نتایج جستجو برای: ویروس gbv

تعداد نتایج: 4725  

ژورنال: :پژوهش های آسیب شناسی زیستی 0
laleh yazdani department of virology, faculty of medical sciences, tarbiat modares university, tehran, iran mehrdad ravanshad department of virology, faculty of medical sciences, tarbiat modares university, tehran, iran zahra khanlari department of virology, faculty of medical sciences, tarbiat modares university, tehran, iran ramin yaghoobi shiraz transplant research center, shiraz university of medical sciences, shiraz, iran

هدف: gb ویروس c جزء ویروس‏های منتقل شونده از راه خون، فرآورده‏های خونی و از طریق جنسی است و از آن‏جا که راه انتقال آن با ویروس‏های عامل هپاتیت مشترک است، طی این مطالعه ویروس را در بین افراد hbsag مثبت با روش حساس‏تر semi nested-pcr جداسازی کرده و ژنوتیپ‏های ویروس با روش rflp تعیین شد. مواد و روش‏ها: در تحقیقی که به‏صورت مقطعی بین سال‏های 1389 تا 1390، روی 100 نمونه سرمی افراد hbsag مثبت انجام ش...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده پزشکی 1390

gbv-c از اعضای خانواده فلاوی ویریده بوده و به تازگی پیشنهاد شده که در جنس جدیدی در این خانواده بنام پگی ویروس طبقه بندی شود. انتشار جهانی این ویروس شایع بوده تا جایی که، بعضی مطالعات یک چهارم جمعیت انسانی را آلوده به این ویروس می دانند. راه های انتقال این ویروس از مسیر خون و فرآورده های آن، مادر به جنین و با میزان بسیار بیشتر نسبت به سایر مسیرها، از طریق جنسی است. از آنجا که راه انتقال این ویرو...

2011
Emma L. Mohr Krishna K. Murthy James H. McLinden Jinhua Xiang Jack T. Stapleton

GB virus C (GBV-C) is a common, non-pathogenic human virus that infects lymphocytes. Persistent GBV-C infection of humans with coexistent human immunodeficiency virus (HIV) infection is associated with prolonged survival, and GBV-C replication inhibits HIV replication in vitro. A GBV-C virus variant was identified in chimpanzees in 1998 and was named GBV-C(trog) or GBV-C(cpz). The prevalence an...

2016
Emma Louise Mohr Emma Mohr

GB virus C (GBV-C) is a nonpathogenic lymphotropic virus that replicates in B and T lymphocytes. Infection with GBV-C is documented worldwide and is common: between 1% and 5% of healthy blood donors are viremic at the time of donation. Antibodies to GBV-C proteins are not usually detected during viremia, and antibodies to the GBV-C envelope glycoprotein E2 develop following the clearance of vir...

2014
Jason T. Blackard Gang Ma Jeffrey A. Welge Caroline C. King Lynn E. Taylor Kenneth H. Mayer Robert S. Klein David D. Celentano Jack D. Sobel Denise J. Jamieson Lytt Gardner

BACKGROUND GB virus C (GBV-C) may have a beneficial impact on HIV disease progression; however, the epidemiologic characteristics of this virus are not well characterized. Behavioral factors and gender may lead to differential rates of GBV-C infection; yet, studies have rarely addressed GBV-C infections in women or racial/ethnic minorities. Therefore, we evaluated GBV-C RNA prevalence and genot...

Journal: :The Journal of infectious diseases 2012
Farnaz Vahidnia M Petersen G Rutherford M Busch S Assmann J T Stapleton B Custer

BACKGROUND GB virus C (GBV-C) infection is transmitted by blood exposure and associated with lower human immunodeficiency virus (HIV) load and slower HIV disease progression. Few studies describe predictors of acute GBV-C infection following transfusion in HIV-infected patients. METHODS We used a limited-access database from the National Heart Lung and Blood Institute's Viral Activation Trans...

2012
Hossein Keyvani Avid Mohammadi Masoud Sabouri Ghannad Mahboobeh Hajabdolbaghi

BACKGROUND The picture that has emerged from studies investigating HIV infected people with GBV-C viremia is that they have lower plasma HIV viral loads in comparison with HIV-positive people who did not have the GBV-C viremia. OBJECTIVES Since GBV-C HIV coinfection has not been studied in Iran, we have designed a survey to study the outcomes of GBV-C infection on HIV infected individuals. ...

Journal: :The Journal of infectious diseases 2009
W Bhanich Supapol R S Remis J Raboud M Millson J Tappero R Kaul P Kulkarni M S McConnell P A Mock J M McNicholl N Vanprapar S Asavapiriyanont N Shaffer S Butera

BACKGROUND GB virus C (GBV-C) is an apathogenic virus that inhibits human immunodeficiency virus (HIV) replication in vitro. Mother-to-child transmission (MTCT) of GBV-C has been observed in multiple small studies. Our study examined the rate and correlates of MTCT of GBV-C in a large cohort of GBV-C-HIV-coinfected pregnant women in Thailand. METHODS Maternal delivery plasma specimens from 24...

Journal: :The Journal of general virology 1997
T P Leary S M Desai J C Erker I K Mushahwar

Recently, gene fragments of several novel variants of GB virus A were isolated from the serum of distinct monkey species that had not been experimentally inoculated with an infectious agent. These variants appeared to be species-specific in that sequences isolated within a species were virtually identical, though sequences were strikingly different when compared between each species. In the pre...

Journal: :Gut 1999
R Halasz L Barkholt C Lara C Hultgren Y Ando U Broomé B Fischler A Nemeth B G Ericzon A Sönnerborg M Sällberg

BACKGROUND The role of the recently discovered GB virus C (GBV-C)/hepatitis G virus in fulminant hepatic failure (FHF) has been debated. Although GBV-C RNA has been detected in many cases of FHF, recent data suggest that the relation between GBV-C and FHF may be accidental. AIMS To retrospectively investigate the possible relation between the presence of GBV-C markers (RNA or antibodies to th...

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