人类白细胞抗原等位基因与HBV宫内感染关系

目的研究人类白细胞抗原（HLA）-DR3、DR7、DR13、DR53等位基因与乙型肝炎病毒（Hepatitis Bvirus，HBV）宫内感染的关系，探讨FIBV宫内感染的遗传易感性，确定HBV富内感染的易感基因和保护基因。方法采用聚合酶链反应／序列特异性引物（PCR—SSP）技术检测HBsAg阳性孕妇及其新生儿各187例外周静脉血血块中HLA—DR3、DR7、DR13、DR53等位基因型分布及频率。结果（1）宫内感染组孕妇HLA—DR3基因频率为24．14％（7／29），显著高于非宫内感染组孕妇的6．33％（10／158）（P=0．007）。其余各表型比较，差异无统计学意义（P〉0．05）。（2）宫内感染组新生儿HLA—DR3基因频率为17．24％（5／29）。显著高于非宫内感染组新生儿的5．06％（8／158）（P=0．033）。其余各表型比较，差异无统计学意义（P〉0．05）。（3）母婴HLA—DR3同阳性在宫内感染组与宫内未感染组间比较差异有统计学意义（P=0．049）；母婴HLA-DR7、DR13、DR53同阳性在宫内感染组与宫内未感染组间比较。差异无统计学意义（P〉0．05）。结论HBsAg阳性孕妇及其胎儿同时或任一携带HLA—DR3，易导致HBV宫内感染；HLA—DR3是HBV宫内感染的易感基因。

Association between HLA - DR alleles and HBV intrauterine infection

Objective To study the association between HLA-DR3,DR7,DR13,DR53 and HBV intrauterine infection to probe into the susceptibility to intrauterine infection of hepatitis B virus and to find its predisposing genes and protecting genes.Methods HLA-DR3,DR7,DR13,DR53 were detected by the technique of polymerase chain reaction-sequence specific primers(PCR-SSP) in maternal and neonatal blood clot.Results(1) The frequency of HLA-DR was 24.14% in women with intrauterine infection,which was higher than that(6.33%) in women without intrauterine infection(P=(0.007)).There was no association between HLA-DR7,DR13,DR53 positive in pregnant women and HBV intrauterine infection(P>0.05).(2) The frequeney of HLA-R of newborns was 17.24% in women with intrauterine infection,which is higher that(5.06%) in women withotll infection(P=0.033).There was no association between HLA-DR7,DR13,DR53 positive in newborns and HBV intrauterine infection(P>0.05).(3)There was significant association between HLA-DR3 concordance and HBVintrauterine infection(P=0.049).There was no association between DR7,DR13,DR53 concordance and HBV intrauterine infection(P>0.05).Conclusion HLA-DR3 carriers of pregnant women and their newborns have susceptibility to HBV intrauterine infection.HLA-DR3 is the predisposing gene of HBV intrauterine infection.