Tang C

References (21)

Title : Genome-wide association studies of egg production traits by whole genome sequencing of Laiwu Black chicken - Lei_2024_Poult.Sci_103_103705
Author(s) : Lei Q , Zhang S , Wang J , Qi C , Liu J , Cao D , Li F , Han H , Liu W , Li D , Tang C , Zhou Y
Ref : Poult Sci , 103 :103705 , 2024
Abstract : Compared to high-yield commercial laying hens, Chinese indigenous chicken breeds have poor egg laying capacity due to the lack of intensive selection. However, as these breeds have not undergone systematic selection, it is possible that there is a greater abundance of genetic variations related to egg laying traits. In this study, we assessed 5 egg number (EN) traits at different stages of the egg-laying period: EN1 (from the first egg to 23 wk), EN2 (from 23 to 35 wk), EN3 (from 35 to 48 wk), EN4 (from the first egg to 35 wk), and EN5 (from the first egg to 48 wk). To investigate the molecular mechanisms underlying egg number traits in a Chinese local chicken breed, we conducted a genome-wide association study (GWAS) using data from whole-genome sequencing (WGS) of 399 Laiwu Black chickens. We obtained a total of 3.01 Tb of raw data with an average depth of 7.07 x per individual. A total of 86 genome-wide suggestive or significant single-nucleotide polymorphisms (SNP) contained within a set of 45 corresponding candidate genes were identified and found to be associated with stages EN1-EN5. The genes vitellogenin 2 (VTG2), lipase maturation factor 1 (LMF1), calcium voltage-gated channel auxiliary subunit alpha2delta 3 (CACNA2D3), poly(A) binding protein cytoplasmic 1 (PABPC1), programmed cell death 11 (PDCD11) and family with sequence similarity 213 member A (FAM213A) can be considered as the candidate genes associated with egg number traits, due to their reported association with animal reproduction traits. Noteworthy, results suggests that VTG2 and PDCD11 are not only involved in the regulation of EN3, but also in the regulation of EN5, implies that VTG2 and PDCD11 have a significant influence on egg production traits. Our study offers valuable genomic insights into the molecular genetic mechanisms that govern egg number traits in a Chinese indigenous egg-laying chicken breed. These findings have the potential to enhance the egg-laying performance of chickens.
ESTHER : Lei_2024_Poult.Sci_103_103705
PubMedSearch : Lei_2024_Poult.Sci_103_103705
PubMedID: 38598913

Title : Sitagliptin attenuates neuronal apoptosis via inhibiting the endoplasmic reticulum stress after acute spinal cord injury - Tang_2023_Hum.Exp.Toxicol_42_9603271231168761
Author(s) : Tang C , Xu T , Dai M , Zhong X , Shen G , Liu L
Ref : Hum Exp Toxicol , 42 :9603271231168761 , 2023
Abstract : Regulation of endoplasmic reticulum stress (ER) stress-induced apoptosis and nerve regeneration is a hopeful way for acute spinal cord injury (SCI). Sitagliptin (Sita) is one of dipeptidyl peptidase-4 (DPP-4) inhibitor, which is beneficial neurons damaged diseases. However, its protective mechanisms of avoiding nerve injury remain unclear. In this study, we further investigated the mechanism of the anti-apoptotic and neuroprotective effects of Sita in promoting locomotor recovery from SCI. In vivo results showed that Sita treatment reduced neural apoptosis caused by SCI. Moreover, Sita effectively attenuated the ER tress and associated apoptosis in rats with SCI. A striking feature was the occurrence of nerve fiber regeneration at the lesion site, which eventually led to significant locomotion recovery. In vitro results showed that the PC12 cell injury model induced by Thapsigargin (TG) also showed similar neuroprotective effects. Overall, sitagliptin showed potent neuroprotective effects by targeting the ER stress-induced apoptosis both in vivo and vitro, thus facilitating the regeneration of the injured spinal cord.
ESTHER : Tang_2023_Hum.Exp.Toxicol_42_9603271231168761
PubMedSearch : Tang_2023_Hum.Exp.Toxicol_42_9603271231168761
PubMedID: 36977492

Title : Molecular mechanisms by which targeted muscle reinnervation improves the microenvironment of spinal cord motor neurons and target muscles - Lu_2022_Neurosci.Lett_789_136879
Author(s) : Lu W , Jiang Z , Tang C , Wang P , Yang L
Ref : Neuroscience Letters , 789 :136879 , 2022
Abstract : Targeted muscle reinnervation is a clinically valuable nerve transfers technology used to reconstruct the information sources reconstruct the motor nerve information sources lost because of nerve injury. This study aimed to investigate the effects and underlying molecular mechanisms of hind limb TMR on motor neurons and target muscles in rats after tibial nerve transection (TNT). Immunohistochemistry was performed to detect acetylcholinesterase expression in the target muscles and myelin basic protein, neuregulin-1 (NRG1), and ErbB2 expression in the tibial nerve of rats. Masson's trichrome staining was performed to observe fibrillar collagen expression in the target muscles. Western blot analysis was used to detect the protein expression of NRG1 and its receptor, ErbB2, in the target muscles. TMR significantly enhanced NRG1, ErbB2, and myelin basic protein expression in nerve fibers compared with those in the TNT group and exerted a protective effect on the maintenance of a large number of nerve fibers and myelin sheath thickness. The above results indicated that TMR can regulate NRG1 and ErbB2 expression in residual nerve fibers and protect the integrity of the myelin sheath, thus improving the functional status of the target muscles, which is beneficial for restoring hind limb motor function after TNT.
ESTHER : Lu_2022_Neurosci.Lett_789_136879
PubMedSearch : Lu_2022_Neurosci.Lett_789_136879
PubMedID: 36152746

Title : Anoectochilus roxburghii flavonoids extract ameliorated the memory decline and reduced neuron apoptosis via modulating SIRT1 signaling pathway in senescent mice - Zeng_2022_J.Ethnopharmacol__115361
Author(s) : Zeng Z , Chen C , Situ Y , Shen Z , Chen Y , Zhang Z , Tang C , Jiang T
Ref : J Ethnopharmacol , :115361 , 2022
Abstract : ETHNOPHARMACOLOGICAL RELEVANCE: Anoectochilus roxburghii (A. roxburghii) is a precious herb and folk medicine in many Asian countries. It has been used traditionally to treat diabetes, etc., and also used as a dietary therapy to delay senescence. AIM OF THE STUDY: This study was to evaluate the neuroprotective effects of A. roxburghii flavonoids extract (ARF) and whether its effects were due to the regulation of SIRT1 signaling pathway in senescent mice and in D-galactose (D-gal) induced aging in SH-SY5Y cells. MATERIALS AND METHODS: 18-month-old mice were randomly divided into senescent model, low-dose ARF, high-dose ARF and vitamin E group. 2-Month-old mice were as a control group. After 8 weeks treatment, Morris water maze (MWM) was performed. The levels of reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), monoamine oxidase (MAO) and acetylcholinesterase (AChE) in the cortex were determined. Hippocampus morphologic changes were observed with haematoxylin and eosin (H&E), Nissl, senescence-associated-galactosidase (SA-beta-gal) and terminal deoxynucleotidyl transferase nick-end labeling (TUNEL) staining. Apoptosis-related molecular expressions in the hippocampus were performed by western blotting. Furthermore, after stimulated by EX527 (a SIRT1 inhibitor), the SIRT1-dependent neuroprotective effects of ARF were determined by measuring SRIT1 and p53 expression in SH-SY5Y aging cells induced by D-gal. RESULTS: ARF could significantly ameliorated memory decline in senescent mice and reduced the generations of ROS, MDA and the activities of MAO and ACh-E, while increasing SOD activities in the cortex of aging mice. ARF obviously improved hippocampus pathological alterations, increased the number of Nissl bodies, while reducing senescent and apoptotic cells in senescent mice hippocampus. Further, ARF positively regulated SIRT1 expression, and reduced apoptosis-related molecules p53, p21 and Caspase-3 expression, while increasing the ratio of Bcl-2/Bax. In D-gal-induced SH-SY5Y cells, the effects of ARF on SIRT1 and p53, and the ability of scavenging ROS were mostly abolished after incubation with the EX527. CONCLUSIONS: ARF, in a SIRT1-dependent manner, exerted neuroprotection via modulating SIRT1/p53 signaling pathway against memory decline and apoptosis due to age-induced oxidative stress damage in senescent mice.
ESTHER : Zeng_2022_J.Ethnopharmacol__115361
PubMedSearch : Zeng_2022_J.Ethnopharmacol__115361
PubMedID: 35609756

Title : Novel AP2238-clorgiline hybrids as multi-target agents for the treatment of Alzheimer's disease: Design, synthesis, and biological evaluation - Zhong_2022_Bioorg.Chem_130_106224
Author(s) : Zhong G , Guo J , Pang C , Su D , Tang C , Jing L , Zhang F , He P , Yan Y , Chen Z , Liu J , Jiang N
Ref : Bioorg Chem , 130 :106224 , 2022
Abstract : Cholinesterase and monoamine oxidase are potential targets for the therapy of Alzheimer's disease. A series of novel AP2238-clorgiline hybrids as multi-target agents were designed, synthesized and investigated in vitro for their inhibition of cholinesterases and monoamine oxidases. Many compounds displayed balanced and good inhibitory activity against AChE, BuChE and MAO-B with an obvious selective inhibitory effect on MAO-B. Among them, Compound 5l showed the most balanced potency to inhibit ChEs (eeAChE: IC(50) = 4.03 +/- 0.03 microM, eqBuChE: IC(50) = 5.64 +/- 0.53 microM; hAChE: IC(50) = 8.30 +/- 0.04 microM, hBuChE: IC(50) = 1.91 +/- 0.06 microM) and hMAO-B (IC(50) = 3.29 +/- 0.09 microM). Molecular modeling and kinetic studies showed that 5l was a mixed inhibitor for both AChE and BuChE, and a competitive MAO-B inhibitor. Compound 5l exhibited no toxicity to PC12 and BV-2 cells at 12.5 microM and no acute toxicity at a dosage of 2500 mg/kg. Moreover, 5l can improve the memory function of mice with scopolamine-induced memory impairment and have an excellent ability to cross the blood-brain barrier. Overall, these findings suggested that compound 5l could be deemed as a promising, balanced multi-target drug candidate against Alzheimer's disease.
ESTHER : Zhong_2022_Bioorg.Chem_130_106224
PubMedSearch : Zhong_2022_Bioorg.Chem_130_106224
PubMedID: 36332315

Title : Ferulic acid regulates miR-17\/PTEN axis to inhibit LPS-induced pulmonary microvascular endothelial cells apoptosis through activation of PI3K\/Akt pathway - Zhang_2022_J.Toxicol.Sci_47_61
Author(s) : Zhang Q , Wang Z , Zhu J , Peng Z , Tang C
Ref : Journal of Toxicological Sciences , 47 :61 , 2022
Abstract : Acute lung injury (ALI) is mainly mediated by the damage of pulmonary microvascular endothelial cells (PMVECs). LPS is one of the pathogenic factors leading to microcirculatory abnormalities of ALI. Ferulic acid (FA) exhibits therapeutic eects against various diseases. During lipopolysaccharide-induced acute respiratory distress syndrome, FA, when given beforehand, could depress inflammation and oxidative stress. However, the concrete role and underlying mechanism of FA in ALI have not been well characterized. Ten microg/mL Lipopolysaccharide (LPS) was used to treat rat PMVECs for 24 hr. qRT-PCR was used to detect the level of miR-17 and phosphatase and tensin homolog deleted on chromosome ten (PTEN). Western blot was used to analyze the associated proteins in the PI3K/Akt pathway, and the apoptosis-related proteins. Flow cytometric analysis was performed to detect the apoptosis of PMVECs. MTT assay was constructed to detect the cell viability. Luciferase assay was conducted to detect the target gene of miR-17 and PTEN. A cell model for in vitro studying the role of FA in ALI was established using PMVECs. Our data demonstrate that FA up-regulates miR-17 and declines apoptosis induced by LPS. FA inhibits apoptosis mediated by up-regulating miR-17. Furthermore, we found miR-17 targeted PTEN negatively. FA inhibits cleaved caspase-3 and Bax expression through the PI3K/Akt pathway mediated by up-regulating miR-17. Over-expression of PTEN could contribute to the similar expression trend of the PI3K/Akt signal pathway protein compared to miR-17 inhibitor transfected cells. FA inhibits PMVECs apoptosis induced by LPS via miR-17/PTEN to further regulate the activation of the PI3K/Akt pathway in ALI. We anticipate that our data will provoke additional studies for ALI clinical therapy.
ESTHER : Zhang_2022_J.Toxicol.Sci_47_61
PubMedSearch : Zhang_2022_J.Toxicol.Sci_47_61
PubMedID: 35110471

Title : Melamine Disrupts Acetylcholine-Mediated Neural Information Flow in the Hippocampal CA3-CA1 Pathway - Sun_2021_Front.Behav.Neurosci_15_594907
Author(s) : Sun W , Liu P , Tang C , An L
Ref : Front Behavioral Neuroscience , 15 :594907 , 2021
Abstract : Considering the cognitive and synaptic deficits following intragastric administration of melamine, the aim of the current investigation was to test whether the hippocampal oscillations were affected. The local field potential (LFP) was recorded in the hippocampal CA3-CA1 pathway of Wistar rats during a spatial-dependent Y-maze task. The general partial directed coherence (gPDC) method was used to assess the directionality of neural information flow (NIF) between the CA3 and CA1 regions. The levels of acetylcholine (ACh) and its esterolytic protease, acetylcholinesterase (AChE), were detected in the hippocampus (HPC) following the behavioral test. The values of phase synchronization between the CA3 and CA1 regions in delta, low theta, and high theta oscillations were reduced significantly in the melamine-treated group. Moreover, the coupling directional index and the strength of CA3 driving CA1 were critically decreased in the above three frequency bands as well. Meanwhile, a reduction in ACh expression and an enhancement in AChE activity were found in the HPC of melamine-treated rats. Intrahippocampal infusion with ACh could mitigate the weakened neural coupling and directional NIF in parallel with spatial learning improvements. However, infusion of scopolamine, an acetylcholine receptor antagonist, could block the mitigative effects of ACh treatment in melamine rats. These findings provide first evidence that ACh-mediated neuronal coupling and NIF in the CA3-CA1 pathway are involved in spatial learning deficits induced by chronic melamine exposure.
ESTHER : Sun_2021_Front.Behav.Neurosci_15_594907
PubMedSearch : Sun_2021_Front.Behav.Neurosci_15_594907
PubMedID: 33679339

Title : Nomenclature, Chemical Abstracts Service Numbers, Isomer Enumeration, Ring Strain, and Stereochemistry: What Does Any of This Have to Do with an International Chemical Disarmament and Nonproliferation Treaty? -
Author(s) : Pontes , Schneider J , Brud P , Benderitter L , Fourie B , Tang C , Timperley CM , Forman JE
Ref : Journal of Chemical Education , 97 :1715 , 2020
PubMedID:

Title : The Comparative Efficacy of Multiple Interventions for Mild Cognitive Impairment in Alzheimer's Disease: A Bayesian Network Meta-Analysis - Lai_2020_Front.Aging.Neurosci_12_121
Author(s) : Lai X , Wen H , Li Y , Lu L , Tang C
Ref : Front Aging Neurosci , 12 :121 , 2020
Abstract : Background: Mild cognitive impairment (MCI) is the early phase of Alzheimer's disease (AD). The aim of early intervention for MCI is to decrease the rate of conversion from MCI to AD. However, the efficacy of multiple interventions in MCI, and the optimal methods of delivery, remain controversial. We aimed to compare and rank the treatment methods for MCI in AD, in order to find an optimal intervention for MCI and a way to prevent or delay the occurrence of AD. Methods: Pair-wise and network meta-analysis were conducted to integrate the treatment effectiveness through direct and indirect evidence. Four English databases and three Chinese databases were searched for international registers of eligible published, single or double blind, randomized controlled trials up to September 31st 2019. We included nine comparative interventions: pharmacological therapies which incorporated cholinesterase inhibitors (ChEI), ginkgo, nimodipine, and Chinese medicine; non-pharmacological therapies comprising of acupuncture, music therapy, exercise therapy, and nutrition therapy; and a placebo group. The primary outcome was the Mini-Mental State Examination (MMSE) score. The secondary outcome was the AD Assessment Scale-cognitive subscale (ADAS-cog). Results: Twenty-eight trials were eligible, including 6,863 participants. In the direct meta-analysis, as for the Mini-Mental State Examination scale, the ChEIs (MD: -0.38; 95% CI: -0.74, -0.01), Chinese medicine (MD: -0.31; 95% CI: -0.75, 0.13), exercise therapy (MD: -0.50; 95% CI: -0.65, -0.35), music therapy (MD: -1.71; 95% CI: -4.49, 1.07), were statistically more efficient than placebo. For AD Assessment Scalecognitive subscale outcome, ChEIs (MD: 1.20; 95% CI: 0.73, 1.68), Acupuncture (MD: 1.36; 95% CI: 1.28, 1.44), Chinese medicine (MD: 0.61; 95% CI: 0.49, 0.73) and exercise (MD: 0.61; 95% CI: 0.49, 0.73) were better than placebo. In the network meta-analysis, the MMSE outcome ranked music therapy (59%) as the best and Acupuncture (26%) as second. Nutrition and Ginkgo treatment had the lowest rank among all interventions. For ADAS-cog outcome, acupuncture (52) ranked the best. Conclusion: Among the nine treatments studied, music therapy appears to be the best treatment for MCI, followed by acupuncture. Our study provides new insights into potential clinical treatments for MCI due to AD, and may aid the development of guidelines for MCI in AD.
ESTHER : Lai_2020_Front.Aging.Neurosci_12_121
PubMedSearch : Lai_2020_Front.Aging.Neurosci_12_121
PubMedID: 32581760

Title : Silencing of soluble epoxide hydrolase 2 gene reduces H2O2-induced oxidative damage in rat intestinal epithelial IEC-6 cells via activating PI3K\/Akt\/GSK3beta signaling pathway - Li_2020_Cytotech__
Author(s) : Li J , Luo J , Zhang Y , Tang C , Wang J , Chen C
Ref : Cytotechnology , : , 2020
Abstract : Oxidative stress plays a vital role in the occurrence and development of intestinal injury. Soluble epoxide hydrolase 2 gene (EPHX2) is a class of hydrolytic enzymes. We aim to explore the effects and molecular mechanism of siEPHX2 on H2O2-induced oxidative damage in rat intestinal epithelial IEC-6 cells. IEC-6 cells were transfected with EPHX2-siRNA and control si RNA plasmids by lipofectamine 2000 transfection reagent. The transfected samples were treated with H2O2 (50, 100, 200, 300, 400, and 500 micromol/L) for 12, 24, and 48 h, respectively. Cell viability was determined by cell counting kit-8 (CCK-8). Lactate dehydrogenase (LDH), malondialdehyde (MDA), and superoxide dismutase (SOD) were assessed by respective detection kits. Mitochondrial membrane potential (MMP), cell apoptosis and reactive oxygen species (ROS) and the levels of factors were determined by flow cytometer, quantitative real-time PCR (qRT-PCR) and western blot assays, respectively. We found that the IC50 of H2O2 was 200 micromol/L at 24 h, and the transfection of siEHPX2 in H2O2-induced IEC-6 cells significantly promoted the cell viability, SOD activity and MMP rate, and reduced the rates of ROS and apoptosis as well as LDH and MDA contents. siEHPX2 up-regulated the B-cell lymphoma-2 (Bcl-2) level and down-regulated the levels of fibroblast-associated (Fas), Fas ligand (Fasl), Bcl-2 associated X protein (Bax), and Caspase-3. Moreover, the phosphorylation levels of phosphoinositide 3 kinase (PI3K), protein kinase B (Akt), and glycogen synthase kinase3beta (GSK3beta) were up-regulated. We proved that siEPHX2 had a protective effect on H2O2-induced oxidative damage in IEC-6 cells through activating PI3K/Akt/GSK3beta signaling pathway.
ESTHER : Li_2020_Cytotech__
PubMedSearch : Li_2020_Cytotech__
PubMedID: 31907700

Title : Lycodine-type alkaloids from Lycopodiastrum casuarinoides and their acetylcholinesterase inhibitory activity - Feng_2019_Fitoterapia__104378
Author(s) : Feng Z , Chen S , Wang W , Feng L , Dong Y , Zou Y , Ke C , Tang C , Yao S , Zhang H , Gan L , Ye Y , Lin L
Ref : Fitoterapia , :104378 , 2019
Abstract : Five previously undescribed lycodine-type alkaloids, named huperzine Y (1), 8,15-epoxy-N-demethylhuperzinine (2), 7-hydroxyl-huperzinine (3), huperzine Z (4), and huperzine D N-oxide (5), were isolated from the whole plants of Lycopodiastrum casuarinoides (Lycopodiaceae), along with ten known analogues. The structures of the new compounds were elucidated by means of spectroscopic technique (IR, UV, MS and NMR). The absolute configurations of the new compounds were established on the basis of comparison of their experimental and TD-DFT (time-dependent density functional theory) calculated ECD spectra. Moreover, all the isolates were evaluated for acetylcholinesterase (AChE) inhibitory activity. Only huperzine C showed moderate activity, with an IC50 value of 0.525+/-0.140muM, which was comparable with the positive control, huperzine A (IC50=0.143+/-0.029muM).
ESTHER : Feng_2019_Fitoterapia__104378
PubMedSearch : Feng_2019_Fitoterapia__104378
PubMedID: 31676395

Title : Different durations of cognitive stimulation therapy for Alzheimer's disease: a systematic review and meta-analysis - Chen_2019_Clin.Interv.Aging_14_1243
Author(s) : Chen J , Duan Y , Li H , Lu L , Liu J , Tang C
Ref : Clin Interv Aging , 14 :1243 , 2019
Abstract : Objective: We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to evaluate the efficacy of cognitive stimulation therapy (CST) of different durations for Alzheimer's disease (AD). Methods: A comprehensive search was carried out in three databases. The primary outcome was Mini-Mental State Examination (MMSE) score. We conducted a meta-analysis with Review Manager, version 5.3 and assessed the methodological quality of the included studies using the Cochrane Collaboration Recommendations assessment tool. Results: Treatment effects from the meta-analysis showed that CST plus acetylcholinesterase inhibitors (ChEIs) was better than the control assessed by MMSE. In addition, the meta-analysis indicated that long-term CST was better than short-term or maintenance CST. Conclusion: Our study confirmed that the combination of CST and drug treatment for AD is effective in AD, regardless of whether short-term CST, maintenance CST, or long-term CST is used. The long-term CST appears to be more effective.
ESTHER : Chen_2019_Clin.Interv.Aging_14_1243
PubMedSearch : Chen_2019_Clin.Interv.Aging_14_1243
PubMedID: 31371930

Title : Psychosocial interventions for Alzheimer's disease cognitive symptoms: a Bayesian network meta-analysis - Duan_2018_BMC.Geriatr_18_175
Author(s) : Duan Y , Lu L , Chen J , Wu C , Liang J , Zheng Y , Wu J , Rong P , Tang C
Ref : BMC Geriatr , 18 :175 , 2018
Abstract : BACKGROUND: Alzheimer disease (AD) is the most common type of dementia with cognitive decline as one of the core symptoms in older adults. Numerous studies have suggested the value of psychosocial interventions to improve cognition in this population, but which one should be preferred are still matters of controversy. Consequently, we aim to compare and rank different psychosocial interventions in the management of mild to moderate AD with cognitive symptoms. METHODS: We did a network meta-analysis to identify both direct and indirect evidence in relevant studies. We searched MEDLINE, EMBASE, PsycINFO through the OVID database, CENTRAL through the Cochrane Library for clinical randomized controlled trials investigating psychosocial interventions of cognitive symptoms in patients with Alzheimer disease, published up to August 31, 2017. We included trials of home-based exercise(HE), group exercise(GE), walking program(WP), reminiscence therapy(RT), art therapy(AT) or the combination of psychosocial interventions and acetylcholinesterase inhibitor (ChEIs). We extracted the relevant information from these trials with a predefined data extraction sheet and assessed the risk of bias with the Cochrane risk of bias tool. The outcomes investigated were Mini-Mental State Examination (MMSE) and compliance. We did a pair-wise meta-analysis using the fixed-effects model and then did a random-effects network meta-analysis within a Bayesian framework. RESULTS: We deemed 10 trials eligible, including 682 patients and 11 treatments. The quality of included study was rated as low in most comparison with Cochrane tools. Treatment effects from the network meta-analysis showed WP was better than control (SMD 4.89, 95% CI -0.07 to 10.00) while cognitive training and acetylcholinesterase inhibitor (CT + ChEIs) was significantly better than the other treatments, when compared with simple ChEIs treatment, assessed by MMSE. In terms of compliance, the pair-wise meta-analysis indicated that WP and HE are better than GE and AT, while CT + ChEIs, CST + ChEIs are better than other combined interventions. CONCLUSION: Our study confirmed the effectiveness of psychosocial interventions for improving cognition or slowing down the progression of cognitive impairment in AD patients and recommended several interventions for clinical practice.
ESTHER : Duan_2018_BMC.Geriatr_18_175
PubMedSearch : Duan_2018_BMC.Geriatr_18_175
PubMedID: 30086714

Title : Stereoselective Hydrolysis of Epoxides by reVrEH3, a Novel Vigna radiata Epoxide Hydrolase with High Enantioselectivity or High and Complementary Regioselectivity - Hu_2017_J.Agric.Food.Chem_65_9861
Author(s) : Hu D , Tang C , Li C , Kan T , Shi X , Feng L , Wu M
Ref : Journal of Agricultural and Food Chemistry , 65 :9861 , 2017
Abstract : To provide more options for the stereoselective hydrolysis of epoxides, an epoxide hydrolase (VrEH3) gene from Vigna radiata was cloned and expressed in Escherichia coli. Recombinant VrEH3 displayed the maximum activity at pH 7.0 and 45 degrees C and high stability at pH 4.5-7.5 and 55 degrees C. Notably, reVrEH3 exhibited high and complementary regioselectivity toward styrene oxides 1a-3a and high enantioselectivity (E = 48.7) toward o-cresyl glycidyl ether 9a. To elucidate these interesting phenomena, the interactions of the three-dimensional structure between VrEH3 and enantiomers of 1a and 9a were analyzed by molecular docking simulation. Using E. coli/vreh3 whole cells, gram-scale preparations of (R)-1b and (R)-9a were performed by enantioconvergent hydrolysis of 100 mM rac-1a and kinetic resolution of 200 mM rac-9a in the buffer-free water system at 25 degrees C. These afforded (R)-1b with >99% eep and 78.7% overall yield after recrystallization and (R)-9a with >99% ees, 38.7% overall yield, and 12.7 g/L/h space-time yield.
ESTHER : Hu_2017_J.Agric.Food.Chem_65_9861
PubMedSearch : Hu_2017_J.Agric.Food.Chem_65_9861
PubMedID: 29058432
Gene_locus related to this paper: vigra-Vreh3

Title : Concentration-response relationship of the alpha7 nicotinic acetylcholine receptor agonist FRM-17874 across multiple in vitro and in vivo assays - Stoiljkovic_2015_Biochem.Pharmacol_97(4)_576
Author(s) : Stoiljkovic M , Leventhal L , Chen A , Chen T , Driscoll R , Flood D , Hodgdon H , Hurst R , Nagy D , Piser T , Tang C , Townsend M , Tu Z , Bertrand D , Koenig G , Hajos M
Ref : Biochemical Pharmacology , 97 :576 , 2015
Abstract : Pharmacological activation of alpha7 nicotinic acetylcholine receptors (alpha7 nAChRs) may improve cognition in schizophrenia and Alzheimer's disease. The present studies describe an integrated pharmacological analysis of the effects of FRM-17874, an analogue of encenicline, on alpha7 nAChRs in vitro and in behavioral and neurophysiological assays relevant to cognitive function. FRM-17874 demonstrated high affinity binding to human alpha7 nAChRs, displacing [(3)H]-methyllacaconitine (Ki=4.3nM). In Xenopus laevis oocytes expressing human alpha7 nAChRs, FRM-17874 acted as an agonist, evoking inward currents with an EC50 of 0.42muM. Lower concentrations of FRM-17874 (0.01-3nM) elicited no detectable current, but primed receptors to respond to sub-maximal concentrations of acetylcholine. FRM-17874 improved novel object recognition in rats, and enhanced memory acquisition and reversal learning in the mouse water T-maze. Neurophysiological correlates of cognitive effects of drug treatment, such as synaptic transmission, long-term potentiation, and hippocampal theta oscillation were also evaluated. Modulation of synaptic transmission and plasticity was observed in rat hippocampal slices at concentrations of 3.2 and 5nM. FRM-17874 showed a dose-dependent facilitation of stimulation-induced hippocampal theta oscillation in mice and rats. The FRM-17874 unbound brain concentration-response relationship for increased theta oscillation power was similar in both species, exhibited a biphasic pattern peaking around 3nM, and overlapped with active doses and exposures observed in cognition assays. In summary, behavioral and neurophysiological assays indicate a bell-shaped effective concentration range and this report represents the first attempt to explain the concentration-response function of alpha7 nAChR-mediated pro-cognitive effects in terms of receptor pharmacology.
ESTHER : Stoiljkovic_2015_Biochem.Pharmacol_97(4)_576
PubMedSearch : Stoiljkovic_2015_Biochem.Pharmacol_97(4)_576
PubMedID: 26206187

Title : Design, synthesis and biological evaluation of hetero-aromatic moieties substituted pyrrole-2-carbonitrile derivatives as dipeptidyl peptidase IV inhibitors - Ji_2014_Eur.J.Med.Chem_75C_111
Author(s) : Ji X , Su M , Wang J , Deng G , Deng S , Li Z , Tang C , Li J , Zhao L , Jiang H , Liu H
Ref : Eur Journal of Medicinal Chemistry , 75C :111 , 2014
Abstract : A series of novel hetero-aromatic moieties substituted alpha-amino pyrrole-2-carbonitrile derivatives was designed and synthesized based on structure-activity relationships (SARs) of pyrrole-2-carbonitrile inhibitors. All compounds demonstrated good dipeptidyl peptidase IV (DPP4) inhibitory activities (IC50 = 0.004-113.6 muM). Moreover, compounds 6h (IC50 = 0.004 muM) and 6n (IC50 = 0.01 muM) showed excellent inhibitory activities against DPP4, good selectivity (compound 6h, selective ratio: DPP8/DPP4 = 450.0; DPP9/DPP4 = 375.0; compound 6n, selective ratio: DPP8/DPP4 = 470.0; DPP9/DPP4 = 750.0) and good efficacy in an oral glucose tolerance test in ICR mice. Furthermore, compounds 6h and 6n demonstrated moderate PK properties (compound 6h, F% = 37.8%, t1/2 = 1.45 h; compound 6n, F% = 16.8%, t1/2 = 3.64 h).
ESTHER : Ji_2014_Eur.J.Med.Chem_75C_111
PubMedSearch : Ji_2014_Eur.J.Med.Chem_75C_111
PubMedID: 24531224

Title : The evolution and pathogenic mechanisms of the rice sheath blight pathogen - Zheng_2013_Nat.Commun_4_1424
Author(s) : Zheng A , Lin R , Zhang D , Qin P , Xu L , Ai P , Ding L , Wang Y , Chen Y , Liu Y , Sun Z , Feng H , Liang X , Fu R , Tang C , Li Q , Zhang J , Xie Z , Deng Q , Li S , Wang S , Zhu J , Wang L , Liu H , Li P
Ref : Nat Commun , 4 :1424 , 2013
Abstract : Rhizoctonia solani is a major fungal pathogen of rice (Oryza sativa L.) that causes great yield losses in all rice-growing regions of the world. Here we report the draft genome sequence of the rice sheath blight disease pathogen, R. solani AG1 IA, assembled using next-generation Illumina Genome Analyser sequencing technologies. The genome encodes a large and diverse set of secreted proteins, enzymes of primary and secondary metabolism, carbohydrate-active enzymes, and transporters, which probably reflect an exclusive necrotrophic lifestyle. We find few repetitive elements, a closer relationship to Agaricomycotina among Basidiomycetes, and expand protein domains and families. Among the 25 candidate pathogen effectors identified according to their functionality and evolution, we validate 3 that trigger crop defence responses; hence we reveal the exclusive expression patterns of the pathogenic determinants during host infection.
ESTHER : Zheng_2013_Nat.Commun_4_1424
PubMedSearch : Zheng_2013_Nat.Commun_4_1424
PubMedID: 23361014
Gene_locus related to this paper: thaca-l8wvp3 , thaca-l8wv47 , thaca-l8wp17 , thaca-l8x532

Title : Prognostic value of serum cholinesterase activities in sepsis patients - Feng_2013_Hepatogastroenterology_60_
Author(s) : Feng W , Tang C , Guo H , Bao Y , Wen X , Xue T , Gong H
Ref : Hepato-Gastroenterology , 60 : , 2013
Abstract : Background/Aims: This study aims to explore the prognostic value of Serum cholinesterase (SchE) activity in patients with sepsis. Methodology: The evaluation variable of APACHE II score was assessed and the SchE concentrations were determined in 359 patients immediately upon admission and 24 hours after admission. All patients were divided into two groups based on their prognosis. The relationships of SchE concentration and APACHE II score with prognosis were analyzed. Results: The SchE activity was significantly higher (p <0.01) and the APACHE II score was significantly lower (p <0.01) in survivors than in non-survivors. The areas under the receiver operating characteristic curve (AUC) were more than 0.9 for both the loss of SchE activity (delta SchE) and the loss of APACHE II score (delta APACHE II) during 24 h in patients admitted 24 h after onset (D1). The AUC for SchE activity and APACHE II were similar in most groups except hepatobiliary infection group. Conclusions: The SchE activity and APACHE II score were useful for prognosis of septic patients. Although SchE activity was not as powerful as APACHE II in the prognosis of sepsis, dynamic monitoring of SchE and APACHE II had similar value in outcome prediction.
ESTHER : Feng_2013_Hepatogastroenterology_60_
PubMedSearch : Feng_2013_Hepatogastroenterology_60_
PubMedID: 23719062

Title : Auxin modulates the enhanced development of root hairs in Arabidopsis thaliana (L.) Heynh. under elevated CO(2) - Niu_2011_Plant.Cell.Environ_34_1304
Author(s) : Niu Y , Jin C , Jin G , Zhou Q , Lin X , Tang C , Zhang Y
Ref : Plant Cell Environ , 34 :1304 , 2011
Abstract : Root hairs may play a critical role in nutrient acquisition of plants grown under elevated CO(2) . This study investigated how elevated CO(2) enhanced the development of root hairs in Arabidopsis thaliana (L.) Heynh. The plants under elevated CO(2) (800 microL L(-1)) had denser and longer root hairs, and more H-positioned cells in root epidermis than those under ambient CO(2) (350 microL L(-1)). The elevated CO(2) increased auxin production in roots. Under elevated CO(2) , application of either 1-naphthoxyacetic acid (1-NOA) or N-1-naphthylphthalamic acid (NPA) blocked the enhanced development of root hairs. The opposite was true when the plants under ambient CO(2) were treated with 1-naphthylacetic acid (NAA), an auxin analogue. Furthermore, the elevated CO(2) did not enhance the development of root hairs in auxin-response mutants, axr1-3, and auxin-transporter mutants, axr4-1, aux1-7 and pin1-1. Both elevated CO(2) and NAA application increased expressions of caprice, triptychon and rho-related protein from plants 2, and decreased expressions of werewolf, GLABRA2, GLABRA3 and the transparent testa glabra 1, genes related to root-hair development, while 1-NOA and NPA application had an opposite effect. Our study suggests that elevated CO(2) enhanced the development of root hairs in Arabidopsis via the well-characterized auxin signalling and transport that modulate the initiation of root hairs and the expression of its specific genes.
ESTHER : Niu_2011_Plant.Cell.Environ_34_1304
PubMedSearch : Niu_2011_Plant.Cell.Environ_34_1304
PubMedID: 21477123

Title : Effects of the muscarinic agonist oxotremorine on membrane fluidity in rat lymphocytes - Tang_1993_Biochem.Mol.Biol.Int_29_1047
Author(s) : Tang C , Castoldi AF , Costa LG
Ref : Biochemistry & Molecular Biology International , 29 :1047 , 1993
Abstract : The muscarinic agonist oxotremorine produced a concentration-dependent increase in membrane fluidity in intact viable rat splenic lymphocytes in vitro. This effect was antagonized by atropine, but only at high concentrations (1 mM), while scopolamine was ineffective. Two other muscarinic agonists, carbachol and pilocarpine, did not affect membrane fluidity in lymphocytes. The fluidizing effect of oxotremorine occurred at both 10 and 37 degrees C with a similar time-course. Oxotremorine also increased membrane fluidity in liposomes of DMPC in gel phase, although its effect was less pronounced than in lymphocytes. The data suggest that the fluidization caused by oxotremorine is primarily nonreceptor-mediated and associated with a nonspecific physicochemical effect.
ESTHER : Tang_1993_Biochem.Mol.Biol.Int_29_1047
PubMedSearch : Tang_1993_Biochem.Mol.Biol.Int_29_1047
PubMedID: 8330013

Title : Granulocyte-macrophage colony-stimulating factor\/interleukin-3 fusion protein (pIXY 321) enhances high-dose Ara-C-induced programmed cell death or apoptosis in human myeloid leukemia cells - Bhalla_1992_Blood_80_2883
Author(s) : Bhalla K , Tang C , Ibrado AM , Grant S , Tourkina E , Holladay C , Hughes M , Mahoney ME , Huang Y
Ref : Blood , 80 :2883 , 1992
Abstract : High dose Ara-C (HIDAC) induces programmed cell death (PCD) or apoptosis in vitro in human myeloid leukemia cells, which correlates with the inhibition of their clonogenic survival. Hematopoietic growth factors (HGFs) granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-3 (IL-3) have been demonstrated to enhance the metabolism and cytotoxic effects of HIDAC against leukemic progenitor cells. We examined the effect of pIXY 321 (a GM-CSF/IL-3 fusion protein) on HIDAC-induced PCD and related gene expressions as well as HIDAC-mediated colony growth inhibition of human myeloid leukemia cells. Unlike the previously described effects of HGFs on normal bone marrow progenitor cells, exposure to pIXY 321 alone for up to 24 hours did not suppress PCD in HL-60 or KG-1 cells. However, exposure to pIXY 321 for 20 hours followed by a combined treatment with Ara-C plus pIXY 321 for 4 or 24 hours versus treatment with Ara-C alone significantly enhanced the oligonucleosomal DNA fragmentation characteristic of PCD. This was temporally associated with a marked induction of c-jun expression and a significant decrease in BCL-2. In addition, the treatment with pIXY 321 plus HIDAC versus HIDAC alone produced a significantly greater inhibition of HL-60 colony growth. These findings highlight an additional mechanism of HIDAC-induced leukemic cell death that is augmented by cotreatment with pIXY 321 and may contribute toward an improved antileukemic activity of HIDAC.
ESTHER : Bhalla_1992_Blood_80_2883
PubMedSearch : Bhalla_1992_Blood_80_2883
PubMedID: 1450413