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Interaction between PPARG Pro12Ala and ADIPOQ G276T concerning cholesterol levels in childhood obesity.

In English

Författare

Summary, in English

Aim. The aim of this study was to investigate the role of two candidate gene polymorphisms for insulin resistance and lipid levels in obese children and adolescents. Methods. Two markers of insulin resistance and lipid levels, Pro12Ala in peroxisome proliferator-activated receptor-gamma2 (PPARG) and G276T in adiponectin (ADIPOQ), were genotyped in 285 obese children and adolescents. As the apolipoprotein E (APOE) polymorphisms C112R and R158C are known to have a profound impact on lipid levels in both children and adults, results were adjusted for APOE genotype. Results. We found no association for PPARG or ADIPOQ polymorphisms with Body Mass Index (BMI), High Density Lipoprotein (HDL)-cholesterol, triglycerides or Insulin Resistance estimated by Homeostasis Model of Assessment (HOMA-IR). Wild type carriers of PPARG Pro12Ala (p<0.05), homozygous carriers of the variant allele of ADIPOQ G276T (p<0.001) and epsilon4 carriers of APOE (p<0.001) had higher total and low density lipoprotein (LDL)-cholesterol levels adjusted for age, gender, BMI and insulin sensitivity. A PPARG/ADIPOQ risk genotype combination was identified by analysis of covariance (ANCOVA) comparing all existing combinations. Carriers of PPARG Pro/Pro and ADIPOQ 276 T/T had higher total (5.0 [4.1-5.8] vs. 4.1 [3.6-4.6]mmol/l) and LDL-cholesterol levels (3.7 [2.9-4.5] vs. 3.0 [2.5-3.5]mmol/l) compared with carriers of other combinations (p<0.001). Importantly, the PPARG and ADIPOQ associations were unaffected when adjusting for APOE genotype. Conclusions. Genetic variants in candidate genes for insulin resistance are associated with cholesterol levels in obese children and adolescents, and may offer additional information in the risk assessment of obese children.

Avdelning/ar

  • Diabetes - Clinical Obesity

Publiceringsår

2009

Språk

Engelska

Sidor

119-125

Publikation/Tidskrift/Serie

International Journal of Pediatric Obesity

Volym

4

Dokumenttyp

Artikel i tidskrift

Förlag

Taylor & Francis

Ämne

  • Nutrition and Dietetics

Status

Published

Forskningsgrupp

  • Diabetes - Clinical Obesity

ISBN/ISSN/Övrigt

  • ISSN: 1747-7174