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不同基因型的乙型肝炎病毒基因变异状况分析 被引量:1

Analysis of hepatitis B virus gene mutations with different genotypes
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摘要 目的研究不同的HBV基因型前C区的第1896位、基本核心启动子(BCP)区第1762位和第1764位双变异的规律及其与临床的关系。方法分别用基因芯片和基因测序的方法检验HBV—DNA阳性的乙型肝炎病毒携带者(ASC)26例、慢性乙型肝炎(CHB)186例、肝硬化(HLC)69例、肝细胞癌(HCC)26例、重型肝炎(FHF)34例的基因型和部分点突变,并比较基因型与基因变异、临床类型与基因变异的关系。结果各临床型间第1762位和第1764位双变异差异显著,ASC组与CHB组、HLC组、HCC组和FHF组相比较,X^2分别为10.8985、42.4086、14.0159、21.7324,P分别为0.0010、0.0000、0.0002和0,0000;基因型B与C型的第1762位、第1764位双突变相比,X^2=48.1395,P=0.0000。结论基因型的存在决定了HBV的某些其他基因变异的方向和频率,从而也决定了因此而造成的肝损伤的程度。 Objective To study the association of hepatitis B virus (HBV) pre core nt. 1 896, basic core promoter (BCP) nt. 1 762 and 1 764 mutations with the genotypes and the liver diseases. Methods The HBV genotypes and some point-mutations of the patients with HBV DNA+ including 26 cases of asymptomatic carriers (ASC), 186 cases of chronic hepatitis B (CHB), 69 cases of liver cirrhosis (HLC), 26 cases of hepatocellular carcinoma (HCC) and 34 cases of fulminant hepatic failure (FHF), were determined by sequence analysis and gene chip. Then, the relationships between geno- types as well as clinical entities and gene mutations were analyzed. Results There were significant differences of BCP 1 762 and 1 764 double mutations among different clinical types. The X^2 value (P value) was 10. 898 5(0. 001 0) ,42. 408 6(0. 000 0) ,14. 015 9(0. 000 2) and 21. 732 4 (0. 000 0) in CHB group, HLC group, HCC group and FHF group respectively. Z2 value (P value) was 48. 139 5 (0. 000 0) for BCP 1 762 and 1 764 double mutations between genotype B and C. Conclusion The existence of HBV genotypes decides the direction and frequency of HBV gene mutations, and thus decides the severity of liver damage.
出处 《国际检验医学杂志》 CAS 2007年第12期1061-1063,共3页 International Journal of Laboratory Medicine
关键词 肝炎病毒 乙型 基因型 突变(遗传学) Hepatitis B virus Genotype Mutation(genetics)
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