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. 2009 Feb;94(2):632-8.
doi: 10.1210/jc.2008-0682. Epub 2008 Nov 11.

Genetics of variation in serum uric acid and cardiovascular risk factors in Mexican Americans

V Saroja Voruganti  1 , Subrata D Nath, Shelley A Cole, Farook Thameem, Jeremy B Jowett, Richard Bauer, Jean W MacCluer, John Blangero, Anthony G Comuzzie, Hanna E Abboud, Nedal H Arar
Affiliations

Genetics of variation in serum uric acid and cardiovascular risk factors in Mexican Americans

V Saroja Voruganti et al. J Clin Endocrinol Metab. 2009 Feb.

Abstract

Background: Elevated serum uric acid is associated with several cardiovascular disease (CVD) risk factors such as hypertension, inflammation, endothelial dysfunction, insulin resistance, dyslipidemia, and obesity. However, the role of uric acid as an independent risk factor for CVD is not yet clear.

Objective: The aim of the study was to localize quantitative trait loci regulating variation in serum uric acid and also establish the relationship between serum uric acid and other CVD risk factors in Mexican Americans (n = 848; men = 310, women = 538) participating in the San Antonio Family Heart Study.

Methods: Quantitative genetic analysis was conducted using variance components decomposition method, implemented in the software program SOLAR.

Results: Mean +/- SD of serum uric acid was 5.35 +/- 1.38 mg/dl. Univariate genetic analysis showed serum uric acid and other CVD risk markers to be significantly heritable (P < 0.005). Bivariate analysis showed significant correlation of serum uric acid with body mass index, waist circumference, waist/hip ratio, total body fat, plasma insulin, serum triglycerides, high-density lipoprotein cholesterol, C-reactive protein, and granulocyte macrophage-colony stimulating factor (P < 0.05). A genome-wide scan for detecting quantitative trait loci regulating serum uric acid variation showed a significant logarithm of odds (LOD) score of 4.72 (empirical LOD score = 4.62; P < 0.00001) on chromosome 3p26. One LOD support interval contains 25 genes, of which an interesting candidate gene is chemokine receptor 2.

Summary: There is a significant genetic component in the variation in serum uric acid and evidence of pleiotropy between serum uric acid and other cardiovascular risk factors.

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Figures

Figure 1
Figure 1
Summary of the univariate linkage analysis for serum uric acid by each chromosome. Chromosomal location (cM) is represented on the x-axis, and the LOD score shown on the y-axis.
Figure 2
Figure 2
Plot of chromosome 3 depicting the overlap between the present study and our previous study. Chromosomal location (cM) is represented on the x-axis, and the LOD score shown on the y-axis.
See this image and copyright information in PMC

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