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无偿献血者中隐匿性乙型肝炎病毒感染及表面抗原突变分析 被引量:35

Surveillance for Occult HBV Infection and HBsAg Variants in Blood Donors
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摘要 采用多种免疫学检测和核酸检测相结合的方法调查了我国南方某城市无偿献血者中隐匿性乙型肝炎病毒(HBV)感染的存在情况。结果在9023例乙肝表面抗原(HBsAg)阴性的无偿献血者中,共发现17例HBV DNA阳性,隐匿性HBV感染者的发生率为0.19%(95%CI:0.11~0.30%)。序列分析显示其中6例在HBsAg"a"表位(aa124~aa147)存在不同程度氨基酸突变,突变发生率为42.9%(6/14,有3例未扩增出"a"表位片段序列),G145R突变是该地区隐匿性HBV携带者中发生频率最高的突变(4/6,66.7%)。隐匿性HBV感染者中基因型C的比例(10/17)显著高于HBsAg阳性的HBV感染者(0/15,P<0.01)。 Occult hepatitis B virus (HBV) infection status of blood donors in a southern city in China was investigated by immunological assays and nucleic acid testing. Overall, 17 (0. 19%, 95%CI. 0. 11%-0.30%) of the 9023 HBsAg negative samples were found to be positive for the presence of HBV DNA. "A" epitope sequences were obtained from 14 among them. Mutation(s) in aa124-aa147 existed in 6 (42.9%, 6/14) samples and 4 (66.7%, 4/6)were G145R mutation. Ratio of genotype C in occult donors (10/17) was statistically higher than HBs-positive donors (0/15, P〈0.01), which implied that HBV genotype C leaded to occult infection more easily.
出处 《病毒学报》 CAS CSCD 北大核心 2009年第3期178-184,共7页 Chinese Journal of Virology
基金 福建省科技计划重点项目(闽科计[2008]59号) 厦门市科技计划项目(3502Z20074035) 国家高技术研究发展计划(863计划,课题号:2006AA02Z442)
关键词 乙型肝炎病毒 隐匿性感染 “a”表位 突变 基因型 Hepatitis B virus Occult infection "a" epitope mutantion Genotype
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参考文献17

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