華東地區(qū)獻(xiàn)血者人群隱匿性乙型肝炎病毒感染及S區(qū)變異分析
[Abstract]:Objective to investigate the occult hepatitis B virus (OBI) infection in blood donors from three blood centers in Anhui, Fujian and Jiangxi, and to explore the characteristics of HBV genotyping and amino acid variation in S region. Methods from January 2013 to May 2014, from June 2013 to November 2013, from March 2014 to December 2014, from June 2013 to May 2014, from March 2014 to December 2014, from June 2013 to September 2013, hepatitis B surface antigen enzyme linked immunosorbent assay (Elisa) was used to detect hepatitis B surface antigen. HBs Ag-, DNA HBV positive (NAT) samples from 102 volunteer blood donors were tested for anti-HBc. At the same time, nested PCR method was used to amplify and sequence the S region of HBV. HBV genotyping and amino acid mutation analysis of S region were carried out by MEGA 6 software. Results the infection rate of Obi was 0.017% (21 / 123,046) in the 123046 volunteer blood donors from Anhui Blood Center, of which 76.2% (16 / 21) were positive for anti-HBc. In 15 of the 21 samples, 8 cases of B type C were amplified from HBV S region. There were 51 (76.5%) (39 / 51) anti-HBc positive samples from HBs Ag-NAT donors in Fujian blood center, of which 16 cases were amplified from HBV S region in 14 cases with type B and 2 cases with type C, and 30 cases (80%) (24 / 30) of HBs Ag-NAT blood donors from Jiangxi Blood Center were anti-HBc positive, the positive rate of anti-HBc was 80% (24 / 30). The amino acid replacement mutation in MHR region of HBV S gene was found in 74.3% (26 / 35) of 4 cases of OBI samples with HBV S region amplified from 3 cases of type B type C and 35 cases of type C amplification products, mainly concentrated in the "偽" determinant region of hepatitis B virus. Conclusion the infection rate of OBI was 0.017 in free blood donors in Anhui, and there were some OBI infections in Fujian and Jiangxi, and the positive rate of anti-HBc was 73.3% in Anhui province, 93.8% in Fujian province, and 100% in Jiangxi province. The positive rate of anti-HBc was 73.3% in Anhui, 93.8% in Fujian province, and HBV% in Jiangxi province. In particular, the substitution mutation of HBs Ag "偽" determinant region may be one of the reasons for the formation of OBI.
【作者單位】: 安徽省血液中心;安徽醫(yī)科大學(xué)第四附屬醫(yī)院;福建省血液中心;江西省血液中心;
【分類號(hào)】:R193.3;R512.62
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