31 results on '"Zhang, Weidong"'
Search Results
2. Evaluation of the serum tRNA-derived fragment tRF-5022B as a potential biomarker for the diagnosis of osteoarthritis
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Ni, Yingchen, Wu, Anqi, Li, Jianxin, Zhang, Weidong, and Wang, Youhua
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- 2023
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3. Achieving deep intratumoral penetration and multimodal combined therapy for tumor through algal photosynthesis
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Zhang, Xuwu, Zhang, Xinyue, Liu, Shiqi, Zhang, Weidong, Dai, Liang, Lan, Xifa, Wang, Desong, Tu, Wenkang, He, Yuchu, and Gao, Dawei
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- 2024
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4. Targeting E2 ubiquitin-conjugating enzyme UbcH5c by small molecule inhibitor suppresses pancreatic cancer growth and metastasis
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Qi, Simin, Guan, Xiaoqing, Zhang, Jia, Yu, Dehua, Yu, Xuefei, Li, Qinglin, Yin, Wenjuan, Cheng, Xiang-Dong, Zhang, Weidong, and Qin, Jiang-Jiang
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- 2022
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5. Retraction Note: Jacarelhyperol A induced apoptosis in leukaemia cancer cell through inhibition the activity of Bcl-2 proteins
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Zhang, Shoude, Yin, Jun, Li, Xia, Zhang, Jigang, Yue, Rongcai, Diao, Yanyan, Li, Honglin, Wang, Hui, Shan, Lei, and Zhang, Weidong
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- 2022
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6. Targeting KRAS mutant cancers: from druggable therapy to drug resistance
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Zhu, Chunxiao, Guan, Xiaoqing, Zhang, Xinuo, Luan, Xin, Song, Zhengbo, Cheng, Xiangdong, Zhang, Weidong, and Qin, Jiang-Jiang
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- 2022
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7. MiR-152-5p suppresses osteogenic differentiation of mandible mesenchymal stem cells by regulating ATG14-mediated autophagy
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Li, Shaoming, Gao, Ling, Zhang, Weidong, Yu, Yanbin, Zheng, Jingjing, Liang, Xiao, Xin, Shanshan, Ren, Wenhao, and Zhi, Keqian
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- 2022
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8. Cumulative experience improves the procedures of mechanical thrombectomy
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Liu, Chengfang, Liu, Yukai, Li, Zhongyuan, Gong, Pengyu, Xu, Zhaohan, Zhou, Junshan, and Zhang, Weidong
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- 2022
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9. Exploring biological basis of Syndrome differentiation in coronary heart disease patients with two distinct Syndromes by integrated multi-omics and network pharmacology strategy
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Wu, Gaosong, Zhao, Jing, Zhao, Jing, Song, Nixue, Zheng, Ningning, Zeng, Yuanyuan, Yao, Tingting, Zhang, Jingfang, Weng, Jieqiong, Yuan, Mengfei, Zhou, Hu, Shen, Xiaoxu, Li, Houkai, and Zhang, Weidong
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- 2021
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10. Multifaceted glycoadjuvant@AuNPs inhibits tumor metastasis through promoting T cell activation and remodeling tumor microenvironment
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Xu, Xiaojing, Gan, Minfeng, Ge, Youzhen, Yi, Cheng, Feng, Tianyun, Liu, Mengjie, Wu, Cenhao, Chen, Xiang, Zhang, Weidong, Zhao, Lixiang, and Zou, Jun
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- 2021
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11. RelB regulates the homeostatic proliferation but not the function of Tregs
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Zhou, Shuping, Wu, Weiwei, Wang, Zhaoxia, Wang, Zhaopeng, Su, Qinghong, Li, Xiaofan, Yu, Yong, Zhang, Weidong, Zhu, Mingzhao, and Lin, Wei
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- 2020
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12. Chronic whipworm infection exacerbates Schistosoma mansoni egg-induced hepatopathology in non-human primates
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Le, Loc, Khatoon, Sabiha, Jiménez, Paola, Peterson, Christopher, Kernen, Rebecca, Zhang, Weidong, Molehin, Adebayo J., Lazarus, Samra, Sudduth, Justin, May, Jordan, Karmakar, Souvik, Rojo, Juan U., Ahmad, Gul, Torben, Workineh, Carey, David, Wolf, Roman F., Papin, James F., and Siddiqui, Afzal A.
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- 2020
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13. Cardamonin inhibits breast cancer growth by repressing HIF-1α-dependent metabolic reprogramming
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Jin, Jinmei, Qiu, Shuiping, Wang, Ping, Liang, Xiaohui, Huang, Fei, Wu, Hui, Zhang, Beibei, Zhang, Weidong, Tian, Xinhui, Xu, Ren, Shi, Hailian, and Wu, Xiaojun
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- 2019
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14. LncRNA5251 inhibits spermatogenesis via modification of cell-cell junctions.
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Zhang, Cong, Lu, Dongxin, Niu, Tong, Sun, Zhongyi, Wang, Yandi, Han, Xiao, Xiong, Bohui, Shen, Wei, Sun, Qingyuan, Zhao, Yong, Zhang, Weidong, and Feng, Yanni
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SPERMATOGENESIS ,BIOLOGICAL systems ,CELL junctions ,GENE expression ,SPERMATOZOA ,SPERM motility ,TESTIS - Abstract
Background: Male factors-caused decline in total fertility has raised significant concern worldwide. LncRNAs have been identified to play various roles in biological systems, including spermatogenesis. This study aimed to explore the role of lncRNA5251 in mouse spermatogenesis. Methods: The expression of lncRNA5251 was modulated in mouse testes in vivo or spermatogonial stem cells (C18-4 cells) in vitro by shRNA. Results: The sperm motility in two generations mice after modulation of lncRNA5251 (muF0 and muF1) was decreased significantly after overexpression of lncRNA5251. GO enrichment analysis found that knockdown lncRNA5251 increased the expression of genes related to cell junctions, and genes important for spermatogenesis in mouse testes. Meanwhile, overexpressing lncRNA5251 decreased the gene and/or protein expression of important genes for spermatogenesis and immune pathways in mouse testes. In vitro, knockdown lncRNA5251 increased the expression of genes for cell junction, and the protein levels of some cell junction proteins such as CX37, OCLN, JAM1, VCAM1 and CADM2 in C18-4 cells. LncRNA5251 is involved in spermatogenesis by modulation of cell junctions. Conclusion: This will provide a theoretical basis for improving male reproductive ability via lncRNA. [ABSTRACT FROM AUTHOR]
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- 2023
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15. LAMP3 plays an oncogenic role in osteosarcoma cells partially by inhibiting TP53
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Liu, Shaoxian, Yue, Junyi, Du, Wei, Han, Jian, and Zhang, Weidong
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- 2018
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16. RETRACTED ARTICLE: Jacarelhyperol A induced apoptosis in leukaemia cancer cell through inhibition the activity of Bcl-2 proteins
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Zhang, Shoude, Yin, Jun, Li, Xia, Zhang, Jigang, Yue, Rongcai, Diao, Yanyan, Li, Honglin, Wang, Hui, Shan, Lei, and Zhang, Weidong
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- 2014
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17. Detection of infections with hepatitis B virus, hepatitis C virus, and human immunodeficiency virus by analyses of dried blood spots - performance characteristics of the ARCHITECT system and two commercial assays for nucleic acid amplification
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Ross, R, Stambouli, Oumaima, Grüner, Nico, Marcus, Ulrich, Cai, Wei, Zhang, Weidong, Zimmermann, Ruth, and Roggendorf, Michael
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Hepatitis B virus ,Medizin ,HIV Infections ,Hepacivirus ,Sensitivity and Specificity ,Molecular testing ,Specimen Handling ,Intravenous drug users ,Dried blood spots ,Human immunodeficiency virus infection ,Virology ,Hepatitis B virus infection ,Humans ,Desiccation ,Serological testing ,Research ,virus diseases ,Hepatitis B ,Hepatitis C ,digestive system diseases ,Infectious Diseases ,Blood ,Molecular Diagnostic Techniques ,HIV-1 ,Hepatitis C virus infection ,Transcription-mediated amplification ,Nucleic Acid Amplification Techniques ,Real-time PCR - Abstract
Background: Nowadays, dried blood spots (DBS) are primarily used to obtain diagnostic access to risk collectives such as intravenous drug users, who are prone to infections with hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV). Before DBS analyses can be used in this diagnostic context, however, a comprehensive evaluation of its performance characteristics must be conducted. To the best of our knowledge, the current study presents for the first time such essential data for the Abbott ARCHITECT system, which is currently the worldwide leading platform in this field of infection diagnostics. Methods: The investigation comprised 1,762 paired serum/DBS samples and a total of 3,524 determinations with the Abbott ARCHITECT HBsAg, anti-HBc, anti-HBs, anti-HCV and HIV-1-p24-antigen/anti-HIV 1/2 assays as well as with the artus HBV LC PCR and VERSANT HCV RNA qualitative (TMA) tests. Results: In the context of DBS testing, a specificity of 100% was recorded for the seven serological and molecular biological assays. The analytical sensitivity of HBsAg, anti-HBc, anti-HBs, anti-HCV, HIV-1-p24-antigen/anti-HIV 1/2, HBV DNA, and HCV RNA detections in DBS eluates was 98.6%, 97.1%, 97.5%, 97.8%, 100%, 93%, and 100%, respectively. Discussion/conclusions: The results obtained indicate that it is today possible to reliably detect HBsAg, anti-HBc, anti-HBs, anti-HCV and HIV-1-p24 antigen/anti-HIV 1/2 with state-of-the-art analytical systems such as the Abbott ARCHITECT in DBS eluates even when a comparatively high elution volume of 1,000 μl is used. They also provide evidence for the inherent analytical limits of DBS testing, which primarily concern the anti-HBc/anti-HBs system for individuals with HIV infections and nucleic acid tests with relatively low analytical sensitivity. OA Förderung 2013
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- 2013
18. Respiratory syncytial virus infection in Fischer 344 rats is attenuated by short interfering RNA against the RSV-NS1 gene
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Kong, Xiaoyuan, Zhang, Weidong, Lockey, Richard F, Auais, Alexander, Piedimonte, Giovanni, and Mohapatra, Shyam S
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Research ,respiratory system ,respiratory tract diseases - Abstract
Background Respiratory syncytial virus (RSV) causes severe bronchiolitis and is a risk factor for asthma. Since there is no commercially available vaccine against RSV, a short interfering RNA against the RSV-NS1gene (siNS1) was developed and its potential for decreasing RSV infection and infection-associated inflammation in rats was tested. Methods Plasmids encoding siNS1 or an unrelated siRNA were complexed with a chitosan nanoparticle delivery agent and administered intranasally. Control animals received a plasmid for a non-specific siRNA. After expression of the plasmid in lung cells for 24 hours, the rats were intranasally infected with RSV. Results Prophylaxis with siNS1 significantly reduced lung RSV titers and airway hyperreactivity to methacholine challenge compared to the control group. Lung sections from siNS1-treated rats showed a sizable reduction in goblet cell hyperplasia and in lung infiltration by inflammatory cells, both characteristics of asthma. Also, bronchoalveolar lavage samples from siNS1-treated animals had fewer eosinophils. Treatment of rats with siNS1 prior to RSV exposure was effective in reducing virus titers in the lung and in preventing the inflammation and airway hyperresponsiveness associated with the infection that has been linked to development of asthma. Conclusion The use of siNS1 prophylaxis may be an effective method for preventing RSV bronchiolitis and potentially reducing the later development of asthma associated with severe respiratory infections.
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- 2007
19. Antimicrobial susceptibility and mechanism of resistance in Shigella isolates from rural China.
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Mehata, Suresh, Duan, Guangcai, Song, Chunhua, Yang, Haiyan, and Zhang, Weidong
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This study was set up to assess the patterns of antimicrobial susceptibility and mutations in acrA-tolC genes of Shigella isolates and its association. One hundred and three isolates of Shigella spp. were tested to evaluate the antimicrobial susceptibility and mutation on acrA and tolC genes. The antimicrobial resistance profiles were: tetracycline (99%), ampicillin (85.4%), chloramphenicol (83.5%), trimethoprim (85.4%), ciprofloxacin (25.2%), cefazolin (3.9%), cefotaxime (3.9%), and gentamicin (2.9%). The rate of mutation in tolC was 90% ( S. flexneri) and 30.8% ( S. sonnei). Shigella flexneri isolates were more resistant than those of Shigella sonnei to chloramphenicol (97.8 versus 0.0%, p < 0.001) and ciprofloxacin (27.8 versus 7.7%, p = 0.106). High frequency of mutation was found in gene tolC (82.5%), but relatively less in acrA (22.3%). Shigella flexneri isolates were more mutated in tolC gene than S. sonnei (90 versus 30.8%, p < 0.001). Our study suggested that mutation of acrA and tolC may play major role in multiple antimicrobial resistance in Shigella spp. Shigella isolates are emerging which are resistant to first and third generation cephalosporin like cefazolin and cefotaxime, which is a matter of concern in terms of shigellosis treatment. [ABSTRACT FROM AUTHOR]
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- 2010
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20. HIV/AIDS knowledge in detention in Hunan province, China.
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Weidong Zhang, Xinya Wang, Xi Chen, Fan Lv, Zhang, Weidong, Wang, Xinya, Chen, Xi, and Lv, Fan
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INJECTIONS ,INFECTIOUS disease transmission ,AIDS prevention ,HIV infections - Abstract
Background: Injection drug use (IDU) is one of the major modes of HIV transmission in China. Drug use is illegal in China, all identified drug users are registered by Public Security Bureau, and most were sent to detention; most detainees engaged in high risk behaviours. In order to well understand the HIV/AIDS knowledge among detainees, a survey was conducted in different detention settings in Hunan province in 2008 to assess knowledge and attitudes about HIV among detainees and to provide useful information for HIV prevention and intervention strategies in detention centers.Methods: A cross-sectional survey was conducted in 10 detentions in Hunan province, China, and demographic information along with knowledge and attitude of HIV/AIDS was collected through standardized interviews. Descriptive statistics were used to describe HIV knowledge, attitudes, and education services among detainees.Results: There were 956 detainees interviewed from 10 detention centers. The male to female ratio was 2.24:1. The majority detainees received nine years of compulsory education, accounting for 51.5%. There were nine questions to assess HIV/AIDS knowledge of detainees, and 35.7% of those surveyed answered all nine questions correctly. There were 92.3% (882/956) who consented to be informed about the HIV antibody test results when tested, and 81% (774/956) elected that their family members were also informed. All detention centers had an organized HIV/AIDS education program.Conclusion: This study gives us an overview about HIV/AIDS knowledge in detention in Hunan province, and all detention sites in the study provided HIV/AIDS intervention services among detainees that focused on HIV/AIDS knowledge, attitude, and health behaviors. [ABSTRACT FROM AUTHOR]- Published
- 2010
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21. Attenuation of dengue virus infection by adeno-associated virus-mediated siRNA delivery.
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Zhang, Weidong, Singam, Rajeswari, Hellermann, Gary, Kong, Xiaoyuan, San Juan, Homero, Lockey, Richard F., Wu, Shuen-Ju, Porter, Kevin, and Mohapatra, Shyam S.
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DENGUE viruses , *DENGUE , *SMALL interfering RNA , *ADENOVIRUSES , *INFECTION - Abstract
Background: The need for safe and effective treatment of dense virus (DEN), a class A agent that causes dense hemorrhagic fever/dense shock syndrome, has been a critical global priority. An effective vaccine for DEN is not yet available. In this study the possibility of attenuating DEN infection using adeno-associated virus (AAA)-encoded short interfering RNA's (siRNA) was examined in Vero cells and human dendritic cells (DCs). Methods: A cassette encoding siRNA targeted to a 3' untranslated sequence common to all DEN serotypes was designed and tested for its ability to attenuate DEN infection by use of AAA delivery. Results: Vero cells or DCs infected with AAA-siRNA showed a significant, dose-dependent reduction in DEN infection. Treatment of DCs with AAA-siRNA also decreased the DEN-induced apoptosis of DCs and did not induce significant inflammation. Conclusion: These results demonstrate that AAA-mediated siRNA delivery is capable of reducing DEN infection in cells and may be useful in decreasing DEN replication in humans. [ABSTRACT FROM AUTHOR]
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- 2004
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22. An international effort towards developing standards for best practices in analysis, interpretation and reporting of clinical genome sequencing results in the CLARITY Challenge
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Brownstein, Catherine A, Beggs, Alan H, Homer, Nils, Merriman, Barry, Yu, Timothy W, Flannery, Katherine C, DeChene, Elizabeth T, Towne, Meghan C, Savage, Sarah K, Price, Emily N, Holm, Ingrid A, Luquette, Lovelace J, Lyon, Elaine, Majzoub, Joseph, Neupert, Peter, McCallie Jr, David, Szolovits, Peter, Willard, Huntington F, Mendelsohn, Nancy J, Temme, Renee, Finkel, Richard S, Yum, Sabrina W, Medne, Livija, Sunyaev, Shamil R, Adzhubey, Ivan, Cassa, Christopher A, de Bakker, Paul IW, Duzkale, Hatice, Dworzyński, Piotr, Fairbrother, William, Francioli, Laurent, Funke, Birgit H, Giovanni, Monica A, Handsaker, Robert E, Lage, Kasper, Lebo, Matthew S, Lek, Monkol, Leshchiner, Ignaty, MacArthur, Daniel G, McLaughlin, Heather M, Murray, Michael F, Pers, Tune H, Polak, Paz P, Raychaudhuri, Soumya, Rehm, Heidi L, Soemedi, Rachel, Stitziel, Nathan O, Vestecka, Sara, Supper, Jochen, Gugenmus, Claudia, Klocke, Bernward, Hahn, Alexander, Schubach, Max, Menzel, Mortiz, Biskup, Saskia, Freisinger, Peter, Deng, Mario, Braun, Martin, Perner, Sven, Smith, Richard JH, Andorf, Janeen L, Huang, Jian, Ryckman, Kelli, Sheffield, Val C, Stone, Edwin M, Bair, Thomas, Black-Ziegelbein, E Ann, Braun, Terry A, Darbro, Benjamin, DeLuca, Adam P, Kolbe, Diana L, Scheetz, Todd E, Shearer, Aiden E, Sompallae, Rama, Wang, Kai, Bassuk, Alexander G, Edens, Erik, Mathews, Katherine, Moore, Steven A, Shchelochkov, Oleg A, Trapane, Pamela, Bossler, Aaron, Campbell, Colleen A, Heusel, Jonathan W, Kwitek, Anne, Maga, Tara, Panzer, Karin, Wassink, Thomas, Van Daele, Douglas, Azaiez, Hela, Booth, Kevin, Meyer, Nic, Segal, Michael M, Williams, Marc S, Tromp, Gerard, White, Peter, Corsmeier, Donald, Fitzgerald-Butt, Sara, Herman, Gail, Lamb-Thrush, Devon, McBride, Kim L, Newsom, David, Pierson, Christopher R, Rakowsky, Alexander T, Maver, Aleš, Lovrečić, Luca, Palandačić, Anja, Peterlin, Borut, Torkamani, Ali, Wedell, Anna, Huss, Mikael, Alexeyenko, Andrey, Lindvall, Jessica M, Magnusson, Måns, Nilsson, Daniel, Stranneheim, Henrik, Taylan, Fulya, Gilissen, Christian, Hoischen, Alexander, van Bon, Bregje, Yntema, Helger, Nelen, Marcel, Zhang, Weidong, Sager, Jason, Zhang, Lu, Blair, Kathryn, Kural, Deniz, Cariaso, Michael, Lennon, Greg G, Javed, Asif, Agrawal, Saloni, Ng, Pauline C, Sandhu, Komal S, Krishna, Shuba, Veeramachaneni, Vamsi, Isakov, Ofer, Halperin, Eran, Friedman, Eitan, Shomron, Noam, Glusman, Gustavo, Roach, Jared C, Caballero, Juan, Cox, Hannah C, Mauldin, Denise, Ament, Seth A, Rowen, Lee, Richards, Daniel R, Lucas, F Anthony San, Gonzalez-Garay, Manuel L, Caskey, C Thomas, Bai, Yu, Huang, Ying, Fang, Fang, Zhang, Yan, Wang, Zhengyuan, Barrera, Jorge, Garcia-Lobo, Juan M, González-Lamuño, Domingo, Llorca, Javier, Rodriguez, Maria C, Varela, Ignacio, Reese, Martin G, De La Vega, Francisco M, Kiruluta, Edward, Cargill, Michele, Hart, Reece K, Sorenson, Jon M, Lyon, Gholson J, Stevenson, David A, Bray, Bruce E, Moore, Barry M, Eilbeck, Karen, Yandell, Mark, Zhao, Hongyu, Hou, Lin, Chen, Xiaowei, Yan, Xiting, Chen, Mengjie, Li, Cong, Yang, Can, Gunel, Murat, Li, Peining, Kong, Yong, Alexander, Austin C, Albertyn, Zayed I, Boycott, Kym M, Bulman, Dennis E, Gordon, Paul MK, Innes, A Micheil, Knoppers, Bartha M, Majewski, Jacek, Marshall, Christian R, Parboosingh, Jillian S, Sawyer, Sarah L, Samuels, Mark E, Schwartzentruber, Jeremy, Kohane, Isaac S, and Margulies, David M
- Abstract
Background: There is tremendous potential for genome sequencing to improve clinical diagnosis and care once it becomes routinely accessible, but this will require formalizing research methods into clinical best practices in the areas of sequence data generation, analysis, interpretation and reporting. The CLARITY Challenge was designed to spur convergence in methods for diagnosing genetic disease starting from clinical case history and genome sequencing data. DNA samples were obtained from three families with heritable genetic disorders and genomic sequence data were donated by sequencing platform vendors. The challenge was to analyze and interpret these data with the goals of identifying disease-causing variants and reporting the findings in a clinically useful format. Participating contestant groups were solicited broadly, and an independent panel of judges evaluated their performance. Results: A total of 30 international groups were engaged. The entries reveal a general convergence of practices on most elements of the analysis and interpretation process. However, even given this commonality of approach, only two groups identified the consensus candidate variants in all disease cases, demonstrating a need for consistent fine-tuning of the generally accepted methods. There was greater diversity of the final clinical report content and in the patient consenting process, demonstrating that these areas require additional exploration and standardization. Conclusions: The CLARITY Challenge provides a comprehensive assessment of current practices for using genome sequencing to diagnose and report genetic diseases. There is remarkable convergence in bioinformatic techniques, but medical interpretation and reporting are areas that require further development by many groups.
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- 2014
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23. Jacarelhyperol A induced apoptosis in leukaemia cancer cell through inhibition the activity of Bcl-2 proteins.
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Zhang, Shoude, Yin, Jun, Li, Xia, Zhang, Jigang, Yue, Rongcai, Diao, Yanyan, Li, Honglin, Wang, Hui, Shan, Lei, and Zhang, Weidong
- Abstract
Background: Hypericum japonicum Thunb. ex Murray is widely used as an herbal medicine for the treatment of hepatitis and tumours in China. However, the molecular mechanisms of its effects are unclear. Our previous research showed that extracts of H. japonicum can induce apoptosis in leukaemia cells. We also previously systematically analysed and isolated the chemical composition of H. japonicum.Methods: The fluorescence polarisation experiment was used to screen for inhibitors of Bcl-2 proteins which are proved as key proteins in apoptosis. The binding mode was modelled by molecular docking. We investigated the proliferation attenuating and apoptosis inducing effects of active compound on cancer cells by MTT assay and flow cytometry analysis. Activation of caspases were tested by Western blot. A broad-spectrum caspase inhibitor Z-VAD-FMK was used to investigate the caspases-dependence. In addition, co-immunoprecipitation was performed to analyse the inhibition of heterodimerization between anti-apoptotic Bcl-2 proteins with pro-apoptotic proteins. Moreover, in vivo activity was tested in a mouse xenograph tumour model.Result: Jacarelhyperol A (Jac-A), a characteristic constituent of H. japonicum, was identified as a potential Bcl-2 inhibitor. Jac-A showed binding affinities to Bcl-xL, Bcl-2, and Mcl-1 with Ki values of 0.46 μM, 0.43 μM, and 1.69 μM, respectively. This is consistent with computational modelling results, which show that Jac-A presents a favorable binding mode with Bcl-xL in the BH3-binding pocket. In addition, Jac-A showed potential growth inhibitory activity in leukaemia cells with IC50 values from 1.52 to 6.92 μM and significantly induced apoptosis of K562 cells by promoting release of cytochrome c and activating the caspases. Jac-A also been proved that its effect is partly caspases-dependent and can disrupt the heterodimerization between anti-apoptotic Bcl-2 proteins with pro-apoptotic proteins. Moreover, Jac-A dose-dependently inhibited human K562 cell growth in a mouse xenograph tumour model with low toxicity.Conclusion: In this study, a characteristic constituent of H. japonicum, Jac-A, was shown to induce apoptosis in leukaemia cells by mediating the Bcl-2 proteins. Therefore, we propose a new lead compound for cancer therapy with a low toxicity, and have provided evidence for using H. japonicum as an anti-cancer herb. [ABSTRACT FROM AUTHOR]- Published
- 2014
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24. Serum metabolic biomarkers distinguish metabolically healthy peripherally obese from unhealthy centrally obese individuals.
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Gao X, Zhang W, Wang Y, Pedram P, Cahill F, Zhai G, Randell E, Gulliver W, and Sun G
- Abstract
Background: Metabolic abnormalities are more associated with central obesity than peripheral obesity, but the underlying mechanisms are largely unknown. The present study was to identify serum metabolic biomarkers which distinguish metabolically unhealthy centrally obese (MUCO) from metabolically healthy peripherally obese (MHPO) individuals., Methods: A two-stage case-control study design was employed. In the discovery stage, 20 individuals (10 MHPO and 10 MUCO) were included and in the following validation stage, 79 individuals (20 normal weight (NW), 30 MHPO, 29 MUCO) were utilized. Study groups were matched for age, sex, physical activity and total dietary calorie intake with MHPO and MUCO additionally matched for BMI. Metabolic abnormality was defined as: 1) HOMA-IR > 4.27 (90(th) percentile), 2) high-density lipoprotein cholesterol < 1.03 mmol/L in men and < 1.30 mmol/L in women, 3) fasting blood glucose ≥ 5.6 mmol/L, and 4) waist circumference > 102 cm in men and > 88 cm in women. MUCO individuals had all of these abnormalities whereas MHPO and NW individuals had none of them. A targeted metabolomics approach was performed on fasting serum samples, which can simultaneously identify and quantify 186 metabolites., Results: In the discovery stage, serum leucine, isoleucine, tyrosine, valine, phenylalanine, alpha-aminoadipic acid, methioninesulfoxide and propionylcarnitine were found to be significantly higher in MUCO, compared with MHPO group after multiple testing adjustment. Significant changes of five metabolites (leucine, isoleucine, valine, alpha-aminoadipic acid, propionylcarnitine) were confirmed in the validation stage., Conclusions: Significantly higher levels of serum leucine, isoleucine, valine, alpha-aminoadipic acid, propionylcarnitine are characteristic of metabolically unhealthy centrally obese patients. The finding provides novel insights into the pathogenesis of metabolic abnormalities in obesity.
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- 2016
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25. Metabolomic profiles of myocardial ischemia under treatment with salvianolic acid B.
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Lu Y, Zheng Y, Liu X, Liang X, Ngai S, Li T, and Zhang W
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Background: Radix Salvia miltiorrhiza (Danshen) has been used as a principal herb in treating cardiovascular diseases in Chinese medicine. Salvianolic acid B (SA-B), a water-soluble active component of Danshen, was found to have anti-myocardial ischemia (anti-MI) effect. This study aims to investigate mechanisms of SA-B on MI., Methods: Five conventional Western medicines (isosorbide dinitrate, verapamil, propranolol, captopril and trimethazine) with different mechanisms for treating cardiovascular diseases were selected as positive references to compare with SA-B in changing of the metabolomic profiles in MI rats under treatment. Potential mechanisms of SA-B were further investigated in H9C2 cell line., Results: The metabolomic profiles between SA-B- and propranolol-treated MI rats were similar, since there was a big overlap between the two groups in the PLS-DA score plot. Finally, it was demonstrated that SA-B exhibited a protective effect on MI mainly by decreasing the concentration of cyclic adenosine monophosphate (cAMP) and Ca2+ and inhibiting protein kinase A (PKA)., Conclusion: SA-B and propanolol exhibited similar metabolomic profiles, indicating that the two drugs might have a similar mechanism.
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- 2012
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26. A new cultivation method for microbial oil production: cell pelletization and lipid accumulation by Mucor circinelloides.
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Xia C, Zhang J, Zhang W, and Hu B
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The recent energy crisis has triggered significant attention on the microbial synthesis of lipids, which comprise the raw material for biodiesel production. Microbial oil accumulation with filamentous fungi has great potential because filamentous fungi can form pellets during cell growth, and these pellets are much easier to harvest from cell broth. This paper focuses on the cell pelletization process of the oleaginous Mucor circinelloides. We have studied the effect of various cultural conditions on pelletized cell growth and lipid accumulation. This study is the first to report that pH adjustment during cell growth plays a key role in pellet formation of M. circinelloides and describes a handy method by which to induce cell pelletization in submerged fungal cultivation. Our study reveals that cell growth and lipid production are not significantly affected by pelletization and that lipid accumulation is triggered at stressed conditions, such as a high carbon-to-nitrogen ratio and high temperature.
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- 2011
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27. Need for continual education about disaster medicine for health professionals in China--a pilot study.
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Huang B, Li J, Li Y, Zhang W, Pan F, and Miao S
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- Adult, China, Cross-Sectional Studies, Female, Humans, Male, Pilot Projects, Disaster Medicine education, Education, Medical, Continuing, Health Personnel education, Needs Assessment
- Abstract
Background: Disaster Medicine training is not included in medical education curriculum in China, even though the country has suffered various disasters annually. We intended to assess the need for continual education regarding disaster management for health professionals in China., Methods: A survey was conducted among 324 health professionals who participated in the response to the Wenchuan earthquake medical relief and public health assessment in October, 2008., Results: The most of participants (67.3%) received informal disaster medicine training, and only a few (12.7%) participated in disaster drills. Most of the participants wanted to get continual education about disaster medicine training (89.8%), but prefer on-line training course for the flexibility of time scheduling and travel through China., Conclusion: The need for continual disaster medicine training is high; health professionals should be equipped with knowledge and skills for disaster management.
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- 2011
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28. Plasmid-encoded NP73-102 modulates atrial natriuretic peptide receptor signaling and plays a critical role in inducing tolerogenic dendritic cells.
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Zhang W, Cao X, Chen D, Wang JW, Yang H, Wang W, Mohapatra S, Hellermann G, Kong X, Lockey RF, and Mohapatra SS
- Abstract
Background: Atrial natriuretic peptide (ANP) is an important endogenous hormone that controls inflammation and immunity by acting on dendritic cells (DCs); however, the mechanism remains unclear., Objective: We analyzed the downstream signaling events resulting from the binding of ANP to its receptor, NPRA, and sought to determine what aspects of this signaling modulate DC function., Methods: We utilized the inhibitory peptide, NP73-102, to block NPRA signaling in human monocyte-derived DCs (hmDCs) and examined the effect on DC maturation and induced immune responses. The potential downstream molecules and interactions among these molecules involved in NPRA signaling were identified by immunoprecipitation and immunoblotting. Changes in T cell phenotype and function were determined by flow cytometry and BrdU proliferation ELISA. To determine if adoptively transferred DCs could alter the in vivo immune response, bone marrow-derived DCs from wild-type C57BL/6 mice were incubated with ovalbumin (OVA) and injected i.v. into C57BL/6 NPRA-/- knockout mice sensitized and challenged with OVA. Lung sections were stained and examined for inflammation and cytokines were measured in bronchoalveolar lavage fluid collected from parallel groups of mice., Results: Inhibition of NPRA signaling in DCs primes them to induce regulatory T cells. Adoptive transfer of wild type DCs into NPRA-/- mice reverses the attenuation of lung inflammation seen in the NPRA-knockout model. NPRA is associated with TLR-2, SOCS3 and STAT3, and inhibiting NPRA alters expression of IL-6, IL-10 and TGF-β, but not IL-12., Conclusions: Modulation of NPRA signaling in DCs leads to immune tolerance and TLR2 and SOCS3 are involved in this induction.
- Published
- 2011
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29. PD-1 expression on peripheral CD8+ TEM/TEMRA subsets closely correlated with HCV viral load in chronic hepatitis C patients.
- Author
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Shen T, Zheng J, Xu C, Liu J, Zhang W, Lu F, and Zhuang H
- Subjects
- Adult, Alanine Transaminase blood, Biomarkers, CD8-Positive T-Lymphocytes immunology, Cells, Cultured, Flow Cytometry, Humans, Middle Aged, Programmed Cell Death 1 Receptor, T-Lymphocyte Subsets immunology, Antigens, CD biosynthesis, Apoptosis Regulatory Proteins biosynthesis, CD8-Positive T-Lymphocytes chemistry, Gene Expression, Hepacivirus isolation & purification, Hepatitis C, Chronic immunology, T-Lymphocyte Subsets chemistry, Viral Load
- Abstract
Background: Tight correlation between host circulating CD8+ T cell-mediated immune response and control of viral replication is classical characteristic of long-term HCV infection. CD8+ T cell maturation/activation markers are expected to be associated with viral replication and disease progression in chronic HCV infection. The aim of the present study was to explore novel markers on CD8+ T cells with ability to evaluate HCV viral replication and disease progression., Methods: PBMCs were isolated from 37 chronic HCV-infected patients and 17 healthy controls. Distributed pattern of CD8+ T cells subsets and expression of PD-1, CD38, HLA-DR and CD127 were analyzed by flow cytometry. The correlation between expression of surface markers and HCV viral load or ALT was studied., Results: Declined naïve and increased TEMRA CD8+ T subsets were found in HCV-infected individuals compared with healthy controls. Percentage and MFI of PD-1, CD38 and HLA-DR on all CD8+ T cell subsets were higher in HCV-infected patients than healthy controls. In contrast, CD127 expression on CD8+ TCM showed an opposite trend as PD-1, CD38 and HLA-DR did. In chronic HCV infection, MFI of PD-1 on CD8+ TEM (p < 0.0001) and TEMRA (p = 0.0015) was positively correlated with HCV viral load while HLA-DR expression on non-naive CD8+ T cell subsets (p < 0.05) was negatively correlated with HCV viral load., Conclusion: PD-1 level on peripheral CD8+ TEM/TEMRA was highly correlated with HCV viral load in chronic HCV-infected patients, which made PD-1 a novel indicator to evaluate HCV replication and disease progression in chronic hepatitis C patients.
- Published
- 2010
- Full Text
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30. HIV/AIDS knowledge in detention in Hunan province, China.
- Author
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Zhang W, Wang X, Chen X, and Lv F
- Subjects
- Adolescent, Adult, Age Distribution, China, Cross-Sectional Studies, Educational Status, Female, HIV Infections psychology, Humans, Male, Marital Status, Middle Aged, Prisoners education, Prisoners statistics & numerical data, Sex Distribution, Surveys and Questionnaires, Young Adult, HIV Infections prevention & control, Health Knowledge, Attitudes, Practice, Health Promotion methods, Prisoners psychology
- Abstract
Background: Injection drug use (IDU) is one of the major modes of HIV transmission in China. Drug use is illegal in China, all identified drug users are registered by Public Security Bureau, and most were sent to detention; most detainees engaged in high risk behaviours. In order to well understand the HIV/AIDS knowledge among detainees, a survey was conducted in different detention settings in Hunan province in 2008 to assess knowledge and attitudes about HIV among detainees and to provide useful information for HIV prevention and intervention strategies in detention centers., Methods: A cross-sectional survey was conducted in 10 detentions in Hunan province, China, and demographic information along with knowledge and attitude of HIV/AIDS was collected through standardized interviews. Descriptive statistics were used to describe HIV knowledge, attitudes, and education services among detainees., Results: There were 956 detainees interviewed from 10 detention centers. The male to female ratio was 2.24:1. The majority detainees received nine years of compulsory education, accounting for 51.5%. There were nine questions to assess HIV/AIDS knowledge of detainees, and 35.7% of those surveyed answered all nine questions correctly. There were 92.3% (882/956) who consented to be informed about the HIV antibody test results when tested, and 81% (774/956) elected that their family members were also informed. All detention centers had an organized HIV/AIDS education program., Conclusion: This study gives us an overview about HIV/AIDS knowledge in detention in Hunan province, and all detention sites in the study provided HIV/AIDS intervention services among detainees that focused on HIV/AIDS knowledge, attitude, and health behaviors.
- Published
- 2010
- Full Text
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31. Regional differences in HIV prevalence among drug users in China: potential for future spread of HIV?
- Author
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Kretzschmar M, Zhang W, Mikolajczyk RT, Wang L, Sun X, Kraemer A, and Lv F
- Subjects
- Adult, China epidemiology, Enzyme-Linked Immunosorbent Assay, Female, Geography, HIV Antibodies immunology, HIV Seropositivity complications, HIV Seropositivity transmission, HIV-1 immunology, Humans, Logistic Models, Male, Prevalence, Risk Factors, Risk-Taking, Sentinel Surveillance, Substance Abuse, Intravenous complications, Disease Outbreaks, HIV Seropositivity epidemiology, HIV Seroprevalence, Substance Abuse, Intravenous epidemiology
- Abstract
Background: Drug use and in particular injecting drug use has been at the forefront of the explosive spread of HIV in general populations in many countries in Asia. There is concern that also in China increased HIV incidence in drug users might spark off a generalized epidemic in the wider population. Close monitoring of HIV incidence and risk factors in drug users is therefore important to be able to target interventions effectively. Second generation surveillance was launched to assess HIV prevalence and risk behaviours jointly with the purpose of describing trends and predicting future developments. To assess whether these goals were fulfilled among drug users in China we provide an analysis of risk factors for HIV infection and of regional differences in HIV prevalence., Methods: We analysed data collected in 2005 in 21 drug user second generation surveillance sentinel sites from 14 provinces in China. We used random effects logistic regression to test for risk factors for HIV infection and regional differences., Results: The overall HIV-1 antibody prevalence was 5.4% (279/5128); 4.9% among injecting drug users (IDU) not sharing needles and 3.7% among non-injecting drug users. We found substantial heterogeneity among the surveillance sites with prevalence rates ranging between 0% and 54%. HIV status was strongly affected by the regional prevalence of HIV. Risk behaviours were highly prevalent in regions where HIV prevalence is still low. The distribution of duration of drug use in different sites indicated different stages of the drug use epidemics., Conclusion: ]Regional differences in HIV prevalence in China reflect different stages of the drug use and HIV epidemics rather than differences in risk behaviours. Therefore, outbreaks of HIV among drug users in regions where prevalence is still low can be expected in the future. However, methodological limitations of surveillance embedded into routine systems limit the usability of existing data. More standardized approaches to data collection in secondary generation HIV surveillance are necessary to better understand regional differences in risk behaviour and prevalence and to design targeted intervention for those regions at risk of experiencing outbreaks.
- Published
- 2008
- Full Text
- View/download PDF
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