中国30个地区HBV基因型分布特点和临床意义

目的了解中国乙型肝炎病毒感染者中HBV基因型的分布特点和临床意义。方法应用型特异性引物聚合酶链反应法,对中国30个省市自治区共2922份HBV感染者血清标本进行基因型检测,同时检测相关病毒学及肝功能生化指标,分析基因型分布特点及临床意义。结果2922例HBV感染者中,B、C、B／C、D基因型分别占15．9％、83．5％、0．41％、0．21％,未发现其他基因型。北方地区c基因型占绝大多数,南方地区浙江、江苏地区以c基因型为主,广东、湖南、湖北、江西以B基因型为主。B基因型较c基因型HBV感染者平均年龄小（P〈0．001）;C基因型HBV感染者HBeAg阳性率较B基因型高（P=0．023）;B基因型HBV感染者乙型肝炎病毒载量较c基因型高（P=0．038）;C基因型HBV感染者CHE、ALB较低,差异有统计学意义（P值分别为0．016）。结论中国HBV基因型以B、c基因型为主,仅少量的B／C和D基因型。北方地区以c基因型为主,南方地区c基因型明显减少,部分南方地区以B基因型为主。c基因型HBV感染者年龄较大、HBeAg阳性率高、HBVDNA载量低,病情较重。

Distribution and clinical significance of HBV genotypes in patients with HBV infection in 30 regions of China

Objective To explore the distribution and clinical significance of HBV genotypes in patients with HBV infection in China. Method Serum samples were collected from 2922 patients with HBV infection. HBV genotyping was performed with type-specific primers polymerase chain reaction, and the virological and biochemical markers were detected, which differences in the genotypes distribution between various regions and liver function and virological markers between various HBV genotyping were analyzed. Result The genotype B, C, B + C, D of 2922 patients with HBV infection accounted for 15.9% , 83.5% ,0. 41%, 0. 21% respectively. In Northern China, genotype C was most prevalent, accounting for 90% of all cases, while it was less common in Southern China; genotype C was present in Zhejiang and Jiangsu provinces, but genotype B was comparatively more common in Guangdong, Hunan, Hubei, and Jiangxi provinces. B, C genotype HBV infection patients in the sex difference was not statistically significant; B genntypes compared with C genotype HBV infection patients, the average age of is less ( P <0.001 ) ;HBeAg positive rate of C genotype HBV infection patients are higher than that of B genotype ( P = 0. 023 ) ;Viral load of genotype C HBV infection patients is higher than that of genotype B ( P =0. 038 ) ;.Cholinesterase and Albumin levels of genotype C HBV infection patients are lower than that of genotype B ( Pvalues were 0. 016, < 0. 001 ). Conclusion There were HBV genotype B, C, B + C and D in Chinese patients with HBV infection, with genotype B and C being the major ones. Mainly in northern regions of genotype C, C genotype significantly reduced the southern region, some of the southern region dominated by B genotype. Genotype C HBV infection patients are older, and their HBeAg-positive rate is higher, and their liver damage is more severe, but their viral load is less.