福州地區(qū)獻血者人群隱匿性乙型肝炎病毒感染及其基因型與S區(qū)突變的研究
[Abstract]:Objective to investigate the (OBI) status of occult hepatitis B virus infection and the distribution of HBV genotypes and the amino acid mutation in S region of non-remunerated blood donors in Fuzhou area. Methods routine HBs Ag screening and HBV DNA detection were performed in 102 866 (human) blood donors from November 2011 to March 2013 in Fuzhou, Fujian Province, by serological method and nucleic acid detection technique (NAT),). The negative samples of HBV serological marker hepatitis B were excluded and HBs Ag-HBV DNA was confirmed as OBI. Real time fluorescence quantitative PCR was used to detect HBV DNA in OBI samples. Nested PCR amplification and sequencing were used to amplify S-region genes. HBV genotyping and S-region amino acid mutation were analyzed by MEGA5.0 software. Results from November 2011 to March 2013, 75 cases of HBs Ag-HBV DNA were screened out from free blood donors in Fuzhou area. The OBI rate was 0.064% (66 / 102,866). The positive rate of anti HBc was 93.94% (62 / 66), HBV DNA) in 66 OBI samples (18.18%) (12 / 66), HBV DNA was (13-302) IU/m L). The S region gene sequence was amplified from 15.15% (10 / 66) of OBI samples, including 7 cases of type B and 3 cases of type C. Mutation analysis revealed that 7 of the 10 cases had mutations in the S region of HBV, and 6 of them had mutations in the HBs Ag antigen determinant gene and (MHR) in the peripheral main hydrophilic region. Conclusion there is a certain OBI infection rate in the free blood donors in Fuzhou area, in which the proportion of anti-HBc positive is the majority, and the viral load of OBI infection is low. The amino acid mutation in, HBV S region, especially in MHR, may be one of the main causes of OBI in HBV genotype.
【作者單位】: 福建省血液中心;福建醫(yī)科大學基礎醫(yī)學院;
【基金】:福建省衛(wèi)生廳青年科研課題(2012-1-13)
【分類號】:R446.1;R512.62
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