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Yu XQ, Cai C, Du X, Shen W. [Effect of hypoxia-inducible factor-2α/stearoyl-CoA desaturase-1 pathway on biological behaviors of hepatoma cells induced by hypoxia]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:506-512. [PMID: 27784428 DOI: 10.3760/cma.j.issn.1007-3418.2016.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate whether hypoxia-inducible factor-2α (HIF-2α) affects the biological behaviors of hepatoma cells through regulating stearoyl-CoA desaturase-1 (SCD1) in a hypoxic environment. Methods: HepG2 and SMMC-7721 cells were exposed to 1% O2 to establish the hypoxic models. After hepatoma cells were stimulated by hypoxia for 0, 3, 6, 12, and 24 hours, fluorescent quantitative PCR and Western blot were used to measure the mRNA and protein expression of HIF-2α and SCD1 over time. HIF-2α interfering plasmids and SCD1 inhibitor CAY10566 were used to divide the cells into blank group (nomoxia), hypoxic group (1% O2 for 12 h), hypoxic negative control group (negative HIF-2α plasmid+1% O2 for 12 h), hypoxic interference group (HIF-2α interfering plasmid+1% O2 for 12 h), hypoxic CAY group (CAY10566 10 μmol+1% O2 for 12 h), and hypoxic interference+CAY group (HIF-2α interfering plasmid+CAY10566 10 μmol+1% O2 for 12 h). Western blot was used to measure the protein expression of HIF-2α and SCD1 in hepatoma cells, CCK8 assay was used to measure the proliferative capacity of hepatoma cells, Annexin-V/PE flow cytometry was used to measure the apoptosis of hepatoma cells, and transwell invasion assay was used to measure the invasion of hepatoma cells. A one-way analysis of variance was used to compare the means of multiple samples. Results: Both HepG2 and SMMC-7721 cells showed increasing mRNA and protein expression of HIF-2α and SCD1 over the time of hypoxic induction. After the expression of HIF-2α was downregulated in a hypoxic environment, hepatoma cells showed a significant reduction in the protein expression of SCD1; inhibition of SCD1 expression had no significant effect on the protein expression of HIF-2α in hepatoma cells. After HIF-2α was interfered with and SCD1 expression was inhibited, HepG2 and SMMC-7721 cells showed significantly greater reduction in the protein expression of SCD1 than those with HIF-2α or SCD1 inhibition alone (0.53±0.04 vs 1.12±0.04 or 1.12±0.04; 0.44±0.10 vs 0.90±0.10 or 0.99±0.13) (HIF-2α: FhepG2 = 1026.89, PhepG2 = 0.00, FSMMC-7721 = 2186.22, PSMMC-7721 = 0.00; SCD1: FhepG2 = 1347.93, PhepG2 = 0.00, FSMMC-7721 = 46.43, PSMMC-7721 = 0.00). Inhibition of the expression of HIF-2α or SCD1 reduced the proliferation and invasion of HepG2 and SMMC-7721 cells and promoted apoptosis (P < 0.05); interference and downregulation of HIF-2α combined with inhibition of SCD1 expression by CAY10566 achieved significantly greater reductions in proliferation and invasion and a significantly greater increase in apoptosis rate of hepatoma cells, compared with inhibition of HIF-2α or SCD1 alone (P <0.05). Conclusion: HIF-2α/SCD1 pathway may be one of the important mechanisms for hypoxia to regulate the energy metabolism of hepatoma cells and affect their biological behaviors.
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Affiliation(s)
- X Q Yu
- Department of Gastroenterology, the Second Affiliated Hospital of Chongqing Medical University, Choqnging 400010, China
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202
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Li M, Li Z, Wang J, Ni C, Sun Z, Wilson NJ, Zhang J, Chen F, Li X, Du X, Yu H, Zhang L, Smith FJD, Zhang G, Yao Z. Mutations in the mevalonate pathway genes in Chinese patients with porokeratosis. J Eur Acad Dermatol Venereol 2016; 30:1512-7. [PMID: 27422687 DOI: 10.1111/jdv.13653] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 02/11/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Porokeratosis (PK, MIM 175800) is a chronic autosomal dominant cutaneous keratinization disorder, which has a wide variety of clinical manifestations. OBJECTIVES We analysed the molecular basis of 10 families and 12 sporadic cases with different subtypes of porokeratosis in the Chinese population. METHODS Genomic DNA was extracted from peripheral blood samples. Mutation screening was performed by direct sequencing of exons and flanking intron-exon boundaries for the entire coding region of four mevalonate pathway genes and SLC17A9 gene. RESULTS We detected three novel mutations and seven previously described mutations by direct sequence analysis of the PCR products. Mutations p.Phe249Ser and p.Asn292Ser in mevalonate decarboxylase (MVD) were the most common mutations in this PK cohort; their presence was 27.3% and 13.6% respectively. CONCLUSIONS This study extended the mutation spectrum of PK in the Chinese Han population and provided further evidence for the genetic basis of PK. We first identified MVD simultaneously responsible for porokeratosis palmaris et plantaris disseminate development and confirmed the genotype-phenotype correlations.
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Affiliation(s)
- M Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Centre for Dermatology and Genetic Medicine, College of Life Sciences and Medicine, Dentistry and Nursing, University of Dundee, Dundee, UK
| | - Z Li
- Department of Dermatology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - J Wang
- Department of Dermatology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - C Ni
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Z Sun
- Department of Dermatology, Fengxian Institute of Dermatosis Prevention, Shanghai, China
| | - N J Wilson
- Centre for Dermatology and Genetic Medicine, College of Life Sciences and Medicine, Dentistry and Nursing, University of Dundee, Dundee, UK
| | - J Zhang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - F Chen
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - X Li
- Department of Dermatology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - X Du
- Department of Dermatology, Nanjing Medical University, Affiliated Wuxi People's Hospital, Wuxi, China
| | - H Yu
- Department of Dermatology, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - L Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
| | - F J D Smith
- Centre for Dermatology and Genetic Medicine, College of Life Sciences and Medicine, Dentistry and Nursing, University of Dundee, Dundee, UK
| | - G Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, China
| | - Z Yao
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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203
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Jing R, Guo XY, Xia SJ, Chang SS, Li JY, Lu SX, Du X, Dong JZ, Ma CS. [Situation of long-term use of oral anticoagulation among atrial fibrillation patients with stroke in different level hospital]. Zhonghua Yi Xue Za Zhi 2016; 96:2049-53. [PMID: 27468615 DOI: 10.3760/cma.j.issn.0376-2491.2016.26.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the current situation, time trends and factors associated with long-term use of oral anticoagulation (OAC) among atrial fibrillation (AF) patients with ischemic stroke. METHODS We used the dataset from the CAFR (Chinese Atrial Fibrillation Registry), a prospective, multicenter, hospital-based registry study involving 20 tertiary and 12 nontertiary hospitals in Beijing. In brief, 380 consecutive AF patients with following ischemic stroke were enrolled from 2003 to 2014.Patients with valvular AF, radiofrequency catheter ablation history or contraindications of OAC were excluded. We divided the patients into two groups according to hospital level, and investigated the rate of OAC use and its change over time in patients who had indication, the factors including patient characteristics and hospital level associated with OAC use were also analyzed. RESULTS Overall oral anticoagulation use rate was 27.71%, which dropped to 22.11% and 15.26% at 6 months and 12 months, respectively.A total of 298 participates were enrolled from tertiary hospitals (78.42%), and 82 were enrolled from nontertiary hospitals. The status of OAC use in tertiary hospitals was better than nontertiary hospitals (32.66% vs 7.32%, P<0.001). Multivariable analysis showed better oral anticoagulation use was independently associated with higher-level hospitals (odds ratio 1.785, 95% confidence interval 1.026-3.106, P=0.040), and history of heart failure (odds ratio 2.247, 95% confidence interval 1.235-4.090, P=0.008). CONCLUSIONS These data indicates oral anticoagulation use has improved in atrial fibrillation patients with stroke in Beijing. The use of anticoagulation among the patients from tertiary hospitals is significantly better than those from nontertiary hospitals, and the history of heart failure may have effect on the use of oral anticoagulation.
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Affiliation(s)
- R Jing
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing 100029, China
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204
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Barnes S, Benton HP, Casazza K, Cooper SJ, Cui X, Du X, Engler JA, Kabarowski JH, Li S, Pathmasiri W, Prasain JK, Renfrow MB, Tiwari HK. Training in metabolomics research. I. Designing the experiment, collecting and extracting samples and generating metabolomics data. J Mass Spectrom 2016; 51:ii-iii. [PMID: 27434812 DOI: 10.1002/jms.3672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Metabolomics is perhaps the most challenging of the -omics fields, given the complexity of an organism's metabolome and the rapid rate at which it changes. When one sets out to study metabolism there are numerous dynamic variables that can influence metabolism that must be considered. Recognizing the experimental challenges confronting researchers who undertake metabolism studies, workshops like the one at University of Alabama at Birmingham have been established to offer instructional guidance. A summary of the UAB course training materials is being published as a two-part Special Feature Tutorial. In this month's Part I the authors discuss details of good experimental design and sample collection and handling. In an upcoming Part II, the authors discuss in detail the various aspects of data analysis.
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205
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Yoo TJ, Shea J, Ge X, Kwon SS, Yazawa Y, Sener O, Mora F, Mora R, Mora M, Barbieri M, Du X. Presence of Autoantibodies in the Sera of Meniere's Disease. Ann Otol Rhinol Laryngol 2016; 110:425-9. [PMID: 11372925 DOI: 10.1177/000348940111000506] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We examined the sera of patients with Meniere's disease for the presence of antibodies against 8 inner ear antigens by enzyme-linked immunosorbent assay (ELISA). One hundred eight patients with Meniere's disease and 28 control subjects were studied. The antibodies against chicken type II collagen, bovine type II collagen, the cyanogen bromide cleaved peptide 11 (CB11) of each, type IX and XI collagens, C-Raf, and tubulin were measured by ELISA. The sensitivity of each antigen was between 37% and 60% individually, and was 91% when all 8 inner ear antigens were combined. These results showed that 91% of Meniere's disease sera have antibody activities to 1 or more of these inner ear antigens. The results suggest that performing ELISA for these 8 inner ear antigens was useful as a diagnostic tool for Meniere's disease. Further study is required for elucidating the role of these antigens in the pathogenesis of Meniere's disease, which might eventually result in better therapy.
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Affiliation(s)
- T J Yoo
- Department of Medicine, University of Tennessee, Memphis 38163, USA
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206
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Zeng T, Chen L, Du X, Lai SJ, Huang SP, Liu YL, Lu LZ. Association analysis between feed efficiency studies and expression of hypothalamic neuropeptide genes in laying ducks. Anim Genet 2016; 47:606-9. [DOI: 10.1111/age.12457] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2016] [Indexed: 11/30/2022]
Affiliation(s)
- T. Zeng
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - L. Chen
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
| | - X. Du
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
| | - S. J. Lai
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
| | - S. P. Huang
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
| | - Y. L. Liu
- Zhejiang Animal Husbandry Technique Extension Station; Hangzhou 310020 China
| | - L. Z. Lu
- Institute of Animal Husbandry and Veterinary Medicine; Zhejiang Academy of Agricultural sciences; Hangzhou 310021 China
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207
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Kalinsky K, Zheng T, Hibshoosh H, Du X, Mundi P, Yang J, Refice S, Feldman SM, Taback B, Connolly E, Crew KD, Maurer MA, Hershman DL. Proteomic modulation in breast tumors after metformin exposure: results from a "window of opportunity" trial. Clin Transl Oncol 2016; 19:180-188. [PMID: 27305912 DOI: 10.1007/s12094-016-1521-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/19/2016] [Indexed: 12/29/2022]
Abstract
PURPOSE Reverse Phase Protein Array (RPPA) is a high-throughput antibody-based technique to assess cellular protein activity. The goal of this study was to assess protein marker changes by RPPA in tumor tissue from a pre-surgical metformin trial in women with operable breast cancer (BC). METHODS In an open-label trial, metformin 1500-mg PO daily was administered prior to resection in 35 non-diabetic patients with stage 0-III BC, body mass index ≥25 kg/m2. For RPPA, formalin-fixed paraffin-embedded (FFPE) samples were probed with 160 antibodies. Paired and two-sample t-tests were performed (p ≤ 0.05). Multiple comparisons were adjusted for by fixing the false discovery rate at 25 %. We evaluated whether pre- and post-metformin changes of select markers by RPPA were identified by immunohistochemistry (IHC) in these samples. We also assessed for these changes by western blot in metformin-treated BC cell lines. RESULTS After adjusting for multiple comparisons in the 32 tumors from metformin-treated patients vs. 34 untreated historical controls, 11 proteins were significantly different between cases vs. CONTROLS increases in Raptor, C-Raf, Cyclin B1, Cyclin D1, TRFC, and Syk; and reductions in pMAPKpT202,Y204, JNKpT183,pT185, BadpS112, PKC.alphapS657, and SrcpY416. Cyclin D1 change after metformin by IHC was not observed. In cell lines, reductions in JNKpT183 and BadpS112 were seen, with no change in Cyclin D1 or Raptor. CONCLUSIONS These results suggest that metformin modulates apoptosis/cell cycle, cell signaling, and invasion/motility. These findings should be assessed in larger metformin trials. If confirmed, associations between these changes and BC clinical outcome should be evaluated. CLINICALTRIALS. GOV IDENTIFIER NCT00930579.
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Affiliation(s)
- K Kalinsky
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA. .,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.
| | - T Zheng
- Department of Statistics, Columbia University, New York, USA
| | - H Hibshoosh
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - X Du
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA
| | - P Mundi
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - J Yang
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - S Refice
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - S M Feldman
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Surgery, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - B Taback
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Surgery, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - E Connolly
- Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Radiation Oncology, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA
| | - K D Crew
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Epidemiology and Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
| | - M A Maurer
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA
| | - D L Hershman
- Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Avenue, 10th Floor, Room 1069, New York, USA.,Department of Epidemiology and Biostatistics, Mailman School of Public Health, Columbia University, New York, USA
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208
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Yang F, Du X, Wang Y, Wang C, Huang C, Xiao Q, Bai X, Wang H. Characterization and functional analysis of porcine estrogen-related receptors and their alternative splicing variants. J Anim Sci 2016; 93:4258-66. [PMID: 26440325 DOI: 10.2527/jas.2015-9188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Estrogen-related receptors (ESRR) are orphan nuclear hormone receptors with unidentified ligands; they play important roles in tissue regulation and development and maintenance of pluripotent cell identity. The splicer variant, genomic organization, and physiological roles of ESRR have been elucidated in the human and the mouse. However, in livestock, they remain elusive. In this study, we cloned porcine ESRR family members , , and . Two alternative splicing variants, and , and a novel were identified. To determine the domain function, we constructed vectors with sequential deletions of the ESRRB coding sequence. The functional analysis showed that the C domain of ESRR plays a core role in promoting the activation of estrogen response elements that are found in all kinds of ESRR-targeting genes, whereas the E domain is not essential for transcription regulation of ESRR unless a specific and identified ligand is applied.
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209
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Li F, Du X, Zhang H, Ju T, Chen C, Qu Q, Zhang X, Qi L, Lizée G. Next-generation sequencing of Chinese stage IV lung cancer patients reveals an association between EGFR mutation status and survival outcome. Clin Genet 2016; 91:488-493. [PMID: 27221040 DOI: 10.1111/cge.12809] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 12/28/2022]
Abstract
Large-scale genomic characterization of non-small cell lung cancer (NSCLC) has revealed several putative oncogenic driver mutations that may constitute druggable therapeutic targets. However, there are little data to suggest that such gene alterations have clinical relevance. Over 12 consecutive months, tumor biopsy samples from 80 patients with stage IV NSCLC were analyzed for mutations in selected exons of 508 cancer-related genes using next-generation sequencing. From 85 specimens referred for genomic characterization, 80 (94%) specimens were successfully genotyped, and all had identifiable somatic alterations. Epidermal growth factor receptor (EGFR) and TP53 genes contained the highest frequency of observed mutations (65% and 40%, respectively) in the stage IV NSCLC cases. Notably, patients with EGFR mutations showed a significantly shorter survival time compared with patients expressing wild-type EGFR (p = 0.0053). Moreover, of the 32 patients harboring EGFR mutations, EGFR-L858R mutant patients showed a significantly shorter survival time compared with patients with other EGFR mutations (p = 0.036). In conclusion, tumors from stage IV NSCLC patients harbor characteristic gene alterations, of which EGFR L858R in particular appears to be a poor prognostic factor for overall survival.
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Affiliation(s)
- F Li
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, China.,Department of Oncology Research, Tianjin HengJia Biotechnology Development Co, Ltd., Tianjin, China
| | - X Du
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - H Zhang
- Department of Integrated Chinese and Western Medicine Treatment Center, Henan Cancer Hospital, Zhengzhou, China
| | - T Ju
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - C Chen
- Department of Oncology, Tianjin Beichen Hospital, Tianjin, China
| | - Q Qu
- Department of Gynecology, Tianjin First Center Hospital, Tianjin, China
| | - X Zhang
- Department of Lymphoma & Myeloma, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - L Qi
- Laboratory of Molecular Neuro-Oncology, Texas Children's Cancer Center, Houston, TX, USA
| | - G Lizée
- Department of Melanoma Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA.,Department of Immunology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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210
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Zheng P, Zeng B, Zhou C, Liu M, Fang Z, Xu X, Zeng L, Chen J, Fan S, Du X, Zhang X, Yang D, Yang Y, Meng H, Li W, Melgiri ND, Licinio J, Wei H, Xie P. Gut microbiome remodeling induces depressive-like behaviors through a pathway mediated by the host's metabolism. Mol Psychiatry 2016; 21:786-96. [PMID: 27067014 DOI: 10.1038/mp.2016.44] [Citation(s) in RCA: 1170] [Impact Index Per Article: 146.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 02/15/2016] [Accepted: 02/17/2016] [Indexed: 12/11/2022]
Abstract
Major depressive disorder (MDD) is the result of complex gene-environment interactions. According to the World Health Organization, MDD is the leading cause of disability worldwide, and it is a major contributor to the overall global burden of disease. However, the definitive environmental mechanisms underlying the pathophysiology of MDD remain elusive. The gut microbiome is an increasingly recognized environmental factor that can shape the brain through the microbiota-gut-brain axis. We show here that the absence of gut microbiota in germ-free (GF) mice resulted in decreased immobility time in the forced swimming test relative to conventionally raised healthy control mice. Moreover, from clinical sampling, the gut microbiotic compositions of MDD patients and healthy controls were significantly different with MDD patients characterized by significant changes in the relative abundance of Firmicutes, Actinobacteria and Bacteroidetes. Fecal microbiota transplantation of GF mice with 'depression microbiota' derived from MDD patients resulted in depression-like behaviors compared with colonization with 'healthy microbiota' derived from healthy control individuals. Mice harboring 'depression microbiota' primarily exhibited disturbances of microbial genes and host metabolites involved in carbohydrate and amino acid metabolism. This study demonstrates that dysbiosis of the gut microbiome may have a causal role in the development of depressive-like behaviors, in a pathway that is mediated through the host's metabolism.
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Affiliation(s)
- P Zheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - B Zeng
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - C Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - M Liu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - Z Fang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Xu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - L Zeng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - J Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - S Fan
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Du
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - X Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - D Yang
- Department of Neurology, Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Y Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - H Meng
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - W Li
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - N D Melgiri
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
| | - J Licinio
- Mind & Brain Theme, South Australian Health and Medical Research Institute and Department of Psychiatry, School of Medicine, Flinders University, Adelaide, SA, Australia
| | - H Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - P Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Neurobiology, Chongqing, China.,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, China
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Yang R, Hu ZL, Kong QT, Li WW, Zhang LL, Du X, Huang SY, Xia XY, Sang H. A known mutation in GJB6 in a large Chinese family with hidrotic ectodermal dysplasia. J Eur Acad Dermatol Venereol 2016; 30:1362-5. [PMID: 27137747 DOI: 10.1111/jdv.13600] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 12/16/2015] [Indexed: 12/18/2022]
Affiliation(s)
- R. Yang
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - ZL. Hu
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - QT. Kong
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - WW. Li
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - LL. Zhang
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - X. Du
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - SY. Huang
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - XY. Xia
- Department of Reproduction and Genetics; Institute of Laboratory Medicine; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
| | - H. Sang
- Department of Dermatology; Jinling Hospital; School of Medicine; Nanjing University; Nanjing China
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212
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Li H, Wei D, Browning M, Du X, Zhang Q, Qiu J. Attentional bias modification (ABM) training induces spontaneous brain activity changes in young women with subthreshold depression: a randomized controlled trial. Psychol Med 2016; 46:909-920. [PMID: 26554304 DOI: 10.1017/s003329171500238x] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Attention bias modification (ABM) training has been suggested to effectively reduce depressive symptoms, and may be useful in the prevention of the illness in individuals with subthreshold symptoms, yet little is known about the spontaneous brain activity changes associated with ABM training. METHOD Resting-state functional MRI was used to explore the effects of ABM training on subthreshold depression (SubD) and corresponding spontaneous brain activity changes. Participants were 41 young women with SubD and 26 matched non-depressed controls. Participants with SubD were randomized to receive either ABM or placebo training during 28 sessions across 4 weeks. Non-depressed controls were assessed before training only. Attentional bias, depressive severity, and spontaneous brain activity before and after training were assessed in both training groups. RESULTS Findings revealed that compared to active control training, ABM training significantly decreased depression symptoms, and increased attention for positive stimuli. Resting-state data found that ABM training significantly reduced amplitude of low-frequency fluctuations (ALFF) of the right anterior insula (AI) and right middle frontal gyrus which showed greater ALFF than non-depressed controls before training; Functional connectivity strength between right AI and the right frontoinsular and right supramarginal gyrus were significantly decreased after training within the ABM group; moreover, the improvement of depression symptoms following ABM significantly correlated with the connectivity strength reductions between right AI and right frontoinsular and right supramarginal gyrus. CONCLUSION These results suggest that ABM has the potential to reshape the abnormal patterns of spontaneous brain activity in relevant neural circuits associated with depression.
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Affiliation(s)
- H Li
- Department of Psychology,Shanghai Normal University,Shanghai,China
| | - D Wei
- Key Laboratory of Cognition and Personality (SWU),Ministry of Education,Chongqing,China
| | - M Browning
- Department of Psychiatry,University of Oxford,Oxford,UK
| | - X Du
- Key Laboratory of Cognition and Personality (SWU),Ministry of Education,Chongqing,China
| | - Q Zhang
- Key Laboratory of Cognition and Personality (SWU),Ministry of Education,Chongqing,China
| | - J Qiu
- Key Laboratory of Cognition and Personality (SWU),Ministry of Education,Chongqing,China
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213
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Shi JH, Ji CP, Xing AJ, Zhu CR, Du X, Lin LM, Wei XM, Wu SL. [Impact of combined systolic blood pressure and body mass index on the risk of new-onset atrial fibrillation]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:231-7. [PMID: 26988678 DOI: 10.3760/cma.j.issn.0253-3758.2016.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To observe the impact of combined systolic blood pressure and body mass index (BMI) on the risk of new-onset atrial fibrillation. METHODS The participants who participated the health examination between July 2006 and October 2007 at Kailuan medical group and had no history of atrial fibrillation were selected as the observation cohort.The second, the third and the fourth health examination were conducted between July 2008 and October 2009, July 2010 and October 2011, July 2012 and October 2013, respectively.The participants were stratified by 3 systolic blood pressure levels (≤120, 120-140, ≥140 mmHg (1 mmHg=0.133 kPa))×3 BMI levels (≤24, 24-28, ≥28 kg/m(2)) at baseline.The combined effect of systolic blood pressure and BMI on the risk of new-onset atrial fibrillation was analyzed by multiple Cox regression analysis. RESULTS A total of 99 206 participants were recruited and 88 715 participants were included in the final analysis after excluding participants who had new-onset valvular atrial fibrillation or lost to follow-up.A total of 265 participants developed atrial fibrillation during the 5.6 years follow-up.The incidence of atrial fibrillation increased with the BMI and systolic blood pressure, the incidence of new onset of atrial fibrillation was significantly higher in the group with systolic blood pressure≥140 mmHg and BMI≥28 kg/m(2) than the group with systolic blood pressure≤120 mmHg and BMI≤24 kg/m(2)(1.15/1 000 person-year vs. 0.25/1 000 person-year). Multiple Cox regression analysis showed that participants in the group with systolic blood pressure≥140 mmHg and BMI≥28 kg/m(2) carried 2.08 (95%CI 1.18-3.67) times higher risk for atrial fibrillation than the group with systolic blood pressure≤120 mmHg and BMI≤24 kg/m(2) after adjustment for age, gender and other confounders at baseline. CONCLUSION Participants with systolic blood pressure≥140 mmHg and BMI≥28 kg/m(2) are at high risk for new onset of atrial fibrillation.
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Affiliation(s)
- J H Shi
- Department of Cardiology, Kailuan General Hospital, North China University of Science and Technology, Tangshan 063000, China
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Guo L, Yang J, Mai J, Du X, Guo Y, Li P, Yue Y, Tang D, Lu C, Zhang WH. Prevalence and associated factors of myopia among primary and middle school-aged students: a school-based study in Guangzhou. Eye (Lond) 2016; 30:796-804. [PMID: 26965016 DOI: 10.1038/eye.2016.39] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/04/2016] [Indexed: 11/09/2022] Open
Abstract
PurposeTo estimate the prevalence of myopia among primary and middle school-aged students in Guangzhou and to explore the potentially contributing factors to myopia.MethodsThis cross-sectional study was based on a sample of students in grades 1-6 and grades 7-9. Data were collected from refractive error measurements and a structured questionnaire.ResultsA total of 3055 participants were involved in this analysis, and the overall prevalence of myopia was 47.4% (95% confidence interval (CI)= 45.6-49.2%). The prevalence of myopia in students increased along with the growth of grade level; the prevalence of myopia in students in grade 1 was only 0.2%, as it increased to 38.8% in students in grade 3, and the rate was the highest (68.4%) in students in grade 9. Girls were at a higher risk of myopia than boys (adjusted odds ratio=1.22, 95% CI=1.04-1.44). Both male and female students whose distance of reading was longer than 25 cm were less likely to have myopia and who have one or two myopic parents were at a higher risk of myopia. In addition, reading for pleasure more than 2 h per day (adjusted odds ratio=1.84, 95% CI=1.09-3.12) was only positively associated with myopia in boys and spending time watching television per week was only positively associated with myopia in girls.ConclusionMyopia in students is a significant public health problem in Guangzhou. Female gender, higher grade, longer time spent for near work, shorter distance of near work, and parental myopia were shown to be associated with the increasing risk of myopia in children.
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Affiliation(s)
- L Guo
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.,Epidemiology, Biostatistics and Clinical Research Centre, School of Public Health, Université Libre de Bruxelles (ULB), Brussel, Belgium
| | - J Yang
- Health Promotion Centre for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, People's Republic of China
| | - J Mai
- Health Promotion Centre for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, People's Republic of China
| | - X Du
- Health Promotion Centre for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, People's Republic of China
| | - Y Guo
- Health Promotion Centre for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, People's Republic of China
| | - P Li
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Y Yue
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - D Tang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - C Lu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - W-H Zhang
- Epidemiology, Biostatistics and Clinical Research Centre, School of Public Health, Université Libre de Bruxelles (ULB), Brussel, Belgium
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215
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Lu A, Fang Y, Du X, Li Y, Cai Z, Yu K, Zhao L, Wang B, Wu J, Cheng Y, Zuo Y, Jia Y, Tan F, Ding L, Lu J, Zhang L, Huang X. Efficacy, safety and pharmacokinetics of clofarabine in Chinese pediatric patients with refractory or relapsed acute lymphoblastic leukemia: a phase II, multi-center study. Blood Cancer J 2016; 6:e400. [PMID: 26918364 PMCID: PMC4771971 DOI: 10.1038/bcj.2016.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- A Lu
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Fang
- Department of Phase 1 Clinical Trial, Peking University People's Hospital, Beijing, China
| | - X Du
- Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Y Li
- The First Hospital of China Medical University, Shenyang, China
| | - Z Cai
- The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - K Yu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - L Zhao
- Department of Phase 1 Clinical Trial, Peking University People's Hospital, Beijing, China
| | - B Wang
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - J Wu
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Cheng
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Zuo
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Jia
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - F Tan
- Betta Pharmaceuticals Co., Ltd, Hangzhou, China
| | - L Ding
- Betta Pharmaceuticals Co., Ltd, Hangzhou, China
| | - J Lu
- Institute of Hematology, Peking University People's Hospital, Beijing, China
| | - L Zhang
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - X Huang
- Institute of Hematology, Peking University People's Hospital, Beijing, China
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Abstract
We aimed to investigate the role of XRCC1 codon 194 (Arg>Trp), 280 (Arg>His), and 399 (Arg>Gln) polymorphisms in response to chemotherapy and the overall survival of gastric cancer patients. A total of 172 patients were recruited for our study between January 2010 and March 2012. Genotyping of the three XRCC1 codons was carried out by restriction fragment length polymorphism polymerase chain reaction. By logistic regression analysis, we found that the Trp/Trp genotype of XRCC1 194 (Arg>Trp) showed a stronger association with complete or partial response to chemotherapy compared to the Arg/Arg genotype, and the adjusted odds ratio (95%CI) was 0.17 (0.05-0.58). Moreover, the Trp/Trp genotype was associated with a higher risk of death than that with the Arg/Arg genotype based on multivariate Cox proportional hazard regression analysis, and the adjusted hazard ratio (95%CI) was 4.08 (1.20-14.19). In conclusion, we found that the XRCC1 194 (Arg>Trp) polymorphism was correlated with a better response to chemotherapy and a low risk of death in patients with gastric cancer.
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Affiliation(s)
- H Q Hu
- Department of Digestive System, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - F Wang
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - X Du
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - X Z Zhao
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Z Jin
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - M X Hou
- Department of Gastrointestinal Surgery, the Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
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217
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Guo RY, Wu YF, Zhao W, Li SS, Li M, Du X, Li X, Xie GQ, Gao RL. [Impact of the time from symptoms onset to thrombolysis on in-hospital major adverse cardiovascular event rate in patients with acute ST-segment elevation myocardial infarction]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:128-132. [PMID: 26926505 DOI: 10.3760/cma.j.issn.0253-3758.2016.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the impact of thrombolytic therapy time delay on in-hospital major adverse cardiac event rate in patients with acute ST-segment elevation myocardial infarction (STEMI). METHODS This survey was performed in 101 level 2 hospitals from 15 provinces or autonomous region in China. Patients admitted to these hospitals with acute STEMI during November 2011 to November 2014 and received thrombolytic therapy were eligible for this study. Multivariate logistic regression modeling was used to estimate the rate of in-hospital major adverse cardiac events (re-infarction, stroke and all-cause mortality) in patients with different thrombolytic time delay. RESULTS A total of 3 719 STEMI patients received thrombolytic therapy, 88%(3 270 cases) of them were treated within 12 hours. After controlling for the impact of confounding factors, such as a variety of risk factors, past disease histories, the severity of STEMI, medication, interventions, etc, MACE rates significantly increased along with the thrombolysis time delay, no matter thrombolysis succeeded or not (trend test P<0.05). In group of successful thrombolysis, multivariate adjusted rate of MACE for 0-5.9 hours, 6.0-11.9 hours and ≥12.0 hours were 3.2%, 3.9% and 7.8%; in group of unsuccessful thrombolysis, it was 11.6%, 14.1% and 25.2% respectively (trend test P<0.05). The multivariate adjusted rates of re-infarction in group of successful thrombolysis as well as in group of unsuccessful thrombolysis significantly increased in proportion to thrombolysis time delay ≥ 12.0 h (trend test P<0.05). In group of successful thrombolysis, multivariate adjusted rate of re-infarction for 0-5.9 hours, 6.0-11.9 hours and ≥12.0 hours were 1.9%, 1.5% and 6.8%; in group of unsuccessful thrombolysis, it was 3.9%, 3.1% and 13.6%, respectively. Within the same time delay group, MACE and re-infarction rates were significantly lower in successful thrombolysis group than in unsuccessful thrombolysis group (all P<0.05). CONCLUSION Thrombolytic therapy should be conducted within 6 hours after the attack. Both re-infarction or MACE rates are significantly increased in patients with more than 12 hours thrombolysis time delay.
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Affiliation(s)
- R Y Guo
- School of Public Health, Peking University Health Science Centre, Beijing 100191, China
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218
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Abstract
Introduction Parathyroid carcinoma accounts for 0.5% to 5% of all cases of primary hyperparathyroidism and it is an exceedingly rare endocrine malignancy first described in 1933. Most experts recommend en bloc excision at initial surgery as the only chance for its cure. Both chemotherapy and radiotherapy have not been demonstrated to be beneficial in parathyroid carcinoma. Some patients have multiple recurrences or metastases. Therefore, new therapies are urgently needed. Inhibition of the interaction between Programmed Death Receptor 1 (PD-1) and Programmed Death Receptor Ligand 1 (PD-L1) enhances T-cell responses in vitro and mediates clinical antitumour activity. Aim We analysed the expression of PD-L1 in parathyroid cancer to evaluate its potential as target for immunotherapeutic strategy. Subjects and methods A cohort of 18 patients were diagnosed with primary or metastatic parathyroid cancer. Immunohistochemistry was performed in 18 formalin-fixed paraffin-embedded specimens using a rabbit monoclonal antibody. A 5% cut-off value was applied for PD-L1 positivity. Results The anti PD-L1 antibody showed a pre-dominantly membranous staining pattern in parathyroid cancer cells. Programmed Death Receptor Ligand-1 expression was found in 22.2% of all parathyroid carcinoma cases. There was no correlation between the expression of PD-L1 with lymph node metastasis, gender and age (P> 0.05). Conclusion This expression of PD-L1 in human parathyroid cancer suggests that patients with parathyroid cancer could profit from immunotherapeutic strategies using anti-PDL1 antibodies.
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Affiliation(s)
- X Du
- Capital Medical University, Affiliated Beijing Shijitan Hospital, Dept. of Pathology, Beijing, China
| | - L Wang
- Capital Medical University, Affiliated Beijing Shijitan Hospital, Dept. of Pathology, Beijing, China
| | - B Shen
- Capital Medical University, Affiliated Beijing Shijitan Hospital, Dept. of Pathology, Beijing, China
| | - H He
- Nanyang Central Hospital, Nanyang, Henan, China
| | - H Chang
- Capital Medical University, Affiliated Beijing Shijitan Hospital, Dept. of Pathology, Beijing, China
| | - B Wei
- Capital Medical University, Affiliated Beijing Shijitan Hospital, Dept. of Otorhinolaryngology, Beijing, China
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McMurray KMJ, Du X, Brownlee M, Palmer AA. Neuronal overexpression of Glo1 or amygdalar microinjection of methylglyoxal is sufficient to regulate anxiety-like behavior in mice. Behav Brain Res 2015; 301:119-23. [PMID: 26711908 DOI: 10.1016/j.bbr.2015.12.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 11/30/2015] [Accepted: 12/15/2015] [Indexed: 11/16/2022]
Abstract
GLO1 (Glyoxalase1) is a ubiquitous cellular enzyme that detoxifies methylglyoxal (MG), which is a byproduct of glycolysis. Previously, we showed that ubiquitous overexpression of Glo1 reduced concentrations of MG and increased anxiety-like behavior, whereas systemic injection of MG reduced anxiety-like behavior. We further showed that MG is a competitive partial agonist at GABA-A receptors. Based on those data we hypothesized that modulation of GABAergic signaling by MG underlies Glo1 and MG's effects on anxiety-like behavior. As previous studies used ubiquitous overexpression, we sought to determine whether neuronal Glo1 overexpression was sufficient to increase anxiety-like behavior. We generated ROSA26 knock-in mice with a floxed-stop codon upstream from human Glo1 (FLOXGlo1KI) and bred them with mice expressing CRE recombinase under the direction of the Synapsin 1 promoter (Syn-CRE) to limit overexpression of Glo1 specifically to neurons. Furthermore, since previous administration of MG had been systemic, we sought to determine if direct microinjection of MG into the basolateral amygdala (BLA) was sufficient to reduce anxiety-like behavior. Thus, we performed bilateral microinjections of saline, MG (12μM or 24μM), or the positive control midazolam (4mM) directly into the BLA. FLOXGlo1KIxSyn-CRE mice showed significantly increased anxiety-like behavior compared to their FLOXGLO1xWT littermates. In addition, bilateral microinjection of MG and midazolam significantly decreased anxiety-like behavior compared to saline treated mice. These studies suggest that anatomically specific manipulations of Glo1 and MG are sufficient to induce changes in anxiety-like behavior.
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Affiliation(s)
- K M J McMurray
- Committee on Neurobiology, University of Chicago, Chicago, IL 60637, USA; Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
| | - X Du
- Diabetes Research Center, Department of Medicine and Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - M Brownlee
- Diabetes Research Center, Department of Medicine and Department of Pathology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - A A Palmer
- Committee on Neurobiology, University of Chicago, Chicago, IL 60637, USA; Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA; Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL 60637, USA; Department of Psychiatry, University of California San Diego, La Jolla, CA 92093, USA.
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220
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Yang SY, Aisimutula D, Li HF, Hu Y, Du X, Li J, Luan MX. Mutational analysis of BRCA1/2 gene and pathologic characteristics from Kazakh population with sporadic breast cancer in northwestern China. Genet Mol Res 2015; 14:13151-61. [PMID: 26535628 DOI: 10.4238/2015.october.26.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Mutations in the BRCA1/2 genes are associated with an increased risk of breast cancer, but no large-scale research have examined the BRCA1/2 mutations in Chinese Kazakh women. We evaluated the frequency and distributions of BRCA1 and BRCA2 gene mutations in Kazakh sporadic breast cancer patients and healthy women in China. The association between the clinical-pathologic features of Kazakh breast cancer patients and BRCA1/2 mutations were also investigated. Two unclassified variants (T539M and T1915M) and 16 polymorphisms were detected in this study, 4 of which (G356A, His743, Asn991Asp, Val1269) were detected more frequently in breast cancer patients than in healthy controls. We observed a higher prevalence of BRCA1/2 common sequence alterations and a large number of Kazakh women carrying multiple co-existing BRCA1/2 mutations. The prevalence of BRCA1 mutations was similar to that of BRCA2 mutations. Although no significant differences were observed, BRCA1/2 carriers were generally younger at diagnosis of wild-type breast cancer patients. BRCA1-associated Kazakh sporadic breast cancers present with high tumor grade, early stage, negative lymph node status, absence of estrogen receptor expression and progesterone-positive status. Estrogen receptor expression was the only predominant histological type in BRCA2 carriers. In this study, we determined the BRCA1 and BRCA2 gene mutation status and determined the association with clinical-pathologic characteristics in a Chinese Kazakh population. Larger population-based screening studies screening the entire coding region of BRCA1/2 are required to evaluate the breast cancer risk induced by the sequence alterations detected in this study.
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Affiliation(s)
- S Y Yang
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - D Aisimutula
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - H F Li
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Y Hu
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - X Du
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - J Li
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - M X Luan
- Department of Breast Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
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Apopo S, Liu H, Jing L, Du X, Xie S, Gong Y, Xu R, Li S. Identification and profiling of microRNAs associated with white and black plumage pigmentation in the white and black feather bulbs of ducks by RNA sequencing. Anim Genet 2015; 46:627-35. [PMID: 26369256 DOI: 10.1111/age.12343] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2015] [Indexed: 11/29/2022]
Abstract
MicroRNAs (miRNAs) play important roles in many biological processes by regulating gene expression at the post-transcriptional level. However, the mechanism by which specific miRNAs may regulate plumage pigmentation has remained largely elusive. In this study, we sequenced miRNAs using Solexa sequencing and then performed a detailed analysis of their expression profiles between the black and white feather bulbs of ducks from Cui Hei, Kaiya, Liancheng pure breeds and a Kaiya-Liancheng F2 population. mirdeep2 software identified 121 conserved and eight novel miRNAs. Five differentially expressed miRNAs between the two tissues types were also identified by degseq software. Notably, miR-204 was predominantly expressed in black feather bulbs. To further validate the sequencing data, we applied stem-loop quantitative PCR of ten known miRNAs based on the identified sequences. Furthermore, in exploring the temporal expression pattern of miR-204, we performed profiling in nine duck tissues. The targets of these miRNAs were predicted using a PITA algorithm and were later grouped based on Gene Ontology and KEGG pathway analysis using the DAVID website. The melanogenesis pathway was among the identified signalling pathways, implying key roles of these miRNAs in plumage pigmentation. Expression analysis of the target genes in the melanogenesis pathways was also performed. This study provides the foundation for subsequent studies on the prospective practical role for such miRNAs in post-transcriptional gene regulation linked to plumage pigmentation.
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Affiliation(s)
- S Apopo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - H Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - L Jing
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - X Du
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China.,College of Informatics, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - S Xie
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - Y Gong
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
| | - R Xu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, Jilin, China
| | - S Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, China
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Yong X, Hu T, Feng S, Du X, Shi H, Feng W. Synergism in Pharmacokinetics of Retagliptin and Metformin Observed during Clinical Trials of their Combination Therapy. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i8.22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Shen J, Du X, Diao X, Zhao L, Wang W, Yu Y, Luo H. Myeloid Sarcoma Presenting With Multiple Skin and Subcutaneous Mass Without Leukemic Manifestations After Renal Transplantation. Transplant Proc 2015; 47:2227-32. [PMID: 26361685 DOI: 10.1016/j.transproceed.2015.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 06/02/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Myeloid sarcoma is well described and known in clinical practice, however, it is a rare condition after receiving renal transplantation. Immunosuppressive therapy is thought to be the main cause in these cases. CASE REPORT A 45-year-old woman accepted a right kidney transplantation because of her chronic renal insufficiency and uremia in May 2011. She had to receive a left kidney transplantation again in February 2012 because she had renal failure again after receiving the right kidney transplantation. She received immune inhibitors treatment. After the latter operation, her renal function was normal. The third operation was done to remove the right transplanted kidney in July 2012. The diagnosis of the kidney was myeloid sarcoma. The blood and bone marrow biopsy had no evidence of leukemia. She then received chemotherapy. There was a small skin nodule on the left arm of approximately 0.5 cm in August 2012; after that its diameter enlarged progressively to about 5 cm and more nodules and masses gradually appeared on her face, arms, trunk, lower limbs, and feet over the course of 1 year. The skin biopsy specimen obtained from her left arm showed myeloid sarcoma too. She was admitted to the Orthopedics Department for severe pain and swelling in the left foot in September 2014 and underwent an operation for resecting the mass in the left foot. Pain was apparently alleviated and the incision healed well. CONCLUSIONS The patient is still alive with no evidence of leukemia after a 30-month follow-up.
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Affiliation(s)
- J Shen
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - X Du
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
| | - X Diao
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - L Zhao
- Department of Medical Information Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - W Wang
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Y Yu
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - H Luo
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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225
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Deng Q, Ma D, Shi Z, Huang W, Du X, Gao W, Zhu X, Lei L, Zhang M, Sun G, Yuan X, Li X, Wang Z, Liu G, Li X. Effects of β-hydroxybutyricacid on the synthesis and assembly of very low-density lipoprotein in bovine hepatocytes in vitro. J Anim Physiol Anim Nutr (Berl) 2015; 100:331-6. [PMID: 26283277 DOI: 10.1111/jpn.12380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 06/26/2015] [Indexed: 11/30/2022]
Abstract
β-Hydroxybutyricacid (BHBA) is an important metabolite that involved in the development of ketosis and fatty liver in dairy cows. Dairy cows with fatty liver displayed high blood concentration of BHBA and very low-density lipoprotein (VLDL) assembly. The effects of BHBA on VLDL synthesis and assembly in hepatocytes of cows were unclear. In this study, bovine hepatocytes were cultured and treated with different concentrations of BHBA. We found that BHBA treatment upregulated the mRNA and protein levels of apolipoprotein B100 (ApoB 100), apolipoprotein E (ApoE) and microsomal triglyceride transfer protein (MTTP) and showed in a firstly increased and then decreased trend. Meanwhile, the mRNA and protein levels of LDLR showed in a reverse trend. Consequently, VLDL content was significantly increased in medium-dose BHBA treatment group, while decreased in high-dose group. These results indicate that the effects of BHBA on the VLDL synthesis showed in a dose-dependent manner that low levels of BHBA increase VLDL synthesis and high levels of BHBA decrease VLDL synthesis.
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Affiliation(s)
- Q Deng
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China.,College of Animal Science and Technology, Inner Mongolia National University, Tongliao, China
| | - D Ma
- College of Animal Science and Technology, Inner Mongolia National University, Tongliao, China
| | - Z Shi
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - W Huang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - X Du
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - W Gao
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - X Zhu
- UMR 788, Inserm and University Paris-Sud, Bicêtre, Kremlin-Bicêtre, France
| | - L Lei
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - M Zhang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - G Sun
- College of Animal Science and Technology, Inner Mongolia National University, Tongliao, China
| | - X Yuan
- College of Animal Science and Technology, Inner Mongolia National University, Tongliao, China
| | - X Li
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - Z Wang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
| | - G Liu
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China.,College of Animal Science and Technology, Inner Mongolia National University, Tongliao, China
| | - X Li
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University Changchun, Jilin, China
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226
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Yu Y, Chen JH, Li H, Yang Z, Du X, Hong L, Liao H, Jiang L, Shi J, Zhao L, Tan S, Luo H, Huizinga JD. Involvement of 5-HT3 and 5-HT4 receptors in colonic motor patterns in rats. Neurogastroenterol Motil 2015; 27:914-28. [PMID: 25807879 DOI: 10.1111/nmo.12550] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 02/21/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND Colonic migrating motor complexes in the rat constitute two distinct propulsive motor patterns, pan-colonic rhythmic long distance contractions (LDCs), and rhythmic propulsive motor complexes (RPMCs) occurring primarily in the mid/distal colon. Interstitial cells of Cajal govern their rhythmicity, but their occurrence is dependent on neural programs. Our aim was to investigate the involvement of 5-HT3 and 5-HT4 receptors in the generation and pharmacological control of the motor patterns. METHODS Effects of 5-HT-related drugs on colonic motor patterns were analyzed through spatio-temporal maps created from video recordings of whole organ motility. KEY RESULTS 5-HT3 antagonists abolished RPMCs and LDCs. 5-HT4 agonists inhibited LDCs; they promoted RPMCs, which was blocked by the 5-HT4 antagonist GR 125487. 5-HT and the 5-HT3 agonist m-CPBG strongly inhibited LDCs and RPMCs. CONCLUSIONS & INFERENCES The generation of LDCs involves ongoing 5-HT release acting on 5-HT3 and 5-HT4 receptors. The spontaneous generation of RPMCs involves ongoing 5-HT release acting on 5-HT3 but not 5-HT4 receptors. Prucalopride and mosapride promote RPMCs, an effect that is inhibited by the 5-HT4 receptor antagonist GR 125487. A 5-HT3 agonist does not promote RPMCs. Segmentation, including a pattern of sequential segmental activity not previously described, can occur without significant involvement of 5-HT3 and 5-HT4 receptors. 5-HT and a 5-HT3 agonist are strongly inhibitory indicating that 5-HT receptors are present in inhibitory pathways which are normally not involved in the generation of spontaneous or distention-induced motor patterns.
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Affiliation(s)
- Y Yu
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - J-H Chen
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - H Li
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - Z Yang
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - X Du
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - L Hong
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - H Liao
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - L Jiang
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - J Shi
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - L Zhao
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - S Tan
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - H Luo
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
| | - J D Huizinga
- Department of Gastroenterology and Hepatology, Renmin Hospital of Wuhan University, Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China
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227
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Orning J, Amin-Hanjani S, Hamade Y, Du X, Aletich V, Charbel F, Alaraj A. P-036 posterior fossa arteriovenous malformations: increased prevalence and risk of associated aneurysms. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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228
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Du X, Yang R, Wang XX, Cui GH. A new 2D cobalt(II) coordination polymer constructed from 1,2,4,5-benzenetetracarboxylate and flexible bis(benzimidazole) ligands. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476615040162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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229
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Dong JZ, Ning M, Yu RH, Long DY, Tang RB, Sang CH, Jiang CX, Bai R, Du X, Nie SP, Ma CS. A simple method to localize transseptal puncture site during catheter ablation for atrial fibrillation. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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230
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Zhu J, Jiang H, He RB, Yin HQ, Wang CL, Li Y, Du X. Association between etiologic factors in infertile couples and fertilization failure in conventional in vitro fertilization cycles. Andrology 2015; 3:717-22. [PMID: 26097073 DOI: 10.1111/andr.12048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 03/22/2015] [Accepted: 04/08/2015] [Indexed: 10/23/2022]
Abstract
The aim of this study was to investigate the relationship between the etiology of the couples and risk of fertilization failure (FF) in conventional in vitro fertilization (IVF) cycles and the effect of rescue intracytoplasmic sperm injection (ICSI) technique to offspring. A total of 2542 IVF cycles were divided into four groups according to infertile etiology: Group A - primary infertility with normal semen parameters; Group B - secondary infertility with oligoasthenozoospermia; Group C - primary infertility with oligoasthenozoospermia; and Group D - secondary infertility with normal semen parameters. The results showed that there were significant differences in incidence of FF among Group A (16.8%), Group B (20.9%), Group C (48.7%), and Group D (0.9%) (p < 0.001). Logistic regression models demonstrated that primary infertility (OR: 10.898, 95% CI: 4.651-25.583, p < 0.001) and oligoasthenozoospermia (OR: 12.215, 95% CI: 5.903-25.276, p < 0.001) were independent risk factors for FF. There were no significant differences in main outcomes between conventional ICSI and rescue ICSI. In conclusion, the patients with primary infertility and oligoasthenozoospermia might be at higher risk of FF. The rescue ICSI technique is safe and helpful for IVF cycles of FF.
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Affiliation(s)
- J Zhu
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - H Jiang
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - R-B He
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - H-Q Yin
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - C-L Wang
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - Y Li
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
| | - X Du
- Reproductive Medicine Center, the 105th Hospital of PLA, Hefei, China
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231
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Langhammer B, Sällström S, Stanghelle J, Sunnerhagen K, Lundgren-Nilsson Å, Zhang T, Bushnik T, Becker F, Keren O, Banura S, Elessi K, Panchenko M, Du X, Wanying D. A multicenter study on transfer, walking and stair climbing in persons with stroke admitted to specialized rehabilitation. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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232
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Abstract
We describe the properties of ultrasensitive graphene photon detectors for use in the far-infrared/terahertz spectral region and present theoretical predictions for their power detection sensitivity. These predictions are based on two graphene contacting schemes with superconducting contacts: contacts with a thin insulating barrier, and direct superconducting contacts. To quantitatively assess these predictions, we perform thermal measurements of graphene at low temperatures and analyse them to extract information on electron-phonon cooling in graphene. These new results for the electron-phonon cooling channel allow reliable prediction of the noise equivalent power (NEP) that can be expected from an optimized graphene detector, using measurement of the Johnson noise emission as the thermometry method. We find that an NEP of 2 × 10(-19) W Hz(-1/2) should be achievable under certain biasing conditions with an ideal device.
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Affiliation(s)
- C B McKitterick
- Department of Physics, Yale University, New Haven, CT 06520, USA. Department of Applied Physics, Yale University, New Haven, CT 06520, USA
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233
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Du X, Yang X, Wu Y, Liang J, Zhang J, Huang Z, Zhu Z, Lin W, Zou M, Wen J, Wu S, Guo R, Zhang X, Lahn B, He F, Xiang A. Distribution of the cytoskeletal protein, Nestin, in acute leukemia. Biotech Histochem 2015; 90:384-94. [DOI: 10.3109/10520295.2014.988751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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234
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Chiappelli J, Hong LE, Wijtenburg SA, Du X, Gaston F, Kochunov P, Rowland LM. Alterations in frontal white matter neurochemistry and microstructure in schizophrenia: implications for neuroinflammation. Transl Psychiatry 2015; 5:e548. [PMID: 25871973 PMCID: PMC4462606 DOI: 10.1038/tp.2015.43] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 01/23/2015] [Accepted: 01/27/2015] [Indexed: 01/01/2023] Open
Abstract
We investigated in vivo neurochemical markers reflective of neuronal health and glial activation to determine if these could yield clues regarding the reduced fractional anisotropy (FA) of white matter and accelerated decline of FA with age in schizophrenia. Participants with schizophrenia and healthy controls completed diffusion tensor imaging to assess FA and proton magnetic resonance spectroscopy to assess neurochemical metabolites in the same frontal region. Frontal FA was significantly lower in the schizophrenia and declined more rapidly with age compared with the healthy control group. In both groups, N-acetylaspartate (NAA), a putative marker of neuronal integrity, and glutamate declined with age, and this decline was stronger in patients. Myo-inositol, a marker of glial cells, was negatively related to FA in both groups. The relationship between FA and age remained significant in schizophrenia even when controlling for all metabolites. The relationships of FA, NAA and myo-inositol to age appear to be independent of one another. The relationship between FA and myo-inositol was independently present in both patients and controls, even after controlling for age, indicating a potential general effect of neuroinflammation on white matter microstructure. Further studies are warranted to determine the underlying mechanism driving the accelerated FA decline with age in schizophrenia.
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Affiliation(s)
- J Chiappelli
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - L E Hong
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA,Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, PO Box 21247, Baltimore, MD 21228, USA. E-mail: or
| | - S A Wijtenburg
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - X Du
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - F Gaston
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - P Kochunov
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - L M Rowland
- Department of Psychiatry, Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, MD, USA
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235
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Liu N, Wen SN, Ruan YF, Zhang T, Li SN, Wu JH, Jiang CX, Tang RB, Long DY, Bai R, Yu RH, Du X, Dong JZ, Ma CS. QTc interval prolongation predicts the ablation outcome in hypertensive patients with paroxysmal atrial fibrillation. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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236
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Wang ZK, Du X, Wang YM, Li CQ, Lin FZ, Cao HJ, Ye SL, Hu JJ, Yuan J. Cohn process influences the functional anticoagulant activity of human protein C. Genet Mol Res 2015; 14:860-70. [PMID: 25730025 DOI: 10.4238/2015.february.2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cohn fraction IV (CFIV) is a byproduct of a plasma fractionation process known as the Cohn process. It is an inexpensive source of protein C, retaining about 90% of protein C (PC) in human plasma. We investigated whether PC is affected during the Cohn process and evaluated correlations among coagulant activity, amidolytic activity and PC antigen during the Cohn process. CFIV was redissolved with citrate-buffered saline for 5 h at 4°C, and then centrifuged at 3500 g for 40 min at 4°C. Functional anticoagulant activity was measured with a one-stage coagulation method based on activated partial thromboplastin time. The functional amidolytic activity of PC was determined using chromogenic substrate assay, and measurement of PC antigen was performed by ELISA. In CFIV, anticoagulant activity declined significantly, with a loss of >80%, while amidolytic activity was not significantly altered, compared to PC antigen. Prior to the Cohn process, high-rank correlations were observed in cryosupernatant, with rs = 0.921 for anticoagulant and amidolytic activities (P = 0.009), 0.896 for anticoagulant activity and antigen (P = 0.014) and 0.832 for amidolytic activity and antigen (P = 0.031). After the Cohn process in CFIV, there was also a high correlation between amidolytic activity and antigen (rs = 0.782, P = 0.038). There were no significant correlations between anticoagulant activity and antigen (rs = 0.223, P = 0.653), or anticoagulant and amidolytic activity (rs = 0.236, P = 0.675). We conclude that the Cohn process significantly influences the anticoagulant activity of PC. Compared to the antigen, PC lost greater than 80% of its anticoagulant activity, but retained its amidolytic activity, during the Cohn process.
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Affiliation(s)
- Z K Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - X Du
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - Y M Wang
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
| | - C Q Li
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - F Z Lin
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - H J Cao
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - S L Ye
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College, Chengdu, China
| | - J J Hu
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
| | - J Yuan
- Guizhou Taibang Biological Products Co., Ltd., Guiyang, China
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237
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Han C, An G, Du X. Three novel single nucleotide polymorphisms of the 3-hydroxy-3-methylglutaryl coenzyme A reductase gene associated with egg-production in chicken. Folia Biol (Praha) 2015; 62:203-9. [PMID: 25403074 DOI: 10.3409/fb62_3.203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Different single-strand conformation polymorphism (SSCP) patterns of the 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) gene amplified by six pairs of primers were sequenced. Comparisons among the six nucleotide sequences of three genotypes revealed three base substitutions (G-789-A, C-937-G, and A-2316-C) in the HMGCR gene. The genotypes of single nucleotide polymorphism 1 (SNP1) and SNP3 were significantly associated with the number of eggs (P < 0.01), and the different genotypes of SNP2 did not significantly influence the number of eggs. The genotypes of all three SNPs were not related to the hatching rate of fertilized eggs (P > 0.05). Of the three SNPs of the HMGCR gene, those genotypes with lower plasma very low-density lipoprotein (VLDL) concentrations had higher egg production. The 300-day egg production of the six studied haplotypes showed three levels (P < 0.01). The ADE and ACE haplotypes showed lower egg production than the other haplotypes. The ADE haplotype had the highest plasma VLDL concentration, and the ACE haplotype had the lowest plasma VLDL concentration. We concluded that specific variants of the HMGCR gene are associated with chicken egg production, and haplotypes with higher and lower plasma VLDL concentrations showed lower egg production than other haplotypes.
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238
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Gao X, Tsai A, Su Y, Moore S, Kiriazis H, Du X. Inhibition of the renin-angiotensin system (RAS) prevents inflammation associated cardiac rupture post myocardial infarction (MI). Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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239
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Zhao W, He DW, Wang YS, Hu Y, Du X, Hao X. Effects of acid dopants on the capacitance of polyaniline by using graphene hydrogels as substrates. RSC Adv 2015. [DOI: 10.1039/c5ra16348j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Acids have a great impact on the specific capacitance of polyaniline, and graphene/polyaniline (GP) doped with H2SO4possesses the highest capacitance compared with that of GP–HCl and GP–HClO4.
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Affiliation(s)
- W. Zhao
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
| | - D. W. He
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
| | - Y. S. Wang
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
| | - Y. Hu
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
| | - X. Du
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
| | - X. Hao
- Key Laboratory of Luminescence and Optical Information
- Ministry of Education
- Institute of Optoelectronic Technology
- Beijing Jiaotong University
- Beijing 100044
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240
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Du X, Yao B, Gonzalez-Cortes S, Kuznetsov VL, AlMegren H, Xiao T, Edwards PP. Catalytic dehydrogenation of propane by carbon dioxide: a medium-temperature thermochemical process for carbon dioxide utilisation. Faraday Discuss 2015; 183:161-76. [DOI: 10.1039/c5fd00062a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dehydrogenation of C3H8 in the presence of CO2 is an attractive catalytic route for C3H6 production. In studying the various possibilities to utilise CO2 to convert hydrocarbons using the sustainable energy source of solar thermal energy, thermodynamic calculations were carried out for the dehydrogenation of C3H8 using CO2for the process operating in the temperature range of 300–500 °C. Importantly, the results highlight the enhanced potential of C3H8 as compared to its lighter and heavier homologues (C2H6 and C4H10, respectively). To be utilised in this CO2 utilisation reaction the Gibbs free energy (ΔrGθm) of each reaction in the modelled, complete reacting system of the dehydrogenation of C3H8 in the presence of CO2 also indicate that further cracking of C3H6 will affect the ultimate yield and selectivity of the final products. In a parallel experimental study, catalytic tests of the dehydrogenation of C3H8 in the presence of CO2 over 5 wt%-Cr2O3/ZrO2 catalysts operating at 500 °C, atmospheric pressure, and for various C3H8 partial pressures and various overall GHSV (Gas Hourly Space Velocity) values. The results showed that an increase in the C3H8 partial pressure produced an inhibition of C3H8 conversion but, importantly, a promising enhancement of C3H6 selectivity. This phenomenon can be attributed to competitive adsorption on the catalyst between the generated C3H6 and inactivated C3H8, which inhibits any further cracking effect on C3H6 to produce by-products. As a comparison, the increase of the overall GHSV can also decrease the C3H8 conversion to a similar extent, but the further cracking of C3H6 cannot be limited.
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Affiliation(s)
- X. Du
- King Abdulaziz City of Science and Technology (KACST) – Oxford Centre of Excellence in Petrochemicals
- Inorganic Chemistry Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
| | - B. Yao
- SINOPEC Shanghai Petrochemical Company LTD
- Shanghai
- China
| | - S. Gonzalez-Cortes
- King Abdulaziz City of Science and Technology (KACST) – Oxford Centre of Excellence in Petrochemicals
- Inorganic Chemistry Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
| | - V. L. Kuznetsov
- King Abdulaziz City of Science and Technology (KACST) – Oxford Centre of Excellence in Petrochemicals
- Inorganic Chemistry Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
| | - Hamid AlMegren
- Petrochemicals Research Institute (PRI)
- King Abdulaziz City of Science and Technology (KACST)
- Riyadh 11442
- Saudi Arabia
| | - T. Xiao
- King Abdulaziz City of Science and Technology (KACST) – Oxford Centre of Excellence in Petrochemicals
- Inorganic Chemistry Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
| | - P. P. Edwards
- King Abdulaziz City of Science and Technology (KACST) – Oxford Centre of Excellence in Petrochemicals
- Inorganic Chemistry Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
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241
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Richart A, Heywood S, Kiriazis H, Du X, Siebel A, Kingwell B. High-density lipoprotein infusion reduces inflammation and improves post-ischaemic heart function in healthy and insulin resistant mice. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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242
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Wu YWC, Du X, van den Buuse M, Hill RA. Analyzing the influence of BDNF heterozygosity on spatial memory response to 17β-estradiol. Transl Psychiatry 2015; 5:e498. [PMID: 25603414 PMCID: PMC4312832 DOI: 10.1038/tp.2014.143] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 12/02/2014] [Indexed: 12/25/2022] Open
Abstract
The recent use of estrogen-based therapies as adjunctive treatments for the cognitive impairments of schizophrenia has produced promising results; however the mechanism behind estrogen-based cognitive enhancement is relatively unknown. Brain-derived neurotrophic factor (BDNF) regulates learning and memory and its expression is highly responsive to estradiol. We recently found that estradiol modulates the expression of hippocampal parvalbumin-positive GABAergic interneurons, known to regulate neuronal synchrony and cognitive function. What is unknown is whether disruptions to the aforementioned estradiol-parvalbumin pathway alter learning and memory, and whether BDNF may mediate these events. Wild-type (WT) and BDNF heterozygous (+/-) mice were ovariectomized (OVX) at 5 weeks of age and simultaneously received empty, estradiol- or progesterone-filled implants for 7 weeks. At young adulthood, mice were tested for spatial and recognition memory in the Y-maze and novel-object recognition test, respectively. Hippocampal protein expression of BDNF and GABAergic interneuron markers, including parvalbumin, were assessed. WT OVX mice show impaired performance on Y-maze and novel-object recognition test. Estradiol replacement in OVX mice prevented the Y-maze impairment, a Behavioral abnormality of dorsal hippocampal origin. BDNF and parvalbumin protein expression in the dorsal hippocampus and parvalbumin-positive cell number in the dorsal CA1 were significantly reduced by OVX in WT mice, while E2 replacement prevented these deficits. In contrast, BDNF(+/-) mice showed either no response or an opposite response to hormone manipulation in both behavioral and molecular indices. Our data suggest that BDNF status is an important biomarker for predicting responsiveness to estrogenic compounds which have emerged as promising adjunctive therapeutics for schizophrenia patients.
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Affiliation(s)
- Y W C Wu
- Behavioural Neuroscience Laboratory, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia,Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, VIC, Australia
| | - X Du
- Behavioural Neuroscience Laboratory, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - M van den Buuse
- Behavioural Neuroscience Laboratory, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia,Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, VIC, Australia,School of Psychological Science, La Trobe University, Melbourne, VIC, Australia
| | - R A Hill
- Behavioural Neuroscience Laboratory, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia,Behavioural Neuroscience Laboratory, Florey Institute of Neuroscience and Mental Health, Kenneth Myer Building, Genetics Lane, Royal Parade, University of Melbourne, Parkville, VIC 3010, Australia. E-mail:
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Qin C, Finlayson S, Rosli S, De Blasio M, Thomas C, AI-Sharea A, Murphy A, Kiriazis H, Yang Y, Morand E, Du X, Gao X, Ritchie R. Annexin-a1 deficiency exaggerates cardiac injury following myocardial infarction (MI) in vivo. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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244
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Kong QT, Du X, Yang R, Huang SY, Sang H, Liu WD. Chronically Recurrent and Widespread Tinea Corporis Due to Trichophyton rubrum in an Immunocompetent Patient. Mycopathologia 2014; 179:293-7. [DOI: 10.1007/s11046-014-9834-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 11/13/2014] [Indexed: 10/24/2022]
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245
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Ming CL, Du X, Qin L, Cui GH. Crystal structural and fluorescence properties of a two-dimensional cobaltous coordination polymer containing bis(benzimidazole) ligand. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614050205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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246
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Chen DDA, Peng S, Yin J, Yang T, Dong R, Tan K, Chen Y, Lu J, Du X, Xilin D. Explanation of colon cancer pathophysiology through analyzing the disrupted homeostasis of bile acids. Afr Health Sci 2014; 14:925-8. [PMID: 25834503 DOI: 10.4314/ahs.v14i4.22] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The colon plays a key role in regulating the homeostasis of bile acids. AIM The present study aims to evaluate the influence of colon cancer towards the homeostasis of bile acids. METHODS The free and conjugated bile acids were determined using ultraperformance LC (UPLC) coupled with ABI 4000 QTRAP triple quadrupole instruments. RESULTS The results showed that the free bile acids in serum of patients with colon cancers tend to increase, and the conjugated bile acids tended to decrease, especially for taurolithocholate (TLCA) (p<0.001). CONCLUSION The alteration of bile acids balance in colon cancers indicated the possibility of complicated diseases due to the disrupted balance of bile acids.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Du Xilin
- Department of general surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, PR China
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247
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Lu ZH, Liu N, Bai R, Yao Y, Li SN, Yu RH, Sang CH, Tang RB, Long DY, Du X, Dong JZ, Ma CS. HbA1c levels as predictors of ablation outcome in type 2 diabetes mellitus and paroxysmal atrial fibrillation. Herz 2014; 40 Suppl 2:130-6. [PMID: 25336239 DOI: 10.1007/s00059-014-4154-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/18/2014] [Accepted: 09/09/2014] [Indexed: 02/07/2023]
Abstract
AIMS The aim of this study was to evaluate whether the levels of HbA1c could predict the outcome of ablation in patients with type 2 diabetes mellitus (T2DM) and paroxysmal atrial fibrillation (PAF). PATIENTS AND METHODS The study comprised 149 consecutive patients with T2DM and PAF who underwent their first circumferential pulmonary vein isolation. HbA1c levels were measured before ablation. Cox proportional hazards models were constructed to assess the relationship between HbA1c levels and the recurrence of atrial fibrillation (AF). RESULTS Of the 149 patients, 60 (40.3 %) developed AF recurrence after a median 12-month follow-up. Multivariate Cox regression analysis revealed that left atrium size and HbA1c were independent predictors of recurrent atrial tachyarrhythmia. Receiver operating characteristic analysis demonstrated that an HbA1c cut-off value of ≥ 6.9 % predicted recurrence with 55.0 % sensitivity and 67.4 % specificity (AUC = 0.634). The success rate of ablation was 69.0 % in patients with an HbA1c value of < 6.9 % compared with 46.8 % in those with an HbA1c value of ≥ 6.9 % (log-rank test, p = 0.004). CONCLUSION High levels of HbA1c were associated with an increased risk of recurrence of atrial tachyarrhythmia in patients with T2DM and PAF undergoing catheter ablation.
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Affiliation(s)
- Z-H Lu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen Road, 100029, Beijing, Chaoyang District, P.R. China
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Du X, Wang YY, Zhao YQ, Cui GH. Crystal structure, thermal and fluorescent properties of a 1D Cd(II) coordination polymer based on the bis(benzimidazole) ligand. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614040222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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250
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Du X, Pang TY, Mo C, Renoir T, Wright DJ, Hannan AJ. The influence of the HPG axis on stress response and depressive-like behaviour in a transgenic mouse model of Huntington's disease. Exp Neurol 2014; 263:63-71. [PMID: 25246229 DOI: 10.1016/j.expneurol.2014.09.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 07/19/2014] [Accepted: 09/09/2014] [Indexed: 12/13/2022]
Abstract
Huntington's disease (HD) is an autosomal dominant, neurodegenerative disease caused by a CAG tandem repeat mutation encoding a polyglutamine tract expansion in the huntingtin protein. Depression is among the most common affective symptoms in HD but the pathophysiology is unclear. We have previously discovered sexually dimorphic depressive-like behaviours in the R6/1 transgenic mouse model of HD at a pre-motor symptomatic age. Interestingly, only female R6/1 mice display this phenotype. Sexual dimorphism has not been explored in the human HD population despite the well-established knowledge that the clinical depression rate in females is almost twice that of males. Female susceptibility suggests a role of sex hormones, which have been shown to modulate stress response. There is evidence suggesting that the gonads are adversely affected in HD patients, which could alter sex hormone levels. The present study examined the role sex hormones play on stress response in the R6/1 mouse model of HD, in particular, its modulatory effect on the hypothalamic-pituitary-adrenal (HPA) axis and depression-like behaviour. We found that the gonads of female R6/1 mice show atrophy at an early age. Expression levels of gonadotropin-releasing hormone (GnRH) were decreased in the hypothalamus of female HD mice, relative to wild-type female littermates, as were serum testosterone levels. Female serum estradiol levels were not significantly changed. Gonadectomy surgery reduced HPA-axis activity in female mice but had no effect on behavioural phenotypes. Furthermore, expression of the oestrogen receptor (ER) α gene was found to be higher in the adrenal cells of female HD mice. Finally, administration of an ERβ agonist diarylpropionitrile (DPN) rescued depressive-like behaviour in the female HD mice. Our findings provide new insight into the pathogenesis of sexually dimorphic neuroendocrine, physiological and behavioural endophenotypes in HD, and suggest a new avenue for therapeutic intervention.
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Affiliation(s)
- X Du
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia; Dept of Anatomy & Neuroscience, University of Melbourne, Parkville, VIC 3010, Australia.
| | - T Y Pang
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - C Mo
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - T Renoir
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia; Dept of Anatomy & Neuroscience, University of Melbourne, Parkville, VIC 3010, Australia
| | - D J Wright
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - A J Hannan
- Neural Plasticity Laboratory, Behavioural Neuroscience Division, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia; Dept of Anatomy & Neuroscience, University of Melbourne, Parkville, VIC 3010, Australia
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