目的探讨不同患者乙型肝炎病毒(hepatitis B virus,HBV)基因变异率情况及影响因素。方法选取4组慢性HBV感染者家系共6对母子为研究对象,PCR扩增HBV全长序列,分析其基因变异率并探讨其与疾病进程的相关性。结果 6对母子均为B基因型HBV感染,不同患者间HBV核苷酸变异率分别为6.67×10-5、2.83×10-5、2.33×10-5、1.48×10-4、1.83×10-4、1.24×10-4个变异/位点/年,差异可高达7.85倍,其中家系内HBV变异率差异分别为2.36和6.35倍。免疫耐受期HBV基因变异率2.83×10-5和1.24×10-4个变异/位点/年,非免疫耐受期HBV基因变异率2.33×10-5~1.83×10-4个变异/位点/年。各编码区变异率亦有所差异,但差异均无统计学意义(2核苷酸=2.812,P=0.422;2氨基酸=2.344,P=0.504)。结论不同患者HBV基因变异率有较大差异,且可能与患者所处HBV感染自然病程有关。
【英文摘要】
Objective To study the nucleotide substitution rate of full-length hepatitis B virus( HBV) in patients who were infected with HBV and its influential factors. Methods Six pairs of mother-child patients with chronic HBV infection were included as the study subjects. Full-length HBV was amplified by PCR from sera samples and the nucleotide substitution rate their correlation with disease processes were analyzed. Results Six pairs of mother-child patients were all HBV B genotype. The nucleotide substitution ra...
【基金】
国家自然科学基金(81273142)
【更新日期】
2016-09-07
【分类号】
R512.62
【正文快照】
(Chin J Dis Control Prev 2016,20(8):835-838)慢性乙型肝炎是威胁全球人民健康的主要公共卫生问题之一。我国大陆地区约有0.93亿慢性乙型肝炎病毒(hepatitis B virus,HBV)感染者,约占全世界HBV感染者的1/3[1]。HBV属于DNA病毒,但由于存在逆转录过程,且HBV-DNA聚合酶缺乏校正?