Hepatitis B virus mutants associated with hepatitis b surface antigen loss: Chicken or egg?
نویسندگان
چکیده
منابع مشابه
Detecting Hepatitis B Surface Antigen Mutants
Hepatitis B viral mutants can emerge in patients as a result of selection pressure from either immune response or treatment options. Mutations that occur within the immunodominant epitopes of hepatitis B surface antigen (HBsAg) allow mutant virus to propagate in the presence of a neutralizing immune response, while wild-type virus is reduced to undetectable levels. HBsAg mutants present as fals...
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The genome of HB V virus of serotype ayw cloned in pBR322 and expression shuttle vector p YES2 were used for construction of the HBsAg chimeric genes and their expression in Saccharomyces cerevisiae. Two recombinant plasmids were constructed. One of them contained the coding sequences for the major polypeptide of surface antigen. Another construct carried the major polypeptide with the pre-S2 a...
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Literature review shows that hepatitis C infection may increase the risk of non-hodgkin lymphoma. Reactivation of hepatitis B infection has been reported in patients with hairy cell leukemia after chemotherapy and/or splenectomy. We present hepatitis B surface (HBs) antigenemia and concurrent hepatitis C virus (HCV) seropositivity in a case of hairy cell leukemia. Key Words: Hairy cell leukemi...
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Background and Aims: Almost 350 million people worldwide are carriers of hepatitis B virus. The rate of chronic carriers in Iran is about 3%. Therefore Iran is categorized as a country with moderate rate of infection with this virus. In developing countries, transmission from mother to fetus and newborn is considered as one of the main routes of transmission. So, this study investigated t...
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Background/Aim: Hepatitis B surface antigen(HBsAg) is routinely detected qualitatively in Hepatitis B Virus(HBV) infection where its persistence beyond 6 months defines chronic hepatitis B(CHB) infection. Hepatitis B e antigen (HBeAg) usually indicates active HBV replication and risk of transmission of infection. In spite of the emerging use of chemiluminescence based quantitative HBsAg assays ...
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ژورنال
عنوان ژورنال: Hepatology
سال: 2012
ISSN: 0270-9139
DOI: 10.1002/hep.24718