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PubMed:17495183 / 1317-1326 JSONTXT 5 Projects

Tenomodulin is associated with obesity and diabetes risk: the Finnish diabetes prevention study. We recently showed that long-term weight reduction changes the gene expression profile of adipose tissue in overweight individuals with impaired glucose tolerance (IGT). One of the responding genes was X-chromosomal tenomodulin (TNMD), a putative angiogenesis inhibitor. Our aim was to study the associations of individual single nucleotide polymorphisms and haplotypes with adiposity, glucose metabolism, and the risk of type 2 diabetes (T2D). Seven single nucleotide polymorphisms from two different haploblocks were genotyped from 507 participants of the Finnish Diabetes Prevention Study (DPS). Sex-specific genotype effects were observed. Three markers of haploblock 1 were associated with features of adiposity in women (rs5966709, rs4828037) and men (rs11798018). Markers rs2073163 and rs1155794 from haploblock 2 were associated with 2-hour plasma glucose levels in men during the 3-year follow-up. The same two markers together with rs2073162 associated with the conversion of IGT to T2D in men. The risk of developing T2D was approximately 2-fold in individuals with genotypes associated with higher 2-hour plasma glucose levels; the hazard ratios were 2.192 (p = 0.025) for rs2073162-A, 2.191 (p = 0.027) for rs2073163-C, and 1.998 (p = 0.054) for rs1155974-T. These results suggest that TNMD polymorphisms are associated with adiposity and also with glucose metabolism and conversion from IGT to T2D in men.

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