克什米尔族人群中载脂蛋白E基因多态性及其与冠状动脉疾病的关系。

ApoE gene polymorphism and its relationship with coronary artery disease in ethnic Kashmiri population.

作者信息

Afroze Dil, Yousuf Adfar, Tramboo Nisar A, Shah Zaffar A, Ahmad Asrar

机构信息

Department of Immunology and Molecular Medicine, Sher-I- Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India.

Department of Cardiology, Sher-I- Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India.

出版信息

Clin Exp Med. 2016 Nov;16(4):551-556. doi: 10.1007/s10238-015-0389-7. Epub 2015 Sep 26.

Abstract

Apolipoprotein E is a fundamental component of various lipoproteins and plays substantial role in cholesterol/lipid transport among cells of various tissues. The ApoE gene is polymorphic with three alleles ε2, ε3, and ε4, coding for isoforms E2, E3, and E4 having different binding inclination for corresponding receptors. This work aimed to investigate the association between ApoE gene polymorphism and coronary artery disease (CAD) in Kashmiri population. APOE genotyping was done by polymerase chain reaction-restriction fragment length polymorphism. Our study indicated ApoE ε3/ε3 to be the most common genotype in both CAD and control group. The frequency of ε2, ε3, and ε4 alleles of ApoE gene in cases was observed to be 0.06, 0.72, and 0.20, while in control subjects it was 0.075, 0.82, and 0.11, respectively. A significant difference was found between cases and controls with respect to TC, LDL, and HDL levels. Our data showed that frequency of ε4/ε4, ε4/ε3 genotype and ε4 allele was significantly higher in cases than in controls (p = 0.02, p = 0.004, p < 0.001 respectively). Moreover, the CAD patients carrying ε4 allele had significantly higher TC and LDL levels (p value <0.01). Thus our data showed a significant association of ApoE ε4 allele with the risk of CAD. The data revealed that ApoE ε4 allele is associated with increased risk of CAD and increased levels LDL and TC in Kashmiri population.

摘要

载脂蛋白E是各种脂蛋白的基本组成部分,在各种组织细胞间的胆固醇/脂质转运中发挥着重要作用。载脂蛋白E基因具有多态性,有ε2、ε3和ε4三个等位基因,分别编码对相应受体具有不同结合倾向的异构体E2、E3和E4。本研究旨在探讨克什米尔人群中载脂蛋白E基因多态性与冠状动脉疾病(CAD)之间的关联。采用聚合酶链反应-限制性片段长度多态性方法进行载脂蛋白E基因分型。我们的研究表明,载脂蛋白E ε3/ε3是CAD组和对照组中最常见的基因型。在病例组中,载脂蛋白E基因的ε2、ε3和ε4等位基因频率分别为0.06、0.72和0.20,而在对照组中分别为0.075、0.82和0.11。病例组和对照组在总胆固醇(TC)、低密度脂蛋白(LDL)和高密度脂蛋白(HDL)水平上存在显著差异。我们的数据显示,病例组中ε4/ε4、ε4/ε3基因型和ε4等位基因的频率显著高于对照组(p值分别为0.02、0.004、p<0.001)。此外,携带ε4等位基因的CAD患者的TC和LDL水平显著更高(p值<0.01)。因此,我们的数据显示载脂蛋白E ε4等位基因与CAD风险之间存在显著关联。数据表明,在克什米尔人群中,载脂蛋白E ε4等位基因与CAD风险增加以及LDL和TC水平升高有关。

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