HBsAg Mutants Clustered Mainly Outside of “a” Determinant in Chronic Carriers From Azarbayjan Province, Iran

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hbsag mutants clustered mainly outside of “a” determinant in chronic carriers from azarbayjan province, iran

conclusions the distribution of amino acid mutations as well as the ratio between missense and silent nucleotide mutations (dn/ds) showed that a narrowly focused immune pressure had already been on the surface protein (especially ctl epitopes) which led to the emergence of escape mutants in these patients who were in tolerance phase of chronicity. materials and methods the surface genes from 17...

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Hepatitis B virus surface antigen (HBsAg) mutations are rare but clustered in immune epitopes in chronic carriers from Sistan-Balouchestan Province, Iran.

BACKGROUND Hepatitis B virus (HBV) gene and protein variations have frequently been observed in chronic patients. The aims of this study were to determine the genotypes as well as the patterns of HBsAg variations in chronically-infected patients from the south-eastern part of Iran. METHODS Twenty- one chronic inactive HBV carriers from Sistan-Balouchestan Province (an area with a low prevalen...

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Identification of Hepatitis B Virus Surface Antigen (HBsAg) Genotypes and Variations in Chronic Carriers from Isfahan Province, Iran

BACKGROUND Hepatitis B virus (HBV) gene and protein variations are frequently been seen in chronic patients. The aims of study were to determine the genotypes as well as the patterns of variations distribution in chronically-infected patients from the central part of Iran. METHODS The surface gene was amplified, sequenced and subsequently aligned using international and national Iranian datab...

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Hepatitis B virus Genotypes in West Azarbayjan Province, Northwest Iran

BACKGROUND Infections caused by Hepatitis B are one of the world health's most serious problems. According to assessments, nearly 500,000 to 1.2 million people die each year due to chronic hepatitis, cirrhosis of the liver and hepatocellular carcinoma. Hepatitis B is one of the diseases which can be transferred through blood and its products. Clinical importance of genotypes of hepatitis B viru...

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Incidence of Hepatitis B virus Surface Antigen (HBsAg) Mutations in Naïve Treated of Chronic Carriers from Tehran Metropolis, Iran

Abstract Background: Naturally occurred hepatitis B virus (HBV) with surface mutations in a variety of chronic hepatitis B (CHB) patients who have received no vaccine or HBIG bearing substitutions in surface protein, have been reported. Objectives: Current knowledge concerning the prevalence of these naturally occurring surface antigen mutations among Iranian carriers is limited. Patients and M...

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ژورنال

عنوان ژورنال: Jundishapur Journal of Microbiology

سال: 2013

ISSN: 2008-3645,2008-4161

DOI: 10.5812/jjm.6570