Abstract | BACKGROUND: 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.
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Authors | 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 |
Journal | Human heredity
(Hum Hered)
Vol. 75
Issue 2-4
Pg. 213-9
( 2013)
ISSN: 1423-0062 [Electronic] Switzerland |
PMID | 24081236
(Publication Type: Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Copyright | © 2013 S. Karger AG, Basel. |
Chemical References |
- Dietary Proteins
- Transcription Factor AP-2
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Topics |
- Adult
- Dietary Proteins
(metabolism)
- Female
- Glycemic Index
(genetics)
- Humans
- Male
- Polymorphism, Single Nucleotide
(genetics)
- Recommended Dietary Allowances
- Transcription Factor AP-2
(genetics)
- Weight Loss
(genetics)
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