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The Mediterranean diet protects against waist circumference enlargement in 12Ala carriers for the PPARgamma gene: 2 years' follow-up of 774 subjects at high cardiovascular risk.
Authors: Razquin, C. (Cristina)
Martinez, J.A. (José Alfredo)
Martinez-Gonzalez, M.A. (Miguel Angel)
Corella, D. (Dolores)
Santos, J.M. (José Manuel)
Marti, A. (Amelia)
Keywords: Genetic epidemiology
Waist circumference
Mediterranean diet
PPARγ
Issue Date: 2009
Publisher: Cambridge University Press
Publisher version: http://dx.doi.org/10.1017/S0007114509289008
ISSN: 0007-1145
Citation: Razquin C, Alfredo Martinez J, Martinez-Gonzalez MA, Corella D, Santos JM, Marti A. The mediterranean diet protects against waist circumference enlargement in 12Ala carriers for the PPARgamma gene: 2 years' follow-up of 774 subjects at high cardiovascular risk. Br J Nutr. 2009 Sep;102(5):672-9.
Abstract
The PPARgamma gene regulates insulin sensitivity and adipogenesis. The Pro12Ala polymorphism of this gene has been related to fat accumulation. Our aim was to analyse the effects of a 2-year nutritional intervention with Mediterranean-style diets on adiposity in high-cardiovascular risk patients depending on the Pro12Ala polymorphism of the PPARgamma gene. The population consisted of a substudy (774 high-risk subjects aged 55-80 years) of the Prevención con Dieta Mediterránea (PREDIMED) randomised trial aimed at assessing the effect of the Mediterranean diet for CVD prevention. There were three nutritional intervention groups: two of them of a Mediterranean-style diet and the third was a control group advised to follow a conventional low-fat diet. All the participants were genotyped by PCR-restriction fragment length polymorphism (RFLP). The results showed that carriers of the 12Ala allele allocated to the control group had a statistically significant higher change in waist circumference (adjusted difference coefficient = 2.37 cm; P = 0.014) compared with wild-type subjects after 2 years of nutritional intervention. This adverse effect was not observed among 12Ala carriers allocated to both Mediterranean diet groups. In diabetic patients a statistically significant interaction between Mediterranean diet and the 12Ala allele regarding waist circumference change was observed ( - 5.85 cm; P = 0.003). In conclusion, the Mediterranean diet seems to be able to reduce waist circumference in a high-cardiovascular risk population, reversing the negative effect that the 12Ala allele carriers of the PPARgamma gene appeared to have. The beneficial effect of this dietary pattern seems to be higher among type 2 diabetic subjects.
Permanent link: http://hdl.handle.net/10171/21203
Appears in Collections:DA - Farmacia - CAFT - Línea Especial de Nutrición
DA - Medicina - MPSP -Artículos de revista
DA - Farmacia - CAFT - Artículos de revista

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