白介素-10-627基因多态性和儿童哮喘的相关性研究
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摘要
目的 细胞因子在哮喘发病机制中有很重要的作用,近年来人们发现某些细胞因子的遗传多态性与哮喘的发病存在一定的相关性。IL—10有广泛的免疫抑制和抗炎作用,是哮喘发病中的一种抗炎因子,其参与哮喘的发病机制基本得到肯定,但对于哮喘儿童,IL—10与遗传因素的作用目前还不清楚。 通过研究白介素—10(IL-10)基因—627位点多态性与儿童哮喘的相关性,探讨哮喘儿童的易感性。方法 选择中国昆明地区的汉族儿童为研究对象。实验对象分两组,病例组为50例确诊的支气管哮喘患儿,诊断标准采用《诸福堂实用儿科学》(第七版):对照组为36名健康体检儿童。采用限制性内切酶Rsa Ⅰ,通过聚合酶链反应—限制性片段长度多态性(PCR—RFLP)分析、基因测序等技术测定IL-10—627位点多态性,比较两组儿童该位点的基因型和等位基因突变频率。数据用SPSS12.0计算机统计软件进行x~2检验。结果 哮喘组三种基因型CC、CA、从分别为12.0%、48.0%、40.0%;健康组三种基因型CC、CA、AA分别为8.3%、50.0%、41.7%。两组基因型分布频率差异无显著性(P>0.05)。哮喘组C和A的等位基因分布频率分别为36.0%、64.0%;健康组C和A的等位基因分布频率分别为31.9%、68.1%。两组等位基因分布频率差异无显著性(P>0.05)。基因测序证实IL-10—627 C→A是突变位点。结论 本次研究结果发现IL-10基因—627位点的基因型和等位基因在哮喘组与对照组间无差异,表明IL-10基因-627位点多态性可能与哮喘儿童易感性无关,可能与环境因素、种族等有关。
Objective Cytokines play a part role in the pathogenesis of asthma and recent studies found there are some associations between the pathogenesis of asthma and polymorphisms of several cytokines. Interleukin-10 is an antiinflammatory cytokine in asthma that plays a role in both immunoinhibition and antiinflammation. But the association between the polymorphism of IL-10 gene and hereditary susceptibility in children with asthma is unknown. In order to explore the hereditary susceptibility of children with asthma, we detect the association between the single nucleotide polymorphism (SNP) of IL-10 and childhood asthma to investigate susceptibility in children with asthma. Methods Subjects of Han ethnic were selected from Kunming City in China. The study was conducted in two different groups. 50 asthmatic children were
引文
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