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Title: Functional interleukin-10 promoter variants in coronary artery disease patients in Tunisia.
Author: Ben-Hadj-Khalifa S, Ghazouani L, Abboud N, Ben-Khalfallah A, Annabi F, Addad F, Almawi WY, Mahjoub T.
Journal: Eur Cytokine Netw; 2010 Jun; 21(2):136-41. PubMed ID: 20519163.
Abstract:
OBJECTIVES: The contribution of interleukin (IL)-10 promoter variants -1082G/A, -819C/T, and -592C/A to the risk of coronary artery disease (CAD) was investigated in 291 CAD patients and 291 age- and gender-matched control subjects. METHODS AND RESULTS: IL-10 genotyping was performed using PCR-allele-specific amplification (PCR-ASA). Regression analysis was employed in assessing the contribution of the IL-10 variants to the overall CAD risk. A higher frequency of the -592A allele (p = 0.004), but not the -1082A (p = 0.828) or -819T (p = 0.952) alleles, was seen in CAD patients. A higher frequency of -592C/A (p = 0.011), and a lower frequency of -592C/C (p = 0.015) genotypes was noted in patients compared to healthy controls. Regression analysis demonstrated an association of -592C/A [OR (95% CI) = 1.82 (1.02-3.23)] and -592A/A [OR (95% CI) = 3.33 (1.27-9.09)] genotypes with 1-artery disease. Haplotype analysis revealed that none of the eight possible IL-10 haplotypes was associated with CAD or with the severity of CAD, and was confirmed by multivariate regression analysis, after adjusting for a number of confounders (smoking, systolic and diastolic blood pressure, hypertension, diabetes, glucose, cholesterol, and triglycerides). CONCLUSIONS: Our results suggest that the -592C/A, more so than the -1082G/A or the -819C/T IL-10 promoter variant alleles, may be considered to be a risk factor for CAD in Tunisians.

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