M2 receptor by siRNA could abolish ACh anti-fibrotic action. These data implicated cholinesterase inhibitor can increase vagal activity and reduce local Ang II level, and ACh inhibit Ang II pro-fibrotic effects. Our findings suggested that the parasympathetic nervous system can serve as a promising target for cardiac remodeling treatment.
ESTHER : Liu_2015_Sci.Rep_5_17108
PubMedSearch : Liu_2015_Sci.Rep_5_17108
PubMedID: 26596640

Title : Identification of tanshinone IIA as a natural monoacylglycerol lipase inhibitor by combined in silico and in vitro approach - Yang_2014_Med.Chem.Commun_5_1528
Author(s) : Yang R , Lu Y , Liu J
Ref : Med Chem Commun , 5 :1528 , 2014
Abstract : Monoacylglycerol lipase (MAGL) was proposed as a novel target for the treatment of Alzheimer's disease (AD). In this paper, in silico screening of a focused library was implemented to dock natural products against MAGL to evaluate the calculated binding affinities of ligands with the receptor. Five hits were experimentally tested to determine their inhibitory effects on MAGL in vitro. Finally, tanshinone IIA (1) was successfully identified as a natural MAGL inhibitor in a concentration dependent manner with an IC50 value of 48 M. Considering being used as long-term treatment of cardiovascular diseases in China, tanshinone IIA has the potential to be developed as a good candidate for the treatment of AD and other MAGL-associated diseases.
ESTHER : Yang_2014_Med.Chem.Commun_5_1528
PubMedSearch : Yang_2014_Med.Chem.Commun_5_1528

Title : Meserine, a Novel Carbamate AChE Inhibitor, Ameliorates Scopolamine-Induced Dementia and Alleviates Amyloidogenesis of APP\/PS1 Transgenic Mice - Shao_2014_CNS.Neurosci.Ther_20_165
Author(s) : Shao BY , Xia Z , Xie Q , Ge XX , Zhang WW , Sun J , Jiang P , Wang H , Le WD , Qiu ZB , Lu Y , Chen HZ
Ref : CNS Neurosci Ther , 20 :165 , 2014
Abstract : AIMS: To investigate whether Meserine, a novel phenylcarbamate derivative of (-)-meptazinol, possesses beneficial activities against cholinergic deficiency and amyloidogenesis, the two major pathological characteristics of Alzheimer's disease (AD).
METHODS: Ellman's assay and Morris water maze were used to detect acetylcholinesterase (AChE) activity and evaluate spatial learning and memory ability, respectively. Both high content screening and Western blotting were carried out to detect beta-amyloid precursor protein (APP), while RT-PCR and ELISA were conducted to detect APP-mRNA and beta-amyloid peptide (Abeta).
RESULTS: In scopolamine-induced dementia mice, Meserine (1 mg/kg, i.p.) significantly ameliorated spatial learning and memory deficits, which was consistent with its in vitro inhibitory ability against AChE (recombinant human AChE, IC50 = 274 +/- 49 nM). Furthermore, Meserine (7.5 mg/kg) injected intraperitoneally once daily for 3 weeks lowered APP level by 28% and Abeta42 level by 42% in APP/PS1 transgenic mouse cerebrum. This APP modulation action might be posttranscriptional, as Meserine reduced APP by about 30% in SH-SY5Y-APP695 cells but did not alter APP-mRNA level. And both APP and Abeta42 lowering action of Meserine maintained longer than that of rivastigmine. CONCLUSION: Meserine executes dual actions against cholinergic deficiency and amyloidogenesis and provides a promising lead compound for symptomatic and modifying therapy of AD.
ESTHER : Shao_2014_CNS.Neurosci.Ther_20_165
PubMedSearch : Shao_2014_CNS.Neurosci.Ther_20_165
PubMedID: 24279603

Title : Draft Genome Sequence of the Bioelectricity-Generating and Dye-Decolorizing Bacterium Proteus hauseri Strain ZMd44 - Wang_2014_Genome.Announc_2_e00992
Author(s) : Wang N , Ng IS , Chen PT , Li Y , Chen YC , Chen BY , Lu Y
Ref : Genome Announc , 2 :e00992 , 2014
Abstract : Proteus hauseri ZMd44 (CGMCC 6746), as a crucial biodecolorizing, bioelectricity-generating, and copper-resistant bacterium, is distinguished from the urinary pathogens Proteus penneri and Proteus mirabilis. To further investigate the genetic functions of this strain, the genome sequence and annotation of its open reading frames, which consist of 3,875,927 bp (G+C content, 38.12%), are presented here.
ESTHER : Wang_2014_Genome.Announc_2_e00992
PubMedSearch : Wang_2014_Genome.Announc_2_e00992
PubMedID: 24435854
Gene_locus related to this paper: prohu-v6mis5 , 9entr-c0b0y7

Title : Plant genetics. Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome - Chalhoub_2014_Science_345_950
Author(s) : Chalhoub B , Denoeud F , Liu S , Parkin IA , Tang H , Wang X , Chiquet J , Belcram H , Tong C , Samans B , Correa M , Da Silva C , Just J , Falentin C , Koh CS , Le Clainche I , Bernard M , Bento P , Noel B , Labadie K , Alberti A , Charles M , Arnaud D , Guo H , Daviaud C , Alamery S , Jabbari K , Zhao M , Edger PP , Chelaifa H , Tack D , Lassalle G , Mestiri I , Schnel N , Le Paslier MC , Fan G , Renault V , Bayer PE , Golicz AA , Manoli S , Lee TH , Thi VH , Chalabi S , Hu Q , Fan C , Tollenaere R , Lu Y , Battail C , Shen J , Sidebottom CH , Canaguier A , Chauveau A , Berard A , Deniot G , Guan M , Liu Z , Sun F , Lim YP , Lyons E , Town CD , Bancroft I , Meng J , Ma J , Pires JC , King GJ , Brunel D , Delourme R , Renard M , Aury JM , Adams KL , Batley J , Snowdon RJ , Tost J , Edwards D , Zhou Y , Hua W , Sharpe AG , Paterson AH , Guan C , Wincker P
Ref : Science , 345 :950 , 2014
Abstract : Oilseed rape (Brassica napus L.) was formed ~7500 years ago by hybridization between B. rapa and B. oleracea, followed by chromosome doubling, a process known as allopolyploidy. Together with more ancient polyploidizations, this conferred an aggregate 72x genome multiplication since the origin of angiosperms and high gene content. We examined the B. napus genome and the consequences of its recent duplication. The constituent An and Cn subgenomes are engaged in subtle structural, functional, and epigenetic cross-talk, with abundant homeologous exchanges. Incipient gene loss and expression divergence have begun. Selection in B. napus oilseed types has accelerated the loss of glucosinolate genes, while preserving expansion of oil biosynthesis genes. These processes provide insights into allopolyploid evolution and its relationship with crop domestication and improvement.
ESTHER : Chalhoub_2014_Science_345_950
PubMedSearch : Chalhoub_2014_Science_345_950
PubMedID: 25146293
Gene_locus related to this paper: braol-Q8GTM3 , braol-Q8GTM4 , brana-a0a078j4a9 , brana-a0a078e1m0 , brana-a0a078cd75 , brana-a0a078evd3 , brana-a0a078j4f0 , brana-a0a078cta5 , brana-a0a078cus4 , brana-a0a078f8c2 , brana-a0a078jql1 , brana-a0a078dgj3 , brana-a0a078hw50 , brana-a0a078cuu0 , brana-a0a078iyl8 , brana-a0a078dfa9 , brana-a0a078ic91 , brana-a0a078cnf7 , brana-a0a078fh41 , brana-a0a078ca65 , brana-a0a078ctc8 , brana-a0a078h021 , brana-a0a078h0h8 , brana-a0a078jx23 , brana-a0a078ci96 , brana-a0a078cqd7 , brana-a0a078dh94 , brana-a0a078h612 , brana-a0a078ild2 , brana-a0a078j2t3 , braol-a0a0d3dpb2 , braol-a0a0d3dx76 , brana-a0a078jxa8 , brana-a0a078i2k3 , braol-a0a0d3ef55 , brarp-m4dcj8 , brana-a0a078fw53 , brana-a0a078itf3 , brana-a0a078jsn1 , brana-a0a078jrt9 , brana-a0a078i6d2 , brana-a0a078jku0 , brana-a0a078fss7 , brana-a0a078i1l0 , brana-a0a078i402

Title : Pyridostigmine prevents peripheral vascular endothelial dysfunction in rats with myocardial infarction - Qin_2014_Clin.Exp.Pharmacol.Physiol_41_202
Author(s) : Qin F , Lu Y , He X , Zhao M , Bi X , Yu X , Liu J , Zang W
Ref : Clinical & Experimental Pharmacology & Physiology , 41 :202 , 2014
Abstract : Myocardial infarction (MI) is characterized by the withdrawal of vagal activity and increased sympathetic activity. We have shown previously that pyridostigmine (PYR), an acetylcholinesterase inhibitor, was able to improve vagal activity and ameliorate cardiac dysfunction following MI. However, the effect of PYR on endothelial dysfunction in peripheral arteries after MI remains unclear. In the present study, MI was induced by coronary artery ligation in adult Sprague-Dawley rats. Rats were treated intragastrically with saline or PYR (approximately 31 mg/kg per day) for 2 weeks, at which time haemodynamic and parasympathetic parameters and the vascular reactivity of isolated mesenteric arteries were measured and the ultrastructure of the endothelium evaluated. Compared with the MI group, PYR not only improved cardiac function, vagal nerve activity and endothelial impairment, but also reduced intravascular superoxide anion and malondialdehyde. In addition, in the PYR-treated MI group, nitric oxide (NO) bioavailability was increased and attenuated endothelium-dependent relaxations were improved, whereas restored vasodilator responses were inhibited by N(G) -nitro-l-arginine methyl ester. Based on our results, PYR is able to attenuate the impairment of peripheral endothelial function and maintain endothelial ultrastructural integrity in MI rats by inhibiting reactive oxygen species production, enhancing NO bioavailability and improving vagal activity.
ESTHER : Qin_2014_Clin.Exp.Pharmacol.Physiol_41_202
PubMedSearch : Qin_2014_Clin.Exp.Pharmacol.Physiol_41_202
PubMedID: 24471445

Title : Strategies for prevention of postoperative delirium: a systematic review and meta-analysis of randomized trials - Zhang_2013_Crit.Care_17_R47
Author(s) : Zhang H , Lu Y , Liu M , Zou Z , Wang L , Xu FY , Shi XY
Ref : Crit Care , 17 :R47 , 2013
Abstract : INTRODUCTION: The ideal measures to prevent postoperative delirium remain unestablished. We conducted this systematic review and meta-analysis to clarify the significance of potential interventions.
METHODS: The PRISMA statement guidelines were followed. Two researchers searched MEDLINE, EMBASE, CINAHL and Cochrane Library for articles published in English before August 2012. Additional sources included reference lists from reviews and related articles from "Google Scholar". Randomized clinical trials (RCTs) on interventions seeking to prevent postoperative delirium in adult patients were included. Data extraction and methodological quality assessment were performed using predefined data fields and scoring system. Meta-analysis was accomplished for studies that used similar strategies. The primary outcome measure was the incidence of postoperative delirium. We further tested whether interventions effective in preventing postoperative delirium shortened the length of hospital stay.
RESULTS: We identified 38 RCTs with interventions ranging from perioperative managements to pharmacological, psychological or multicomponent interventions. Meta-analysis showed dexmedetomidine sedation was associated with less delirium compared to sedation produced by other drugs (2 RCTs with 415 patients, pooled risk ratio (RR) = 0.39; 95% confidence interval (CI) = 0.16-0.95). Both typical (3 RCTs with 965 patients, RR = 0.71; 95% CI = 0.54-0.93) and atypical antipsychotics (3 RCTs with 627 patients, RR = 0.36; 95% CI = 0.26-0.50) decreased delirium occurrence when compared to placebos. Multicomponent interventions (2 RCTs with 325 patients, RR = 0.71; 95% CI = 0.58-0.86) were effective in preventing delirium. No difference in the incidences of delirium was found between: neuraxial and general anesthesia (4 RCTs with 511 patients, RR = 0.99; 95% CI = 0.65-1.50); epidural and intravenous analgesia (3 RCTs with 167 patients, RR = 0.93; 95% CI = 0.61-1.43) or acetylcholinesterase inhibitors and placebo (4 RCTs with 242 patients, RR = 0.95; 95% CI = 0.63-1.44). Effective prevention of postoperative delirium did not shorten the length of hospital stay (10 RCTs with 1636 patients, pooled SMD (standard mean difference) = -0.06; 95% CI = -0.16-0.04).
CONCLUSIONS: The included studies showed great inconsistencies in denition, incidence, severity and duration of postoperative delirium. Meta-analysis supported dexmedetomidine sedation, multicomponent interventions and antipsychotics were useful in preventing postoperative delirium.
ESTHER : Zhang_2013_Crit.Care_17_R47
PubMedSearch : Zhang_2013_Crit.Care_17_R47
PubMedID: 23506796

Title : Droplet-based microfluidics for dose-response assay of enzyme inhibitors by electrochemical method - Gu_2013_Anal.Chim.Acta_796_68
Author(s) : Gu S , Lu Y , Ding Y , Li L , Zhang F , Wu Q
Ref : Anal Chim Acta , 796 :68 , 2013
Abstract : A simple but robust droplet-based microfluidic system was developed for dose-response enzyme inhibition assay by combining concentration gradient generation method with electrochemical detection method. A slotted-vials array and a tapered tip capillary were used for reagents introduction and concentration gradient generation, and a polydimethylsiloxane (PDMS) microfluidic chip integrated with microelectrodes was used for droplet generation and electrochemical detection. Effects of oil flow rate and surfactant on electrochemical sensing were investigated. This system was validated by measuring dose-response curves of three types of acetylcholinesterase (AChE) inhibitors, including carbamate pesticide, organophosphorus pesticide, and therapeutic drugs regulating Alzheimer's disease. Carbaryl, chlorpyrifos, and tacrine were used as model analytes, respectively, and their IC50 (half maximal inhibitory concentration) values were determined. A whole enzyme inhibition assay was completed in 6min, and the total consumption of reagents was less than 5muL. This microfluidic system is applicable to many biochemical reactions, such as drug screening and kinetic studies, as long as one of the reactants or products is electrochemically active.
ESTHER : Gu_2013_Anal.Chim.Acta_796_68
PubMedSearch : Gu_2013_Anal.Chim.Acta_796_68
PubMedID: 24016585

Title : Association of NDRG1 gene promoter methylation with reduced NDRG1 expression in gastric cancer cells and tissue specimens - Chang_2013_Cell.Biochem.Biophys_66_93
Author(s) : Chang X , Zhang S , Ma J , Li Z , Zhi Y , Chen J , Lu Y , Dai D
Ref : Cell Biochem Biophys , 66 :93 , 2013
Abstract : NDRG1 (N-myc downstream-regulated gene 1) plays a role in cell differentiation and suppression of tumor metastasis. This study aims to determine the expression of NDRG1 mRNA and protein in gastric cancer cell lines and tissue specimens and then assess the possible cause of its aberrant expression. Six gastric cancer cell lines and 20 pairs of normal and gastric cancer tissue samples were used to assess NDRG1 expression using Real-time PCR and Western blot. High-resolution melting analysis (HRM) and methylation-specific PCR (MSP) were performed to detect gene mutation and methylation, respectively, in cell lines and tissues samples. Expression of NDRG1 mRNA and protein was downregulated in gastric cancer cell lines and tissues. Specifically, expression of NDRG1 mRNA and protein was lower in all six gastric cancer cell lines than that of normal gastric cells, while 15 out of 20 cases of gastric cancer tissues had the reduced levels of NDRG1 mRNA and protein. HRM data showed that there was no mutation in NDRG1 gene, but MSP data showed high levels of NDRG1 gene promoter methylation in the CpG islands in both cell lines and tissue samples. Moreover, treatment with the DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine upregulated NDRG1 expression in gastric cancer HGC27 cells, but not in the histone deacetylase inhibitor trichostatin A-treated HGC27 cells. In conclusion, this study has shown that expression of NDRG1 mRNA and protein was reduced in gastric cancer cell lines and tissues, which is due to methylation of NDRG1 gene promoter. Further study will unearth the clinical significance of the reduced NDRG1 protein in gastric cancer.
ESTHER : Chang_2013_Cell.Biochem.Biophys_66_93
PubMedSearch : Chang_2013_Cell.Biochem.Biophys_66_93
PubMedID: 23099645

Title : Asperterpenols A and B, New Sesterterpenoids Isolated from a Mangrove Endophytic Fungus Aspergillus sp. 085242 - Xiao_2013_Org.Lett_15_2522
Author(s) : Xiao Z , Huang H , Shao C , Xia X , Ma L , Huang X , Lu Y , Lin Y , Long Y , She Z
Ref : Org Lett , 15 :2522 , 2013
Abstract : Asperterpenol A (1) and asperterpenol B (2), two novel sesterterpenoids with an unusual 5/8/6/6 tetracyclic ring skeleton, were isolated from a mangrove endophytic fungus Aspergillus sp. 085242. The structures were elucidated on the basis of spectroscopic methods and the absolute configurations determined by single-crystal X-ray diffraction analysis. Compounds 1 and 2 inhibit acetylcholinesterase with IC50 values of 2.3 and 3.0 muM, respectively.
ESTHER : Xiao_2013_Org.Lett_15_2522
PubMedSearch : Xiao_2013_Org.Lett_15_2522
PubMedID: 23642191

Title : [Progress in the structure and function of human carboxylesterase 1] - Tong_2012_Sheng.Wu.Gong.Cheng.Xue.Bao_28_1414
Author(s) : Tong J , Yi Y , Cao P , Liu C , Wang L , Lu Y
Ref : Sheng Wu Gong Cheng Xue Bao , 28 :1414 , 2012
Abstract : Human carboxylesterase 1 (HCE1), belonging to a multigene serine hydrolase family, is a major liver carboxylesterase responsible for the hydrolysis and metabolism of various xenobiotics. It also plays an important role in the transportation and metabolism of endogenous cholesterol ester and free fatty acid, and is closely associated with the pathogenesis of hepatocellular carcinoma. This review describes current developments in the molecular structure, the roles in drug, toxins and lipid metabolism, and the early diagnosis for hepatocellular carcinoma of human carboxylesterase 1.
ESTHER : Tong_2012_Sheng.Wu.Gong.Cheng.Xue.Bao_28_1414
PubMedSearch : Tong_2012_Sheng.Wu.Gong.Cheng.Xue.Bao_28_1414
PubMedID: 23593865

Title : Genome organization, phylogenies, expression patterns, and three-dimensional protein models of two acetylcholinesterase genes from the red flour beetle - Lu_2012_PLoS.One_7_e32288
Author(s) : Lu Y , Pang YP , Park Y , Gao X , Yao J , Zhang X , Zhu KY
Ref : PLoS ONE , 7 :e32288 , 2012
Abstract : Since the report of a paralogous acetylcholinesterase (AChE, EC3.1.1.7) gene in the greenbug (Schizaphis graminum) in 2002, two different AChE genes (Ace1 and Ace2) have been identified in each of at least 27 insect species. However, the gene models of Ace1 and Ace2, and their molecular properties have not yet been comprehensively analyzed in any insect species. In this study, we sequenced the full-length cDNAs, computationally predicted the corresponding three-dimensional protein models, and profiled developmental stage and tissue-specific expression patterns of two Ace genes from the red flour beetle (Tribolium castaneum; TcAce1 and TcAce2), a globally distributed major pest of stored grain products and an emerging model organism. TcAce1 and TcAce2 encode 648 and 604 amino acid residues, respectively, and have conserved motifs including a choline-binding site, a catalytic triad, and an acyl pocket. Phylogenetic analysis show that both TcAce genes are grouped into two insect Ace clusters and TcAce1 is completely diverged from TcAce2, suggesting that these two genes evolve from their corresponding Ace gene lineages in insect species. In addition, TcAce1 is located on chromosome 5, whereas TcAce2 is located on chromosome 2. Reverse transcription polymerase chain reaction (PCR) and quantitative real-time PCR analyses indicate that both genes are virtually transcribed in all the developmental stages and predominately expressed in the insect brain. Our computational analyses suggest that the TcAce1 protein is a robust acetylcholine (ACh) hydrolase and has susceptibility to sulfhydryl agents whereas the TcAce2 protein is not a catalytically efficient ACh hydrolase.
ESTHER : Lu_2012_PLoS.One_7_e32288
PubMedSearch : Lu_2012_PLoS.One_7_e32288
PubMedID: 22359679

Title : Cholinergic and non-cholinergic functions of two acetylcholinesterase genes revealed by gene-silencing in Tribolium castaneum - Lu_2012_Sci.Rep_2_288
Author(s) : Lu Y , Park Y , Gao X , Zhang X , Yao J , Pang YP , Jiang H , Zhu KY
Ref : Sci Rep , 2 :288 , 2012
Abstract : We compared biological functions of two acetylcholinesterase genes (TcAce1 and TcAce2) in Tribolium castaneum, a globally distributed major pest of stored grain products and an emerging model organism, by using RNA interference. Although both genes expressed at all developmental stages and mainly in the brain, the transcript level of TcAce1 was 1.2- to 8.7-fold higher than that of TcAce2, depending on developmental stages. Silencing TcAce1 in 20-day larvae led to 100% mortality within two weeks after eclosion and increased larval susceptibilities to anticholinesterase insecticides. In contrast, silencing TcAce2 did not show insect mortality and significantly affect insecticide susceptibility, but delayed insect development and reduced female egg-laying and egg hatching. These results demonstrate for the first time that TcAce1 plays a major role in cholinergic functions and is the target of anticholinesterase insecticides, whereas TcAce2 plays an important, non-cholinergic role in female reproduction, embryo development, and growth of offspring.
ESTHER : Lu_2012_Sci.Rep_2_288
PubMedSearch : Lu_2012_Sci.Rep_2_288
PubMedID: 22371826

Title : Immobilization of Candida rugosa lipase on hydrophobic\/strong cation-exchange functional silica particles for biocatalytic synthesis of phytosterol esters - Zheng_2012_Bioresour.Technol_115_141
Author(s) : Zheng MM , Lu Y , Dong L , Guo PM , Deng QC , Li WL , Feng YQ , Huang FH
Ref : Bioresour Technol , 115 :141 , 2012
Abstract : In this work, mixed-mode silica particles functionalized with octyl and sulfonic acid groups was conveniently prepared by co-bonding a mixture of n-octyltriethoxysilane and 3-mercaptopropyltriethoxysilane and then oxidized with hydrogen peroxide. Candida rugosa lipase (CRL) was immobilized on the mixed-mode silica particles via hydrophobic and strong cation-exchange interaction. The resulting immobilized CRL increased remarkably its stability at high temperature in comparison to free CRL. The immobilized CRL was used as biocatalysts for enzymatic esterification of phytosterols with free fatty acids (FFAs) to produce phytosterol esters. The phytosterols linolenate esterification degree of 95.3% was obtained under the optimized condition. Phytosterols esters could also been converted in high yields to the corresponding long-chain acyl esters via transesterification with methyl esters of fatty acids (80.5%) or triacylglycerols (above 95.5%) using mixed-mode silica particles immobilized CRL as biocatalyst. Furthermore, the immobilized CRL by absorption retained 78.6% of their initial activity after 7 recycles.
ESTHER : Zheng_2012_Bioresour.Technol_115_141
PubMedSearch : Zheng_2012_Bioresour.Technol_115_141
PubMedID: 22209442

Title : Distinct roles of muscle and motoneuron LRP4 in neuromuscular junction formation - Wu_2012_Neuron_75_94
Author(s) : Wu H , Lu Y , Shen C , Patel N , Gan L , Xiong WC , Mei L
Ref : Neuron , 75 :94 , 2012
Abstract : Neuromuscular junction (NMJ) formation requires precise interaction between motoneurons and muscle fibers. LRP4 is a receptor of agrin that is thought to act in cis to stimulate MuSK in muscle fibers for postsynaptic differentiation. Here we dissected the roles of LRP4 in muscle fibers and motoneurons in NMJ formation by cell-specific mutation. Studies of muscle-specific mutants suggest that LRP4 is involved in deciding where to form AChR clusters in muscle fibers, postsynaptic differentiation, and axon terminal development. LRP4 in HEK293 cells increased synapsin or SV2 puncta in contacting axons of cocultured neurons, suggesting a synaptogenic function. Analysis of LRP4 muscle and motoneuron double mutants and mechanistic studies suggest that NMJ formation may also be regulated by LRP4 in motoneurons, which could serve as agrin's receptor in trans to induce AChR clusters. These observations uncovered distinct roles of LRP4 in motoneurons and muscles in NMJ development.
ESTHER : Wu_2012_Neuron_75_94
PubMedSearch : Wu_2012_Neuron_75_94
PubMedID: 22794264

Title : A GATA transcription factor recruits Hda1 in response to reduced Tor1 signaling to establish a hyphal chromatin state in Candida albicans - Lu_2012_PLoS.Pathog_8_e1002663
Author(s) : Lu Y , Su C , Liu H
Ref : PLoS Pathog , 8 :e1002663 , 2012
Abstract : Candida albicans is an important opportunistic fungal pathogen of immunocompromised individuals. One critical virulence attribute is its morphogenetic plasticity. Hyphal development requires two temporally linked changes in promoter chromatin, which is sequentially regulated by temporarily clearing the transcription inhibitor Nrg1 upon activation of the cAMP/PKA pathway and promoter recruitment of the histone deacetylase Hda1 under reduced Tor1 signaling. Molecular mechanisms for the temporal connection and the link to Tor1 signaling are not clear. Here, through a forward genetic screen, we report the identification of the GATA family transcription factor Brg1 as the factor that recruits Hda1 to promoters of hypha-specific genes during hyphal elongation. BRG1 expression requires both the removal of Nrg1 and a sub-growth inhibitory level of rapamycin; therefore, it is a sensitive readout of Tor1 signaling. Interestingly, promoters of hypha-specific genes are not accessible to Brg1 in yeast cells. Furthermore, ectopic expression of Brg1 cannot induce hyphae, but can sustain hyphal development. Nucleosome mapping of a hypha-specific promoter shows that Nrg1 binding sites are in nucleosome free regions in yeast cells, whereas Brg1 binding sites are occupied by nucleosomes. Nucleosome disassembly during hyphal initiation exposes the binding sites for both regulators. During hyphal elongation, Brg1-mediated Hda1 recruitment causes nucleosome repositioning and occlusion of Nrg1 binding sites. We suggest that nucleosome repositioning is the underlying mechanism for the yeast-hyphal transition. The hypha-specific regulator Ume6 is a key downstream target of Brg1 and functions after Brg1 as a built-in positive feedback regulator of the hyphal transcriptional program to sustain hyphal development. With the levels of Nrg1 and Brg1 dynamically and sensitively controlled by the two major cellular growth pathways, temporal changes in nucleosome positioning during the yeast-to-hypha transition provide a mechanism for signal integration and cell fate specification. This mechanism is likely used broadly in development.
ESTHER : Lu_2012_PLoS.Pathog_8_e1002663
PubMedSearch : Lu_2012_PLoS.Pathog_8_e1002663
PubMedID: 22536157
Gene_locus related to this paper: canal-hda1

Title : Neurexin-neuroligin transsynaptic interaction mediates learning-related synaptic remodeling and long-term facilitation in aplysia - Choi_2011_Neuron_70_468
Author(s) : Choi YB , Li HL , Kassabov SR , Jin I , Puthanveettil SV , Karl KA , Lu Y , Kim JH , Bailey CH , Kandel ER
Ref : Neuron , 70 :468 , 2011
Abstract : Neurexin and neuroligin, which undergo heterophilic interactions with each other at the synapse, are mutated in some patients with autism spectrum disorder, a set of disorders characterized by deficits in social and emotional learning. We have explored the role of neurexin and neuroligin at sensory-to-motor neuron synapses of the gill-withdrawal reflex in Aplysia, which undergoes sensitization, a simple form of learned fear. We find that depleting neurexin in the presynaptic sensory neuron or neuroligin in the postsynaptic motor neuron abolishes both long-term facilitation and the associated presynaptic growth induced by repeated pulses of serotonin. Moreover, introduction into the motor neuron of the R451C mutation of neuroligin-3 linked to autism spectrum disorder blocks both intermediate-term and long-term facilitation. Our results suggest that activity-dependent regulation of the neurexin-neuroligin interaction may govern transsynaptic signaling required for the storage of long-term memory, including emotional memory that may be impaired in autism spectrum disorder.
ESTHER : Choi_2011_Neuron_70_468
PubMedSearch : Choi_2011_Neuron_70_468
PubMedID: 21555073

Title : Brominated aliphatic hydrocarbons and sterols from the sponge Xestospongia testudinaria with their bioactivities - Zhou_2011_Chem.Phys.Lipids_164_703
Author(s) : Zhou X , Lu Y , Lin X , Yang B , Yang X , Liu Y
Ref : Chemistry & Physic of Lipids , 164 :703 , 2011
Abstract : Four brominated aliphatic hydrocarbons (1-4), including a novel brominated ene-tetrahydrofuran named as mutafuran H (1), and five sterols (5-9) were isolated from the South China Sea sponge Xestospongia testudinaria. The structure of 1 was determined on the basis of NMR ((1)H, (13)C NMR, HSQC, HMBC, (1)H-(1)H COSY, and NOESY), MS, and optical rotation analysis. Known compounds were identified by comparison of their NMR data with those reported in the literature. Compounds 1-4, and 6-9 were evaluated for their toxicity against Artemia salina larvae, and anti-acetylcholinesterase activity.
ESTHER : Zhou_2011_Chem.Phys.Lipids_164_703
PubMedSearch : Zhou_2011_Chem.Phys.Lipids_164_703
PubMedID: 21864515

Title : Azaphilones and p-terphenyls from the mangrove endophytic fungus Penicillium chermesinum (ZH4-E2) isolated from the South China Sea - Huang_2011_J.Nat.Prod_74_997
Author(s) : Huang H , Feng X , Xiao Z , Liu L , Li H , Ma L , Lu Y , Ju J , She Z , Lin Y
Ref : Journal of Natural Products , 74 :997 , 2011
Abstract : Eight secondary metabolites, including three new azaphilones (chermesinones A-C, 1-3), three new p-terphenyls (6'-O-desmethylterphenyllin, 4; 3-hydroxy-6'-O-desmethylterphenyllin, 5; 3''-deoxy-6'-O-desmethylcandidusin B, 7), and two known p-terphenyls (6, 8), were isolated from the culture of the mangrove endophytic fungus Penicillium chermesinum (ZH4-E2). Their structures were established by spectroscopic analysis. The absolute configuration of 1 was determined by X-ray crystallography. Terphenyls 4, 5, and 6 exhibited strong inhibitory effects against alpha-glucosidase with IC50 values of 0.9, 4.9, and 2.5 muM, respectively. Terphenyls 7 and 8 showed inhibitory activity toward acetylcholinesterase with IC50 values of 7.8 and 5.2 muM.
ESTHER : Huang_2011_J.Nat.Prod_74_997
PubMedSearch : Huang_2011_J.Nat.Prod_74_997
PubMedID: 21510637

Title : Contribution of carboxylesterase in hamster to the intestinal first-pass loss and low bioavailability of ethyl piperate, an effective lipid-lowering drug candidate - Lu_2011_Drug.Metab.Dispos_39_796
Author(s) : Lu Y , Bao N , Borjihan G , Ma Y , Hu M , Yu C , Li S , Jia J , Yang D , Wang Y
Ref : Drug Metabolism & Disposition: The Biological Fate of Chemicals , 39 :796 , 2011
Abstract : Ethyl piperate is an effective lipid-lowering drug candidate synthesized from piperine. However, its pharmacokinetic characteristics and oral absorption process remain unclear. A liquid chromatography-tandem mass spectrometry method was applied to determine the oral bioavailability of ethyl piperate. Simulated gastrointestinal pH conditions and intestinal washings were prepared to investigate their contributions to the loss of ethyl piperate. Hydrolysis by carboxylesterase (CES) was evaluated in vitro using microsomes and S9 fractions. In situ intestinal single-pass perfusion experiments were performed to estimate the role of CES in ethyl piperate absorption. The bioavailability of ethyl piperate was extremely low (0.47%) in hamster independent of gastrointestinal environmental effects. Ethyl piperate was a typical substrate of CES with kinetic parameters K(m) and V(max) of 7.56 +/- 1.491 muM and 0.16 +/- 0.008 nmol . min(-1) . mg protein(-1), respectively. CES was responsible for 85.8% of the intestinal hydrolysis of ethyl piperate. Specific inhibition of CES with bis-p-nitrophenyl phosphate (BNPP), decreased degradation clearance to 36% of control with no significant change in absorption clearance. This contrasted with the results of Caco-2 monolayer experiments, which showed a dramatic increase in the apparent permeability coefficient after BNPP treatment. mRNA levels for the CES isozyme, CES2A3, were similar among the three regions of hamster intestine and 60% less than those in liver; CES1B1 mRNA levels were even lower in the intestine and showed a proximal-to-distal decrease. In conclusion, CES markedly contributes to intestinal first-pass hydrolysis of ethyl piperate that is sufficient, but not necessary, to cause the observed extremely low bioavailability.
ESTHER : Lu_2011_Drug.Metab.Dispos_39_796
PubMedSearch : Lu_2011_Drug.Metab.Dispos_39_796
PubMedID: 21346005

Title : Complete genome sequence of Lactococcus lactis subsp. lactis CV56, a probiotic strain isolated from the vaginas of healthy women - Gao_2011_J.Bacteriol_193_2886
Author(s) : Gao Y , Lu Y , Teng KL , Chen ML , Zheng HJ , Zhu YQ , Zhong J
Ref : Journal of Bacteriology , 193 :2886 , 2011
Abstract : Lactic acid bacteria that exist in the urinogenital system play an important role in maintaining the health of the host. Here, we report the finished and annotated genome of a Lactococcus strain that was isolated from the vaginas of healthy women and shows probiotic properties, including nisin A production and adhesion to vaginal epithelial cells.
ESTHER : Gao_2011_J.Bacteriol_193_2886
PubMedSearch : Gao_2011_J.Bacteriol_193_2886
PubMedID: 21460077
Gene_locus related to this paper: lacla-menX , lacla-YQAG , lacla-YUFC

Title : Superoxide dismutase, catalase and acetylcholinesterase: biomarkers for the joint effects of cadmium, zinc and methyl parathion contamination in water - Ling_2011_Environ.Technol_32_1463
Author(s) : Ling X , Zhang Y , Lu Y , Huang H
Ref : Environ Technol , 32 :1463 , 2011
Abstract : Heavy metals are known to reduce the activities of antioxidant enzymes (e.g. superoxide dismutase, catalase), while organophosphorous insecticides are known to inhibit the activity of the enzyme acetylcholinesterase. In this study, the activities of these three enzymes in zebrafish (Danio rerio) tissues were assessed to evaluate the consequences heavy metal and organophosphate contamination in aquatic systems. When the fish were contacted with water containing a single pollutant, superoxide dismutase activity was affected by the presence of Cd but not by methyl parathion or Zn. However, catalase and acetylcholinesterase activities were sensitive to all three pollutants. The combined treatment showed that the three enzymes could be chosen as biomarkers of joint pollution by both metals and organophosphate. Toxicity tests showed an antagonism interaction between methyl parathion and Cd or Zn, and the change of enzyme activities at 96 hours was in accordance with that.
ESTHER : Ling_2011_Environ.Technol_32_1463
PubMedSearch : Ling_2011_Environ.Technol_32_1463
PubMedID: 22329136

Title : Overexpression and characterization in Bacillus subtilis of a positionally nonspecific lipase from Proteus vulgaris - Lu_2010_J.Ind.Microbiol.Biotechnol_37_919
Author(s) : Lu Y , Lin Q , Wang J , Wu Y , Bao W , Lv F , Lu Z
Ref : J Ind Microbiol Biotechnol , 37 :919 , 2010
Abstract : A Proteus vulgaris strain named T6 which produced lipase (PVL) with nonpositional specificity had been isolated in our laboratory. To produce the lipase in large quantities, we cloned its gene, which had an opening reading frame of 864 base pairs and encoded a deduced 287-amino-acid protein. The PVL gene was inserted into the Escherichia coli expression vector pET-DsbA, and active lipase was expressed in E. coli BL21 cells. The secretive expression of PVL gene in Bacillus subtilis was examined. Three vectors, i.e., pMM1525 (xylose-inducible), pMMP43 (constitutive vector, derivative of pMM1525), and pHPQ (sucrose-inducible, constructed based on pHB201), were used to produce lipase in B. subtilis. Recombinant B. subtilis WB800 cells harboring the pHPQ-PVL plasmid could synthesize and secrete the PVL protein in high yield. The lipase activity reached 356.8 U/mL after induction with sucrose for 72 h in shake-flask culture, representing a 12-fold increase over the native lipase activity in P. vulgaris. The characteristics of the heterologously expressed lipase were identical to those of the native one.
ESTHER : Lu_2010_J.Ind.Microbiol.Biotechnol_37_919
PubMedSearch : Lu_2010_J.Ind.Microbiol.Biotechnol_37_919
PubMedID: 20490605
Gene_locus related to this paper: provu-lipas

Title : Identification of resistance-responsive proteins in larvae of Bactrocera dorsalis (Hendel), for pyrethroid toxicity by a proteomic approach - Jin_2010_Pestic.Biochem.Physiol_96_1
Author(s) : Jin T , Zeng L , Lu Y , Xu Y , Liang G
Ref : Pesticide Biochemistry and Physiology , 96 :1 , 2010
Abstract : Insect resistance to the pyrethroid toxins has been examined previously using a number of traditional biochemical and molecular techniques. In this study, a proteomic approach involving two-dimensional polyacrylamide gel electrophoresis (2D-PAGE), matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) and tandem mass spectrometry (MS/MS) were applied to examine changes in resistant stains larvae of Bactracera dorsalis Hendel induced by pyrethroid treatment over a 3 h, 6 h and 12 h time period, and a number of proteins changes were observed to change in the level of regulation. Out of total 15 proteins, 9 proteins were observed only after pyrethroid treatment; 6 proteins showed different expression. After MALDI-TOF analyses and peptide mapping method, the data was compared with those of the known proteins available in public databases. Sequence analyses revealed that resistance response correlates with up-regulation (glycerol-3-phosphate dehydrogenase) and down-regulation (ATP-ADP antiporter) of energy-related proteins. It indicated that increased metabolism and energy-indeed as a resistance response to pyrethroid toxins. The regulation of cytoskeleton proteins were possibly a B. dorsalis tissue repair response or in cell division. Up-regulation of protein synthesis would results in substantial bioenergetic enhancement, suggesting a trade-off insect resistance to pyrethroid. Down regulation of neural protein indicated that neural system was physically injured after pyrethroid stress. Some remaining proteins were not identifiable, suggesting these may be novel proteins. Oriental fruit fly proteomes of pesticide induced provide an integrative basis for consolidating our knowledge of insect resistance. The results pave the way for future investigation of the alteration of the insect resistance to chemical pesticides.
ESTHER : Jin_2010_Pestic.Biochem.Physiol_96_1
PubMedSearch : Jin_2010_Pestic.Biochem.Physiol_96_1

Title : Cloning, characterization, and expression of a novel secretory lipase-like gene from Clonorchis sinensis - Hu_2009_Parasitol.Res_105_1661
Author(s) : Hu F , Chen W , Li L , Lu Y , Song W , Kuang Y , Zhang F
Ref : Parasitol Res , 105 :1661 , 2009
Abstract : A secretory lipase-like gene was isolated from total cDNA of adult Clonorchis sinensis. The gene has an open reading frame of 1,218 bp long and encodes for a protein of 406 amino acids including a putative signal peptide of 20 amino acids. The deduced amino acid sequence including signal peptide has 42-45% identity with lipase of other species and two typical enzymic active sites that contain consensus sequence (Gly-X-Ser-X-Gly) of lipase. The cDNA encoding this protein was subcloned into pET-28a (+) expression vector and expressed in Escherichia coli. The expressed fusion protein has a molecular mass of about 45 kDa. Prediction of signal peptide and Western blot analysis indicated that the secretory lipase-like protein is an excretory-secretory product of C. sinensis. Immunostaining revealed that the secretory lipase-like protein was localized in the tegument of the adult worm and metacercaria. These results provide basis for further studies on the nutrition taking and invasion of C. sinensis mediated by the secretory lipase-like protein.
ESTHER : Hu_2009_Parasitol.Res_105_1661
PubMedSearch : Hu_2009_Parasitol.Res_105_1661
PubMedID: 19756752
Gene_locus related to this paper: closi-c3v6k8

Title : The genome of the cucumber, Cucumis sativus L - Huang_2009_Nat.Genet_41_1275
Author(s) : Huang S , Li R , Zhang Z , Li L , Gu X , Fan W , Lucas WJ , Wang X , Xie B , Ni P , Ren Y , Zhu H , Li J , Lin K , Jin W , Fei Z , Li G , Staub J , Kilian A , van der Vossen EA , Wu Y , Guo J , He J , Jia Z , Tian G , Lu Y , Ruan J , Qian W , Wang M , Huang Q , Li B , Xuan Z , Cao J , Asan , Wu Z , Zhang J , Cai Q , Bai Y , Zhao B , Han Y , Li Y , Li X , Wang S , Shi Q , Liu S , Cho WK , Kim JY , Xu Y , Heller-Uszynska K , Miao H , Cheng Z , Zhang S , Wu J , Yang Y , Kang H , Li M , Liang H , Ren X , Shi Z , Wen M , Jian M , Yang H , Zhang G , Yang Z , Chen R , Ma L , Liu H , Zhou Y , Zhao J , Fang X , Fang L , Liu D , Zheng H , Zhang Y , Qin N , Li Z , Yang G , Yang S , Bolund L , Kristiansen K , Li S , Zhang X , Wang J , Sun R , Zhang B , Jiang S , Du Y
Ref : Nat Genet , 41 :1275 , 2009
Abstract : Cucumber is an economically important crop as well as a model system for sex determination studies and plant vascular biology. Here we report the draft genome sequence of Cucumis sativus var. sativus L., assembled using a novel combination of traditional Sanger and next-generation Illumina GA sequencing technologies to obtain 72.2-fold genome coverage. The absence of recent whole-genome duplication, along with the presence of few tandem duplications, explains the small number of genes in the cucumber. Our study establishes that five of the cucumber's seven chromosomes arose from fusions of ten ancestral chromosomes after divergence from Cucumis melo. The sequenced cucumber genome affords insight into traits such as its sex expression, disease resistance, biosynthesis of cucurbitacin and 'fresh green' odor. We also identify 686 gene clusters related to phloem function. The cucumber genome provides a valuable resource for developing elite cultivars and for studying the evolution and function of the plant vascular system.
ESTHER : Huang_2009_Nat.Genet_41_1275
PubMedSearch : Huang_2009_Nat.Genet_41_1275
PubMedID: 19881527
Gene_locus related to this paper: cucsa-a0a0a0ktw5 , cucsa-a0a0a0lnt6 , cucsa-a0a0a0kpn7 , cucsa-a0a0a0lvt9 , cucsa-a0a0a0kdx8 , cucsa-a0a0a0m228 , cucsa-a0a0a0kz31 , cucsa-a0a0a0k5t5 , cucsa-a0a0a0kfs7 , cucsa-a0a0a0kjj7 , cucsa-a0a0a0kzs7 , cucsa-a0a0a0l0a6 , cucsa-a0a0a0l4w4 , cucsa-a0a0a0lpz0 , cucsa-a0a0a0ls66

Title : Multiple mechanisms responsible for differential susceptibilities of Sitobion avenae (Fabricius) and Rhopalosiphum padi (Linnaeus) to pirimicarb - Lu_2009_Bull.Entomol.Res_99_611
Author(s) : Lu Y , Gao X
Ref : Bull Entomol Res , 99 :611 , 2009
Abstract : Both Sitobion avenae (Fabricius) and Rhopalosiphum padi (Linnaeus) are the most important pests of wheat in China and usually coexist on the late period of wheat growth. Pirimicarb was introduced into China for wheat aphid control in early 1990s, and differential susceptibilities of Sitobion avenae (Fabricius) and Rhopalosiphum padi (Linnaeus) to pirimicarb have been observed. A bioassay exhibited that Rhopalosiphum padi possessed significantly higher susceptibility to pirimicarb than Sitobion avenae. The addition of synergists DEF, an esterase inhibitor, PBO, a cytochrome P450 monooxygenase inhibitor, and DEM, a glutathione S-transferase inhibitor, resulted in apparent reductions in the differential susceptibilities, suggesting the involvement of the above three detoxification enzymes in the differential susceptibility to pirimicarb between Sitobion avenae and Rhopalosiphum padi. A biochemical analysis showed that the activities of carboxylesterases and glutathione S-transferases were significantly higher in Sitobion avenae than in Rhopalosiphum padi, consistent with the results of synergism. Acetylcholinesterase is the target enzyme of pirimicarb and the sensitivity of acetylcholinesterase to pirimicarb was significantly higher in Rhopalosiphum padi than in Sitobion avenae. The combined results suggest that multiple mechanisms are likely to be responsible for differential susceptibilities to pirimicarb between Sitobion avenae and Rhopalosiphum padi. The results obtained from this study should be helpful in the rational applications of insecticides.
ESTHER : Lu_2009_Bull.Entomol.Res_99_611
PubMedSearch : Lu_2009_Bull.Entomol.Res_99_611
PubMedID: 19413913

Title : Multiple genetic variants along candidate pathways influence plasma high-density lipoprotein cholesterol concentrations - Lu_2008_J.Lipid.Res_49_2582
Author(s) : Lu Y , Dolle ME , Imholz S , van 't Slot R , Verschuren WM , Wijmenga C , Feskens EJ , Boer JM
Ref : J Lipid Res , 49 :2582 , 2008
Abstract : The known genetic variants determining plasma HDL cholesterol (HDL-C) levels explain only part of its variation. Three hundred eighty-four single nucleotide polymorphisms (SNPs) across 251 genes based on pathways potentially relevant to HDL-C metabolism were selected and genotyped in 3,575 subjects from the Doetinchem cohort, which was examined thrice over 11 years. Three hundred fifty-three SNPs in 239 genes passed the quality-control criteria. Seven SNPs [rs1800777 and rs5882 in cholesteryl ester transfer protein (CETP); rs3208305, rs328, and rs268 in LPL; rs1800588 in LIPC; rs2229741 in NRIP1] were associated with plasma HDL-C levels with false discovery rate (FDR) adjusted q values (FDR_q) < 0.05. Five other SNPs (rs17585739 in SC4MOL, rs11066322 in PTPN11, rs4961 in ADD1, rs6060717 near SCAND1, and rs3213451 in MBTPS2 in women) were associated with plasma HDL-C levels with FDR_q between 0.05 and 0.2. Two less well replicated associations (rs3135506 in APOA5 and rs1800961 in HNF4A) known from the literature were also observed, but their significance disappeared after adjustment for multiple testing (P = 0.008, FDR_q = 0.221 for rs3135506; P = 0.018, FDR_q = 0.338 for rs1800961, respectively). In addition to replication of previous results for candidate genes (CETP, LPL, LIPC, HNF4A, and APOA5), we found interesting new candidate SNPs (rs2229741 in NRIP1, rs3213451 in MBTPS2, rs17585739 in SC4MOL, rs11066322 in PTPN11, rs4961 in ADD1, and rs6060717 near SCAND1) for plasma HDL-C levels that should be evaluated further.
ESTHER : Lu_2008_J.Lipid.Res_49_2582
PubMedSearch : Lu_2008_J.Lipid.Res_49_2582
PubMedID: 18660489

Title : Molecular fundamentals of enzyme nanogels - Ge_2008_J.Phys.Chem.B_112_14319
Author(s) : Ge J , Lu D , Wang J , Yan M , Lu Y , Liu Z
Ref : J Phys Chem B , 112 :14319 , 2008
Abstract : The assembly of a monomer around an enzyme as the essential step in the fabrication of enzyme nanogel by in situ polymerization was illustrated by molecular dynamics simulation and evidenced by a fluorescence resonance energy transfer spectrum, using lipase/acrylamide as a model system. The subsequent polymerization generated a hydrophilic gel network which not only strengthened the protein structural integrity via multipoint linkage but also increased the number of intramolecular H-bonds of the encapsulated protein, as suggested by the blue shift of the fluorescence spectrum of the encapsulated lipase. This greatly enhanced the stability of lipase at high temperature, as experimentally demonstrated. The exclusion of polar solvent molecules from the encapsulated enzyme, in contrast to the enrichment of water molecules, due to the presence of a hydrophilic gel network was displayed. This established a hydrophilic microenvironment for the encapsulated protein and thus gave the encapsulated protein an enhanced tolerance to the organic solvent, as experimentally observed in the present study and reported elsewhere. These results have given a molecular insight into the enzyme nanogel as well as its high potential as a robust enzyme model for an expended application spectrum of enzymatic catalysis.
ESTHER : Ge_2008_J.Phys.Chem.B_112_14319
PubMedSearch : Ge_2008_J.Phys.Chem.B_112_14319
PubMedID: 18939792

Title : The secretion and uptake of lysosomal phospholipase A2 by alveolar macrophages - Abe_2008_J.Immunol_181_7873
Author(s) : Abe A , Kelly R , Kollmeyer J , Hiraoka M , Lu Y , Shayman JA
Ref : J Immunol , 181 :7873 , 2008
Abstract : Macrophages have long been known to secrete a Phospholipase A(2) with an acidic pH optimum in response to phagocytic stimuli. However, the enzyme or enzymes responsible for this activity have not been identified. We report that mouse alveolar macrophages release lysosomal phospholipase A(2) (LPLA(2)) into the medium of cultured cells following stimulation with zymosan. The release of the enzyme was detected by enzymatic activity assays as well as by Western blotting using an Ab against mouse LPLA(2). LPLA(2) is a high mannose type glycoprotein found in lysosomes, suggesting that the released enzyme might be reincorporated into alveolar macrophages via a mannose or mannose phosphate receptor. Recombinant glycosylated mouse LPLA(2) produced by HEK293 cells was applied to LPLA(2)-deficient (LPLA(2)(-/-)) mouse alveolar macrophages. The uptake of exogenous LPLA(2) into LPLA(2)(-/-) alveolar macrophages occurred in a concentration-dependent manner. The LPLA(2) taken into the alveolar macrophages colocalized with the lysosomal marker, Lamp-1. This uptake was significantly suppressed in the presence of alpha-methyl-mannoside but not in the presence of mannose 6-phosphate. Thus, the predominant pathway for uptake of exogenous LPLA(2) is via the mannose receptor, with subsequent translocation into acidic, Lamp-1-associated compartments. LPLA(2)(-/-) alveolar macrophages are characterized by marked accumulation of phosphatidylcholine and phosphatidylethanolamine. Treatment with the recombinant LPLA(2) rescued the LPLA(2)(-/-) alveolar macrophages by markedly decreasing the phospholipid accumulation. The application of a catalytically inactive LPLA(2) revealed that the enzymatic activity of LPLA(2) was required for the phospholipid reduction. These studies identify LPLA(2) as a high m.w.-secreted Phospholipase A(2).
ESTHER : Abe_2008_J.Immunol_181_7873
PubMedSearch : Abe_2008_J.Immunol_181_7873
PubMedID: 19017977

Title : Pharmacological profile of the alpha4beta2 nicotinic acetylcholine receptor partial agonist varenicline, an effective smoking cessation aid - Rollema_2007_Neuropharmacol_52_985
Author(s) : Rollema H , Chambers LK , Coe JW , Glowa J , Hurst RS , Lebel LA , Lu Y , Mansbach RS , Mather RJ , Rovetti CC , Sands SB , Schaeffer E , Schulz DW , Tingley FD, 3rd , Williams KE
Ref : Neuropharmacology , 52 :985 , 2007
Abstract : The preclinical pharmacology of the alpha4beta2 nicotinic acetylcholine receptor (nAChR) partial agonist varenicline, a novel smoking cessation agent is described. Varenicline binds with subnanomolar affinity only to alpha4beta2 nAChRs and in vitro functional patch clamp studies in HEK cells expressing nAChRs show that varenicline is a partial agonist with 45% of nicotine's maximal efficacy at alpha4beta2 nAChRs. In neurochemical models varenicline has significantly lower (40-60%) efficacy than nicotine in stimulating [(3)H]-dopamine release from rat brain slices in vitro and in increasing dopamine release from rat nucleus accumbens in vivo, while it is more potent than nicotine. In addition, when combined with nicotine, varenicline effectively attenuates the nicotine-induced dopamine release to the level of the effect of varenicline alone, consistent with partial agonism. Finally, varenicline reduces nicotine self-administration in rats and supports lower self-administration break points than nicotine. These data suggest that varenicline can reproduce to some extent the subjective effects of smoking by partially activating alpha4beta2 nAChRs, while preventing full activation of these receptors by nicotine. Based on these findings, varenicline was advanced into clinical development and recently shown to be an effective and safe aid for smoking cessation treatment.
ESTHER : Rollema_2007_Neuropharmacol_52_985
PubMedSearch : Rollema_2007_Neuropharmacol_52_985
PubMedID: 17157884

Title : Benzylphenethylamine alkaloids from Hosta plantaginea with inhibitory activity against tobacco mosaic virus and acetylcholinesterase - Wang_2007_J.Nat.Prod_70_1458
Author(s) : Wang YH , Zhang ZK , Yang FM , Sun QY , He HP , Di YT , Mu SZ , Lu Y , Chang Y , Zheng QT , Ding M , Dong JH , Hao XJ
Ref : Journal of Natural Products , 70 :1458 , 2007
Abstract : Five new benzylphenethylamine alkaloids, hostasine (1), 8-demethoxyhostasine, 8-demethoxy-10-O-methylhostasine, 10-O-methylhostasine, and 9-O-demethyl-7-O-methyllycorenine, along with 12 known compounds, were isolated from Hosta plantaginea by bioassay-guided fractionation. The structures of the new alkaloids were established by means of extensive spectroscopic methods, and the relative configuration of 1 was further confirmed by single-crystal X-ray diffraction. 7-Deoxy-trans-dihydronarciclasine (IC(50) = 1.80 microM), a known alkaloid, showed strong activity against tobacco mosaic virus by the half-leaf method. Some of these alkaloids were also evaluated for their inhibitory activity against acetylcholinesterase. 8-Demethoxy-10-O-methylhostasine was found to possess significant activity, with an IC(50) of 2.32 microM.
ESTHER : Wang_2007_J.Nat.Prod_70_1458
PubMedSearch : Wang_2007_J.Nat.Prod_70_1458
PubMedID: 17822295

Title : Lysosomal phospholipase A2 and phospholipidosis - Hiraoka_2006_Mol.Cell.Biol_26_6139
Author(s) : Hiraoka M , Abe A , Lu Y , Yang K , Han X , Gross RW , Shayman JA
Ref : Molecular & Cellular Biology , 26 :6139 , 2006
Abstract : A lysosomal phospholipase A2, LPLA2, was recently characterized and shown to have substrate specificity for phosphatidylcholine and phosphatidylethanolamine. LPLA2 is ubiquitously expressed but is most highly expressed in alveolar macrophages. Double conditional gene targeting was employed to elucidate the function of LPLA2. LPLA2-deficient mice (Lpla2-/-) were generated by the systemic deletion of exon 5 of the Lpla2 gene, which encodes the lipase motif essential for the phospholipase A2 activity. The survival of the Lpla2-/- mice was normal. Lpla2-/- mouse mating pairs yielded normal litter sizes, indicating that the gene deficiency did not impair fertility or fecundity. Alveolar macrophages from wild-type but not Lpla2-/- mice readily degraded radiolabeled phosphatidylcholine. A marked accumulation of phospholipids, in particular phosphatidylethanolamine and phosphatidylcholine, was found in the alveolar macrophages, the peritoneal macrophages, and the spleens of Lpla2-/- mice. By 1 year of age, Lpla2-/- mice demonstrated marked splenomegaly and increased lung surfactant phospholipid levels. Ultrastructural examination of Lpla2-/- mouse alveolar and peritoneal macrophages revealed the appearance of foam cells with lamellar inclusion bodies, a hallmark of cellular phospholipidosis. Thus, a deficiency of lysosomal phospholipase A2 results in foam cell formation, surfactant lipid accumulation, splenomegaly, and phospholipidosis in mice.
ESTHER : Hiraoka_2006_Mol.Cell.Biol_26_6139
PubMedSearch : Hiraoka_2006_Mol.Cell.Biol_26_6139
PubMedID: 16880524

Title : Varenicline: an alpha4beta2 nicotinic receptor partial agonist for smoking cessation - Coe_2005_J.Med.Chem_48_3474
Author(s) : Coe JW , Brooks PR , Vetelino MG , Wirtz MC , Arnold EP , Huang J , Sands SB , Davis TI , Lebel LA , Fox CB , Shrikhande A , Heym JH , Schaeffer E , Rollema H , Lu Y , Mansbach RS , Chambers LK , Rovetti CC , Schulz DW , Tingley FD, 3rd , O'Neill BT
Ref : Journal of Medicinal Chemistry , 48 :3474 , 2005
Abstract : Herein we describe a novel series of compounds from which varenicline (1, 6,7,8,9-tetrahydro-6,10-methano-6H-pyrazino[2,3-h][3]benzazepine) has been identified for smoking cessation. Neuronal nicotinic acetylcholine receptors (nAChRs) mediate the dependence-producing effects of nicotine. We have pursued alpha4beta2 nicotinic receptor partial agonists to inhibit dopaminergic activation produced by smoking while simultaneously providing relief from the craving and withdrawal syndrome that accompanies cessation attempts. Varenicline displays high alpha4beta2 nAChR affinity and the desired in vivo dopaminergic profile.
ESTHER : Coe_2005_J.Med.Chem_48_3474
PubMedSearch : Coe_2005_J.Med.Chem_48_3474
PubMedID: 15887955

Title : Sequence and analysis of rice chromosome 4 - Feng_2002_Nature_420_316
Author(s) : Feng Q , Zhang Y , Hao P , Wang S , Fu G , Huang Y , Li Y , Zhu J , Liu Y , Hu X , Jia P , Zhao Q , Ying K , Yu S , Tang Y , Weng Q , Zhang L , Lu Y , Mu J , Zhang LS , Yu Z , Fan D , Liu X , Lu T , Li C , Wu Y , Sun T , Lei H , Li T , Hu H , Guan J , Wu M , Zhang R , Zhou B , Chen Z , Chen L , Jin Z , Wang R , Yin H , Cai Z , Ren S , Lv G , Gu W , Zhu G , Tu Y , Jia J , Chen J , Kang H , Chen X , Shao C , Sun Y , Hu Q , Zhang X , Zhang W , Wang L , Ding C , Sheng H , Gu J , Chen S , Ni L , Zhu F , Chen W , Lan L , Lai Y , Cheng Z , Gu M , Jiang J , Li J , Hong G , Xue Y , Han B
Ref : Nature , 420 :316 , 2002
Abstract : Rice is the principal food for over half of the population of the world. With its genome size of 430 megabase pairs (Mb), the cultivated rice species Oryza sativa is a model plant for genome research. Here we report the sequence analysis of chromosome 4 of O. sativa, one of the first two rice chromosomes to be sequenced completely. The finished sequence spans 34.6 Mb and represents 97.3% of the chromosome. In addition, we report the longest known sequence for a plant centromere, a completely sequenced contig of 1.16 Mb corresponding to the centromeric region of chromosome 4. We predict 4,658 protein coding genes and 70 transfer RNA genes. A total of 1,681 predicted genes match available unique rice expressed sequence tags. Transposable elements have a pronounced bias towards the euchromatic regions, indicating a close correlation of their distributions to genes along the chromosome. Comparative genome analysis between cultivated rice subspecies shows that there is an overall syntenic relationship between the chromosomes and divergence at the level of single-nucleotide polymorphisms and insertions and deletions. By contrast, there is little conservation in gene order between rice and Arabidopsis.
ESTHER : Feng_2002_Nature_420_316
PubMedSearch : Feng_2002_Nature_420_316
PubMedID: 12447439
Gene_locus related to this paper: orysa-Q7XTC5 , orysa-Q7F959 , orysa-q7f9i3 , orysa-q7x7y5 , orysa-q7xkj9 , orysa-q7xr62 , orysa-q7xr63 , orysa-q7xr64 , orysa-q7xsg1 , orysa-q7xsq2 , orysa-Q7XTM8 , orysa-q7xts6 , orysa-q7xue7 , orysa-q7xv53 , orysa-Q7XVB5 , orysa-Q7XVG5 , orysj-q0jaf0 , orysj-q7f8x1

Title : Pharmacological and null mutation approaches reveal nicotinic receptor diversity - Whiteaker_2000_Eur.J.Pharmacol_393_123
Author(s) : Whiteaker P , Marks MJ , Grady SR , Lu Y , Picciotto MR , Changeux JP , Collins AC
Ref : European Journal of Pharmacology , 393 :123 , 2000
Abstract : We have developed an array of assays for nicotinic acetylcholine receptor binding and function. [125I]alpha-Bungarotoxin-, (-)-[3H]nicotine-, and [3H]epibatidine-binding nicotinic acetylcholine receptors were assayed in mouse brain membranes and sections. Nicotinic acetylcholine receptor function was quantified using synaptosomal [3H]dopamine, [3H]gamma-aminobutyric acid ([3H]GABA), and 86Rb(+) efflux techniques. Additionally, the effects of beta2 subunit deletion on each of the measures were assessed. Detailed pharmacological comparison revealed minimally six nicotinic binding subtypes: [125I]alpha-bungarotoxin-binding nicotinic acetylcholine receptors; beta2-subunit-dependent and -independent high-affinity (-)-[3H]nicotine-binding sites; beta2-dependent and -independent cytisine-resistant [3H]epibatidine-binding sites; and a beta2-dependent low-affinity [3H]epibatidine binding site. Comparative pharmacology suggested that [3H]GABA and dihydro-beta-erythroidine (DHbetaE)-sensitive 86Rb(+) efflux are mediated by the same (probably alpha4beta2) nicotinic acetylcholine receptor subtype, while other nicotinic acetylcholine receptor subtypes evoke [3H]dopamine and DHbetaE-resistant 86Rb(+) efflux. In whole-brain preparations, each measure of nicotinic acetylcholine receptor function was beta2 dependent. The majority of beta2-independent [3H]epibatidine binding was located in small, scattered brain nuclei, suggesting that individual nuclei may prove suitable for identification of novel, native nicotinic acetylcholine receptors.
ESTHER : Whiteaker_2000_Eur.J.Pharmacol_393_123
PubMedSearch : Whiteaker_2000_Eur.J.Pharmacol_393_123
PubMedID: 10771005