نتایج جستجو برای: core antigen

تعداد نتایج: 410660  

Journal: :archives of clinical infectious diseases 0
helia azimi infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran; department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran maryam vaezjalali infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran; department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran; department of microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran. tel: +98-2123872556, fax: +98-2122439972

conclusions hepatitis b core antibody immunoglobulin m positivity is different in healthy blood donors of different countries according to the prevalence of chronic hepatitis b and its vaccination. based on the current study findings, all positive samples of hepatitis b core antibody in iranian blood banks should be considered as candidates for occult hepatitis b not just the window period infe...

Journal: :The Journal of clinical investigation 2014
Jeffrey C Nolz John T Harty

Memory and naive CD8+ T cells exhibit distinct trafficking patterns. Specifically, memory but not naive CD8+ T cells are recruited to inflamed tissues in an antigen-independent manner. However, the molecular mechanisms that regulate memory CD8+ T cell trafficking are largely unknown. Here, using murine models of infection and T cell transfer, we found that memory but not naive CD8+ T cells dyna...

Journal: :Journal of bacteriology 2009
Nikolay A Paramonov Joseph Aduse-Opoku Ahmed Hashim Minnie Rangarajan Michael A Curtis

Porphyromonas gingivalis synthesizes two lipopolysaccharides (LPSs), O-LPS and A-LPS. Here, we elucidate the structure of the core oligosaccharide (OS) of O-LPS from two mutants of P. gingivalis W50, Delta PG1051 (WaaL, O-antigen ligase) and Delta PG1142 (O-antigen polymerase), which synthesize R-type LPS (core devoid of O antigen) and SR-type LPS (core plus one repeating unit of O antigen), re...

ژورنال: :مجله دانشکده پزشکی اصفهان 0
مریم یزدانیان دانشجوی دکتری، گروه بیوتکنولوژی دارویی، انستیتو پاستور ایران، تهران، ایران آرش معمارنژادیان استادیار، بخش هپاتیت و ایدز، انستیتو پاستور ایران، تهران، ایران حسین خان احمد شهرضا استادیار، مرکز تحقیقات بیماری های ارثی کودکان، دانشگاه علوم پزشکی اصفهان، اصفهان و بخش تحقیقات bcg، مجتمع تولیدی و تحقیقاتی انستیتو پاستور ایران، تهران، ایران حوریه سلیمانجاهی دانشیار، گروه ویروس شناسی، دانشکده ی پزشکی، دانشگاه تربیت مدرس، تهران، ایران فاطمه متولی کارشناس ارشد، بخش هپاتیت و ایدز، انستیتو پاستور، تهران، ایران فرزین روحوند دانشیار، بخش ویروس شناسی، انستیتو پاستور ایران، تهران، ایران

مقدمه: با وجود این که ویروس هپاتیت c (hepatitis c virus یا hcv) یکی از عوامل مهم ایجاد کننده ی بیماری های مزمن کبدی می باشد، هنوز واکسن مناسبی برای آن تهیه نشده است. هدف از این مطالعه، ساخت یک سازه ی بیان کننده ی توالی c‏ore (aa: 1-122)  ویروس هپاتیت c متصل به آنتی ژن s ویروس هپاتیت b (hbsag یا hepatitis b surface antigen) و تأیید بیان آن در سلول های یوکاریوتی بود. روش ها: در ابتدا توالی core ا...

2011
Tao Shen Xiangmei Chen Weidong Zhang Yuanlin Xi Guanghua Cao Yuhong Zhi Shuiwang Wang Chunhui Xu Lai Wei Fengmin Lu Hui Zhuang

Development of HCV infection is typically followed by chronic hepatitis C (CHC) in most patients, while spontaneous HCV viral clearance (SVC) occurs in only a minority of subjects. Compared with the widespread application of HCV RNA testing by quantitative RT-PCR technique, HCV core antigen detection may be an alternative indicator in the diagnosis of hepatitis C virus infections and in monitor...

Journal: :Transfusion 2003
Dinesh O Shah Chi D Chang Lily X Jiang Kevin Y Cheng A Scott Muerhoff Robin A Gutierrez Thomas P Leary Suresh M Desai Irenea V Batac-Herman Vince A Salbilla Alla S Haller James L Stewart George J Dawson

BACKGROUND HCV exposure among blood donors is serologically determined by detection of antibodies to HCV (anti-HCV); however, the recent development of an assay for the detection of HCV core antigen identifies infection before anti-HCV development. Simultaneous detection of HCV core antigen and anti-HCV would shorten the window period before seroconversion over conventional HCV antibody screeni...

2012
Gioacchino Li Cavoli Carmela Zagarrigo Onofrio Schillaci Francesca Servillo Angelo Tralongo Mario Coglitore Filippo Spadaro Concetta Scimeca Natalia Li Destri Ugo Rotolo

Hepatitis C virus infection is a persistent worldwide public health concern. The prevalence of HCV infection is much higher in patients on chronic haemodialysis (HD) than in the general population. HCV infection can detrimentally affect patients throughout the spectrum of chronic kidney disease. Despite the control of blood products, hepatitis C virus transmission is still being observed among ...

Journal: :hepatitis monthly 0
rym ayari laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected]; laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected] yousr lakhoua-gorgi laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected] lamjed bouslama borj cedria center for biotechnology, hammam lif, tunisia imen safar laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected] fatma houissa kchouk laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected] houda aouadi laboratory of immunology research center, kidney transplantation and immunopathology (lr03sp01), charles nicolle hospital, university of tunis el manar, tunisia +216-25462623, [email protected]

background in this study, we evaluated the prevalence of the most common mutations occurring in enhancer ii (enhii), basal core promoter (bcp), precore (pc), and core (c) regions of hepatitis b virus (hbv) genome. objectives we also investigated the correlation between hbv variants, their genotypes, and patients’ hbe antigen (hbeag: soluble shape of the capsid antigen) status patients and metho...

Journal: :Proceedings of the National Academy of Sciences 1990

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