| | | CD14基因启动子多态性与冠心病的关系
| | 医学护理论文 作者:韦叶生,刘运广,唐任光,蓝景生 【关键词】 冠状动脉疾病 Association between CD14 gene promoter region polymorphisms and coronary heart disease 【Abstract】 AIM: To study the allele frequencies and genotype distribution of CD14 gene promoter region -159C/T, -260C/T polymorphisms in Chinese patients with coronary heart disease(CHD), and to analyze the association between the serum levels and genotypes of CD14 and CHD. METHODS: The polymorphisms of CD14 gene were analyzed by the polymerase chain reactionrestriction fragment length polymorphism (PCRRFLP) methods in 246 patients with CHD and 258 healthy controls, and the serum levels of CD14 were determined by enzymelinked immunosorbent assay (ELISA). RESULTS: The CHD group showed significantly higher serum levels of CD14 than control group (P<0.01); The distribution of CD14 gene -159C/T polymorphism was not different between CHD group and control group (P>0.05); but the CD14 gene -260C/T polymorphism was significantly different (P<0.05). The relative risk for CHD in T allele carriers was 1.417 times as high as that in C allele carriers (OR=1.417,95%CI:1.106-1.816), and the serum level of CD14 in T allele carriers was significantly higher than that in noncarriers (P<0.05). CONCLUSION: CD14 gene promoter region -260C/T polymorphism is associated with CHD; and T allele may be a risk factor for CHD; so T allele carriers have a higher risk for CHD by increasing the CD14 expression. 【Keywords】 coronary disease; CD14; gene polymorphism 【摘要】 目的医学护理论文: 研究白细胞分化抗原14(CD14)基因启动子159C/T,260C/T多态性各等位基因及基因型在冠心病患者中的医学护理论文分布频率,分析CD14基因型及血清CD14水平与冠心病的相关性. 方法: 采用聚合酶链反应限制性片段长度多态性(PCRRFLP)技术,检测246例冠心病患者及258名正常人对照组CD14的基因多态性,同时采用酶联免疫吸附试验(ELISA)检测血清CD14水平. 结果: 冠心病组血清CD14水平显著高于对照组(P<0.01),CD14基因159C/T多态性在冠心病组和正常人群中的分布差异无显著性(P>0.05),而CD14基因260C/T多态性在两组人群中的分布差异存在显著性(P<0.05),等位基因频率的相对风险分析发现,T等位基因携带者患冠心病的风险是C等位基因的1.417倍(OR=1.417,95%CI:1.106~1.816),携带T等位基因的冠心病患者血清CD14水平显著高于不携带者(P<0.05). 结论: CD14基因启动子260C/T多态性与冠心病的发病具有相关性,其中T等位基因可能是冠心病发病的遗传易感基因;携带T等位基因的个体可能通过促进CD14的高度表达进而增加了冠心病的发病风险. 【关键词】 冠状动脉疾病; CD14; 基因多态性 0引言 冠心病(coronary heart disease,CHD)是严重危害中、老年人生命健康的疾病. 其病因和发病机制尚未完全阐明,但细胞因子在其中的作用越来越受到重视. 白细胞分化抗原14 (cluster of differentiation antigen14,CD14) 是最近几年倍受关注的一种多功能炎症细胞因子,主要由成熟的单核巨噬细胞所产生,它在炎症、免疫反应及动脉粥样硬化形成中起着重要作用,并且与心血管疾病存在着密切关系[1]. 但CD14在冠心病中异常表达的分子遗传学机制尚不清楚. 本研究采用聚合酶链反应限制性片段长度多态性(PCRRFLP)和酶联免疫吸附试验(ELISA)的方法,拟探讨CD14基因多态性及血清水平与冠心病的关系,阐明基因型与表型之间的联系,为揭示冠心病的发病机制提供一定的理论依据.
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