• J. Nutr. Biochem. · Aug 2013

    Genetic variation in the cannabinoid receptor gene (CNR1) (G1359A polymorphism) and their influence on anthropometric parameters and metabolic parameters under a high monounsaturated vs. high polyunsaturated fat hypocaloric diets.

    • Daniel Antonio de Luis, Rocio Aller, Manuel Gonzalez Sagrado, Rosa Conde, Olatz Izaola, and Beatriz de la Fuente.
    • Center of Investigation of Endocrinology and Clinical Nutrition, Medicine School and Unit of Investigation, Hospital Rio Hortega, University of Valladolid, Valladolid, Spain. dadluis@yahoo.es
    • J. Nutr. Biochem. 2013 Aug 1; 24 (8): 1431-5.

    AbstractAn intragenic polymorphism (1359 G/A) of the cannabinoid receptor 1 (CNR1) gene was reported as a common polymorphism in Caucasian populations (rs1049353). Intervention studies with this polymorphism have yield contradictories results. We decide to investigate the role of polymorphism (G1359A) of (CNR1) gene on metabolic parameters and weight loss secondary to a high monounsaturated fat and high polyunsaturated fat hypocaloric diets in obese subjects. A population of 258 obese subjects was analyzed in a randomized trial. A nutritional evaluation was performed at the beginning and at the end of a 3-month period in which subjects received 1 of 2 diets (diet M: high monounsaturated fat diet vs diet P: high polyunsaturated fat diet). One hundred and sixty five patients (63.9%) had the genotype G1359G and 93 (36.1%) patients (A allele carriers) had G1359A (78 patients,30.3%) or A1359A (15 patients,5.8%) genotypes. In subjects with both genotypes, body mass index, weight, fat mass, waist circumference and systolic blood pressures decreased with both diets. With the diet-type M and in both genotype groups, biochemical parameters remained unchanged. After the diet type P and in subjects with both genotypes, glucose, total cholesterol, low-density lipoprotein (LDL) cholesterol, insulin and homeostasis model assessment for insulin resistance (HOMA-IR) levels decreased. In G1359G genotype subjects after both diets, leptin levels decreased. The finding of this study is the association of the A allele with a lack of improvement on leptin levels. Subjects with both genotypes and after a high polyunsaturated fat hypocaloric diet showed a significant improvement of LDL cholesterol, total cholesterol, HOMA-IR and insulin levels. Copyright © 2013 Elsevier Inc. All rights reserved.

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