کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3343753 1591185 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mutations in the S gene and in the overlapping reverse transcriptase region in chronic hepatitis B Chinese patients with coexistence of HBsAg and anti-HBs
ترجمه فارسی عنوان
جهش در ژن S و در منطقه همپوشان معکوس transcriptase در بیماران چینی مبتلا به هپاتیت B مزمن با همزیستی HBsAg و ضد HBs
کلمات کلیدی
هپاتیت مزمن B؛ همزیستی HBsAg و ضد HBs؛ ژن S؛ ترانس کریپتاز معکوس
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی و میکروب شناسی (عمومی)
چکیده انگلیسی

BackgroundThe mechanism underlying the coexistence of hepatitis B surface antigen and antibodies to HBsAg in chronic hepatitis B patients remains unknown.AimsThis research aimed to determine the clinical and virological features of the rare pattern.MethodsA total of 32 chronic hepatitis B patients infected by HBV genotype C were included: 15 carrying both HBsAg and anti-HBs (group I) and 17 solely positive for HBsAg (group II). S gene and reverse transcriptase region sequences were amplified, sequenced and compared with the reference sequences.ResultsThe amino acid variability within major hydrophilic region, especially the “a” determinant region, and within reverse transcriptase for regions overlapping the major hydrophilic region in group I is significantly higher than those in group II. Mutation sI126S/T within the “a” determinant was the most frequent change, and only patients from group I had the sQ129R, sG130N, sF134I, sG145R amino acid changes, which are known to alter immunogenicity.ConclusionsIn chronic patients, the concurrent HBsAg/anti-HBs serological profile is associated with an increased aa variability in several key areas of HBV genome. Additional research on these genetic mutants are needed to clarify their biological significance for viral persistence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Brazilian Journal of Infectious Diseases - Volume 20, Issue 1, January–February 2016, Pages 1–7
نویسندگان
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