Qiu Y

References (22)

Title : A Multifunctional (-)-Meptazinol-Serotonin Hybrid Ameliorates Oxidative Stress-Associated Apoptotic Neuronal Death and Memory Deficits via Activating the Nrf2\/Antioxidant Enzyme Pathway - Zhao_2023_Oxid.Med.Cell.Longev_2023_6935947
Author(s) : Zhao F , Zhao L , Zhou Y , Tan X , Yang Y , Ni W , Zheng W , Chen H , Qiu Y , Li J
Ref : Oxid Med Cell Longev , 2023 :6935947 , 2023
Abstract : The pathogenesis of Alzheimer's disease (AD) involves multiple pathophysiological processes. Oxidative stress is a major cause of AD-associated neuronal injury. The current research was designed to examine whether a novel (-)-meptazinol-serotonin hybrid (Mep-S) with potent antioxidant activity and additional inhibitory properties for acetylcholinesterase (AChE) activity could attenuate oxidative neuronal damage and cognitive deficits. In human SH-SY5Y cells, Mep-S suppressed H(2)O(2)-induced apoptosis by restoring mitochondrial membrane potential and inhibiting caspase-3 activation. Meanwhile, it attenuated oxidative stress elicited by H(2)O(2) through lessening generation of reactive oxygen species as well as enhancing production of glutathione (GSH) and activity of superoxide dismutase (SOD). Mechanistically, Mep-S promoted nuclear translocation of a transcription factor nuclear factor E2-related factor-2 (Nrf2) in H(2)O(2)-challenged cells. This effect was accompanied by reduction in Kelch-like ECH-associated protein-1 (Keap1) levels as well as augmentation of Akt phosphorylation and expression of heme oxygenase-1 (HO-1) and NAD(P)H quinine oxidoreductase-1 (NQO-1). Molecular docking analysis revealed that Mep-S may disrupt the protein-protein interactions between Keap1 and Nrf2. In an in vivo mouse model, Mep-S attenuated scopolamine-caused cognitive deficits with inhibition of apoptotic neuronal death and brain AChE activity. Furthermore, the scopolamine-induced impairment of total antioxidant capacity and reduction in SOD1, SOD2, and gamma-glutamate-cysteine ligase expression in the brain were counteracted by Mep-S, accompanied by decreased Keap1 levels, increased Akt catalytic subunit and Nrf2 phosphorylation, and decreased Nrf2, HO-1, and NQO-1 expression. Collectively, our results suggest that Mep-S ameliorates apoptotic neuronal death and memory dysfunction associated with oxidative stress by regulating the Nrf2/antioxidant enzyme pathway through inactivating Keap1 and phosphorylating Nrf2 via Akt activation. Therefore, Mep-S may be a potential lead for multitarget neuroprotective agents to treat AD-like symptoms.
ESTHER : Zhao_2023_Oxid.Med.Cell.Longev_2023_6935947
PubMedSearch : Zhao_2023_Oxid.Med.Cell.Longev_2023_6935947
PubMedID: 36819782

Title : High Expression of ACOT2 Predicts Worse Overall Survival and Abnormal Lipid Metabolism: A Potential Target for Acute Myeloid Leukemia - Yin_2022_J.Healthc.Eng_2022_2669114
Author(s) : Yin X , Lyu C , Li Z , Wang Q , Ding Y , Wang Y , Qiu Y , Cui S , Guo D , Xu R
Ref : J Healthc Eng , 2022 :2669114 , 2022
Abstract : Acyl-CoA thioesterase (ACOT) plays a considerable role in lipid metabolism, which is closely related to the occurrence and development of cancer, nevertheless, its role has not been fully elucidated in acute myeloid leukemia (AML). To explore the role of ACOT2 in AML and to provide a potential therapeutic target for AML, the expression pattern of ACOT was investigated based on the TNMplot, Gene Expression Profiling Interactive Analysis (GEPIA), and Cancer Cell Line Encyclopedia (CCLE) database, and diagnostic value, prognostic value, and clinical phenotype of ACOT were explored based on data from The Cancer Genome Atlas (TCGA). Functional annotation and enrichment analysis of the common targets between ACOT2 coexpressed and AML-related genes were further performed by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Enrichment Analysis (GSEA) analyses. The protein-protein interaction (PPI) network of ACOT2 coexpressed genes and functional ACOT2-related metabolites association network were constructed based on GeneMANIA and Human Metabolome Database. Among ACOTs, ACOT2 was highly expressed in AML compared to normal control subjects according to TNMplot, GEPIA, and CCLE database, which was significantly associated with poor overall survival (OS) in AML (P=0.003). Moreover, ACOT2 exhibited excellent diagnostic efficiency for AML (AUC: 1.000) and related to French-American-British (FAB) classification and cytogenetics. GO, KEGG, and GSEA analyses of 71 common targets between ACOT2 coexpressed and AML-related genes revealed that ACOT2 is closely related to ACOT1, ACOT4, enoyl-acyl carrier protein reductase, mitochondrial (MECR), puromycin-sensitive aminopeptidase (NPEPPS), SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily B member 1 (SMARCB1), and long-chain fatty acid-CoA ligase 1 (ACSL1) in PPI network, and plays a significant role in lipid metabolism, that is, involved in fatty acid elongation and biosynthesis of unsaturated fatty acids. Collectively, the increase of ACOT2 may be an important characteristic of worse OS and abnormal lipid metabolism, suggesting that ACOT2 may become a potential therapeutic target for AML.
ESTHER : Yin_2022_J.Healthc.Eng_2022_2669114
PubMedSearch : Yin_2022_J.Healthc.Eng_2022_2669114
PubMedID: 36193167

Title : The adverse effects of fluxapyroxad on the neurodevelopment of zebrafish embryos - Yu_2022_Chemosphere_307_135751
Author(s) : Yu H , Zhang J , Chen Y , Chen J , Qiu Y , Zhao Y , Li H , Xia S , Chen S , Zhu J
Ref : Chemosphere , 307 :135751 , 2022
Abstract : Fluxapyroxad (Flu), one of the succinate dehydrogenase-inhibited (SDHI) fungicides, has been extensively used in crop fungal disease control. Despite its increasing use in modern agriculture and long-term retention in the environment, the potentially toxic effects of Flu in vivo, especially on neurodevelopment, remain under-evaluated. In this study, zebrafish embryos were exposed to Flu at concentrations of 0.5, 0.75, and 1 mg/L for 96 h to evaluate the neurotoxicity of Flu. The results showed that Flu caused concentration-dependent malformations, including shorter body length, smaller head and eyes, and yolk sac edema. After exposure to Flu, larval zebrafish exhibited severe motor aberrations. Flu at a concentration of 1 mg/L significantly decreased dopamine level and notably altered acetylcholinesterase (AChE) activity and acetylcholine (ACh) content. Abnormal central nervous system (CNS) neurogenesis and disordered motor neuron development were observed in Tg (HUC-GFP) and Tg (hb9-GFP) zebrafish in Flu-treated groups. The expression of key genes involved in neurotransmission and neurodevelopment further proved that Flu impaired the zebrafish nervous system. This work contributes to our understanding of the neurotoxic effects and mechanisms induced by Flu in zebrafish and may help us take precautions against the neurotoxicity of Flu.
ESTHER : Yu_2022_Chemosphere_307_135751
PubMedSearch : Yu_2022_Chemosphere_307_135751
PubMedID: 35863420

Title : A Novel Nomogram for Predicting Risk Factors and Outcomes in Bloodstream Infections Caused by Klebsiella pneumoniae - Chen_2022_Infect.Drug.Resist_15_1317
Author(s) : Chen Y , Ying S , Jiang L , Dong S , Dai J , Jin X , Yu W , Qiu Y
Ref : Infect Drug Resist , 15 :1317 , 2022
Abstract : BACKGROUND: Our study aimed to explore the risk factors in bloodstream infections Klebsiella pneumoniae (BSI-KP) patients and establish nomograms to predict the probability of BSI-CRKP and the prognosis of BSI-KP. METHODS: A total of 252 BSI-KP patients were enrolled from a tertiary teaching hospital between January 1, 2015, and May 31, 2020. Risk factors associated with BSI-CRKP and factors associated with the 30-day mortality were identified using LASSO analysis, univariate and multivariate analysis. RESULTS: There were 121 (48.0%) patients with carbapenem-resistant K. pneumoniae (CRKP) and 131 (52.0%) patients with carbapenem-susceptible K. pneumoniae (CSKP). The multivariate logistic regression analysis demonstrated that gastric tube indwelling before BSI (OR=2.442, P=0.043) and more types of antibiotics use before BSI (OR=1.305, P=0.009) were independent risk factors for BSI-CRKP. And previous transplantations, prior ICU stay, gastric tube indwelling before BSI, more types of antibiotics use before BSI, lower Hb and cholinesterase were associated with CRKP-BSI. The C-index of models indicated its good accuracy (C-index 0.816, 95% CI 0.763-0.868). In patients with BSI-CRKP, further logistic regression analysis revealed urinary catheterization (OR=0.298, P=0.017) was found to be an independent risk factor for 30-day mortality, while ceftazidime/avibactam use (OR=8.438, P=0.003) was an independent favorable prognostic factor. The nomogram predicated CRKP, ICU hospitalization, more types of antibiotics use, tigecycline, PLT, urinary catheterization were associated with 30-day mortality in patients with BSI-KP. The discriminative ability of the predictive model, as assessed by C-index, was 0.813 (95% CI: 0.780-0.867). CONCLUSION: Previous transplantations, prior ICU stay, gastric tube indwelling before BSI, more types of antibiotics use before BSI, lower Hb and cholinesterase represent significant risk factors for the development of BSI-CRKP. Our nomogram predicated thrombocytopenia was a sign for poor prognosis. Tigecycline resulted in higher mortality for patients with BSI-KP. Rational use of nomograms may help clinicians make better Clinical decisions when treating BSI-KP patients.
ESTHER : Chen_2022_Infect.Drug.Resist_15_1317
PubMedSearch : Chen_2022_Infect.Drug.Resist_15_1317
PubMedID: 35378894

Title : Association between CES1 rs2244613 and the pharmacokinetics and safety of dabigatran: Meta-analysis and quantitative trait loci analysis - Li_2022_Front.Cardiovasc.Med_9_959916
Author(s) : Li H , Zhang Z , Weng H , Qiu Y , Zubiaur P , Zhang Y , Fan G , Yang P , Vuorinen AL , Zuo X , Zhai Z , Wang C
Ref : Front Cardiovasc Med , 9 :959916 , 2022
Abstract : OBJECTIVE: To date, the influence of the carboxylesterase 1 (CES1) rs2244613 genotype on the pharmacokinetics (PKs) and safety of dabigatran remains controversial. Hence, a systematic review was performed to study the association between CES1 rs2244613 genotype and the PKs and safety of dabigatran and CES1 relative expression. METHODS: In addition to the three English databases (Web of Science, PubMed, and Embase), two Chinese databases (CNKI and Wanfang) were thoroughly revised. The mean differences (MD) and corresponding 95% confidence intervals (CI) were applied to evaluate the differences in PKs between the CES1 rs2244613 genotype. Odds ratio (OR) was used to study the risk for bleeding events between the CES1 rs2244613 genotypes. Subsequent expression quantitative trait loci (eQTL) analyses were performed to evaluate genotype-specific expressions in human tissues. RESULTS: Ten studies (n = 2,777) were included. CES1 rs2244613 G allele carriers exhibited significantly lower dabigatran trough concentrations compared to T allele carriers (MD: -8.00 ng/mL; 95% CI: -15.08 to -0.92; p = 0.03). The risk for bleeding events was significantly lower in carriers of the G allele compared to T allele carriers (OR: 0.65; 95% CI: 0.44-0.96; p = 0.03). Subsequent eQTL analysis showed significant genome-wide expressions in two human tissues, whole blood (p = 5.1 x 10(-10)) and liver (p = 6.2 x 10(-43)). CONCLUSION: Our meta-analysis indicated a definite relation between the CES1 rs2244613 genotype and tolerability variations or pharmacokinetic fluctuations. The carriers of T allele showed higher dabigatran concentrations; therefore, they would benefit from a dose reduction. SYSTEMATIC REVIEW REGISTRATION: [https://inplasy.com/inplasy-2022-6-0027/], identifier [NPLASY202260027].
ESTHER : Li_2022_Front.Cardiovasc.Med_9_959916
PubMedSearch : Li_2022_Front.Cardiovasc.Med_9_959916
PubMedID: 35990949

Title : A Novel Multifunctional 5,6-Dimethoxy-Indanone-Chalcone-Carbamate Hybrids Alleviates Cognitive Decline in Alzheimer's Disease by Dual Inhibition of Acetylcholinesterase and Inflammation - Liu_2022_Front.Aging.Neurosci_14_922650
Author(s) : Liu C , Sang Z , Pan H , Wu Q , Qiu Y , Shi J
Ref : Front Aging Neurosci , 14 :922650 , 2022
Abstract : BACKGROUNDS: Alzheimer's disease (AD) is a multifactorial neurodegenerative disease. The treatment of AD through multiple pathological targets may generate therapeutic efficacy better. The multifunctional molecules that simultaneously hit several pathological targets have been of great interest in the intervention of AD. METHODS: Here, we combined the chalcone scaffold with carbamate moiety and 5,6-dimethoxy-indanone moiety to generate a novel multi-target-directed ligand (MTDL) molecule (E)-3-((5,6-dimethoxy-1-oxo-1,3-dihydro-2H-inden-2-ylidene)-methyl)phenylethyl(methyl) carbamate (named AP5). In silico approaches were used to virtually predict the binding interaction of AP5 with AChE, the drug-likeness, and BBB penetrance, and later validated by evaluation of pharmacokinetics (PK) in vivo by LC-MS/MS. Moreover, studies were conducted to examine the potential of AP5 for inhibiting AChE and AChE-induced amyloid-beta (Abeta) aggregation, attenuating neuroinflammation, and providing neuroprotection in the APP/PS1 model of AD. RESULTS: We found that AP5 can simultaneously bind to the peripheral and catalytic sites of AChE by molecular docking. AP5 exhibited desirable pharmacokinetic (PK) characteristics including oral bioavailability (67.2%), >10% brain penetrance, and favorable drug-likeness. AP5 inhibited AChE activity and AChE-induced Abeta aggregation in vivo and in vitro. Further, AP5 lowered Abeta plaque deposition and insoluble Abeta levels in APP/PS1 mice. Moreover, AP5 exerted anti-inflammatory responses by switching microglia to a disease-associated microglia (DAM) phenotype and preventing A1 astrocytes formation. The phagocytic activity of microglial cells to Abeta was recovered upon AP5 treatment. Importantly, chronic AP5 treatment significantly prevented neuronal and synaptic damage and memory deficits in AD mice. CONCLUSION: Together, our work demonstrated that AP5 inhibited the AChE activity, decreased Abeta plaque deposition by interfering Abeta aggregation and promoting microglial Abeta phagocytosis, and suppressed inflammation, thereby rescuing neuronal and synaptic damage and relieving cognitive decline. Thus, AP5 can be a new promising candidate for the treatment of AD.
ESTHER : Liu_2022_Front.Aging.Neurosci_14_922650
PubMedSearch : Liu_2022_Front.Aging.Neurosci_14_922650
PubMedID: 35860673

Title : Supplemental Choline Modulates Growth Performance and Gut Inflammation by Altering the Gut Microbiota and Lipid Metabolism in Weaned Piglets - Qiu_2021_J.Nutr_151_20
Author(s) : Qiu Y , Liu S , Hou L , Li K , Wang L , Gao K , Yang X , Jiang Z
Ref : J Nutr , 151 :20 , 2021
Abstract : BACKGROUND: Whether dietary choline and bile acids affect lipid use via gut microbiota is unclear. OBJECTIVES: This study aimed to investigate the effect of choline and bile acids on growth performance, lipid use, intestinal immunology, gut microbiota, and bacterial metabolites in weaned piglets. METHODS: A total of 128 weaned piglets [Duroc x (Landrace x Yorkshire), 21-d-old, 8.21 +/- 0.20 kg body weight (BW)] were randomly allocated to 4 treatments (8 replicate pens per treatment, each pen containing 2 males and 2 females; n = 32 per treatment) for 28 d. Piglets were fed a control diet (CON) or the CON diet supplemented with 597 mg choline/kg (C), 500 mg bile acids/kg (BA) or both (C + BA) in a 2 x 2 factorial design. Growth performance, intestinal function, gut microbiota, and metabolites were determined. RESULTS: Compared with diets without choline, choline supplementation increased BW gain (6.13%), average daily gain (9.45%), gain per feed (8.18%), jejunal lipase activity (60.2%), and duodenal IL10 gene expression (51%), and decreased the mRNA abundance of duodenal TNFA (TNFalpha) (40.7%) and jejunal toll-like receptor 4 (32.9%) (P < 0.05); additionally, choline increased colonic butyrate (29.1%) and the abundance of Lactobacillus (42.3%), while decreasing the bile acid profile (55.8% to 57.6%) and the abundance of Parabacteroides (75.8%), Bacteroides (80.7%), and unidentified-Ruminococcaceae (32.5%) (P >= 0.05). Compared with diets without BA, BA supplementation decreased the mRNA abundance of colonic TNFA (37.4%), NF-kappaB p65 (42.4%), and myeloid differentiation factor 88 (42.5%) (P >= 0.01); BA also increased colonic butyrate (20.9%) and the abundance of Lactobacillus (39.7%) and Faecalibacterium (71.6%) and decreased that of Parabacteroides (67.7%) (P < 0.05). CONCLUSIONS: Choline supplementation improved growth performance and prevented gut inflammation in weaned piglets by altering gut microbiota and lipid metabolism. BA supplementation suppressed intestinal inflammation with no effect on growth performance, which was associated with changed gut microbiota and metabolites.
ESTHER : Qiu_2021_J.Nutr_151_20
PubMedSearch : Qiu_2021_J.Nutr_151_20
PubMedID: 33245135

Title : Bile salt-dependent lipase promotes the barrier integrity of Caco-2 cells by activating Wnt\/beta-catenin signaling via LRP6 receptor - Qiu_2021_Cell.Tissue.Res_383_1077
Author(s) : Qiu Y , Zhou J , Zhang D , Song H , Qian L
Ref : Cell Tissue Research , 383 :1077 , 2021
Abstract : Bile salt-dependent lipase (BSDL) within intestinal lumen can be endocytosed by enterocytes and support the intestinal barrier function. However, the epithelial-supporting effect of this protein has not been verified in a human cell line and neither the direct signaling pathway nor the function of endocytosis in this process has been clearly identified. We sought to investigate the signaling pathway and the membrane receptor through which BSDL might exert these effects using intestinal epithelial cells. Caco-2 cells were treated with recombinant BSDL, and the barrier function, cell proliferation, and activation of the Wnt signaling pathway were assessed. The effect of Wnt signaling activation induced by BSDL and BSDL endocytosis was investigated in LRP6-silenced and non-silenced cells. Moreover, caveolae- and clathrin-dependent endocytosis inhibitors were also applied respectively to analyze their effects on Wnt signaling activation induced by BSDL. BSDL treatment increased the barrier function but not proliferation of Caco-2 cells. It also induced beta-catenin nuclear translocation and activated Wnt target gene transcription. Moreover, in the Wnt pathway, BSDL increased the levels of non-phosphorylated-beta-catenin (Ser33/37/Thr41) and phosphorylated-beta-catenin (Ser552). Notably, the silencing of LRP6 expression impaired BSDL endocytosis and decreased BSDL-induced beta-catenin nuclear translocation. The inhibition of BSDL endocytosis induced by caveolae-mediated endocytosis inhibitor was stronger than that by clathrin-mediated endocytosis inhibitor, and the Wnt signaling activation associated with its endocytosis was also most likely caveolae-dependent. Our findings suggested that LRP6, a canonical Wnt pathway co-receptor, can mediate BSDL endocytosis and then activate Wnt signaling in Caco-2 cells.
ESTHER : Qiu_2021_Cell.Tissue.Res_383_1077
PubMedSearch : Qiu_2021_Cell.Tissue.Res_383_1077
PubMedID: 33245415

Title : Effects of nucleo(s)tide analogs therapy on chronic hepatitis B as evaluated by hepatosplenic radionuclide angiography - Wang_2020_Nucl.Med.Commun__
Author(s) : Wang L , Wu Z , Wang A , Jin X , Qiu Y
Ref : Nucl Med Commun , : , 2020
Abstract : OBJECTIVES: Hepatosplenic radionuclide angiography is a relatively noninvasive method for evaluating hepatic portal perfusion. We used hepatosplenic radionuclide angiography to assess the effects of nucleo(s)tide analogs therapy on patients with chronic hepatitis B (CHB). PATIENTS AND METHODS: A retrospective analysis was performed on patients who underwent hepatosplenic radionuclide angiography from January 2012 to May 2017 at the First Affiliated Hospital, College of Medicine, Zhejiang University. The correlations between the results of routine laboratory tests and hepatic perfusion index (HPI) were evaluated. The Wilcoxon signed-rank test and one-way ANOVA of repeated measures were used to compare the HPIs of patients who received nucleo(s)tide analogs therapy. RESULTS: There is a positive correlation between HPI and cholinesterase and serum albumin (ALB) and a negative correlation between HPI and aspartate aminotransferase-to-platelet ratio index and bilirubin (TBiL). An improvement in HPI was observed in patients with an initial HPI <61% after nucleo(s)tide analogs therapy. CONCLUSIONS: Hepatosplenic radionuclide angiography can reflect the functional reserve of the liver and monitor liver fibrosis indirectly. It can also comprehensively assess the effects of antiviral therapy on patients with CHB, and antiviral therapy is critical for the treatment of hepatitis.
ESTHER : Wang_2020_Nucl.Med.Commun__
PubMedSearch : Wang_2020_Nucl.Med.Commun__
PubMedID: 31939901

Title : Carboxyl ester lipase is highly conserved in utilizing maternal supplied lipids during early development of zebrafish and human - Qiu_2020_Biochim.Biophys.Acta.Mol.Cell.Biol.Lipids__158663
Author(s) : Qiu Y , Sun S , Yu X , Zhou J , Cai W , Qian L
Ref : Biochimica & Biophysica Acta Molecular & Cellular Biology Lipids , :158663 , 2020
Abstract : Carboxyl ester lipase (Cel), is a lipolytic enzyme secreted by the pancreas, which hydrolyzes various species of lipids in the gut. Cel is also secreted by mammary gland during lactation and exists in breast milk. It facilitates dietary fat digestion and absorption, thus contributing to normal infant development. This study aimed to examine whether the Cel in zebrafish embryos has a similar role of maternal lipid utilization as in human infants, and how Cel contributes to the utilization of yolk lipids in zebrafish. The cel1 and cel2 genes were expressed ubiquitously in the blastodisc and yolk syncytial layer before 24 hpf, and in the exocrine pancreas after 72 hpf. The cel1 and cel2 morphants exhibited developmental retardation and yolk sac retention. The total cholesterol, cholesterol ester, free cholesterol, and triglyceride were reduced in the morphants' body while accumulated in the yolk (except triglyceride). The FFA content of whole embryos was much lower in morphants than in standard controls. Moreover, the delayed development in cel (cel1/cel2) double morphants was partially rescued by FFA and cholesterol supplementation. Delayed and weakened cholesterol ester transport to the brain and eyes was observed in cel morphants. Correspondingly, shrunken midbrain tectum, microphthalmia, pigmentation-delayed eyes as well as down-regulated Shh target genes were observed in the CNS of double morphants. Interestingly, cholesterol injections reversed these CNS alterations. Our findings suggested that cel genes participate in the lipid releasing from yolk sac to developing body, thereby contributing to the normal growth rate and CNS development in zebrafish.
ESTHER : Qiu_2020_Biochim.Biophys.Acta.Mol.Cell.Biol.Lipids__158663
PubMedSearch : Qiu_2020_Biochim.Biophys.Acta.Mol.Cell.Biol.Lipids__158663
PubMedID: 32061751

Title : Catalpol prevents denervated muscular atrophy related to the inhibition of autophagy and reduces BAX\/BCL2 ratio via mTOR pathway - Wang_2019_Drug.Des.Devel.Ther_13_243
Author(s) : Wang Y , Shao Y , Gao Y , Wan G , Wan D , Zhu H , Qiu Y , Ye X
Ref : Drug Des Devel Ther , 13 :243 , 2019
Abstract : Aim: To investigate the effects of catalpol on muscular atrophy induced by sciatic nerve crush injury (SNCI). Methods: Seventy male Kunming mice were randomized into five groups (n=10): model, sham, catalpol (Cat), rapamycin (Rapa), and catalpol+rapamycin (Rapa+Cat). The ratio of gastrocnemius muscle wet weight (right/left, R/L) between the operated leg (right) and the normal leg (left) was calculated, and acetylcholinesterase (AChE) immunohistochemistry assays were performed to observe the change of motor end plate (MEP), along with the sizes of denervated and innervated muscle fibers. The expression levels of LC3II, TUNEL, BAX/BCL-2, LC3II/LC3I and P62, Beclin1, mTOR, and p-mTOR (ser2448) proteins in muscle were examined by fluorescence immunohistochemistry or Western blotting. Results: Results show that catalpol improved the results of the grid walking tests by reducing the percentage of foot slips, which increased the gastrocnemius muscle wet weight (R/L), enhanced AChE expression at the MEP, and enlarged the section area of the muscle. The expression of LC3II and TUNEL was significantly inhibited by catalpol. The BAX/BCL-2 ratio was significantly increased in muscles of denervated and control groups. Lower LC3II/LC3I and BAX/BCL-2 ratios in denervated muscles were also detected after catalpol treatment. Conclusion: These results indicated that apoptosis and autophagy play a role in the regulation of denervation-induced muscle atrophy after SNCI, and catalpol alleviates muscle atrophy through the regulation of muscle apoptosis and autophagy via the mTOR signaling pathway.
ESTHER : Wang_2019_Drug.Des.Devel.Ther_13_243
PubMedSearch : Wang_2019_Drug.Des.Devel.Ther_13_243
PubMedID: 30643390

Title : The change of synovial fluid proteome in rabbit surgery-induced model of knee osteoarthritis - Luo_2018_Am.J.Transl.Res_10_2087
Author(s) : Luo Q , Qin X , Qiu Y , Hou L , Yang N
Ref : Am J Transl Res , 10 :2087 , 2018
Abstract : The aims of this study were to explore the change of synovial fluid (SF) proteome in a knee osteoarthritis (KOA) rabbit model, and to provide a new target for the treatment of knee osteoarthritis at the proteomic level. Sixteen New Zealand rabbits were randomly and equally divided into two groups. Group A rabbits were subjected to right anterior cruciate ligament transection (ACLT), while group B rabbits were subjected to sham ACLT. Six weeks later, the proteomes of knee joint SF from group A and B rabbits were analyzed using a label-free quantitative proteomic analysis method. We extracted 944 relevant items from GO BlastGO2 for the 23 proteins differentially expressed between the two groups. The final annotation results were 23 protein sequences annotated by 462 GO items. According to the KEGG gene database of rabbit protein sequences, as well as annotation of the KO numbers of homologous/similar proteins to the relevant 64 KEGG pathways, we extracted the sequences of 16 significantly differently expressed proteins among the relevant 64 KEGG messages/metabolism pathways. These included adiponectin, pyruvate kinase, bisphosphoglycerate mutase, HtpG/heat shock proteins, hemoglobin subunit alpha-1 2, VCP (CDC48), 14-3-3 protein beta/theta/zeta, and ferritin heavy chain, whose levels were decreased in group A. The other proteins were fibrinogen alpha/beta/gamma chain, carboxylesterase 2, paraoxonase/arylesterase 1, apolipoprotein A-I, immunoglobulin heavy chain, and transferrin, whose levels were increased in group B. The identified differentially expressed proteins indicate the change of SF proteomic expression in KOA and may provide protein targets for treating this condition.
ESTHER : Luo_2018_Am.J.Transl.Res_10_2087
PubMedSearch : Luo_2018_Am.J.Transl.Res_10_2087
PubMedID: 30093946

Title : Thiolation Protein-Based Transfer of Indolyl to a Ribosomally Synthesized Polythiazolyl Peptide Intermediate during the Biosynthesis of the Side-Ring System of Nosiheptide - Qiu_2017_J.Am.Chem.Soc_139_18186
Author(s) : Qiu Y , Du Y , Zhang F , Liao R , Zhou S , Peng C , Guo Y , Liu W
Ref : Journal of the American Chemical Society , 139 :18186 , 2017
Abstract : Nosiheptide, a potent bicyclic member of the family of thiopeptide antibiotics, possesses a distinctive l-Trp-derived indolyl moiety. The way in which this moiety is incorporated into a ribosomally synthesized and post-translationally modified thiopeptide remains poorly understood. Here, we report that NosK, an alpha/beta-hydrolase fold protein, mediates the transfer of indolyl from NosJ, a discrete thiolation protein, to a linear pentathiazolyl peptide intermediate rather than its genetically encoded untreated precursor. This intermediate results from enzymatic processing of the peptide precursor, in which five of the six l-Cys residues are transformed into thiazoles but Cys4 selectively remains unmodified for indolyl substitution via a thioester exchange. Determining the timing of indolyl incorporation, which expands the chemical space of a thiopeptide framework, facilitates mechanistic access to the unusual logic of post-translational modifications in the biosynthesis of nosiheptide-type thiopeptide members that share a similar compact side-ring system.
ESTHER : Qiu_2017_J.Am.Chem.Soc_139_18186
PubMedSearch : Qiu_2017_J.Am.Chem.Soc_139_18186
PubMedID: 29200275
Gene_locus related to this paper: stras-c6fx50

Title : Mudskipper genomes provide insights into the terrestrial adaptation of amphibious fishes - You_2014_Nat.Commun_5_5594
Author(s) : You X , Bian C , Zan Q , Xu X , Liu X , Chen J , Wang J , Qiu Y , Li W , Zhang X , Sun Y , Chen S , Hong W , Li Y , Cheng S , Fan G , Shi C , Liang J , Tom Tang Y , Yang C , Ruan Z , Bai J , Peng C , Mu Q , Lu J , Fan M , Yang S , Huang Z , Jiang X , Fang X , Zhang G , Zhang Y , Polgar G , Yu H , Li J , Liu Z , Ravi V , Coon SL , Yang H , Venkatesh B , Shi Q
Ref : Nat Commun , 5 :5594 , 2014
Abstract : Mudskippers are amphibious fishes that have developed morphological and physiological adaptations to match their unique lifestyles. Here we perform whole-genome sequencing of four representative mudskippers to elucidate the molecular mechanisms underlying these adaptations. We discover an expansion of innate immune system genes in the mudskippers that may provide defence against terrestrial pathogens. Several genes of the ammonia excretion pathway in the gills have experienced positive selection, suggesting their important roles in mudskippers' tolerance to environmental ammonia. Some vision-related genes are differentially lost or mutated, illustrating genomic changes associated with aerial vision. Transcriptomic analyses of mudskippers exposed to air highlight regulatory pathways that are up- or down-regulated in response to hypoxia. The present study provides a valuable resource for understanding the molecular mechanisms underlying water-to-land transition of vertebrates.
ESTHER : You_2014_Nat.Commun_5_5594
PubMedSearch : You_2014_Nat.Commun_5_5594
PubMedID: 25463417
Gene_locus related to this paper: 9gobi-a0a3b4bh68 , 9gobi-a0a3b4bmj6 , 9gobi-a0a3b4alj9 , 9gobi-a0a3b4biy6 , 9gobi-a0a3b4ah01 , 9gobi-a0a3b3z8m7 , 9gobi-a0a3b4aaj5 , 9gobi-a0a3b4b6y7

Title : The genome organization of Thermotoga maritima reflects its lifestyle - Latif_2013_PLoS.Genet_9_e1003485
Author(s) : Latif H , Lerman JA , Portnoy VA , Tarasova Y , Nagarajan H , Schrimpe-Rutledge AC , Smith RD , Adkins JN , Lee DH , Qiu Y , Zengler K
Ref : PLoS Genet , 9 :e1003485 , 2013
Abstract : The generation of genome-scale data is becoming more routine, yet the subsequent analysis of omics data remains a significant challenge. Here, an approach that integrates multiple omics datasets with bioinformatics tools was developed that produces a detailed annotation of several microbial genomic features. This methodology was used to characterize the genome of Thermotoga maritima--a phylogenetically deep-branching, hyperthermophilic bacterium. Experimental data were generated for whole-genome resequencing, transcription start site (TSS) determination, transcriptome profiling, and proteome profiling. These datasets, analyzed in combination with bioinformatics tools, served as a basis for the improvement of gene annotation, the elucidation of transcription units (TUs), the identification of putative non-coding RNAs (ncRNAs), and the determination of promoters and ribosome binding sites. This revealed many distinctive properties of the T. maritima genome organization relative to other bacteria. This genome has a high number of genes per TU (3.3), a paucity of putative ncRNAs (12), and few TUs with multiple TSSs (3.7%). Quantitative analysis of promoters and ribosome binding sites showed increased sequence conservation relative to other bacteria. The 5'UTRs follow an atypical bimodal length distribution comprised of "Short" 5'UTRs (11-17 nt) and "Common" 5'UTRs (26-32 nt). Transcriptional regulation is limited by a lack of intergenic space for the majority of TUs. Lastly, a high fraction of annotated genes are expressed independent of growth state and a linear correlation of mRNA/protein is observed (Pearson r = 0.63, p<2.2 x 10(-16) t-test). These distinctive properties are hypothesized to be a reflection of this organism's hyperthermophilic lifestyle and could yield novel insights into the evolutionary trajectory of microbial life on earth.
ESTHER : Latif_2013_PLoS.Genet_9_e1003485
PubMedSearch : Latif_2013_PLoS.Genet_9_e1003485
PubMedID: 23637642
Gene_locus related to this paper: thema-ESTA

Title : The clinical study of precise hemihepatectomy guided by middle hepatic vein - Qiu_2012_World.J.Surg_36_2428
Author(s) : Qiu Y , Zhu X , Zhu R , Zhou J , Zhou T , Wang Y , Ding Y
Ref : World J Surg , 36 :2428 , 2012
Abstract : OBJECTIVE This study was designed to analyze the feasibility of classification for hepatic veins preoperatively and to evaluate the safety and therapeutic efficacy of precise hemihepatectomy guided by middle hepatic vein METHODS Thirty patients who underwent precise hemihepatectomy PH group were subjected to multi-slice helical CT hepatic venography preoperatively to achieve Nakamura's and Kawasaki's classification of hepatic veins The hemihepatectomy was performed precisely by the guidance of middle hepatic vein which was revealed by the hepatic venography and confirmed with intraoperative ultrasound The clinical data of these patients were compared with other 38 traditional hemihepatectomy patients control group The amount of intraoperative bleeding and blood transfusion liver function recovery postoperative complications and 1-year follow-up data were compared between two groups RESULTS The ratios of Nakamura's classification type I II and III of hepatic veins were 56.7 17/30 26.7 8/30 and 16.7 5/30 respectively The percentages of Kawasaki's classification type I and II of hepatic veins were 36.7 11/30 and 63.3 19/30 respectively The total 30 cases of precise hemihepatectomies were performed successfully including 13 cases of right hemihepatectomy without MHV 15 cases of left hemihepatectomy without MHV 1 case of right hemihepatectomy with MHV and 1 case of left hemihepatectomy with MHV There was no significant difference in operation-related mortality the amount of intraoperative bleeding and blood transfusion as well as serum alanine aminotransferase total bilirubin and cholinesterase of the third postoperative day between the two groups However negative resection margin and albumin level were more favorable in precise hemihepatectomy group than control group In addition the incidence of postoperative pleural effusion and seroperitoneum was decreased significantly in precise hemihepatectomy group The 1-year tumor-free survival rate was 79 15/19 In PH group which is 48 in control group CONCLUSIONS Preoperative evaluation of hepatic veins is of great value for individual operative program via determination of anatomical type of hepatic veins Precise hemihepatectomy could preserve functional liver tissue with complete venous return to a great extent resulting in fewer incidences of postoperative pleural effusion and seroperitoneum Precise hemihepatectomy also has the potential to achieve more adequate tumor-free resection margin which may result in higher tumor-free survival rate.
ESTHER : Qiu_2012_World.J.Surg_36_2428
PubMedSearch : Qiu_2012_World.J.Surg_36_2428
PubMedID: 22714574

Title : Examining the interactome of huperzine A by magnetic biopanning - Guo_2012_PLoS.One_7_e37098
Author(s) : Guo W , Liu S , Peng J , Wei X , Sun Y , Qiu Y , Gao G , Wang P , Xu Y
Ref : PLoS ONE , 7 :e37098 , 2012
Abstract : Huperzine A is a bioactive compound derived from traditional Chinese medicine plant Qian Ceng Ta (Huperzia serrata), and was found to have multiple neuroprotective effects. In addition to being a potent acetylcholinesterase inhibitor, it was thought to act through other mechanisms such as antioxidation, antiapoptosis, etc. However, the molecular targets involved with these mechanisms were not identified. In this study, we attempted to exam the interactome of Huperzine A using a cDNA phage display library and also mammalian brain tissue extracts. The drugs were chemically linked on the surface of magnetic particles and the interactive phages or proteins were collected and analyzed. Among the various cDNA expressing phages selected, one was identified to encode the mitochondria NADH dehydrogenase subunit 1. Specific bindings between the drug and the target phages and target proteins were confirmed. Another enriched phage clone was identified as mitochondria ATP synthase, which was also panned out from the proteome of mouse brain tissue lysate. These data indicated the possible involvement of mitochondrial respiratory chain matrix enzymes in Huperzine A's pharmacological effects. Such involvement had been suggested by previous studies based on enzyme activity changes. Our data supported the new mechanism. Overall we demonstrated the feasibility of using magnetic biopanning as a simple and viable method for investigating the complex molecular mechanisms of bioactive molecules.
ESTHER : Guo_2012_PLoS.One_7_e37098
PubMedSearch : Guo_2012_PLoS.One_7_e37098
PubMedID: 22615909

Title : The genome of the mesopolyploid crop species Brassica rapa - Wang_2011_Nat.Genet_43_1035
Author(s) : Wang X , Wang H , Wang J , Sun R , Wu J , Liu S , Bai Y , Mun JH , Bancroft I , Cheng F , Huang S , Li X , Hua W , Freeling M , Pires JC , Paterson AH , Chalhoub B , Wang B , Hayward A , Sharpe AG , Park BS , Weisshaar B , Liu B , Li B , Tong C , Song C , Duran C , Peng C , Geng C , Koh C , Lin C , Edwards D , Mu D , Shen D , Soumpourou E , Li F , Fraser F , Conant G , Lassalle G , King GJ , Bonnema G , Tang H , Belcram H , Zhou H , Hirakawa H , Abe H , Guo H , Jin H , Parkin IA , Batley J , Kim JS , Just J , Li J , Xu J , Deng J , Kim JA , Yu J , Meng J , Min J , Poulain J , Hatakeyama K , Wu K , Wang L , Fang L , Trick M , Links MG , Zhao M , Jin M , Ramchiary N , Drou N , Berkman PJ , Cai Q , Huang Q , Li R , Tabata S , Cheng S , Zhang S , Sato S , Sun S , Kwon SJ , Choi SR , Lee TH , Fan W , Zhao X , Tan X , Xu X , Wang Y , Qiu Y , Yin Y , Li Y , Du Y , Liao Y , Lim Y , Narusaka Y , Wang Z , Li Z , Xiong Z , Zhang Z
Ref : Nat Genet , 43 :1035 , 2011
Abstract : We report the annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage. We modeled 41,174 protein coding genes in the B. rapa genome, which has undergone genome triplication. We used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution. The extent of gene loss (fractionation) among triplicated genome segments varies, with one of the three copies consistently retaining a disproportionately large fraction of the genes expected to have been present in its ancestor. Variation in the number of members of gene families present in the genome may contribute to the remarkable morphological plasticity of Brassica species. The B. rapa genome sequence provides an important resource for studying the evolution of polyploid genomes and underpins the genetic improvement of Brassica oil and vegetable crops.
ESTHER : Wang_2011_Nat.Genet_43_1035
PubMedSearch : Wang_2011_Nat.Genet_43_1035
PubMedID: 21873998
Gene_locus related to this paper: braol-Q8GTM3 , braol-Q8GTM4 , brarp-m4ei94 , brarp-m4c988 , brana-a0a078j4a9 , brana-a0a078e1m0 , brana-a0a078cd75 , brarp-m4dwa6 , brana-a0a078j4f0 , brana-a0a078cus4 , brana-a0a078f8c2 , brana-a0a078jql1 , brana-a0a078dgj3 , brana-a0a078hw50 , brana-a0a078cuu0 , brana-a0a078dfa9 , brana-a0a078ic91 , brarp-m4ctw3 , brana-a0a078ca65 , brana-a0a078ctc8 , brana-a0a078h021 , brana-a0a078jx23 , brarp-m4da84 , brarp-m4dwr7 , brana-a0a078dh94 , brana-a0a078h612 , brana-a0a078j2t3 , braol-a0a0d3dpb2 , braol-a0a0d3dx76 , brana-a0a078jxa8 , brana-a0a078i2k3 , brarp-m4cwq4 , brarp-m4dcj8 , brarp-m4eh17 , brarp-m4eey4 , brarp-m4dnj8 , brarp-m4ey83 , brarp-m4ey84

Title : De Novo assembly of the complete genome of an enhanced electricity-producing variant of Geobacter sulfurreducens using only short reads - Nagarajan_2010_PLoS.One_5_e10922
Author(s) : Nagarajan H , Butler JE , Klimes A , Qiu Y , Zengler K , Ward J , Young ND , Methe BA , Palsson BO , Lovley DR , Barrett CL
Ref : PLoS ONE , 5 :e10922 , 2010
Abstract : State-of-the-art DNA sequencing technologies are transforming the life sciences due to their ability to generate nucleotide sequence information with a speed and quantity that is unapproachable with traditional Sanger sequencing. Genome sequencing is a principal application of this technology, where the ultimate goal is the full and complete sequence of the organism of interest. Due to the nature of the raw data produced by these technologies, a full genomic sequence attained without the aid of Sanger sequencing has yet to be demonstrated.We have successfully developed a four-phase strategy for using only next-generation sequencing technologies (Illumina and 454) to assemble a complete microbial genome de novo. We applied this approach to completely assemble the 3.7 Mb genome of a rare Geobacter variant (KN400) that is capable of unprecedented current production at an electrode. Two key components of our strategy enabled us to achieve this result. First, we integrated the two data types early in the process to maximally leverage their complementary characteristics. And second, we used the output of different short read assembly programs in such a way so as to leverage the complementary nature of their different underlying algorithms or of their different implementations of the same underlying algorithm.The significance of our result is that it demonstrates a general approach for maximizing the efficiency and success of genome assembly projects as new sequencing technologies and new assembly algorithms are introduced. The general approach is a meta strategy, wherein sequencing data are integrated as early as possible and in particular ways and wherein multiple assembly algorithms are judiciously applied such that the deficiencies in one are complemented by another.
ESTHER : Nagarajan_2010_PLoS.One_5_e10922
PubMedSearch : Nagarajan_2010_PLoS.One_5_e10922
PubMedID: 20544019

Title : Discovery of potent and reversible monoacylglycerol lipase inhibitors - King_2009_Chem.Biol_16_1045
Author(s) : King AR , Dotsey EY , Lodola A , Jung KM , Ghomian A , Qiu Y , Fu J , Mor M , Piomelli D
Ref : Chemical Biology , 16 :1045 , 2009
Abstract : Monoacylglycerol lipase (MGL) is a serine hydrolase involved in the biological deactivation of the endocannabinoid 2-arachidonoyl-sn-glycerol (2-AG). Previous efforts to design MGL inhibitors have focused on chemical scaffolds that irreversibly block the activity of this enzyme. Here, we describe two naturally occurring terpenoids, pristimerin and euphol, which inhibit MGL activity with high potency (median effective concentration, IC(50) = 93 nM and 315 nM, respectively) through a reversible mechanism. Mutational and modeling studies suggest that the two agents occupy a common hydrophobic pocket located within the putative lid domain of MGL, and each reversibly interacts with one of two adjacent cysteine residues (Cys(201) and Cys(208)) flanking such pocket. This previously unrecognized regulatory region might offer a molecular target for potent and reversible inhibitors of MGL.
ESTHER : King_2009_Chem.Biol_16_1045
PubMedSearch : King_2009_Chem.Biol_16_1045
PubMedID: 19875078

Title : Association study between adolescent idiopathic scoliosis and the DPP9 gene which is located in the candidate region identified by linkage analysis - Qiu_2008_Postgrad.Med.J_84_498
Author(s) : Qiu XS , Tang NL , Yeung HY , Qiu Y , Cheng JC
Ref : Postgrad Med J , 84 :498 , 2008
Abstract : BACKGROUND: It has been recognised that genetic or hereditary factors may contribute to the aetiology of adolescent idiopathic scoliosis (AIS). Recently, two linkage analyses have identified 19p13.3 as the candidate region for AIS. The dipeptidyl peptidase 9 (DPP9) gene is located on chromosome 19p13.3.
OBJECTIVE: To investigate whether DPP9 gene polymorphisms are associated with the occurrence or curve severity of AIS.
METHODS: 571 girls with AIS and 236 normal controls were recruited. Using the Chinese data from the HapMap project, a set of tagging single-nucleotide polymorphisms (tagSNPs) were defined for the DPP9 gene. Five SNPs were genotyped by PCR restriction fragment length polymorphism. Statistical analysis of genotype frequencies between cases and controls was performed by the chi2 test. One-way analysis of variance was used to compare mean maximum Cobb angles with different genotypes in case-only analysis.
RESULTS: Genotype frequencies were comparable between cases and controls for all five polymorphisms (p>0.05). The mean maximum Cobb angles of different genotypes were similar to each other for all five polymorphisms.
CONCLUSIONS: The DPP9 gene is not associated with the occurrence or curve severity of AIS. It is neither a disease-predisposition nor a disease-modifying gene of AIS.
ESTHER : Qiu_2008_Postgrad.Med.J_84_498
PubMedSearch : Qiu_2008_Postgrad.Med.J_84_498
PubMedID: 18940951

Title : Abnormal spreading and subunit expression of junctional acetylcholine receptors of paraspinal muscles in scoliosis associated with syringomyelia - Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
Author(s) : Zhu Z , Qiu Y , Wang B , Yu Y , Qian B , Zhu F
Ref : Spine (Phila Pa 1976) , 32 :2449 , 2007
Abstract : STUDY DESIGN: A comparative study was performed among 2 groups of patients: Group A with scoliosis and syringomyelia and Group B with idiopathic scoliosis. OBJECTIVE: To investigate the denervation of paraspinal muscles and analyze its association with scoliosis in patients with syringomyelia. SUMMARY OF BACKGROUND DATA: The mechanism by which scoliosis develops secondary to syringomyelia remains unclear. Some authors hypothesize that scoliosis may be caused by an alteration in the innervation of the trunk musculature. Few studies, however, have been reported to testify the presence of denervation of the paraspinal muscles in scoliotic patients with syringomyelia.
METHODS: Forty-one children were enrolled in the study and were divided into 2 groups. Group A consisted of 25 patients with scoliosis associated with syringomyelia. Group B included 16 adolescents with idiopathic scoliosis. Bilateral biopsy of paraspinal muscles was performed during scheduled spinal surgery. Distribution of acetylcholine receptors (AChRs) and acetylcholinesterase was investigated by immunofluorescence staining. RT-PCR was performed to determine the AChRs subunit mRNA expression.
RESULTS: Immunostaining showed that 56% patients in Group A were scored positive for the loss of localization of AChRs to neuromuscular junction, while all Group B patients were negative. gamma-AChR subunit expression was detected in 65% patients in Group A while absent in all samples in Group B. There was no statistical significance of both the positive rate of abnormal spreading and that of gamma subunit expression of AChRs between the convex and concave side in Group A. CONCLUSION: The denervation of paraspinal muscles is present in some patients with scoliosis associated with syringomyelia. The size of the syrinx and the degree of cerebellar tonsillar descent might seem to have no relation to the denervation of paraspinal muscles.
ESTHER : Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
PubMedSearch : Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
PubMedID: 18090084