HLA-DRB1及HLA-DQA1单倍型与乙型肝炎病毒感染结局的关联研究

目的探讨中国北方汉族人群HLA-DRB1、DQA1单倍型与乙型肝炎病毒（hepatitis B virus，HBV）感染不同结局的关系。方法采用序列特异性引物聚合酶链反应（sequence specific primers polymerase chain reaction，PCR-SSP）技术检测HLA-DRB1、DQA1等位基因，并比较207例慢性乙型肝炎患者，212名无症状HBV慢性携带者（HBV携带者），148例自限性HBV感染者的单倍型频率。结果自限性HBV感染组单倍型DRB1＊04-DQA1＊0301的频率为10．03％，显著高于慢性乙肝组的3．66％（P=0．0005）：DRB1＊15／＊16-DQA1＊0102的频率为6．80％，显著高于慢性乙肝组的1．94％（P=0．0012）和无症状HBV慢性携带者组的1．65％（P=0．004）；DRB1＊04-DQA1＊0302单倍型在慢性乙型肝炎组的频率为3．10％，明显高于自限性HBV感染组的0．39％（P=0．0077）。结论HLA-DRB1、DQA1单倍型与个体感染HBV后的不同结局存在显著关联。

Association of haplotype formed on HIA-DRB1 and HLA-DQA1 alleles with outcomes of hepatitis B virus infection

Objective To assess the association of haplotype of HLA-DRB1 and HLA-DQA1 alleles with outcomes of hepatitis B virus infection in Han population of north China. Methods Two hundred and seven chronic hepatitis B (HB) patients, two hundred and twelve chronic asymptomatic hepatitis B virus (HBV) carriers (HBV carrier) and one hundred and forty-eight self-limited HBV infection were investigated for HLA-DRB1 and HLA-DQA1 alleles by sequence specific-polymerase chain reaction (PCR-SSP). Results The frequency of DRB1*04-DQA1*0301 haplotype was 10.03% in self-limited HBV infection subjects, significantly higher than that in chronic HB patients (3.66%) (P= 0.0005);the frequency of DRB1*15/*16-DQA1*0102 haplotype was 6.80% in self-limited HBV infection subjects, significantly higher than 1.94% in chronic HB patients (P=0.0012) and 1.65% in asymptomatic HBV carriers (P=0.0004);while the frequency of DRB1*04-DQA1*0302 haplotype was 3.10% in chronic HB patients, higher than that in self-limited HBV infection subjects (0.39%) (P=0.0077). Conclusion Individuals with different haplotypes composed of HLA-DRB1 and HLA-DQA1 might have different outcomes of HBV infection.