趋化因子受体CX3CR1的基因多态性与冠状动脉粥样硬化的相关性研究

[目的]发现炎症内皮释放的一种新的趋化因子Fkn与其受体CX3CR1结合后,可导致血管内皮细胞损伤,并使表达该受体的单核细胞、淋巴细胞等产生方向性迁移信号,向血管内皮细胞趋化、黏附,并能穿过血管向血管外特定部位迁移,从而促进冠状动脉粥样硬化的形成.本实验探讨CX3CR1基因多态性和经过冠状动脉造影确诊为冠心病患者之间的关系,以分析CX3CR1基因多态性是否对冠心病的发病有影响.[方法]应用聚合酶链反应一限制性片段长度多态性(PCR-RFLP)技术分别对108例冠心病患者和80例健康者的CX3CR1基因进行多态性检测,分别计算冠心病组和健康对照组的3种基因型频率.[结果]CX3CR1的1249等位基因的基因频率在冠心病组和健康对照组上有显著差别;M280等位基因和1249等位基因的频率结合起来,得出调整后的OR值分别是0.49和0.43.[结论]CX3CR1的1249等位基因在冠心病组和健康对照组的基因频率上差别有显著性意义;M280、I249等位基因和冠心病发生的减少有关;其中等位基因I249起执行和保护的作用,能显著减少冠心病的发病率.

Association between polymorphism in chemokine receptor CX3CR1 and coronary atherosclerosis

[Objective] We further test the hypothesis by analyzing the association of CX3CR1 polymorphism with angiographically defined atherosclerosis.[Methods] Genotyping of the CX3CR1-I249 polymorphism was performed in a cohort of 188 yellow individuals who undergone cardiaccatheterization(n=108 with and n=80 without cardiac artery disease,respectively).[Results] The frequencies of the I249 and M280 polymorphisms showed no deviation from Hardy-Weinberg equilibrium.However,a statistically significant difference in g...