Association between liver X receptor alpha gene polymorphisms and risk of metabolic syndrome in French populations

International Journal of Obesity : Journal of the International Association for the Study of Obesity
Vanessa LegryAline Meirhaeghe

Abstract

The metabolic syndrome is a complex and multifactorial disorder often associated with type 2 diabetes mellitus and cardiovascular diseases. The liver X receptor alpha (NR1H3) plays numerous roles in metabolic pathways involved in metabolic syndrome. In the search for susceptibility genes to metabolic syndrome, we hypothesized that common genetic variation in NR1H3 gene influences metabolic syndrome susceptibility. Two large French population-based studies (n=1130 and 1160) including overall 664 individuals with and 1626 individuals without metabolic syndrome were genotyped for three polymorphisms (rs12221497, rs11039155 and rs2279239) of NR1H3. We found that the -6A allele of rs11039155 was consistently associated with a 30% reduction in risk of metabolic syndrome in the two independent population samples (adjusted OR (95% CI)=0.68 (0.53-0.86), P=0.001 for the combined sample). Moreover, it was associated with an increase in plasma HDL-cholesterol concentrations (P=0.02 for the combined sample). Neither rs12221497 nor rs11039155, both polymorphisms located in the 5' region of NR1H3, had significant influence on NR1H3 and ATP-binding cassette transporter A1 (ABCA1) gene expression in primary human macrophages. These results sugg...Continue Reading

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Mar 19, 2009·BMC Medical Genetics·Ingrid DahlmanKnut R Steffensen
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