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01.05.2005 | Article

Hypoadiponectinaemia and high risk of type 2 diabetes are associated with adiponectin-encoding (ACDC) gene promoter variants in morbid obesity: evidence for a role of ACDC in diabesity

verfasst von: F. Vasseur, N. Helbecque, S. Lobbens, V. Vasseur-Delannoy, C. Dina, K. Clément, P. Boutin, T. Kadowaki, P. E. Scherer, P. Froguel

Erschienen in: Diabetologia | Ausgabe 5/2005

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Abstract

Aims/hypothesis

Morbid obesity (BMI>40 kg/m²) affecting 0.5–5% of the adult population worldwide is a major risk factor for type 2 diabetes. We aimed to elucidate the genetic bases of diabetes associated with obesity (diabesity), and to analyse the impact of corpulence on the effects of diabetes susceptibility genes.

Methods

We genotyped known single nucleotide polymorphisms (SNPs) in the adiponectin-encoding adipocyte C1q and collagen-domain-containing (ACDC) gene (−11,391G>A, −11,377C>G, +45T>G and +276G>T), the peroxisome proliferator-activated receptor gamma (PPARG) Pro12Ala SNP and ACDC exon 3 variants in 703 French morbidly obese subjects (BMI 47.6±7.4 kg/m²), 808 non-obese subjects (BMI<30 kg/m²) and 493 obese subjects (30≤BMI<40 kg/m²).

Results

Two 5′-ACDC SNPs −11,391G>A, −11,377C>G were associated with adiponectin levels (p=0.0003, p=0.008) and defined a ‘low-level’ haplotype associated with decreased adiponectin levels (p=0.0002) and insulin sensitivity (p=0.01) and with a risk of type 2 diabetes that was twice as high (p=0.002). In contrast, the prevalence of the PPARG Pro12Ala was identical in diabetic and normoglycaemic morbidly obese subjects. The PPARG Pro12 allele only displayed a trend of association with type 2 diabetes in the non-obese group. ACDC exon 3 variants were associated with type 2 diabetes in the non-obese group only (odds ratio 7.85, p<0.0001). In contrast, the 5′-ACDC ‘low-level’ haplotype was associated with type 2 diabetes in obese and morbidly obese subjects (odds ratio 1.73 and 1.92) but not in non-obese individuals.

Conclusions/interpretation

These data clarify the contribution of the 5′-ACDC SNPs to the risk of diabesity. Their interaction with corpulence suggests for the first time a different genetic profile of type 2 diabetes in morbidly obese patients compared with in less obese individuals.

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Titel: Hypoadiponectinaemia and high risk of type 2 diabetes are associated with adiponectin-encoding (ACDC) gene promoter variants in morbid obesity: evidence for a role of ACDC in diabesity
verfasst von: F. Vasseur
N. Helbecque
S. Lobbens
V. Vasseur-Delannoy
C. Dina
K. Clément
P. Boutin
T. Kadowaki
P. E. Scherer
P. Froguel
Publikationsdatum: 01.05.2005
Verlag: Springer-Verlag
Erschienen in: Diabetologia / Ausgabe 5/2005
Print ISSN: 0012-186X
Elektronische ISSN: 1432-0428
DOI: https://doi.org/10.1007/s00125-005-1729-z

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