TNF-α基因-308位点多态性与新疆维吾尔族、哈萨克族人群中支气管哮喘的关系

Relationship between tumor necrosis factor-αgene-308 promoter polymorphism and susceptibility to development of bronchial asthma in Uighur and Kazakh population in Xinjiang

目的探讨TNF-α基因-308位点多态性与新疆维吾尔族、哈萨克族人群中支气管哮喘(BA)的相关性。方法以新疆维吾尔族、哈萨克族人群中BA发病组和对照组均60例为研究对象,通过PCR产物直接测序法检测TNF-α基因-308位点的多态性分布,并统计分析TNF-α不同基因型与新疆维吾尔族、哈萨克族人群中BA的相关性。结果维吾尔族、哈萨克族的BA发病组和对照组中均以GG基因型为主,在两民族人群中GG、GA、AA三种基因型频率有统计学差异(P<0.05),等位基因G和A之间亦有统计学差异(P<0.05);调整年龄、性别等影响因素后,两组之间仍有统计学差异(P<0.05)。结论 TNF-α基因-308位点的多态性与新疆维吾尔族、哈萨克族BA的易感性相关,携带AA或GA基因型患者发病风险较高。

Objective To investigate the relationship between the polymorphism of the tumor necrosis factor-αgene-308 promoter and bronchial asthma （BA）in Uighur and Kazakh population in Xinjiang.Methods PCR product sequencing method was used to detect the polymorphism distribution of TNF-αgene in 60 BA patients and 60 controls among Xinjiang Uighur and Kazakh population.Then we analyzed the association between different TNF-αgenotypes and BA in Uighur and Kazakh population.Results The distribution of GG,GA and AA genotype was significantly different between the two groups.Statistical analysis showed that BA group had a significantly higher TNF-αA allele frequency than that of the control one （P 〈0.05）.After adjustment for sex and age,we found the A allele was a risk factor for BA pathogenesis （P 〈0.05）.Conclusion The polymorphism of TNF-α gene-308 may be associated with the susceptibility to BA in Xinjiang Uighur and Kazakh population,so TNF-α gene-308 may be considered as a genetic marker for early identification of individuals at high risk for BA,which may play an important role in preventing the development of BA in clinical practice.