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Tanja Stocks

Tanja Stocks

Project manager

Tanja Stocks

TFAP2B-Dietary protein and glycemic index interactions and weight maintenance after weight loss in the diogenes trial

Author

  • Tanja Stocks
  • Lars Ängquist
  • Jörg Hager
  • Celine Charon
  • Claus Holst
  • J. Alfredo Martinez
  • Wim H.M. Saris
  • Arne Astrup
  • Thorkild I.A. Sørensen
  • Lesli H. Larsen

Summary, in English

Background:TFAP2B rs987237 is associated with obesity and has shown interaction with the dietary fat-to-carbohydrate ratio, which has an effect on weight loss. We investigated interactions between rs987237 and protein-to-carbohydrate ratio or glycemic index (GI) in relation to weight maintenance after weight loss. Methods: This study included 742 obese individuals from 8 European countries who participated in the Diet, Obesity, and Genes (DiOGenes) trial, lost ≥8% of their initial body weight during an 8-week low-calorie diet and were randomized to one of 5 ad libitum diets with a fixed energy percentage from fat: either low-protein/low-GI, low-protein/high-GI, high-protein/low-GI, or high-protein/high-GI diets, or a control diet for a 6-month weight maintenance period. Using linear regression analyses and additive genetic models, we investigated main and dietary interaction effects of TFAP2B rs987237 in relation to weight maintenance. Results: In total, 468 completers of the trial were genotyped for rs987237. High-protein diets were beneficial for weight maintenance in the AA genotype group (67% of participants), but in the AG and GG groups no differences were observed for low-or high-protein diets. On the high-protein diet, carriers of the obesity risk allele (G allele) regained 1.84 kg (95% CI: 0.02; 3.67, p = 0.047) more body weight per risk allele than individuals on a low-protein diet. There was no interaction effect between rs987237 and GI on weight maintenance. Conclusion:TFAP2B rs987237 and dietary protein/carbohydrate interacted to modify weight maintenance. Considering the carbohydrate proportion of the diet, the interaction was different from the previously reported rs987237-fat-to-carbohydrate ratio interaction for weight loss. Thus, TFAP2B-macronutrient interactions might diverge depending on the nutritional state.

Department/s

  • EpiHealth: Epidemiology for Health

Publishing year

2013-01-01

Language

English

Pages

213-219

Publication/Series

Human Heredity

Volume

75

Issue

2-4

Document type

Journal article

Publisher

Karger

Keywords

  • Body weight changes
  • Diet
  • Dietary carbohydrates
  • Dietary proteins
  • Glycemic index
  • Obesity
  • Transcription factor AP-2 beta

Status

Published

ISBN/ISSN/Other

  • ISSN: 0001-5652