149 results on '"Li, JL"'
Search Results
2. Substantia nigra tangles are related to gait impairment in older persons.
- Author
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Schneider JA, Li JL, Li Y, Wilson RS, Kordower JH, and Bennett DA
- Published
- 2006
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3. Long-Term Durability of Transcatheter Aortic Valve Prostheses in Patients With Bicuspid Versus Tricuspid Aortic Valve.
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Li HD, Li WY, Li JL, Peng SQ, Feng Y, Peng Y, Wei JF, Zhao ZG, Xiong TY, Ou YX, Wang Y, Li Q, Yang HR, Song CX, Yao YJ, Zhu ZK, Liu Q, Wang X, and Chen M
- Subjects
- Humans, Female, Male, Aged, Aged, 80 and over, Time Factors, Aortic Valve Stenosis surgery, Aortic Valve Stenosis physiopathology, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis complications, Prosthesis Design, Retrospective Studies, Heart Valve Diseases surgery, Heart Valve Diseases complications, Heart Valve Diseases physiopathology, Treatment Outcome, Follow-Up Studies, Echocardiography, Transcatheter Aortic Valve Replacement instrumentation, Transcatheter Aortic Valve Replacement methods, Bicuspid Aortic Valve Disease surgery, Bicuspid Aortic Valve Disease physiopathology, Bicuspid Aortic Valve Disease complications, Heart Valve Prosthesis, Bioprosthesis, Aortic Valve surgery, Aortic Valve diagnostic imaging, Aortic Valve abnormalities, Aortic Valve physiopathology, Hemodynamics, Prosthesis Failure
- Abstract
Background: Currently, there is a lack of evidence for the long-term bioprosthetic valve durability of patients with bicuspid aortic valve (BAV) following transcatheter aortic valve replacement (TAVR)., Methods and Results: This study aimed to evaluate hemodynamic outcome, structural valve deterioration, and bioprosthetic valve failure during long-term follow-up after TAVR in patients with BAV versus patients with tricuspid aortic valve (TAV). Patients with BAV and TAV who underwent TAVR between 2012 and 2020, with echocardiography followed for at least 3 years, were included. Baseline characteristics, long-term valve hemodynamic performance, structural valve deterioration, and bioprosthetic valve failure were compared between patients with BAV and TAV. A total of 170 patients with BAV and 145 patients with TAV were included. The mean duration of follow-up for patients with BAV and TAV was 5.2±1.8 and 5.0±1.7 years. No significant differences were observed in the rates of structural valve deterioration and bioprosthetic valve failure between patients with BAV and TAV: structural valve deterioration, BAV 20 (11.8%) versus TAV 16 (11.0%) at last follow-up ( P =0.861); bioprosthetic valve failure, BAV 3 (1.8%) versus TAV 7 (4.8%) at last follow-up ( P =0.196). More than moderate intravalvular aortic regurgitation (1.8% versus 4.8%, P =0.196) and paravalvular leak (6.5% versus 3.4%, P =0.305) were rare in both patients with BAV and patients with TAV., Conclusions: This study indicated satisfactory long-term valve durability of TAVR in patients with BAV. Comparable hemodynamic outcome, structural valve deterioration, and bioprosthetic valve failure could be achieved in patients with BAV and TAV during long-term follow-up after TAVR.
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- 2024
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4. Feasibility and effectiveness of transcutaneous auricular vagus nerve stimulation (taVNS) in awake mice.
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Yu YM, Yao R, Liu ZL, Lu Y, Zhu YZ, and Cao JL
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- Animals, Male, Mice, Mice, Inbred C57BL, Maze Learning physiology, Anxiety therapy, Recognition, Psychology physiology, Open Field Test, Herpesvirus 1, Suid, Vagus Nerve Stimulation methods, Vagus Nerve Stimulation instrumentation, Wakefulness physiology, Transcutaneous Electric Nerve Stimulation methods, Transcutaneous Electric Nerve Stimulation instrumentation, Feasibility Studies
- Abstract
Aims: Transcutaneous auricular vagus nerve stimulation (taVNS) is widely used to treat a variety of disorders because it is noninvasive, safe, and well tolerated by awake patients. However, long-term and repetitive taVNS is difficult to achieve in awake mice. Therefore, developing a new taVNS method that fully mimics the method used in clinical settings and is well-tolerated by awake mice is greatly important for generalizing research findings related to the effects of taVNS. The study aimed to develop a new taVNS device for use in awake mice and to test its reliability and effectiveness., Methods: We demonstrated the reliability of this taVNS device through retrograde neurotropic pseudorabies virus (PRV) tracing and evaluated its effectiveness through morphological analysis. After 3 weeks of taVNS application, the open field test (OFT) and elevated plus maze (EPM) were used to evaluate anxiety-like behaviors, and the Y-maze test and novel object recognition test (NORT) were used to evaluate recognition memory behaviors, respectively., Results: We found that repetitive taVNS was well tolerated by awake mice, had no effect on anxiety-like behaviors, and significantly improved memory., Conclusion: Our findings suggest that this new taVNS device for repetitive stimulation of awake mice is safe, tolerable, and effective., (© 2024 The Author(s). CNS Neuroscience & Therapeutics published by John Wiley & Sons Ltd.)
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- 2024
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5. A missense mutation in human INSC causes peripheral neuropathy.
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Yeh JY, Chao HC, Hong CL, Hung YC, Tzou FY, Hsiao CT, Li JL, Chen WJ, Chou CT, Tsai YS, Liao YC, Lin YC, Lin S, Huang SY, Kennerson M, Lee YC, and Chan CC
- Subjects
- Animals, Humans, Cell Cycle Proteins genetics, Cell Cycle Proteins metabolism, Disease Models, Animal, Drosophila genetics, Nuclear Proteins, Peripheral Nervous System Diseases genetics, Peripheral Nervous System Diseases pathology, Tubulin genetics, Tubulin metabolism, Drosophila Proteins genetics, Drosophila Proteins metabolism, Adaptor Proteins, Signal Transducing genetics, Adaptor Proteins, Signal Transducing metabolism, Charcot-Marie-Tooth Disease genetics, Charcot-Marie-Tooth Disease pathology, Mutation, Missense, Cytoskeletal Proteins genetics, Cytoskeletal Proteins metabolism
- Abstract
PAR3/INSC/LGN form an evolutionarily conserved complex required for asymmetric cell division in the developing brain, but its post-developmental function and disease relevance in the peripheral nervous system (PNS) remains unknown. We mapped a new locus for axonal Charcot-Marie-Tooth disease (CMT2) and identified a missense mutation c.209 T > G (p.Met70Arg) in the INSC gene. Modeling the INSC
M70R variant in Drosophila, we showed that it caused proprioceptive defects in adult flies, leading to gait defects resembling those in CMT2 patients. Cellularly, PAR3/INSC/LGN dysfunction caused tubulin aggregation and necrotic neurodegeneration, with microtubule-stabilizing agents rescuing both morphological and functional defects of the INSCM70R mutation in the PNS. Our findings underscore the critical role of the PAR3/INSC/LGN machinery in the adult PNS and highlight a potential therapeutic target for INSC-associated CMT2., (© 2024. The Author(s).)- Published
- 2024
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6. NPS-2143 inhibit glioma progression by suppressing autophagy through mediating AKT-mTOR pathway.
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Nie JL, Li Q, Yin HT, Yang JH, Li M, Li Q, Fan XH, Zhao QQ, and Wen ZP
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- Animals, Humans, Mice, Apoptosis, Autophagy, Cell Line, Tumor, Cell Proliferation, Mice, Nude, RNA, Messenger genetics, TOR Serine-Threonine Kinases metabolism, Glioma drug therapy, Glioma genetics, Glioma metabolism, Proto-Oncogene Proteins c-akt metabolism, Naphthalenes pharmacology
- Abstract
Gliomas are the most common tumours in the central nervous system. In the present study, we aimed to find a promising anti-glioma compound and investigate the underlying molecular mechanism. Glioma cells were subjected to the 50 candidate compounds at a final concentration of 10 μM for 72 h, and CCK-8 was used to evaluate their cytotoxicity. NPS-2143, an antagonist of calcium-sensing receptor (CASR), was selected for further study due to its potent cytotoxicity to glioma cells. Our results showed that NPS-2143 could inhibit the proliferation of glioma cells and induce G1 phase cell cycle arrest. Meanwhile, NPS-2143 could induce glioma cell apoptosis by increasing the caspase-3/6/9 activity. NPS-2143 impaired the immigration and invasion ability of glioma cells by regulating the epithelial-mesenchymal transition process. Mechanically, NPS-2143 could inhibit autophagy by mediating the AKT-mTOR pathway. Bioinformatic analysis showed that the prognosis of glioma patients with low expression of CASR mRNA was better than those with high expression of CASR mRNA. Gene set enrichment analysis showed that CASR was associated with cell adhesion molecules and lysosomes in glioma. The nude mice xenograft model showed NPS-2143 could suppress glioma growth in vivo. In conclusion, NPS-2143 can suppress the glioma progression by inhibiting autophagy., (© 2024 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd.)
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- 2024
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7. Plasma protein signatures of adult asthma.
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Smilnak GJ, Lee Y, Chattopadhyay A, Wyss AB, White JD, Sikdar S, Jin J, Grant AJ, Motsinger-Reif AA, Li JL, Lee M, Yu B, and London SJ
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- Adult, Humans, Proteomics methods, Biomarkers, Phenotype, Blood Proteins genetics, Asthma metabolism, Hypersensitivity, Immediate
- Abstract
Background: Adult asthma is complex and incompletely understood. Plasma proteomics is an evolving technique that can both generate biomarkers and provide insights into disease mechanisms. We aimed to identify plasma proteomic signatures of adult asthma., Methods: Protein abundance in plasma was measured in individuals from the Agricultural Lung Health Study (ALHS) (761 asthma, 1095 non-case) and the Atherosclerosis Risk in Communities study (470 asthma, 10,669 non-case) using the SOMAScan 5K array. Associations with asthma were estimated using covariate adjusted logistic regression and meta-analyzed using inverse-variance weighting. Additionally, in ALHS, we examined phenotypes based on both asthma and seroatopy (asthma with atopy (n = 207), asthma without atopy (n = 554), atopy without asthma (n = 147), compared to neither (n = 948))., Results: Meta-analysis of 4860 proteins identified 115 significantly (FDR<0.05) associated with asthma. Multiple signaling pathways related to airway inflammation and pulmonary injury were enriched (FDR<0.05) among these proteins. A proteomic score generated using machine learning provided predictive value for asthma (AUC = 0.77, 95% CI = 0.75-0.79 in training set; AUC = 0.72, 95% CI = 0.69-0.75 in validation set). Twenty proteins are targeted by approved or investigational drugs for asthma or other conditions, suggesting potential drug repurposing. The combined asthma-atopy phenotype showed significant associations with 20 proteins, including five not identified in the overall asthma analysis., Conclusion: This first large-scale proteomics study identified over 100 plasma proteins associated with current asthma in adults. In addition to validating previous associations, we identified many novel proteins that could inform development of diagnostic biomarkers and therapeutic targets in asthma management., (© 2024 The Authors. Allergy published by John Wiley & Sons Ltd and European Academy of Allergy and Clinical Immunology. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.)
- Published
- 2024
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8. Parkin regulates microglial NLRP3 and represses neurodegeneration in Parkinson's disease.
- Author
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Yan YQ, Zheng R, Liu Y, Ruan Y, Lin ZH, Xue NJ, Chen Y, Zhang BR, and Pu JL
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- Mice, Animals, Microglia metabolism, Inflammasomes metabolism, NLR Family, Pyrin Domain-Containing 3 Protein genetics, NLR Family, Pyrin Domain-Containing 3 Protein metabolism, Lipopolysaccharides pharmacology, Mice, Inbred NOD, Mice, Knockout, Ubiquitin-Protein Ligases genetics, Ubiquitin-Protein Ligases metabolism, Mice, Inbred C57BL, Parkinson Disease metabolism
- Abstract
Microglial hyperactivation of the NOD-, LRR-, and pyrin domain-containing 3 (NLRP3) inflammasome contributes to the pathogenesis of Parkinson's disease (PD). Recently, neuronally expressed NLRP3 was demonstrated to be a Parkin polyubiquitination substrate and a driver of neurodegeneration in PD. However, the role of Parkin in NLRP3 inflammasome activation in microglia remains unclear. Thus, we aimed to investigate whether Parkin regulates NLRP3 in microglia. We investigated the role of Parkin in NLRP3 inflammasome activation through the overexpression of Parkin in BV2 microglial cells and knockout of Parkin in primary microglia after lipopolysaccharide (LPS) treatment. Immunoprecipitation experiments were conducted to quantify the ubiquitination levels of NLRP3 under various conditions and to assess the interaction between Parkin and NLRP3. In vivo experiments were conducted by administering intraperitoneal injections of LPS in wild-type and Parkin knockout mice. The Rotarod test, pole test, and open field test were performed to evaluate motor functions. Immunofluorescence was performed for pathological detection of key proteins. Overexpression of Parkin mediated NLRP3 degradation via K48-linked polyubiquitination in microglia. The loss of Parkin activity in LPS-induced mice resulted in excessive microglial NLRP3 inflammasome assembly, facilitating motor impairment, and dopaminergic neuron loss in the substantia nigra. Accelerating Parkin-induced NLRP3 degradation by administration of a heat shock protein (HSP90) inhibitor reduced the inflammatory response. Parkin regulates microglial NLRP3 inflammasome activation through polyubiquitination and alleviates neurodegeneration in PD. These results suggest that targeting Parkin-mediated microglial NLRP3 inflammasome activity could be a potential therapeutic strategy for PD., (© 2023 The Authors. Aging Cell published by the Anatomical Society and John Wiley & Sons Ltd.)
- Published
- 2023
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9. Nongenetic and genetic predictors of haemodynamic instability induced by propofol and opioids: A retrospective clinical study.
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Gu QL, Xue FL, Zheng ZL, Wang HN, Guan YP, Wen YZ, Ye F, Huang M, Huang WQ, Wang ZX, and Li JL
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- Humans, Anesthetics, Intravenous pharmacokinetics, Analgesics, Opioid pharmacology, Brain-Derived Neurotrophic Factor pharmacology, Pregnane X Receptor, Retrospective Studies, Blood Pressure, Hemodynamics, Propofol pharmacokinetics
- Abstract
Aim: Propofol and opioids are commonly used in anaesthesia, but are highly susceptible to haemodynamic instability, thereby threatening the patient's surgical safety and prognosis. The purpose of this study was to investigate the predictors of haemodynamic instability and establish its predictive model., Methods: A total of 150 Chinese patients undergoing thyroid or breast surgery participated in the study, with target-controlled infusion concentrations of propofol, opioids dosage, heart rate (HR), mean arterial pressure (MAP) and Narcotrend Index recorded at key points throughout the procedure. The Agena MassARRAY system was used to genotype candidate single nucleotide polymorphisms related to pharmacodynamics and pharmacokinetics of propofol and opioids., Results: Among nongenetic factors, baseline HR (R = -.579, P < .001) and baseline MAP (R = -.725, P < .001) had a significant effect on the haemodynamic instability. Among genetic factors, the CT/CC genotype of GABRB1 rs4694846 (95% confidence interval [CI]: -11.309 to -3.155), AA/AG of OPRM1 rs1799971 (95%CI: 0.773 to 10.290), AA of CES2 rs8192925 (95%CI: 1.842 to 9.090) were associated with higher HR instability; the AA/GG genotype of NR1I2 rs6438550 (95%CI: 0.351 to 7.761), AA of BDNF rs2049046 (95%CI: -9.039 to -0.640) and GG of GABBR2 rs1167768 (95%CI: -10.146 to -1.740) were associated with higher MAP instability. The predictive models of HR and MAP fluctuations were developed, accounting for 45.0 and 59.2% of variations, respectively., Conclusion: We found that cardiovascular fundamentals and genetic variants of GABRB1, GABBR2, OPRM1, BDNF, CES2 and NR1I2 are associated with cardiovascular susceptibility, which can provide a reference for haemodynamic management in clinical anaesthesia., (© 2022 British Pharmacological Society.)
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- 2023
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10. Dynorphin promotes stress-induced depressive behaviors by inhibiting ventral pallidal neurons in rats.
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Ji MJ, Gao ZQ, Yang J, Cai JH, Li KX, Wang J, Zhang H, Zhou CH, Cao JL, and Liu C
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- Animals, Mice, Rats, Calcium Channels, Mice, Inbred C57BL, Neurons metabolism, Potassium pharmacology, Receptors, Opioid, kappa genetics, Receptors, Opioid, kappa metabolism, RNA, Small Interfering, Depression, Behavior, Animal, Stress, Physiological, Basal Forebrain metabolism, Dynorphins genetics, Dynorphins metabolism, Dynorphins pharmacology
- Abstract
Aim: Endogenous dynorphin signaling via kappa opioid receptors (KORs) plays a key role in producing the depressive and aversive consequences of stress. We investigated the behavioral effects of the dynorphin/KOR system in the ventral pallidum (VP) and studied the underlying mechanisms., Methods: To investigate the effects of dynorphin on the VP, we conducted behavioral experiments after microinjection of drugs or shRNA and brain-slice electrophysiological recordings. Histological tracing and molecular biological experiments were used to identify the distribution of KORs and the possible sources of dynorphin projections to the VP., Results: An elevated dynorphin concentration and increased KOR activity were observed in the VP after acute stress. Infusion of dynorphin-A into the VP produced depressive-like phenotypes including anhedonia and despair and anxiety behaviors, but did not alter locomotor behavior. Mechanistically, dynorphin had an inhibitory effect on VP neurons-reducing their firing rate and inhibiting excitatory transmission-through direct activation of KORs and modulation of downstream G-protein-gated inwardly rectifying potassium (GIRK) channels and high-voltage gated calcium channels (VGCCs). Tracing revealed direct innervation of VP neurons by dynorphin-positive projections; potential sources of these dynorphinergic projections include the nucleus accumbens, amygdala, and hypothalamus. Blockade of dynorphin/KOR signaling in the VP by drugs or viral knock-down of KORs significantly reduced despair behavior in rats., Conclusions: Endogenous dynorphinergic modulation of the VP plays a critical role in mediating depressive reactions to stress., (© 2022 Scandinavian Physiological Society. Published by John Wiley & Sons Ltd.)
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- 2022
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11. The binding between NPM and H2B proteins signals for the diabetes-associated centrosome amplification.
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Xu SX, Han YW, Guo JL, Bian XK, Hu HM, and Lee SC
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- Centrosome metabolism, Centrosome pathology, Glucose metabolism, HCT116 Cells, Humans, Insulin metabolism, Molecular Docking Simulation, Diabetes Mellitus metabolism, Histones metabolism, Nucleophosmin metabolism, Palmitic Acid metabolism
- Abstract
Diabetes not only increases the risk for cancer but also promotes cancer metastasis. Centrosome amplification (CA) is sufficient to initiate tumorigenesis and can enhance the invasion potential of cancer cells. We have reported that diabetes can induce CA, with diabetic pathophysiological factors as the triggers, which involves the signaling of nucleophosmin (NPM). Thus, CA can serve as a candidate biological link between diabetes and cancer. In the present study, we attempted to identify the NPM binding partners and investigated whether the binding between NPM and its partner mediated the CA. We confirmed that high glucose, insulin, and palmitic acid cancer could elicit CA in the HCT16 colon cancer cells and found that the experimental treatment increased the binding between NPM and H2B, but not between p-NPM and H2B. The molecular docking analysis supported the fact that NPM and H2B could bind to each other through various amino acid residues. The treatment also increased the colocalization of NPM and H2B in the cytosol. Importantly, disruption of the NPM1-H2B complex by individual knockdown of the protein level of NPM or H2B led to the inhibition of the treatment-evoked CA. In conclusion, our results suggest that the binding between NPM and H2B proteins signals for the CA by high glucose, insulin, and palmitic acid., (© 2022 John Wiley & Sons Ltd.)
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- 2022
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12. Genetic association study of intron variants in the forkhead box protein P3 gene in Chinese patients diagnosed with cervical cancer.
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Shi F, Pang XX, Li GJ, Chen ZH, Dong MY, and Wang JL
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- Case-Control Studies, China, Female, Forkhead Transcription Factors genetics, Genetic Association Studies, Genetic Predisposition to Disease, Genotype, Humans, Introns genetics, Mutation, Polymorphism, Single Nucleotide genetics, Forkhead Box Protein O3 genetics, Papillomavirus Infections genetics, Uterine Cervical Neoplasms genetics
- Abstract
The aim of this study was to investigate the effects of forkhead box protein P3 (FOXP3) intron single nucleotide variants (SNVs) in high-risk human papilloma virus (HR-HPV) infection and cervical cancer (CC) malignant lesions. We performed FOXP3 genotyping in 350 patients with CC and 350 healthy controls using the ImLDR multiple single nucleotide polymorphism genotyping technology. The heterozygous mutation TC in rs2294021 decreased the risk of HR-HPV infection and CC malignant lesions (TC vs. TT: OR = 0.71, 95% CI = 0.51-0.99); the dominant model TC+CC and allele C in rs2294021 decreased the risk of CC malignant lesions (TC+CC vs. TT: OR = 0.69, 95% CI = 0.50-0.95; C vs. T: OR = 0.78, 95% CI = 0.63-0.97). The heterozygous mutation GA, dominant model GA+AA and allele A in rs3761549 also decreased the risk of HR-HPV infection and CC malignant lesions (GA vs. GG: OR = 0.70, 95% CI = 0.51-0.96; GA+AA vs. GG: OR = 0.69, 95% CI = 0.51-0.94; A vs. G: OR = 0.75, 95% CI = 0.58-0.96). Patients with CC and HR-HPV infection carrying rs2294021 TC and rs3761549 GA had lower expression of FOXP3 protein. Haplotype analysis revealed that T-C-A decreased the risk of HR-HPV infection. Furthermore, we found a significant association between immune cells infiltration and prognosis in patients with CC. Our findings demonstrated that rs2294021 and rs3761549 variants may protect against HR-HPV and CC malignant lesions by downregulating FOXP3 and that FOXP3 was associated with immune cells infiltration, which affected the prognosis of CC., (© 2022 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd.)
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- 2022
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13. Automated machine learning-based model predicts postoperative delirium using readily extractable perioperative collected electronic data.
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Hu XY, Liu H, Zhao X, Sun X, Zhou J, Gao X, Guan HL, Zhou Y, Zhao Q, Han Y, and Cao JL
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- Electronics, Humans, Machine Learning, Postoperative Complications diagnosis, Postoperative Complications epidemiology, Retrospective Studies, Risk Factors, Delirium diagnosis, Delirium epidemiology, Delirium etiology
- Abstract
Objective: Postoperative delirium (POD) is a common postoperative complication that is relevant to poor outcomes. Therefore, it is critical to find effective methods to identify patients with high risk of POD rapidly. Creating a fully automated score based on an automated machine-learning algorithm may be a method to predict the incidence of POD quickly., Materials and Methods: This is the secondary analysis of an observational study, including 531 surgical patients who underwent general anesthesia. The least absolute shrinkage and selection operator (LASSO) was used to screen essential features associated with POD. Finally, eight features (age, intraoperative blood loss, anesthesia duration, extubation time, intensive care unit [ICU] admission, mini-mental state examination score [MMSE], Charlson comorbidity index [CCI], postoperative neutrophil-to-lymphocyte ratio [NLR]) were used to established models. Four models, logistic regression, random forest, extreme gradient boosted trees, and support vector machines, were built in a training set (70% of participants) and evaluated in the remaining testing sample (30% of participants). Multivariate logistic regression analysis was used to explore independent risk factors for POD further., Results: Model 1 (logistic regression model) was found to outperform other classifier models in testing data (area under the curve [AUC] of 80.44%, 95% confidence interval [CI] 72.24%-88.64%) and achieve the lowest Brier Score as well. These variables including age (OR = 1.054, 95%CI: 1.017~1.093), extubation time (OR = 1.027, 95%CI: 1.012~1.044), ICU admission (OR = 2.238, 95%CI: 1.313~3.793), MMSE (OR = 0.929, 95%CI: 0.876~0.984), CCI (OR = 1.197, 95%CI: 1.038~1.384), and postoperative NLR (OR = 1.029, 95%CI: 1.002~1.057) were independent risk factors for POD in this study., Conclusions: We have built and validated a high-performing algorithm to demonstrate the extent to which patient risk changes of POD during the perioperative period, thus leading to a rational therapeutic choice., (© 2021 The Authors. CNS Neuroscience & Therapeutics published by John Wiley & Sons Ltd.)
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- 2022
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14. Urinary albumin creatinine ratio associated with postoperative delirium in elderly patients undergoing elective non-cardiac surgery: A prospective observational study.
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Guan HL, Liu H, Hu XY, Abdul M, Dai MS, Gao X, Chen XF, Zhou Y, Sun X, Zhou J, Li X, Zhao Q, Zhang QQ, Wang J, Han Y, and Cao JL
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- Aged, Albumins, Creatinine, Humans, Middle Aged, Prospective Studies, Risk Factors, Delirium diagnosis, Delirium etiology, Postoperative Complications diagnosis
- Abstract
Introduction: The blood-brain barrier (BBB) disruption contributes to postoperative delirium, but cost-effective and non-invasive assessment of its permeability is not practicable in the clinical settings. Urine albumin to creatinine ratio (UACR), reflecting systemic vascular endothelial dysfunction, may be a prognostic and predictive factor associated with postoperative delirium. The aim was to analyze the relationship between UACR and postoperative delirium in elderly patients undergoing elective non-cardiac surgery., Materials and Methods: Through stratified random sampling, a cohort of 408 individuals aged 60 years and older scheduled for elective non-cardiac surgery were included between February and August 2019 in the single-center, prospective, observational study. The presence of delirium was assessed using the Confusion Assessment Method (CAM) or Confusion Assessment Method for the ICU (CAM-ICU) on the day of surgery, at 2 h after the surgery ending time and on the first 3 consecutive days with repeated twice-daily, with at least 6-h intervals between assessments. Urine samples were collected on one day before surgery, and 1st day and 3rd day after surgery. The primary outcome was the presence of postoperative delirium, and association of the level of UACR with postoperative delirium was evaluated with unadjusted/adjusted analyses and multivariable logistic regression., Results: Postoperative delirium was observed in 26.75% (107 of 400) of patients within 3 days post-surgery. UACR-Pre (OR, 1.30; 95% CI, 1.14-1.49, p < 0.001), UACR-POD1 (OR, 1.20; 95% CI, 1.13-1.27, p < 0.001), and UACR-POD3 (OR, 1.14; 95% CI, 1.08-1.20, p < 0.001) between the delirium and non-delirium groups show a significant difference, even after adjusting for age, education levels, and other factors., Conclusion: As the marker of endothelial dysfunction, the high perioperative UACR value may be linked to the postoperative delirium in elderly patients undergoing elective non-cardiac surgery., (© 2021 The Authors. CNS Neuroscience & Therapeutics published by John Wiley & Sons Ltd.)
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- 2022
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15. The novel left atrial strain parameters in diagnosing of heart failure with preserved ejection fraction.
- Author
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Ma CS, Liao YP, Fan JL, Zhao X, Su B, and Zhou BY
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- Echocardiography, Heart Atria diagnostic imaging, Humans, Stroke Volume, Ventricular Function, Left, Heart Failure, Ventricular Dysfunction, Left
- Abstract
Objectives: We sought to evaluate the ability of the novel LA strain parameters to discriminate patients with heart failure with preserved ejection fraction (HFpEF) from individuals with risk factors of HFpEF., Methods and Results: A total of n = 389 patients with risk factors for HFpEF finally was prospectively enrolled into the study, 66 of them were diagnosed with HFpEF by the 2021 ESC HF guidelines. Fifty-five patients were undergone left ventricular catheterization and simultaneous transthoracic echocardiography was performed, 35 of them with elevated left ventricular end-diastolic pressure (LVEDP). Left atrial reservoir strain (LASr) was measured in all patients. LA filling index was defined as the ratio of mitral E and LASr and LA stiffness index was calculated as E/e'/LASr. Compared with the patients in the normal LVEDP subgroup, those in the elevated LVEDP subgroup showed significantly higher LA filling index, LA stiffness index, and LAVI/LASr. The receiver-operating characteristic curve (ROC) analysis showed LASr (area under curve [AUC] .840), LA filling index (AUC .843), LA stiffness index (AUC .766), and LAVI/LASr (AUC .755) had good diagnostic accuracy for elevated LVEDP. Inter-technique agreement analysis showed the novel algorithms with LA strain parameters had good agreement with the invasive LVEDP measurement, better than the 2016 ASE/SCAI algorithms (kappa .711 vs. .101). Furthermore, compared with patients without HFpEF, LASr was lower in HFpEF, LA filling index, LA stiffness index, and LAVI/LASr was higher in patients with HFpEF. ROC analysis showed the novel LA strain parameters with good accuracy (AUC .756 to .821) non-inferior to conventional echocardiographic parameters could identify HFpEF, and LA stiffness index (AUC .821) was the best one., Conclusion: The novel LA strain parameters could be of potential usefulness in estimating LVEDP and incorporated into the 2016 EACVI/ASE criteria would improve the diagnostic efficiency. The novel LA strain parameters with good accuracy non-inferior to conventional echocardiographic parameters could discriminate HFpEF from patients with risk factors of HFpEF., (© 2022 The Authors. Echocardiography published by Wiley Periodicals LLC.)
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- 2022
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16. Association analysis of SYT11, FGF20, GCH1 rare variants in Parkinson's disease.
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Pu JL, Lin ZH, Zheng R, Yan YQ, Xue NJ, Yin XZ, and Zhang BR
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- Asian People, Female, Humans, Male, Middle Aged, Parkinson Disease blood, Fibroblast Growth Factors genetics, GTP Cyclohydrolase genetics, Genetic Predisposition to Disease, Parkinson Disease genetics, Synaptotagmins genetics
- Published
- 2022
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17. Retinol-Binding Protein 4 Promotes Cardiac Injury After Myocardial Infarction Via Inducing Cardiomyocyte Pyroptosis Through an Interaction With NLRP3.
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Zhang KZ, Shen XY, Wang M, Wang L, Sun HX, Li XZ, Huang JJ, Li XQ, Wu C, Zhao C, Liu JL, Lu X, and Gao W
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- Animals, Hypoxia, Inflammasomes metabolism, Mice, Myocytes, Cardiac metabolism, NLR Family, Pyrin Domain-Containing 3 Protein genetics, NLR Family, Pyrin Domain-Containing 3 Protein metabolism, Pyroptosis, Retinol-Binding Proteins, Retinol-Binding Proteins, Plasma, Heart Injuries, Myocardial Infarction genetics
- Abstract
Background Acute myocardial infarction (AMI) is one of the leading causes of cardiovascular morbidity and mortality worldwide. Pyroptosis is a form of inflammatory cell death that plays a major role in the development and progression of cardiac injury in AMI. However, the underlying mechanisms for the activation of pyroptosis during AMI are not fully elucidated. Methods and Results Here we show that RBP4 (retinol-binding protein 4), a previous identified proinflammatory adipokine, was increased both in the myocardium of left anterior descending artery ligation-induced AMI mouse model and in ischemia-hypoxia‒induced cardiomyocyte injury model. The upregulated RBP4 may contribute to the activation of cardiomyocyte pyroptosis in AMI because overexpression of RBP4 activated NLRP3 (nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3) inflammasome, promoted the precursor cleavage of Caspase-1, and subsequently induced GSDMD (gasdermin-D)-dependent pyroptosis. In contrast, knockdown of RBP4 alleviated ischemia-hypoxia‒induced activation of NLRP3 inflammasome signaling and pyroptosis in cardiomyocytes. Mechanistically, coimmunoprecipitation assay showed that RBP4 interacted directly with NLRP3 in cardiomyocyte, while genetic knockdown or pharmacological inhibition of NLRP3 attenuated RBP4-induced pyroptosis in cardiomyocytes. Finally, knockdown of RBP4 in heart decreased infarct size and protected against AMI-induced pyroptosis and cardiac dysfunction in mice. Conclusions Taken together, these findings reveal RBP4 as a novel modulator promoting cardiomyocyte pyroptosis via interaction with NLRP3 in AMI. Therefore, targeting cardiac RBP4 might represent a viable strategy for the prevention of cardiac injury in patients with AMI.
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- 2021
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18. Functional imaging in youth at risk for transdiagnostic serious mental illness: Initial results from the PROCAN study.
- Author
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Metzak PD, Addington J, Hassel S, Goldstein BI, MacIntosh BJ, Lebel C, Wang JL, Kennedy SH, MacQueen GM, and Bray S
- Subjects
- Adolescent, Canada, Emotions, Humans, Magnetic Resonance Imaging, Motivation, Mental Disorders diagnostic imaging
- Abstract
Background: In their early stages, serious mental illnesses (SMIs) are often indistinguishable from one another, suggesting that studying alterations in brain activity in a transdiagnostic fashion could help to understand the neurophysiological origins of different SMI. The purpose of this study was to examine brain activity in youth at varying stages of risk for SMI using functional magnetic resonance imaging tasks (fMRI) that engage brain systems believed to be affected., Methods: Two hundred and forty three participants at different stages of risk for SMI were recruited to the Canadian Psychiatric Risk and Outcome (PROCAN) study, however only 179 were scanned. Stages included asymptomatic participants at no elevated risk, asymptomatic participants at elevated risk due to family history, participants with undifferentiated general symptoms of mental illness, and those experiencing attenuated versions of diagnosable psychiatric illnesses. The fMRI tasks included: (1) a monetary incentive delay task; (2) an emotional Go-NoGo and (3) an n-back working memory task., Results: Strong main effects with each of the tasks were found in brain regions previously described in the literature. However, there were no significant differences in brain activity between any of the stages of risk for SMI for any of the task contrasts, after accounting for site, sex and age. Furthermore, results indicated no significant differences even when participants were dichotomized as asymptomatic or symptomatic., Conclusions: These results suggest that univariate BOLD responses during typical fMRI tasks are not sensitive markers of SMI risk and that further study, particularly longitudinal designs, will be necessary to understand brain changes underlying the early stages of SMI., (© 2020 John Wiley & Sons Australia, Ltd.)
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- 2021
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19. Clinical staging for youth at-risk for serious mental illness: A longitudinal perspective.
- Author
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Addington J, Liu L, Farris MS, Goldstein BI, Wang JL, Kennedy SH, Bray S, Lebel C, and MacQueen G
- Subjects
- Adolescent, Adult, Anxiety, Anxiety Disorders, Child, Humans, Young Adult, Bipolar Disorder, Mental Disorders diagnosis, Psychotic Disorders diagnosis
- Abstract
Objective: The objective of this study was to identify a sample of youth in distinct stages of risk for the development of a serious mental illness (SMI) according to a published clinical staging model and to follow this sample longitudinally to determine clinical changes over time. This article reports the 6- and 12-month follow-up of the cohort., Methods: This study recruited 243 youth, ages 12 to 25. The sample included (a) 42 healthy controls, (b) 41 nonhelpseeking individuals with no mental illness but some risk of SMI, for example, having a first-degree relative with an SMI (stage 0), (c) 53 youth experiencing distress and mild symptoms of anxiety or depression (stage 1a), and (d) 107 youth with attenuated symptoms of SMIs such as bipolar disorder or psychosis (stage 1b). Participants completed a range of measures assessing depression, anxiety, mania, suicide ideation, attenuated psychotic symptoms, negative symptoms, anhedonia and beliefs about oneself at baseline, 6- and 12-months., Results: There were few changes for healthy controls and stage 0 participants, although approximately 7% did move to a symptomatic stage within 12-months. Of stage 1a participants, 50% remained symptomatic, with 7.5% moving to stage 1b or developing a SMI. Approximately 9% of stage 1byouth developed a SMI within 12-months and approximately one-third had remission of symptoms during the follow-up., Conclusions: Results suggest that the implementation of a transdiagnostic staging model may be useful in youth mental health and support consideration of clinical stage-based treatment for youth with early features of risk., (© 2020 John Wiley & Sons Australia, Ltd.)
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- 2021
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20. Endothelial genetic deletion of CD147 induces changes in the dual function of the blood-brain barrier and is implicated in Alzheimer's disease.
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Wang H, Lv JJ, Zhao Y, Wei HL, Zhang TJ, Yang HJ, Chen ZN, and Jiang JL
- Abstract
Aims: The blood-brain barrier (BBB) is a specialized and indispensable structure in brain blood vessels that is damaged during Alzheimer's disease (AD). CD147 is expressed on the BBB and deeply engaged in the AD pathological process. In this study, we aimed to provide a better understanding of the roles of CD147 in BBB function in health and neurodegenerative disease., Methods and Results: We measured CD147 expression in mouse brains and demonstrated that CD147 is exclusively expressed in brain endothelial cells (BECs), and its expression decreases with age. After constructing endothelial-specific CD147 knockout mice, we performed RNA-sequencing on BECs isolated from mice of different ages as well as a range of database analyses. We found that endothelial CD147 is essential for the dual functions of the BBB, including barrier maintenance and transporter regulation. This study also shows that CD147 plays a pivotal role in neurodegenerative diseases, particularly in AD., Conclusions: Our findings suggested that targeting CD147 in BECs may represent a novel therapeutic strategy, which promoted the design of future experimental investigations and the mechanistic understanding of neurodegenerative diseases., (© 2021 The Authors. CNS Neuroscience & Therapeutics published by John Wiley & Sons Ltd.)
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- 2021
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21. TGF-β isoforms inhibit hepatitis C virus propagation in transforming growth factor beta/SMAD protein signalling pathway dependent and independent manners.
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Zou LL, Li JR, Li H, Tan JL, Wang MX, Liu NN, Gao RM, Yan HY, Wang XK, Dong B, Li YH, and Peng ZG
- Subjects
- Amino Acid Sequence, Antiviral Agents pharmacology, Cell Line, Tumor, Hepatitis C pathology, Humans, Protein Conformation, alpha-Helical, Protein Interaction Domains and Motifs, Protein Isoforms metabolism, Protein Isoforms pharmacology, RNA, Viral, Transforming Growth Factor beta1 metabolism, Transforming Growth Factor beta1 pharmacology, Transforming Growth Factor beta2 metabolism, Transforming Growth Factor beta2 pharmacology, Transforming Growth Factor beta3 metabolism, Transforming Growth Factor beta3 pharmacology, Virus Internalization drug effects, Hepacivirus drug effects, Hepacivirus growth & development, Hepatitis C virology, Signal Transduction, Smad Proteins metabolism, Transforming Growth Factor beta metabolism, Transforming Growth Factor beta pharmacology
- Abstract
Transforming growth factor beta (TGF-β) plays an important role in the viral liver disease progression via controlling viral propagation and mediating inflammation-associated responses. However, the antiviral activities and mechanisms of TGF-β isoforms, including TGF-β1, TGF-β2 and TGF-β3, remain unclear. Here, we demonstrated that all of the three TGF-β isoforms were increased in Huh7.5 cells infected by hepatitis C virus (HCV), but in turn, the elevated TGF-β isoforms could inhibit HCV propagation with different potency in infectious HCV cell culture system. TGF-β isoforms suppressed HCV propagation through interrupting several different stages in the whole HCV life cycle, including virus entry and intracellular replication, in TGF-β/SMAD signalling pathway-dependent and TGF-β/SMAD signalling pathway-independent manners. TGF-β isoforms showed additional anti-HCV activities when combined with each other. However, the elevated TGF-β1 and TGF-β2, not TGF-β3, could also induce liver fibrosis with a high expression of type I collagen alpha-1 and α-smooth muscle actin in LX-2 cells. Our results showed a new insight into TGF-β isoforms in the HCV-related liver disease progression., (© 2021 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd.)
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- 2021
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22. Does adherence to lipid-lowering medications improve cancer survival? A nationwide study of breast and colorectal cancer, and melanoma.
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Feng JL and Qin X
- Subjects
- Australia epidemiology, Female, Humans, Lipids, Medication Adherence, Breast Neoplasms drug therapy, Colorectal Neoplasms drug therapy, Melanoma drug therapy
- Abstract
Aims: Inconclusive findings of lipid-lowering medications (LLMs) on cancer survival benefit require more evidence. We tested the hypothesis that adherence to this drug is associated with reduced cancer-specific mortality in a homogeneous population who had used this drug before cancer diagnosis., Methods: The Australian Cancer Database was linked to the Pharmaceutical Benefits Scheme database, and to the National Death Index (up to 2015). Medication adherence was calculated by proportion of days covered. Cox regression models with time-varying covariates were used to derive multivariable-adjusted cause-specific hazard ratio (HR) and 95% confidence interval (CI) for the associations between adherence to LLMs, statins, lipophilic, and hydrophilic statins and cancer-specific mortality., Results: From 2003 to 2013, 3 separate cohorts of 20 046, 11 719 and 6430 female patients with newly diagnosed breast, colorectal cancer, and melanoma respectively were identified. The 1-year adherence was similar at 1-year prediagnosis in the 3 cohorts, on average 82%. Each 10% increase in 1-year adherence to LLMs was inversely associated with cancer-specific mortality among women with breast cancer (fully adjusted HR = 0.92, 95% CI 0.91-0.93), colorectal cancer (fully adjusted HR = 0.92, 95% CI 0.91-0.93), or melanoma (fully adjusted HR = 0.97, 95% CI 0.94-1.00). The reductions in cancer-specific mortality were more pronounced for women who adhered to lipophilic than hydrophilic statins in all 3 cancers albeit not statistically significant for melanoma., Conclusion: Among LLM users, adherence to this drug is associated with a decrease in cancer-specific mortality. If confirmed, LLMs could be considered as an adjuvant cancer therapy to improve prognosis in cancer survivors., (© 2020 British Pharmacological Society.)
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- 2021
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23. Asymmetric, multifocal musculoskeletal pain preceding the onset of progressive supranuclear palsy: A case report.
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Fang Y, Jin CY, Zheng R, Wu JM, Zhang BR, and Pu JL
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- Aged, Diagnosis, Differential, Female, Humans, Musculoskeletal Pain etiology, Supranuclear Palsy, Progressive complications, Musculoskeletal Pain diagnostic imaging, Supranuclear Palsy, Progressive diagnostic imaging
- Published
- 2021
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24. Long noncoding RNAs: Important participants and potential therapeutic targets for myocardial ischaemia reperfusion injury.
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Ding YM, Chan EC, Liu LC, Liu ZW, Wang Q, Wang JL, Cui XP, Jiang F, and Guo XS
- Subjects
- Humans, Animals, Molecular Targeted Therapy, Myocytes, Cardiac metabolism, Myocytes, Cardiac pathology, RNA, Long Noncoding genetics, RNA, Long Noncoding metabolism, Myocardial Reperfusion Injury genetics, Myocardial Reperfusion Injury metabolism, Myocardial Reperfusion Injury pathology
- Abstract
Myocardial ischaemia reperfusion (I/R) injury is one of the leading causes of coronary artery disease-associated morbidity and mortality. While different strategies have been used to limit I/R injuries, cardiac functions often do not recover to the normal level as anticipated. Recent studies have pointed to important roles of long noncoding RNAs (lncRNAs) in the development of myocardial I/R injury. LncRNA is a class of RNA molecules of more than 200 nucleotides in length which are not translated into proteins. I/R causes dysregulation of lncRNA expression in cardiomyocytes, thereby affecting multiple cellular functions including mitochondrial homeostasis, apoptosis, necrosis and autophagy, suggesting that manipulating lncRNAs may be of great potential in counteracting I/R injury-induced myocardial dysfunctions. In this review, we provide an updated summary on our knowledge about contributions of lncRNAs to the development of I/R injury, with an emphasis on the functional links between several well established cardiac lncRNAs and regulation of cellular outcomes post I/R., (© 2020 John Wiley & Sons Australia, Ltd.)
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- 2020
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25. The lack of association between ubiquinol-cytochrome c reductase core protein I (UQCRC1) variants and Parkinson's disease in an eastern Chinese population.
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Lin ZH, Zheng R, Ruan Y, Gao T, Jin CY, Xue NJ, Dong JX, Yan YP, Tian J, Pu JL, and Zhang BR
- Subjects
- China epidemiology, Female, Humans, Male, Asian People genetics, Electron Transport Complex III genetics, Genetic Association Studies methods, Genetic Variation genetics, Parkinson Disease epidemiology, Parkinson Disease genetics
- Published
- 2020
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26. Genetic testing of FUS, HTRA2, and TENM4 genes in Chinese patients with essential tremor.
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Yan YP, Xu CY, Gu LY, Zhang B, Shen T, Gao T, Tian J, Pu JL, Yin XZ, Zhang BR, and Zhao GH
- Subjects
- Adolescent, Adult, Aged, Child, Essential Tremor diagnosis, Essential Tremor epidemiology, Female, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide genetics, Young Adult, Asian People genetics, Essential Tremor genetics, Genetic Testing methods, High-Temperature Requirement A Serine Peptidase 2 genetics, Membrane Glycoproteins genetics, RNA-Binding Protein FUS genetics
- Abstract
Introduction: Essential tremor (ET) is one of the most prevalent movement disorders. The genetic etiology of ET has not been well defined although a significant proportion (≥50%) are familial cases. Linkage analysis and genome-wide association studies (GWASs) have identified several risk variants. In recent years, whole-exome sequencing of ET has revealed several specific causal variants in FUS (p.Q290X), HTRA2 (p.G399S), and TENM4 (c.4324 G>A, c.4100C>A, and c.3412G>A) genes., Objective: To investigate the genetic contribution of these three genes to ET, the protein-coding sequences of FUS, HTRA2, and TENM4 were analyzed in a total of 238 ET patients and 272 controls from eastern China using direct Sanger sequencing., Results: We identified two synonymous coding single nucleotide polymorphisms (SNPs), rs741810 and rs1052352 in FUS, and three previously reported synonymous SNPs, rs11237621, rs689369, and rs2277277 in TENM4. No nonsynonymous exonic variants were identified in these subjects. We found that the frequency of the rs1052352C allele was significantly higher (P = .001) in the ET group than in the control group., Conclusion: Overall, our findings suggest that rs1052352 of FUS might contribute to ET risk in Chinese population., (© 2020 The Authors. CNS Neuroscience & Therapeutics Published by John Wiley & Sons Ltd.)
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- 2020
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27. Antitumour properties based on the self-assembly of camptothecin and carbamoylmannose conjugates.
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Wang JL, Wang KX, Han TL, Li JM, He X, Rong RX, Cao ZR, Li XL, and Wang KR
- Subjects
- A549 Cells, Antineoplastic Agents pharmacology, Apoptosis drug effects, Camptothecin pharmacology, Drug Compounding, HeLa Cells, Humans, MCF-7 Cells, Solubility, Water, Antineoplastic Agents chemical synthesis, Camptothecin chemical synthesis, Mannose chemistry, Methylurea Compounds chemistry
- Abstract
Camptothecin (CPT) and its analogues show potent antitumour activity. However, poor water solubility and severe side effects have restricted their applications in clinical practice. In this paper, a novel self-assembly based on camptothecin and carbamoylmannose conjugates (CPT-Man) was constructed. The self-assembly increased the water solubility of camptothecin to 0.64 mg/ml and antitumour activity. Moreover, CPT-Man could induce obvious cancer cell apoptosis. This work provides a new approach for exploring carbohydrate-modified antitumour properties by self-assembled CPT drugs., (© 2020 John Wiley & Sons A/S.)
- Published
- 2020
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28. Mutation topography and risk stratification for de novo acute myeloid leukaemia with normal cytogenetics and no nucleophosmin 1 (NPM1) mutation or Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD).
- Author
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Zhou YL, Wu LX, Peter Gale R, Wang ZL, Li JL, Jiang H, Jiang Q, Jiang B, Cao SB, Lou F, Sun Y, Wang CC, Liu YR, Wang Y, Chang YJ, Xu LP, Zhang XH, Liu KY, Ruan GR, and Huang XJ
- Subjects
- Adolescent, Adult, Aged, Female, Humans, Leukemia, Myeloid, Acute pathology, Male, Middle Aged, Mutation, Nucleophosmin, Tandem Repeat Sequences, Young Adult, Cytogenetic Analysis methods, Leukemia, Myeloid, Acute genetics
- Abstract
About 25% of patients with newly diagnosed acute myeloid leukaemia (AML) have normal cytogenetics and no nucleophosmin 1 (NPM1) mutation or Fms-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD). The prognosis and best therapy for these patients is controversial. We evaluated 158 newly diagnosed adults with this genotype who achieved histological complete remission within two cycles of induction therapy and were assigned to two post-remission strategies with and without an allotransplant. Targeted regional sequencing at diagnosis was performed and data were used to estimate their prognosis, including relapse and survival. In multivariable analyses, having wild-type or mono-allelic mutated CCAAT/enhancer-binding protein alpha (CEBPA) [hazard ratio (HR) 2·39, 95% confidence interval (CI) 1·08-5·30; P = 0·032), mutated NRAS (HR 2·67, 95% CI 1·36-5·25; P = 0·004), mutated colony-stimulating factor 3 receptor (CSF3R) (HR 2·85, 95% CI 1·12-7·27; P = 0·028) and a positive measurable residual disease (MRD)-test after the second consolidation cycle (HR 2·88, 95% CI 1·32-6·30; P = 0·008) were independently correlated with higher cumulative incidence of relapse (CIR). These variables were also significantly associated with worse survival (HR 3·02, 95% CI 1·17-7·78, P = 0·022; HR 3·62, 95% CI 1·51-8·68, P = 0·004; HR 3·14, 95% CI 1·06-9·31, P = 0·039; HR 4·03, 95% CI 1·64-9·89, P = 0·002; respectively). Patients with ≥1 of these adverse-risk variables benefitted from a transplant, whereas the others did not. In conclusion, we identified variables associated with CIR and survival in patients with AML and normal cytogenetics without a NPM1 mutation or FLT3-ITD., (© 2020 British Society for Haematology and John Wiley & Sons Ltd.)
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- 2020
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29. Assessment of three essential tremor genetic loci in sporadic Parkinson's disease in Eastern China.
- Author
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Gao T, Wu J, Zheng R, Fang Y, Jin CY, Ruan Y, Cao J, Tian J, Pu JL, and Zhang BR
- Subjects
- Aged, China epidemiology, Cohort Studies, Essential Tremor diagnosis, Essential Tremor epidemiology, Female, Humans, Male, Middle Aged, Parkinson Disease diagnosis, Parkinson Disease epidemiology, Essential Tremor genetics, Excitatory Amino Acid Transporter 2 genetics, Genetic Loci genetics, Parkinson Disease genetics, Polymorphism, Single Nucleotide genetics
- Abstract
Objective: The aim of this study was to investigate potential genetic overlap between essential tremor and Parkinson's disease in a cohort of 825 subjects from an Eastern Chinese population., Methods: A total of 441 Parkinson's disease patients and 384 healthy controls were recruited. The MassARRAY System was used to detect three essential tremor-related single nucleotide polymorphisms. Odds ratio (OR) and 95% confidential interval (CI) were calculated to assess the relationship between polymorphisms and Parkinson's disease susceptibility., Results: Our results demonstrated that the odds ratios of rs3794087 of SLC1A2, rs9652490 of LINGO1, and rs17590046 of PPARGC1A were 0.71 (95% CI = 0.55-0.91), 0.99 (95% CI = 0.78-1.26), and 0.88 (95% CI = 0.62-1.25), respectively., Conclusion: An essential tremor SNP (rs3794087 of SLC1A2) is associated with a decreased risk of PD in the Eastern Han Chinese population, while rs9652490 (LINGO1) and rs17590046 (PPARGC1A) do not show an association., (© 2019 The Authors. CNS Neuroscience & Therapeutics Published by John Wiley & Sons Ltd.)
- Published
- 2020
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30. Reversible Parkinsonism caused by Influenza B-associated encephalitis affecting bilateral basal ganglia: A case report.
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Zhu YL, Guo XM, Qin ZB, Zhou ZJ, Cao J, Wu JM, and Pu JL
- Subjects
- Basal Ganglia Diseases etiology, Encephalitis etiology, Humans, Influenza, Human complications, Male, Middle Aged, Parkinsonian Disorders etiology, Basal Ganglia Diseases diagnostic imaging, Encephalitis diagnostic imaging, Influenza B virus isolation & purification, Influenza, Human diagnostic imaging, Parkinsonian Disorders diagnostic imaging
- Published
- 2020
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31. Cardiac manifestations and gene mutations of patients with RASopathies in Taiwan.
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Lee CL, Tan LTH, Lin HY, Hwu WL, Lee NC, Chien YH, Chuang CK, Wu MH, Wang JK, Chu SY, Lin JL, Lo FS, Su PH, Hsu CC, Ko YY, Chen MR, Chiu HC, and Lin SP
- Subjects
- Cardiomyopathy, Hypertrophic genetics, Cardiomyopathy, Hypertrophic physiopathology, Costello Syndrome genetics, Costello Syndrome physiopathology, Cross-Sectional Studies, Developmental Disabilities classification, Developmental Disabilities pathology, Ectodermal Dysplasia genetics, Ectodermal Dysplasia physiopathology, Facies, Failure to Thrive genetics, Failure to Thrive physiopathology, Female, Heart Defects, Congenital physiopathology, Heart Septal Defects, Atrial genetics, Heart Septal Defects, Atrial physiopathology, Humans, LEOPARD Syndrome genetics, LEOPARD Syndrome physiopathology, Male, Noonan Syndrome physiopathology, Retrospective Studies, ras Proteins genetics, Developmental Disabilities genetics, Heart Defects, Congenital genetics, Noonan Syndrome genetics, Protein Tyrosine Phosphatase, Non-Receptor Type 11 genetics
- Abstract
RASopathies are developmental diseases caused by mutations in rat sarcoma-mitogen-activated protein kinase pathway genes. These disorders, such as Noonan syndrome (NS) and NS-related disorders (NSRD), including cardio-facio-cutaneous (CFC) syndrome, Costello syndrome (CS), and NS with multiple lentigines (NSML; also known as LEOPARD syndrome), have a similar systemic phenotype. A wide spectrum of congenital heart disease and hypertrophic cardiomyopathy (HCMP) can exhibit major associated characteristics. A retrospective study was conducted at the Mackay Memorial Hospital, National Taiwan University Hospital, Buddhist Tzu-Chi General Hospital, Chang-Gung Memorial Hospital, Taichung Veterans General Hospital, and Chung Shan Medical University Hospital from January 2007 to December 2018. We reviewed the clinical records of 76 patients with a confirmed molecular diagnosis of RASopathies, including NS, CS, CFC syndrome, and NSML. We evaluated the demographic data and medical records with clinical phenotypes of cardiac structural anomalies using cross-sectional and color Doppler echocardiography, electrocardiographic findings, and follow-up data. A total of 47 (61.8%) patients had cardiac abnormalities. The prevalence of cardiac lesions according to each syndrome was 62.7, 50.0, 60.0, and 66.7% in patients with NS, CFC syndrome, CS, and NSML, respectively. An atrial septal defect was usually combined with other cardiac abnormalities, such as pulmonary stenosis (PS), HCMP, ventricular septal defect, or patent ductus arteriosus. Patients with NS most commonly showed PS. In patients with NSRD and cardiac abnormalities, HCMP (29.4%) was the most commonly observed cardiac lesion. PTPN11 was also the most frequently detected mutation in patients with NS and NSRD. Cardiac abnormalities were the most common symptoms observed in patients with RASopathies at the time of their first hospital visit. Performing precise analyses of genotype-cardiac phenotype correlations in a larger cohort will help us accurately diagnose RASopathy as soon as possible., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2020
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32. The bifunctional SDF-1-AnxA5 fusion protein protects cardiac function after myocardial infarction.
- Author
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Huang FY, Xia TL, Li JL, Li CM, Zhao ZG, Lei WH, Chen L, Liao YB, Xiao D, Peng Y, Wang YB, Liu XJ, and Chen M
- Subjects
- Administration, Intravenous, Animals, Cell Death drug effects, Cell Survival drug effects, Chemotaxis drug effects, Human Umbilical Vein Endothelial Cells drug effects, Humans, Male, Mice, Inbred C57BL, Myocardial Infarction pathology, Myocardial Ischemia physiopathology, Myocardium metabolism, Myocardium pathology, Neovascularization, Physiologic drug effects, Protein Binding drug effects, Receptors, Chemokine metabolism, Recombinant Fusion Proteins administration & dosage, Recombinant Fusion Proteins pharmacology, Signal Transduction drug effects, Annexin A5 metabolism, Chemokine CXCL12 metabolism, Myocardial Infarction drug therapy, Myocardial Infarction physiopathology, Recombinant Fusion Proteins therapeutic use
- Abstract
Stromal cell-derived factor-1 (SDF-1) is a well-characterized cytokine that protects heart from ischaemic injury. However, the beneficial effects of native SDF-1, in terms of promoting myocardial repair, are limited by its low concentration in the ischaemic myocardium. Annexin V (AnxA5) can precisely detect dead cells in vivo. As massive cardiomyocytes die after MI, we hypothesize that AnxA5 can be used as an anchor to carry SDF-1 to the ischaemic myocardium. In this study, we constructed a fusion protein consisting of SDF-1 and AnxA5 domains. The receptor competition assay revealed that SDF-1-AnxA5 had high binding affinity to SDF-1 receptor CXCR4. The treatment of SDF-1-AnxA5 could significantly promote phosphorylation of AKT and ERK and induce chemotactic response, angiogenesis and cell survival in vitro. The binding membrane assay and immunofluorescence revealed that AnxA5 domain had the ability to specifically recognize and bind to cells injured by hypoxia. Furthermore, SDF-1-AnxA5 administered via peripheral vein could accumulate at the infarcted myocardium in vivo. The treatment with SDF-1-AnxA5 attenuated cell apoptosis, enhanced angiogenesis, reduced infarcted size and improved cardiac function after mouse myocardial infarction. Our results suggest that the bifunctional SDF-1-AnxA5 can specifically bind to dead cells. The systemic administration of bifunctional SDF-1-AnxA5 effectively provides cardioprotection after myocardial infarction., (© 2019 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)
- Published
- 2019
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33. Large-scale distribution of bacterial communities in the Qaidam Basin of the Qinghai-Tibet Plateau.
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Xing R, Gao QB, Zhang FQ, Wang JL, and Chen SL
- Subjects
- Hydrogen-Ion Concentration, Magnesium analysis, Metagenomics, Phylogeny, Soil chemistry, Spatial Analysis, Tibet, Bacteria classification, Bacteria genetics, Microbiota, Soil Microbiology
- Abstract
Many studies have investigated patterns of soil microbial communities over large spatial scales. However, these studies mainly focused on a few sites. Here, we studied the near-surface (0-30 cm) soil microbial communities of 35 soil samples collected from most of the areas of the Qaidam Basin, which is the largest basin on the Qinghai-Tibet Plateau. A total of 32 phyla and 838 genera were detected from all the samples, in which Actinobacteria, Proteobacteria, Bacteroidetes, and Acidobacteria were the most dominant and cosmopolitan phyla. The most abundant phyla (relative abundance > 5%) detected in all 35 soil samples were also the most dominant, which could be explained by their great dispersal ability. The microbial community structures correlated strongly with variations in pH and Mg
2+ and were distinct between the high Mg2+ content (>20 g/kg) samples and other samples (Acidobacteria, Actinobacteria, and Chloroflexi were significantly less abundant in the high Mg2+ content group, but the abundance of Firmicutes was significantly greater). Finally, the microbial spatial pattern was influenced by both the local environment and spatial distance, but environmental factors were the primary drivers of microbial spatial patterns in the Qaidam Basin., (© 2019 The Authors. MicrobiologyOpen published by John Wiley & Sons Ltd.)- Published
- 2019
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34. Identification of nacre matrix protein genes hic14 and hic19 and their roles in crystal growth and pearl formation in the mussel Hyriopsis cumingii.
- Author
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Jin C, Ren HY, Pu JW, Liu XJ, and Li JL
- Subjects
- Animals, Bivalvia chemistry, Cloning, Molecular, Crystallization, Real-Time Polymerase Chain Reaction, Sequence Analysis, DNA, Bivalvia genetics, Bivalvia metabolism, Extracellular Matrix Proteins genetics, Extracellular Matrix Proteins metabolism
- Abstract
Biological mineralization is a highly programmed process in which inorganic minerals reassociate under the strict control of the extracellular matrix to form minerals with special functions and patterns. Shells are biominerals, and their synthesis is finely regulated by organic matrix including matrix proteins, polysaccharides, lipids, pigments, free amino acids, and small peptides. In this study, two matrix protein genes, hic14 and hic19, were isolated from the mantle of the mussel Hyriopsis cumingii. Tissue expression analysis showed that both proteins were expressed mainly in the mantle, and in situ hybridization of mantle tissues showed that they were specifically expressed in the dorsal epithelial cells of mantle pallial. Therefore, hic14 and hic19 were both nacreous layer matrix proteins. In the pearl insertion experiment, hic14 and hic19 kept low expression during pearl sac formation and disordered calcium carbonate deposition, and increased significantly during pearl nacre accumulation, which showed that both proteins participated in the mineralization of pearl nacre. In the RNA interference experiment, shell nacre tablet growth was inhibited after crystal nucleation due to the decreased expression of hic14, and crystal morphology and arrangement of nacre were highly modified after expression of hic19 was inhibited. These results provided further evidence that both hic14 and hic19 participated in nacreous layer biomineralization., (© 2019 International Union of Biochemistry and Molecular Biology, Inc.)
- Published
- 2019
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35. Dimorphic autoantigenic and protective effects of Reg2 peptide in the treatment of diabetic β-cell loss.
- Author
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Yu L, Li X, Zhang Z, Du P, Liu JL, Li Y, Yin T, Yu W, Sun H, Wang M, and Luo C
- Subjects
- Animals, Apoptosis drug effects, Cells, Cultured, Diabetes Mellitus, Experimental chemically induced, Diabetes Mellitus, Experimental pathology, Insulin-Secreting Cells pathology, Insulin-Secreting Cells physiology, Islets of Langerhans pathology, Islets of Langerhans physiology, Male, Mice, Mice, Inbred BALB C, Pancreatitis-Associated Proteins chemistry, Peptide Fragments pharmacology, Protective Agents pharmacology, Recombinant Proteins chemistry, Recombinant Proteins pharmacology, Streptozocin, Autoantigens blood, Cytoprotection drug effects, Diabetes Mellitus, Experimental drug therapy, Insulin-Secreting Cells drug effects, Islets of Langerhans drug effects, Pancreatitis-Associated Proteins pharmacology
- Abstract
Aims: The potential effect of regenerating (Reg) proteins in the treatment of diabetes has been indicated in the past decade, but the clinical use of Reg proteins requires more advances in translational medicine. In the present study, we produced recombinant regenerating protein 2 (rReg2), to prove its protective effect against streptozocin (STZ)-induced diabetes in BALB/c mice., Materials and Methods: rReg2 was administrated in STZ-induced diabetic mice. Blood glucose, body weight, serum insulin and islet β-cell loss were determined. However, Reg2 has also been reported to serve as an autoantigen that induces autoimmune attacks on islets and aggravates diabetic development in non-obese diabetic mice. To address this contradiction, complete Freund's adjuvant was injected to generate a model that was hypersensitive to Reg2. In this model, islet CD8 T-cell infiltration, serum Reg2 antibody and interleukin (IL)-4 and IL-10, and splenic CD4+/interferon (IFN)-γ+ T cells were determined., Results: Direct rReg2 pretreatment preserved islet β-cell mass against STZ and improved glycaemia, body weight and serum insulin content. The protection against cell death was further confirmed in cultured mouse islets and MIN6 cells. On the other hand, significant elevations of serum Reg2 antibody and splenic CD4+/IFN-γ+ T cells, and decreases in serum IL-4 and IL-10 were detected in rReg2-vaccinated mice, which may contribute to the accelerated diabetes. Interestingly, these mice, upon further rReg2 treatment, exhibited alleviated diabetic conditions with less islet CD8+ T-cell infiltration., Conclusion: rReg2 treatment ameliorated STZ-induced diabetes in normal BALB/c mice. By contrast, rReg2 vaccination exacerbated, but further rReg2 treatment alleviated, the severity of STZ-induced diabetes. Thus, the protective effect of rReg2 is predominant over the autoantigenic β-cell destruction, supporting the potential of rReg2 in the clinical treatment of diabetes., (© 2019 John Wiley & Sons Ltd.)
- Published
- 2019
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36. Association of interleukin-27 gene polymorphisms with susceptibility to HIV infection and disease progression.
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Pang XX, Luo SD, Zhang T, Shi F, Wang CF, Chen XH, Wei YX, Qin L, Wei JX, Luo XQ, and Wang JL
- Subjects
- Adult, Disease Progression, Female, Gene Frequency, Genotype, HIV Infections virology, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide genetics, Genetic Association Studies, Genetic Predisposition to Disease, HIV Infections genetics, Interleukins genetics
- Abstract
Interleukin-27 (IL-27) gene polymorphisms are linked to infectious disease susceptibility and IL-27 plasma level is associated with HIV infection. Therefore, we aimed to investigate the association between IL-27 polymorphisms and susceptibility to HIV infection and disease progression. A total of 300 patients with HIV infection (48 long-term nonprogressors and 252 typical progressors) and 300 healthy controls were genotyped for three IL-27 polymorphisms, rs17855750, rs181206, rs40837 which were performed by using multiple single nucleotide primer extension technique. Significant association was found between IL-27 rs40837 polymorphisms with susceptibility to HIV infection (AG vs AA: adjusted OR = 1.60, 95% CI, 1.11-2.30, P = 0.012; AG+GG vs AA: adjusted OR = 1.44, 95% CI, 1.02-2.03, P = 0.038) and disease progression (LTNP: AG vs AA: adjusted OR = 2.33, 95% CI, 1.13-4.80, P = 0.021; TP: AG vs AA: adjusted OR = 1.50, 95% CI, 1.04-2.24, P = 0.030). Serum IL-27 levels were significantly lower in cases compared to controls (P < 0.001). There were lower serum IL-27 levels in TPs than in LTNPs (P < 0.001). We further found that LTNPs with rs40837 AG or GG genotype had lower serum IL-27 levels than with AA genotype (P < 0.05). The CD4
+ T counts in cases were significantly lower than controls (P < 0.001). In contrast, individuals with rs40837 AG genotype had lower CD4+ T counts than with AA genotype in cases (P < 0.05). In addition, CD4+ T counts in TPs were significantly lower than LTNPs (P < 0.001). IL-27 rs40837 polymorphism might influence the susceptibility to HIV infection and disease progression probably by regulating the level of serum IL-27 or the quantity of CD4+ T., (© 2018 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)- Published
- 2019
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37. Echocardiographic strain in hypertrophic cardiomyopathy and hypertensive left ventricular hypertrophy.
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Sun JP, Xu TY, Ni XD, Yang XS, Hu JL, Wang SC, Li Y, Bahler RC, and Wang JG
- Subjects
- Female, Heart Ventricles diagnostic imaging, Heart Ventricles physiopathology, Humans, Hypertrophy, Left Ventricular pathology, Male, Middle Aged, Cardiomyopathy, Hypertrophic diagnostic imaging, Cardiomyopathy, Hypertrophic physiopathology, Echocardiography methods, Hypertrophy, Left Ventricular diagnostic imaging, Hypertrophy, Left Ventricular physiopathology
- Abstract
Background: The myocardial structure differs between secondary left ventricular hypertrophy (LVH) and hypertrophic cardiomyopathy (HCM). We investigated left ventricular function of these two types of hypertrophy using multilayer strain analysis with two-dimensional echocardiography., Methods: Transthoracic echocardiography (Vivid-E9) was performed in 240 patients with preserved left ventricular ejection fraction (LVEF ≥50%) and with either HCM (n = 80, 63 men, age 49.8 ± 14.1 years), hypertensive LVH (n = 80, 63 men, age 51.4 ± 13.3 years) or normal blood pressure and left ventricular structure (n = 80, 63 men, 50.8 ± 12.4 years). Quantitative multilayer longitudinal strain (LS), circumferential strain (CS), and radial strain (RS) were analyzed. The ratio of endo-/epi-myocardial strain was calculated., Results: Longitudinal strain was significantly (P < 0.001) lower in HCM patients than normal controls (15.2 ± 4.2% vs 23.1 ± 2.7%), especially in hypertrophic segments (14.5 ± 4.4% vs 17.2 ± 3.2% in nonhypertrophic segments, P < 0.01). LS was lower in patients with hypertensive LVH, similarly in all left ventricular segments (20.7 ± 3.7%, P < 0.001 vs controls). CS was lower in the mid- and epicardium (P < 0.01), but not endocardium in HCM (P = 0.4), and preserved in all myocardial layers in hypertensive LVH. The endo-/epi-myocardial ratios of both LS and CS were higher in HCM than hypertensive LVH (P < 0.01). RS was higher (P < 0.01) in HCM than hypertensive LVH and controls. Endocardial CS and global RS were correlated with LVEF (r ≥ 0.32, P < 0.01)., Conclusions: Hypertrophic cardiomyopathy patients had marked reductions in LS and CS, whereas patients with hypertensive LVH had less reduction in LS and preserved CS. The increased endo-/epi-myocardial ratios of LS and CS may be useful in differentiating HCM from hypertensive LVH., (© 2018 Wiley Periodicals, Inc.)
- Published
- 2019
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38. A novel nacre matrix protein hic24 in Hyriopsis cumingii is essential for calcium carbonate nucleation and involved in pearl formation.
- Author
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Liu X, Liu Z, Jin C, Li H, and Li JL
- Subjects
- Amino Acid Sequence, Animals, DNA, Complementary, Open Reading Frames, Protein Domains, Calcification, Physiologic physiology, Extracellular Matrix Proteins biosynthesis, Extracellular Matrix Proteins genetics, Gene Expression Regulation physiology, Nacre genetics, Nacre metabolism, Unionidae genetics, Unionidae metabolism
- Abstract
Matrix proteins play important roles in molluscan shell biomineralization, which helps in the understanding of mechanisms associated with pearl formation. In this study, we characterized the gene encoding a novel shell-matrix protein, hic24, in Hyriopsis cumingii and investigated its structure and function. The full cDNA sequence of hic24 is 756 bp, with an open reading frame of 654 bp encoding 217 amino acids, including a signal peptide of 18 amino acids. Sequence analysis revealed that the protein is ∼23.5 kDa, and that Gly accounted for 11.5% of the total amino acid content. Secondary structure prediction indicated a structure comprised predominantly by β-folds. Quantitative real-time polymerase chain reaction and in situ hybridization indicated that hic24 is expressed in the dorsal epithelial cells of the mantle, indicating hic24 as a nacreous-layer matrix protein. Additionally, hic24 expression patterns during pearl biomineralization showed that hic24 regulates the growth of the later nacreous layer. After attenuating hic24 expression by RNA interference in the mantle, we observed that hic24 plays a role in biomineralization of the shell nacre by inhibiting calcium carbonate nucleation., (© 2018 International Union of Biochemistry and Molecular Biology, Inc.)
- Published
- 2019
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39. AMP-activated protein kinase-dependent induction of autophagy by erythropoietin protects against spinal cord injury in rats.
- Author
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Wang P, Xie ZD, Xie CN, Lin CW, Wang JL, Xuan LN, Zhang CW, Wang Y, Huang ZH, and Teng HL
- Subjects
- Animals, Cell Hypoxia drug effects, Disease Models, Animal, Dose-Response Relationship, Drug, Enzyme Inhibitors pharmacology, Glucose deficiency, Locomotion drug effects, Male, Microtubule-Associated Proteins metabolism, PC12 Cells, Rats, Rats, Sprague-Dawley, Recovery of Function drug effects, Signal Transduction drug effects, AMP-Activated Protein Kinases metabolism, Autophagy drug effects, Erythropoietin therapeutic use, Neuroprostanes therapeutic use, Spinal Cord Injuries drug therapy, Spinal Cord Injuries pathology
- Abstract
Aims: Autophagy has been regarded as a promising therapeutic target for spinal cord injury (SCI). Erythropoietin (EPO) has been demonstrated to exhibit neuroprotective effects in the central nervous system (CNS); however, the molecular mechanisms of its protection against SCI remain unknown. This study aims to investigate whether the neuroprotective effects of EPO on SCI are mediated by autophagy via AMP-activated protein kinase (AMPK) signaling pathways., Methods: Functional assessment and Nissl staining were used to investigate the effects of EPO on SCI. Expressions of proteins were detected by Western blot and immunohistochemistry., Results: Treatment with EPO significantly reduced the loss of motor neurons and improved the functional recovery following SCI. Erythropoietin significantly enhanced the SCI-induced autophagy through activating AMPK and inactivating mTOR signaling. The inhibitor of AMPK, compound C, could block the EPO-induced autophagy and beneficial action on SCI, whereas the activator of AMPK, metformin, could mimic the effects of EPO. In the in vitro studies, EPO enhanced the hypoxia-induced autophagy in an AMPK-dependent manner., Conclusions: The AMPK-dependent induction of autophagy contributes to the neuroprotection of EPO on SCI., (© 2018 John Wiley & Sons Ltd.)
- Published
- 2018
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40. Association between polymorphisms in the promoter region of miR-17-92 cluster and systemic lupus erythematosus in a Chinese population.
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Wang R, Wang CF, Qin HM, Lu YL, Wei GJ, Huang HT, Xiang Y, Wang JL, Lan Y, and Wei YS
- Abstract
The aim of this study was to investigate the association of genetic polymorphisms in the promoter region of miR-17-92 with systemic lupus erythematosus (SLE). The gene polymorphism was analysed using SNaPshot in 312 SLE patients and 396 controls. Relative expression of miR-17-92 was measured by quantitative real-time PCR. Association was found between rs9515692 and a decreased risk of SLE (CT vs CC: OR = 0.65, 95%CI, 0.46-0.92, P = .014; CT+TT vs CC: OR = 0.64, 95%CI, 0.46-0.90, P = .009; T vs C: OR = 0.69, 95%CI, 0.52-0.92, P = .010, respectively). Haplotype analysis showed that C-G-G, C-A-A haplotypes were associated with an increased SLE risk (OR=4.46, 95%CI, 2.17-9.17, P < 0.001; OR=2.33, 95%CI, 1.44-3.76, P < 0.001, respectively). T allele and CT+TT genotypes in rs9515692 were associated with decreased risk of anti-dsDNA in SLE (CT+TT vs CC: OR = 0.42, 95%CI = 0.24-0.72, P = .002; T vs A: OR = 0.49, 95%CI = 0.31-0.79, P = .003). Moreover, rs9515692 CT+TT genotypes had a higher level of miR-17 as compared to CC genotype (P = .017). These findings suggest that the rs9515692 CT+TT genotypes were a protective factor for the susceptibility of SLE, probably by increasing the expression of miR-17., (© 2018 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)
- Published
- 2018
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41. Association between functional polymorphisms in IL-33/ST2 pathway and risk of osteosarcoma.
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Wang JL, Liu J, Xie KG, Lan CG, Lu L, and Tang YJ
- Abstract
Interleukin (IL)-33/ST2 pathway plays crucial roles in tumour growth and metastasis. The aim of this study was to investigate the association of two functional polymorphisms (IL-33 rs7025417 and ST2 rs3821204) with osteosarcoma (OS) risk. The rs7025417 and rs3821204 were genotyped by Taqman assay. IL-33mRNA and protein levels were measured by real-time PCR or enzyme-linked immunosorbent assay. The luciferase activity was measured by a dual luciferase reporter gene assay. The allele-specific transcription factor binding for rs7025417 was examined by ChIP-seq. The IL-33 rs7025417 CC genotype was significantly associated with a decreased risk of OS (CC vs TT: OR = 0.59, 95% CI, 0.41-0.85; recessive model: OR = 0.68, 95% CI, 0.49-0.94; C vs T: OR = 0.76, 95% CI, 0.63-0.91). Combined analysis showed that the IL-33 rs7025417CT/CC-ST2 rs3821204CG/CC and the IL-33 rs7025417CT/CC-ST2 rs3821204GG genotypes also had a decreased risk of OS. IL-33mRNA and protein levels in OS patients were significantly higher than controls. Patients with the rs7025417 CC genotype exhibited lower levels of IL-33 (P = .03). The rs7025417 C allele presented a lower transcriptional activity by disrupting the binding site to c-Myb (P < .01). Moreover, the rs3821204 G/C influences the transcriptional activity and ST2mRNA expression by altering the binding site of miR-202-3p. These findings suggest that the rs7025417 and rs3821204 may have a combined effect to protect against the development of OS by decreasing the expression levels of IL-33 or ST2., (© 2018 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)
- Published
- 2018
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42. Aldehyde dehydrogenase 2 Glu504Lys variant predicts a worse prognosis of acute coronary syndrome patients.
- Author
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Pan C, Zhao Y, Bian Y, Shang R, Wang JL, Xue L, Wei SJ, Zhang H, Chen YG, and Xu F
- Subjects
- Acute Coronary Syndrome pathology, Aged, Asian People, Female, Genetic Association Studies, Genotype, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide genetics, Risk Factors, Acute Coronary Syndrome genetics, Aldehyde Dehydrogenase, Mitochondrial genetics, Genetic Predisposition to Disease, Prognosis
- Abstract
Aldehyde dehydrogenase 2 (ALDH2) Glu504Lys variant was an independent risk factor for acute coronary syndrome (ACS). However, there are lacking researches about the relationship between the variant and prognosis of ACS. In the prospective study, 377 ACS patients were grouped into the wild-type (*1/*1) and the mutation (*2/*2 + *1/*2) groups according to genotype detection. Compared with the wild-type group, incidences of major adverse cardiac events (MACE) and cardiac death were both higher in the mutation group (9.2% vs 21.0%, P = .002; 5.2% vs 12.2%, P = .026); the MACE-free and the cardiac-death-free cumulative survival rates were obviously lower in the mutation group. Moreover, the mutant genotypes were associated with significantly increased risk of MACE and cardiac death (HR 2.443, 95%CI: 1.390-4.296, P = .002; HR 2.727, 95%CI: 1.303-5.708, P = .008). These results suggested that ALDH2 Glu504Lys variant could predict a worse prognosis of ACS patients., (© 2018 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)
- Published
- 2018
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43. Aberrant expressions of endometrial Id3 and CTLA-4 are associated with unexplained repeated implantation failure and recurrent miscarriage.
- Author
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Ding JL, Diao LH, Yin TL, Huang CY, Yin B, Chen C, Zhang Y, Li J, Cheng YX, Zeng Y, and Yang J
- Subjects
- Adult, Female, Humans, Pregnancy, Abortion, Habitual metabolism, CTLA-4 Antigen metabolism, Embryo Implantation, Endometrium metabolism, Inhibitor of Differentiation Proteins metabolism, Neoplasm Proteins metabolism
- Abstract
Inhibitor of DNA-binding protein 3 (Id3) is required for tumor angiogenesis and regulatory T-cell generation. However, the involvement of Id3 in unexplained repeated implantation failure (RIF) and recurrent miscarriage (RM) remains poorly understood. Immunohistochemistry was used to identify Id3, CD34, CTLA-4, and FOXP3 in the endometrium taken from the women with RIF (n=16), RM (n=16) and matched controls (n=8). The images were acquired and analyzed by the Vectra
® automated quantitative pathology imaging system. Percentage of Id3+ cells was significantly higher in the endometrium of women with RIF and RM compared with controls. The numbers of Id3+ and CD34+ vessels in the endometrium were positively correlated in control but not in RIF or RM. Percentages of CTLA-4+ cells, but not FOXP3+ cells, were significantly increased in the endometrium of RIF and RM women than those in controls. We found aberrant expressions of endometrial Id3 and CTLA-4 in peri-implantation endometrium of women with RIF and RM, suggesting the negative roles of these angiogenesis and immune tolerance markers involving in regulating endometrium receptivity., (© 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)- Published
- 2017
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44. Overexpression of microRNA-138 alleviates human coronary artery endothelial cell injury and inflammatory response by inhibiting the PI3K/Akt/eNOS pathway.
- Author
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Li JB, Wang HY, Yao Y, Sun QF, Liu ZH, Liu SQ, Zhuang JL, Wang YP, and Liu HY
- Subjects
- Antagomirs genetics, Antagomirs metabolism, Apoptosis drug effects, Caspase 3 genetics, Caspase 3 metabolism, Cell Line, Cell Proliferation drug effects, Chromones pharmacology, Coronary Vessels cytology, Coronary Vessels drug effects, Coronary Vessels metabolism, Endothelial Cells cytology, Endothelial Cells drug effects, Gene Expression Regulation, Humans, Interleukins genetics, Interleukins metabolism, MicroRNAs metabolism, Morpholines pharmacology, Nitric Oxide Synthase Type III antagonists & inhibitors, Nitric Oxide Synthase Type III metabolism, Phosphatidylinositol 3-Kinases metabolism, Phosphoinositide-3 Kinase Inhibitors, Proto-Oncogene Proteins c-akt antagonists & inhibitors, Proto-Oncogene Proteins c-akt metabolism, Proto-Oncogene Proteins c-bcl-2 genetics, Proto-Oncogene Proteins c-bcl-2 metabolism, Signal Transduction, Tumor Necrosis Factor-alpha genetics, Tumor Necrosis Factor-alpha metabolism, bcl-2-Associated X Protein genetics, bcl-2-Associated X Protein metabolism, Endothelial Cells metabolism, Lipoproteins, LDL pharmacology, MicroRNAs genetics, Nitric Oxide Synthase Type III genetics, Phosphatidylinositol 3-Kinases genetics, Proto-Oncogene Proteins c-akt genetics
- Abstract
This study aimed to investigate the role of miR-138 in human coronary artery endothelial cell (HCAEC) injury and inflammatory response and the involvement of the PI3K/Akt/eNOS signalling pathway. Oxidized low-density lipoprotein (OX-LDL)-induced HCAEC injury models were established and assigned to blank, miR-138 mimic, miR-138 inhibitor, LY294002 (an inhibitor of the PI3K/Akt/eNOS pathway), miR-138 inhibitor + LY294002 and negative control (NC) groups. qRT-PCR and Western blotting were performed to detect the miR-138, PI3K, Akt and eNOS levels and the protein expressions of PI3K, Akt, eNOS, p-Akt, p-eNOS, Bcl-2, Bax and caspase-3. ELISAs were employed to measure the expressions of TNF-α, IL-4, IL-6, IL-8, IL-10 and nitric oxide (NO) and the activities of lactate dehydrogenase (LDH) and eNOS. MTT and flow cytometry were performed to assess the proliferation and apoptosis of HCAECs. Compared to the blank group, PI3K, Akt and eNOS were down-regulated in the miR-138 mimic and LY294002 groups but were up-regulated in the miR-138 inhibitor group. The miR-138 mimic and LY294002 groups showed decreased concentrations of TNF-α, IL-6, IL-8 and NO and reduced activities of LDH and eNOS, while opposite trends were observed in the miR-138 inhibitor group. The concentrations of IL-4 and IL-10 increased in the miR-138 mimic and LY294002 groups but decreased in the miR-138 inhibitor group. The miR-138 mimic and LY294002 groups had significantly decreased cell proliferation and increased cell apoptosis compared to the blank group. These findings indicate that up-regulation of miR-138 alleviates HCAEC injury and inflammatory response by inhibiting the PI3K/Akt/eNOS signalling pathway., (© 2017 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.)
- Published
- 2017
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45. Cardioprotective effect of novel sulphonamides-1,3,5-triazine conjugates against ischaemic-reperfusion injury via selective inhibition of MMP-9.
- Author
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Zheng XZ, Zhou JL, Ye J, Guo PP, and Lin CS
- Subjects
- Animals, Antioxidants metabolism, Cardiotonic Agents metabolism, Cardiotonic Agents pharmacology, Cardiotonic Agents therapeutic use, Heart drug effects, Inhibitory Concentration 50, Isoproterenol toxicity, Male, Matrix Metalloproteinase 2 chemistry, Matrix Metalloproteinase 2 metabolism, Matrix Metalloproteinase 9 chemistry, Matrix Metalloproteinase Inhibitors metabolism, Matrix Metalloproteinase Inhibitors pharmacology, Matrix Metalloproteinase Inhibitors therapeutic use, Myocardium metabolism, Myocardium pathology, Protein Binding, Rats, Rats, Wistar, Reperfusion Injury chemically induced, Reperfusion Injury drug therapy, Structure-Activity Relationship, Sulfonamides chemistry, Triazines metabolism, Triazines pharmacology, Triazines therapeutic use, Cardiotonic Agents chemistry, Matrix Metalloproteinase 9 metabolism, Matrix Metalloproteinase Inhibitors chemistry, Triazines chemistry
- Abstract
Diseases affecting cardiovascular system are ranked as a top most cause of morbidity and mortality. Herein, a novel class sulphonamides-1,3,5-triazine conjugates have been synthesized and tested for inhibitory activity against MMP-2 and MMP-9. The results of the study showed that these molecules efficiently inhibit MMP-9 than MMP-2, revealing compound 8e as the most potent inhibitor (IC
50 = 2.34 ± 0.56 nm). Due to involvement of MMP-9 in many cardiovascular diseases, particularly in myocardial ischaemia (MI), compound 8e was further subjected for the determination of the protective effect on isoproterenol (ISO)-induced myocardial injury in rats., (© 2016 John Wiley & Sons A/S.)- Published
- 2016
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46. The role of obestatin in roux-en-Y gastric bypass-induced remission of type 2 diabetes mellitus.
- Author
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Wang JL, Xu XH, Zhang XJ, and Li WH
- Subjects
- Humans, Remission Induction, Diabetes Mellitus, Type 2 metabolism, Diabetes Mellitus, Type 2 surgery, Gastric Bypass, Ghrelin metabolism
- Abstract
Type 2 diabetes mellitus (T2DM) is a complex and multifactorial disease that is generally characterized by insulin resistance and loss of β-cell function that develops in adulthood. To date, more than 6% of the world's population is affected by T2DM. The main treatments of T2DM are dietary and lifestyle changes. However, only dependent on behaviour modification and oral hypoglycemics, many patients are unable to maintain glycemic control. Emerging evidence indicates that up to 80% of patients with T2DM undergoing Roux-en-Y gastric bypass (RYGB) experience complete remission of their T2DM and the majority of remissions occur almost immediately following the operation. Obestatin is a 23-amino-acid peptide, which is not only thought to suppress food intake and decrease gastric emptying but also found to exert survival effects in pancreatic β cells, increase glucose-stimulated insulin secretion, and reduce insulin resistance and inflammation. In addition, some researchers demonstrated that obestatin is a nutritional marker reflecting body adiposity and insulin resistance. Although results from previous studies were conflicting, the peripheral blood concentrations of obestatin were changed after RYGB. Therefore, regulation of obestatin level may be another mechanism for RYGB-induced remission of T2DM. In this article, we review briefly the effect of RYGB on T2DM in humans and offer an overview of the published data on the effects of RYGB on obestatin level in patients with T2DM. Furthermore, the possible roles of obestatin in the remission of T2DM following RYGB are also reviewed. Copyright © 2015 John Wiley & Sons, Ltd., (Copyright © 2015 John Wiley & Sons, Ltd.)
- Published
- 2016
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47. The E3 Ubiquitin Ligase c-Cbl Inhibits Microglia-Mediated CNS Inflammation by Regulating PI3K/Akt/NF-κB Pathway.
- Author
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Dong L, Li YZ, An HT, Wang YL, Chen SH, Qian YJ, Wang K, Zhen JL, Fan Z, Gong XL, Zheng Y, and Wang XM
- Subjects
- Animals, Brain metabolism, Brain pathology, Cell Line, Transformed, Cytokines genetics, Cytokines metabolism, Disease Models, Animal, Encephalitis etiology, Encephalitis pathology, Enzyme Inhibitors pharmacology, Gene Expression Regulation drug effects, Gene Expression Regulation genetics, Lipopolysaccharides pharmacology, Mice, Mice, Knockout, Microglia drug effects, NF-kappa B metabolism, Nitrites metabolism, Phosphorylation drug effects, Phosphorylation genetics, Proto-Oncogene Proteins c-akt metabolism, Proto-Oncogene Proteins c-cbl genetics, RNA, Small Interfering genetics, RNA, Small Interfering metabolism, Signal Transduction drug effects, Encephalitis enzymology, Microglia physiology, Phosphatidylinositol 3-Kinases metabolism, Proto-Oncogene Proteins c-cbl deficiency, Signal Transduction physiology
- Abstract
Background: Microglia-mediated inflammation may play an important role in the pathophysiology progression of neurodegenerative diseases, such as Parkinson's disease (PD), but the molecular mechanisms are poorly understood., Aims: This study sought to determine whether E3 ubiquitin ligase c-Cbl plays a role in the brain inflammation and to explore the relevant molecular mechanism., Methods: After BV2 microglial cells and c-Cbl-deficient mice were treated with lipopolysaccharide (LPS), neuroinflammation and microglial activation were evaluated by immunohistochemistry, ELISA and Western blot. We further investigated the possible mechanism of c-Cbl in regulating microglial activation., Results: Here, we showed that the E3 ubiquitin ligase c-Cbl had high expression in brain tissues including substantia nigra pars compacta (SNc), striatum and hippocampus, and it was abundantly expressed in microglia. Systemic LPS administration resulted in more severe microglial activation in CNS and increased expression of brain proinflammatory factors (TNF-α, IL-6, IL-1β and MCP-1) in c-Cbl knockout mice than wild type mice (WT). Downregulation of c-Cbl expression with c-Cbl siRNA in BV-2 microglial cells demonstrated a more robust increase in the proinflammatory factors release and NF-κB p65 nuclear translocation than that in control siRNA. Interestingly, Akt phosphorylation induced by LPS was also significantly augmented after c-Cbl knockdown. Moreover, blockade of PI3K/Akt activation by LY294002 significantly reduced inflammation response and NF-κB p65 nuclear translocation., Conclusion: In sum, c-Cbl inhibits expression of LPS-stimulated proinflammatory cytokines and chemokines in microglia. We demonstrate an unprecedented role for c-Cbl in microglia-mediated neuroinflammation involving PI3K/Akt/NF-κB pathway., (© 2016 John Wiley & Sons Ltd.)
- Published
- 2016
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48. ZNF804A variants confer risk for heroin addiction and affect decision making and gray matter volume in heroin abusers.
- Author
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Sun Y, Zhao LY, Wang GB, Yue WH, He Y, Shu N, Lin QX, Wang F, Li JL, Chen N, Wang HM, Kosten TR, Feng JJ, Wang J, Tang YD, Liu SX, Deng GF, Diao GH, Tan YL, Han HB, Lin L, and Shi J
- Subjects
- Adult, Alleles, Brain diagnostic imaging, Brain pathology, Case-Control Studies, Cerebral Cortex diagnostic imaging, Cerebral Cortex pathology, Female, Genetic Predisposition to Disease, Gray Matter diagnostic imaging, Haplotypes, Heroin Dependence psychology, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Organ Size, Parietal Lobe diagnostic imaging, Parietal Lobe pathology, Polymorphism, Single Nucleotide, Temporal Lobe diagnostic imaging, Temporal Lobe pathology, Cognition, Decision Making, Gray Matter pathology, Heroin Dependence genetics, Kruppel-Like Transcription Factors genetics
- Abstract
Drug addiction shares common neurobiological pathways and risk genes with other psychiatric diseases, including psychosis. One of the commonly identified risk genes associated with broad psychosis has been ZNF804A. We sought to test whether psychosis risk variants in ZNF804A increase the risk of heroin addiction by modulating neurocognitive performance and gray matter volume (GMV) in heroin addiction. Using case-control genetic analysis, we compared the distribution of ZNF804A variants (genotype and haplotype) in 1035 heroin abusers and 2887 healthy subjects. We also compared neurocognitive performance (impulsivity, global cognitive ability and decision-making ability) in 224 subjects and GMV in 154 subjects based on the ZNF804A variants. We found significant differences in the distribution of ZNF804A intronic variants (rs1344706 and rs7597593) allele and haplotype frequencies between the heroin and control groups. Decision-making impairment was worse in heroin abusers who carried the ZNF804A risk allele and haplotype. Subjects who carried more risk alleles and haplotypes of ZNF804A had greater GMV in the bilateral insular cortex, right temporal cortex and superior parietal cortex. The interaction between heroin addiction and ZNF804A variants affected GMV in the left sensorimotor cortex. Our findings revealed several ZNF804A variants that were significantly associated with the risk of heroin addiction, and these variants affected decision making and GMV in heroin abusers compared with controls. The precise neural mechanisms that underlie these associations are unknown, which requires future investigations of the effects of ZNF804A on both dopamine neurotransmission and the relative increases in the volume of various brain areas., (© 2015 Society for the Study of Addiction.)
- Published
- 2016
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49. miR-342-5p Is a Notch Downstream Molecule and Regulates Multiple Angiogenic Pathways Including Notch, Vascular Endothelial Growth Factor and Transforming Growth Factor β Signaling.
- Author
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Yan XC, Cao J, Liang L, Wang L, Gao F, Yang ZY, Duan JL, Chang TF, Deng SM, Liu Y, Dou GR, Zhang J, Zheng QJ, Zhang P, and Han H
- Subjects
- 3' Untranslated Regions, Animals, Binding Sites, Cell Adhesion Molecules genetics, Cell Adhesion Molecules metabolism, Cell Movement drug effects, Cell Proliferation drug effects, Choroidal Neovascularization genetics, Choroidal Neovascularization pathology, Choroidal Neovascularization prevention & control, Disease Models, Animal, Endoglin genetics, Endoglin metabolism, Epithelial-Mesenchymal Transition drug effects, HeLa Cells, Human Umbilical Vein Endothelial Cells metabolism, Humans, Mice, Inbred BALB C, Mice, Transgenic, MicroRNAs genetics, Phosphorylation, Proto-Oncogene Proteins c-akt, Receptor, Notch1 genetics, Signal Transduction drug effects, Time Factors, Transfection, Transforming Growth Factor beta metabolism, Vascular Endothelial Growth Factor A metabolism, Choroidal Neovascularization metabolism, Human Umbilical Vein Endothelial Cells drug effects, MicroRNAs metabolism, Neovascularization, Physiologic drug effects, Receptor, Notch1 metabolism, Transforming Growth Factor beta pharmacology, Vascular Endothelial Growth Factor A pharmacology
- Abstract
Background: Endothelial cells (ECs) form blood vessels through angiogenesis that is regulated by coordination of vascular endothelial growth factor (VEGF), Notch, transforming growth factor β, and other signals, but the detailed molecular mechanisms remain unclear., Methods and Results: Small RNA sequencing initially identified miR-342-5p as a novel downstream molecule of Notch signaling in ECs. Reporter assay, quantitative reverse transcription polymerase chain reaction and Western blot analysis indicated that miR-342-5p targeted endoglin and modulated transforming growth factor β signaling by repressing SMAD1/5 phosphorylation in ECs. Transfection of miR-342-5p inhibited EC proliferation and lumen formation and reduced angiogenesis in vitro and in vivo, as assayed by using a fibrin beads-based sprouting assay, mouse aortic ring culture, and intravitreal injection of miR-342-5p agomir in P3 pups. Moreover, miR-342-5p promoted the migration of ECs, accompanied by reduced endothelial markers and increased mesenchymal markers, indicative of increased endothelial-mesenchymal transition. Transfection of endoglin at least partially reversed endothelial-mesenchymal transition induced by miR-342-5p. The expression of miR-342-5p was upregulated by transforming growth factor β, and inhibition of miR-342-5p attenuated the inhibitory effects of transforming growth factor β on lumen formation and sprouting by ECs. In addition, VEGF repressed miR-342-5p expression, and transfection of miR-342-5p repressed VEGFR2 and VEGFR3 expression and VEGF-triggered Akt phosphorylation in ECs. miR-342-5p repressed angiogenesis in a laser-induced choroidal neovascularization model in mice, highlighting its clinical potential., Conclusions: miR-342-5p acts as a multifunctional angiogenic repressor mediating the effects and interaction among angiogenic pathways., (© 2016 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.)
- Published
- 2016
- Full Text
- View/download PDF
50. The Zinc Ion Chelating Agent TPEN Attenuates Neuronal Death/apoptosis Caused by Hypoxia/ischemia Via Mediating the Pathophysiological Cascade Including Excitotoxicity, Oxidative Stress, and Inflammation.
- Author
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Wang WM, Liu Z, Liu AJ, Wang YX, Wang HG, An D, Heng B, Xie LH, Duan JL, and Liu YQ
- Subjects
- Animals, Apoptosis physiology, Brain drug effects, Brain pathology, Brain physiopathology, Brain Ischemia drug therapy, Brain Ischemia pathology, Brain Ischemia physiopathology, Cell Hypoxia physiology, Chelating Agents pharmacology, Disease Models, Animal, Female, Glucose deficiency, Infarction, Middle Cerebral Artery, Ischemia pathology, Ischemia physiopathology, Neuroimmunomodulation drug effects, Neuroimmunomodulation physiology, Neurons pathology, Neurons physiology, Oxidative Stress drug effects, Oxidative Stress physiology, PC12 Cells, Rats, Rats, Inbred SHR, Receptors, AMPA metabolism, Receptors, N-Methyl-D-Aspartate metabolism, Zinc metabolism, Apoptosis drug effects, Cell Hypoxia drug effects, Ethylenediamines pharmacology, Ischemia drug therapy, Neurons drug effects, Neuroprotective Agents pharmacology
- Abstract
Aims: We aim to determine the significant effect of TPEN, a Zn(2+) chelator, in mediating the pathophysiological cascade in neuron death/apoptosis induced by hypoxia/ischemia., Methods: We conducted both in vivo and in vitro experiments in this study. PC12 cells were used to establish hypoxia/ischemia model by applying oxygen-glucose deprivation (OGD). SHR-SP rats were used to establish an acute ischemic model by electrocoagulating middle cerebral artery occlusion. The effect of TPEN on neuron death/apoptosis was evaluated. In addition, the relative biomarks of excitotoxicity, oxidative stress, and inflammation reactions in hypoxia/ischemia PC12 cell model as well as in SHR-SP rat hypoxia/ischemia model were also assessed., Results: TPEN significantly attenuates the neurological deficit, reduced the cerebral infarction area and the ratio of apoptotic neurons, and increased the expression of GluR2 in the rat hypoxia/ischemia brain. TPEN also increased blood SOD activity, decreased blood NOS activity and blood MDA and IL-6 contents in rats under hypoxia/ischemia. In addition, TPEN significantly inhibited the death and apoptosis of cells and attenuated the alteration of GluR2 and NR2 expression caused by OGD or OGD plus high Zn(2+) treatments., Conclusions: Zn(2+) is involved in neural cell apoptosis and/or death caused by hypoxia/ischemia via mediating excitotoxicity, oxidative stress, and inflammation., (© 2015 John Wiley & Sons Ltd.)
- Published
- 2015
- Full Text
- View/download PDF
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