CDH13 polymorphisms are associated with adiponectin levels and metabolic syndrome traits independently of visceral fat mass
2016
Visceral fat accumulation contributes to the development of
metabolic syndrome. As visceral fat accumulation increases,
adiponectinlevels decrease; therefore,
adiponectinprovides a link between visceral fat accumulation and metabolic disorders. Genome-wide association studies (GWASs) have identified genetic variations in the cadherin 13 (CDH13) gene that are associated with
adiponectinlevels.We investigated whether single nucleotide polymorphisms (SNPs) in CDH13 was associated with
adiponectinlevels and
metabolic syndrometraits independent of the visceral fat area (VFA), as measured using computed tomography (CT) in 945 Japanese individuals.We found that three CDH13 SNPs reported by recent GWASs (i.e., rs3865188, rs4783244, and rs12051272) were significantly associated with higher
adiponectinlevels (P < 1 × 10 (-14)), even after adjustment for VFA. However, these
adiponectin-inducing alleles of CDH13 SNPs were significantly associated with traits consistent with deteriorating metabolic symptoms, such as higher fasting insulin, homeostasis model assessment-insulin resistance (HOMA-IR) scores, and triglycerides and lower high-density lipoprotein (HDL)-cholesterol levels, similar to increasing VFA and decreasing
adiponectinlevels.These results suggested that CDH13 SNPs cause an
adiponectin-resistant status to compensate for increasing
adiponectinlevels and could result in the deterioration of
metabolic syndrometraits.
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