CELSR2-PSRC1-SORT1 gene expression and association with coronary artery disease and plasma lipid levels in an Asian Indian cohort.

Abstract:

BACKGROUND:Genetic regulation of plasma lipids has been shown to influence the risk of coronary artery disease (CAD). We analyzed the relationship between rs599839 and rs646776 single nucleotide polymorphisms (SNPs) present in the CELSR2-PSRC1-SORT1 gene cluster, candidate gene expression, and their association with CAD and circulating lipid levels in a representative cohort of Asian Indians selected from the Indian Atherosclerosis Research Study. METHODS:SNPs rs599839 and rs646776 were genotyped by Taqman assay in 1034 CAD patients (cases) and 1034 age- and gender-matched controls. Expression of CELSR2, PSRC1, and SORT1 genes was measured in 100 cases and 100 controls. Plasma levels of total cholesterol (TC), triglycerides, high-density lipoprotein-cholesterol, and low-density lipoprotein-cholesterol (LDL-c) were measured by enzymatic assay. RESULTS:Both rs646776 and rs599839 were in strong linkage disequilibrium (r = 0.98) and showed significant protective association with CAD (OR = 0.315, 95% CI 0.136-0.728, p<0.007 and OR = 0.422, 95% CI 0.181-0.981, p = 0.045, respectively). Haplotype TA showed 72% frequency and was associated with CAD (OR 0.77, 95% CI 0.67-0.88, p = 0.0002). PSRC1 gene expression was lower in the cases than in the controls (0.75 ± 0.405 versus 1.04 ± 0.622, p = 2.26 × 10(-4)). The homozygous variant and heterozygous genotypes showed 30% and 15% higher PSRC1 expression, respectively. Correspondingly, the minor alleles were associated with lower plasma TC and LDL-c levels. CONCLUSION:PSRC1 in the cholesterol gene cluster shows a significant association with CAD by virtue of the two SNPs, rs646776 and rs599839 that also regulate plasma cholesterol levels.

journal_name

J Cardiol

journal_title

Journal of cardiology

authors

Arvind P,Nair J,Jambunathan S,Kakkar VV,Shanker J

doi

10.1016/j.jjcc.2014.02.012

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

339-46

issue

5

eissn

0914-5087

issn

1876-4738

pii

S0914-5087(14)00067-7

journal_volume

64

pub_type

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