نتایج جستجو برای: occult infection

تعداد نتایج: 464882  

2011
Jae Young Jang Soung Won Jeong Sung Ran Cheon Sae Hwan Lee Sang Gyune Kim Young Koog Cheon Young Seok Kim Young Deok Cho Hong Soo Kim So Young Jin Yun Soo Kim Boo Sung Kim

BACKGROUND/AIMS We investigated the frequency of occult hepatitis B virus (HBV) infection in anti-hepatitis C virus (HCV)-positive individuals and the effects of occult HBV infection on the severity of liver disease. METHODS Seventy-one hepatitis B virus surface-antigen (HBsAg)-negative patients were divided according to their HBV serological status into groups A (anti-HBc positive, anti-HBs ...

Journal: :Clinical and vaccine immunology : CVI 2007
Juan A Quiroga Inmaculada Castillo Javier Bartolomé Vicente Carreño

Antibody responses to the GOR autoepitope are frequently detected among anti-hepatitis C virus (anti-HCV)-positive patients with chronic hepatitis. Sera from 110 anti-HCV-negative patients with occult HCV infection, as diagnosed by detection of HCV RNA in hepatic tissue, were investigated for GOR antibody reactivity. A positive test for anti-GOR immunoglobulin G (IgG) was found for 22 (20%) of ...

Journal: :hepatitis monthly 0
hossein keyvani department of virology, iran university of medical sciences, tehran, ir iran farah bokharaei-salim department of virology, iran university of medical sciences, tehran, ir iran; department of virology, iran university of medical sciences, tehran, ir iran. tel/fax: +98-2188602205 seyed hamidreza monavari department of virology and anti-microbial resistant research center, iran university of medical sciences, tehran, ir iran maryam esghaei department of virology, iran university of medical sciences, tehran, ir iran mohssen nassiri toosi department of gastroenterology, imam khomeini hospital, tehran university of medical sciences, tehran, ir iran shahin fakhim department of civil engineering, islamic azad university, shahre qods, tehran, ir iran

results of 45 patients, 4 (8.9% [95% ci: 4.4-15.6]) had detectable genomic hcv-rna in their pbmc specimens. hcv genotypes were determined in the pbmcs of these subjects showed that 2 (50.0%) subjects with occult hcv infection had hcv subtype 3a, and 2 (50.0%) had hcv subtype 1b. conclusions this study found that 8.9 % of the iranian candidates for liver transplant with cryptogenic cirrhosis had...

Journal: :Gastroenterology 2017
Sandra Elmasry Sanya Wadhwa Bo-Ram Bang Linda Cook Shefali Chopra Gary Kanel Brian Kim Tammy Harper Zongdi Feng Keith R Jerome Jeffrey A Kahn Takeshi Saito

Occult infection with hepatitis C virus (HCV) is defined as the presence of the HCV genome in either liver tissue or peripheral blood monocytes, despite constant negative results from tests for HCV RNA in serum. We investigated whether patients who maintained a sustained virologic response 12 weeks after therapy (SVR12) with direct-acting antiviral (DAA) agents for recurrent HCV infection after...

2013
Chih-Lang Lin Rong-Nan Chien Shi-Ming Lin Po-Yuan Ke Chen-Chun Lin Chau-Ting Yeh

Occult hepatitis B virus (HBV) infection is defined as persistence of HBV DNA in liver tissues, with or without detectability of HBV DNA in the serum, in individuals with negative serum HBV surface antigen (HBsAg). Despite accumulating evidence suggesting its important clinical roles, the molecular and virological basis of occult hepatitis B remains unclear. In an attempt to establish new hepat...

اصلانی مهر, معصومه, حق ازلی, سپیده , خباز, فرهاد, رجب خانی, زهرا, علیزاده کوشکوهی, صفر علی , محمدی, زهرا, مهدی نژاد, پروین, چرخچیان, ملیحه,

  Background : Hbs-Ag positivity rates in dialysis patients correlate with endemicity in the general population. There is a subset of patients with occult HBV infection that defined as the presence of detectable HBV-DNA by PCR in patients who are negative for Hbs-Ag. We decided to detect the occult HBV cases in our hemodialysis patients.   Methods : With support of charity society of renal pati...

Journal: :World journal of gastroenterology 2007
Patricia M Mulrooney-Cousins Tomasz I Michalak

Hepatitis B virus (HBV) is a highly pathogenic virus that causes chronic liver diseases in millions of people globally. In addition to a symptomatic, serologically evident infection, occult persistent HBV carriage has been identified since nucleic acid amplification assays of enhanced sensitivity became introduced for detection of hepadnaviral genomes and their replicative intermediates. Curren...

Journal: :Journal of Clinical and Analytical Medicine 2013

2016
Eleanor A. Powell Sanam Razeghi Stephen Zucker Jason T. Blackard

INTRODUCTION Occult hepatitis B virus (HBV) is defined by the presence of HBV DNA in patient sera in the absence of HBsAg. Occult HBV has been associated with hepatocellular carcinoma, reactivation during immune suppression, and transmission to others. While the hepatitis B vaccine is very effective at preventing chronic HBV infection, recent studies indicate it is less effective at preventing ...

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