IL—28B单核苷酸基因多态性与CHB干扰素疗效的相关性
2014-09-26丁慧俊
丁慧俊
[摘要] 目的 探讨IL-28B单核苷酸基因多态性与慢性乙型肝炎(CHB)干扰素疗效的相关性。 方法 选取300例HBeAg阳性CHB患者,给予聚乙二醇化干扰素α(Peg-INF-α)规范治疗48周后以PCR法对IL-28B SNP rs12979860及IL-28B SNP rs8099917基因分型进行检测。 结果 治疗后HBV DNA定量、ALT、AST水平明显较治疗前下降(P<0.05),HBeAg转移率53.13%,随访1年后应答率49.44%;Peg-INF-α应答患者与非应答患者IL-28B SNP rs12979860基因型CC、CT、TT分布及等位基因C、T频率比较差异无统计学意义(P>0.05),IL-28B SNP rs8099917基因型TT、TG分布及等位基因T、G频率比较差异具有统计学意义(P<0.05)。 结论 IL-28B SNP rs8099917可能对干扰素治疗的应答反应性形成影响,其中等位基因G的频率升高可能提示着干扰素的成功应答,因而检测IL-28B SNP rs8099917对干扰素治疗的CHB患者治疗疗效有一定预测价值。
[关键词] IL-28B;单核苷酸基因多态性;慢性乙型肝炎;干扰素
[中图分类号] R512.62 [文献标识码] A [文章编号] 2095-0616(2014)17-09-03
[Abstract] Objective To explore the correlation between IL-28B single nucleotide polymorphism and effectiveness of interferon in chronic hepatitis B (CHB). Methods 300 cases of HBeAg positive patients with CHB were selected, and given pegylated interferon alpha (Peg-INF-a) standard treatment. The IL-28B SNP rs12979860 and IL-28B SNP rs8099917 genotyping were tested with PCR method after treatment of 48 weeks. Results HBV DNA quantification, ALT and AST levels after treatment decreased significantly compared with before treatment (P<0.05), HBeAg metastasis rate was 53.13%, response rate after a year of follow-up was 49.44%; the differences were no statistical significant in genotype CC, CT, TT distribution of IL-28B SNP rs12979860 and C, T frequency of allele between Peg-INF-a responder patients and non Peg-INF-a responder patients (P>0.05), the differences were statistical significant in genotype TT, TG distribution of IL-28B SNP rs8099917 and T, G frequency of allele (P<0.05). Conclusion IL-28B SNP rs8099917 may impact the formation of response to interferon treatment, including increased frequency of allele G could prompt the success of the interferon response, thus detecting IL-28B SNP rs8099917 to effectiveness of interferon treatment in CHB patients has certain predictive value.
[Key words] IL-28B; Single nucleotide genetic polymorphisms; Chronic hepatitis B; Interferon
研究发现白细胞介素-28B(IL-28B)的基因变异与丙型肝炎病毒患者采用干扰素治疗的应答反应性关系极为密切[1-7],基于以上研究,笔者对干扰素治疗的CHB患者IL-28B单核甘酸基因多态性进行了研究,旨在探讨IL-28B单核苷酸基因多态性与CHB干扰素疗效的相关性。
1 对象与方法
1.1 研究对象
选取2011年1~8月期间在我院接诊的HBeAg
阳性CHB患者300例为研究对象。入选患者中男184例,女116例,平均年龄(28.6±5.5)岁,HBV DNA定量平均为(6.96±1.31)lg copies/mL,丙氨酸氨基转移酶(ALT)为(210.83±120.15)U/mL,天门冬氨酸氨基转移酶(AST)为(130.22±74.59)U/mL。
1.2 方法
1.2.1 聚乙二醇化干扰素α(Peg-INF-α)治疗方法 给予Peg-INF-α(上海罗氏制药有限公司,J20120075)皮下注射治疗,每次180μg,1次/周,连续治疗48周,对患者使用Peg-INF-α治疗的应答反应进行评估,应答定义为治疗期间患者血清HBV定量下降检测线以下,HBeAg转阴,并且随访1年病情无复发。endprint
1.2.2 IL-28B单核苷酸基因多态性检测方法 在治疗48周后抽取患者全血标本,置入有抗凝剂的试管内,检测全血DNA,以PCR法对IL-28B SNP rs12979860及IL-28B SNP rs8099917基因分型进行检测,反应操作步骤严格按照说明书进行操作。
1.3 统计学方法
数据采用SPSS17.0统计学软件进行分析,计数资料采用x2检验,计量……
