Preliminary findings on the role of PLIN1 polymorphisms on body composition and energy metabolism response to energy restriction in obese omen

Abstract

The aim of the present study as to investigate the association of PLIN1 11482G>A (rs894160) and PLIN1 13041A>G (rs2304795) polymorphisms ith body composition, energy and substrate metabolism, and the metabolic response to a 12-eek energy-restricted diet in obese omen. The study comprised a total of seventy-eight obese (BMI 34•0 (sd 2•8) kg/m2) omen (age 36•7 (sd 7) years). e measured eight, height and aist circumference before and after a 12-eek controlled energy-restricted diet intervention. Body fat mass and lean mass ere measured by dual-energy X-ray absorptiometry. RMR and lipid oxidation rate ere measured by indirect calorimetry. We also analysed fasting plasma glucose, insulin, cholesterol and leptin. Women carrying the 11482A allele had a lower reduction in waist circumference than non-A allele carriers (3•2 (sd 0•5) v. 4•6 (sd 0•6) %, respectively, P = 0•047; P for gene diet interaction = 0•064). Moreover, women with the 11482A allele had a higher decrease in lipid oxidation rate than non-A allele carriers (58•9 (sd 6•7) v. 31•3 (sd 8•2) %, respectively, P = 0•012; P for genediet interaction = 0•004). There was no interaction effect between the 13041A>G polymorphism and diet-induced changes on the outcome variables (all P>0•1). These results confirm and extend previous findings suggesting that the PLIN1 11482G>A polymorphism plays a modulating role on diet-induced changes in body fat and energy metabolism in obese women. © 2011 The Authors.