, Volume 13, Issue 3, pp 243-247

Apolipoprotein A5 T-1131C variant confers risk for metabolic syndrome

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The −1131C is a naturally occurring variant of the apolipoprotein A5 (ApoA5) gene, which has been shown to associate with increased triglyceride levels. This variant has also been shown to confer risk for development of ischemic heart disease and stroke. The gene is in linkage disequilibrium with factors known to correlate with impaired glucose homeostasis. These observations prompted us to study the prevalence of the ApoA5 –1131C allele in patients with metabolic syndrome. A total of 201 metabolic syndrome patients and 210 controls were studied. In both groups the triglyceride levels of patients with −1131C allele were significantly increased compared to the subjects with −1131T allele (3.22 ±0.43 mmol/1 vs. 2.24 ±0.12 mmol/1, p<0.01 in the metabolic syndrome patients; 2.10 ±0.19 mmol/1 vs. 1.22 ±0.05 mmol/1, p<0.01 in the controls). In metabolic syndrome patients the prevalence of the ApoA5 –1131C variant was increased compared to the healthy controls (11% vs. 6.20%). Multiplex regression analysis model adjusted for age, gender, serum total cholesterol levels, acute myocardial infarction and stroke events revealed that the examined ApoA5 variant confers risk for the development of metabolic syndrome: the odds ratio at 95% confidence interval was 3.622 (1.200–10.936), p=0.02. Our findings strongly suggest that this variant is a risk factor for the development of hypertriglyceridemia and metabolic syndrome.