alexa Common Sequence Variants in CD163 Gene are Associated with Plasma Triglyceride and Total Cholesterol Levels in Severely Obese Individuals
ISSN: 2161-1017

Endocrinology & Metabolic Syndrome
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Research Article

Common Sequence Variants in CD163 Gene are Associated with Plasma Triglyceride and Total Cholesterol Levels in Severely Obese Individuals

Guénard F1,2,3, Cormier M1, Tchernof A2,3,4, Deshaies Y4,5, Biron S6, Lescelleur O6, Biertho L6, Marceau S6, Pérusse L1,7 and Vohl MC1,2,3*

1Institute of Nutrition and Functional Foods (INAF), Québec, Québec, Canada

2Department of Food Science and Nutrition, Laval University, Québec, Québec, Canada

3Endocrinology and Nephrology, CHU de Québec Research Center, Québec, Québec, Canada

4Québec Heart and Lung Institute, Québec, Québec, Canada

5Department of Medicine, Laval University, Québec, Québec, Canada

6Department of Surgery, Laval University, Québec, Québec, Canada

7Department of Kinesiology, Laval University, Québec, Québec, Canada

*Corresponding Author:
Marie-Claude Vohl
Ph.D., Institute of Nutrition and Functional Foods (INAF)
Pavillon des Services, 2440 Hochelaga Blvd
Laval University, Québec, Québec, Canada
Tel: 418 656-2131; Ext. 4676
Fax: 418 656-5877
E-mail: [email protected]

Received Date: October 21, 2014; Accepted Date: November 24, 2014; Published Date: November 27, 2014

Citation: Guénard F, Cormier M, Tchernof A, Deshaies Y, Biron S, et al. (2014) Common Sequence Variants in CD163 Gene are Associated with Plasma Triglyceride and Total Cholesterol Levels in Severely Obese Individuals. Endocrinol Metab Synd 3:146. doi: 10.4172/2161-1017.1000146

Copyright: © 2014 Guénard F, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Objective: The CD163 glycoprotein is a member of the scavenger receptor cysteine-rich superfamily acting as an inflammatory modulator inducing anti-inflammatory pathways. Previous findings from our group identified this gene as being differentially expressed in visceral adipose tissue (VAT) of severely obese men with vs. without the metabolic syndrome. The current study aimed to test the association between CD163 gene polymorphisms and obesity-related metabolic complications.

Methods: Sequencing of the CD163 gene region was conducted in 25 severely obese individuals. Eleven tagging SNPs (tSNP) were selected and tested for association with obesity-related complications in nearly 1900 severely obese individuals. To further explore potential mechanisms underlying associations identified, the impact of tSNPs on methylation levels of 3 CpG sites (two promoter and one intronic) and gene expression levels were tested in a subset of 14 individuals.

Results: Rare allele carriers for rs7980201 demonstrated lower fasting total cholesterol (total-C) levels (p=0.01) while rs4883263 rare allele carriers had increased total-C (p=0.04) and triglyceride (TG) levels (p=0.01). An association identified between rs7980201 SNP and methylation level of a promoter CpG site (p=0.04) suggested an impact on CD163 gene methylation in VAT, but such association was not reflected at gene expression level.

Conclusion: The current study reports association of CD136 gene variations with fasting total-C and TG levels and suggests that CD163 SNPs could contribute to the inter-individual variability observed in obesity-related metabolic complications.

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