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Journal of Preventive Medicine ; (12): 544-547, 2014.
Artigo em Chinês | WPRIM | ID: wpr-792303

RESUMO

Objective To analyze hepatitis B virus( HBV)genotype and the correlation between variation of P gene region and genotyping of Lamivudine-resistant HBV,in order to provide molecular virology basis for anti-virus individualized treatment to different HBV genotypes. Methods Serum markers and HBV DNA of 187 Lamivudine -resistant chronic HBV patients were detected by ELISA and fluorescent quantitative polymerase chain reaction. Moreover,DNA Star and viral genotyping tool were used. Results Of the 187 cases infected with HBV genotype B and C,51 cases were B gene (27. 27%),134 cases were C gene(71. 66%),and 2 cases were mixed infections(1. 07%). HBeAg levels were significantly different between genotype B and C(P<0. 05). P gene mutation results showed that genotype B dominated by YMDD mutation alone and genotype C dominated by YMDD and rtL180M mutation. Conclusion The main HBV genotype of this study is genotype C,and different genotypes may determine the variation patterns of P region which associated with resistance.

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