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J. Pers. Med. 2018, 8(1), 7;

Genetic Variations in Sweet Taste Receptor Gene Are Related to Chocolate Powder and Dietary Fiber Intake in Obese Children and Adolescents

Department of Endocrinology, League of Childhood Obesity, Hospital das Clínicas da FMUSP, Sao Paulo 05403-000, Brazil
Laboratory of Carbohydrates and Radioimmunoassay (LIM18) Faculty of Medicine, University of Sao Paulo, Av. Dr. Arnaldo 455, 3 Andar (Sala 3324), Sao Paulo 01246-903, Brazil
Faculdade de Medicina da Universidade de São Paulo, Sao Paulo 01246-903, Brazil
Author to whom correspondence should be addressed.
Received: 22 September 2017 / Revised: 10 January 2018 / Accepted: 16 January 2018 / Published: 29 January 2018
(This article belongs to the Special Issue Nutrigenomics)
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Childhood obesity is a major public health problem. It has a direct impact on the quality of life of children and adolescents, as well as on their future risk of developing chronic diseases. Dietary patterns rich in fats and sugars and lacking dietary fibers, vitamins, and minerals, as well as lack of physical exercise have been associated with the rise of obesity prevalence. However, factors that contribute to the preference for foods rich in these nutrients are not well established. Taste is recognized as an important predictor of food choices, and polymorphisms in taste-related genes may explain the variability of taste preference and food intake. The aim of this research is to evaluate the influence of polymorphisms of the sweet taste receptor gene TAS1R2 on diet and metabolic profile in obese children and adolescents. A cross-sectional study with 513 obese children and adolescents and 135 normal-weight children was carried out. A molecular study was performed for the single nucleotide polymorphisms (SNPs) rs9701796 and rs35874116 of TAS1R2, and dietary intake, anthropometric parameters (weight, height, waist circumference, waist-to-height ratio (WHtR)), and metabolic profile (including fasting glucose, insulin, triglyceride, high-density lipoprotein (HDL)–cholesterol, and leptin levels) were analyzed. The variant rs9701796 was associated with increased waist-height ratio, as well as with a higher chocolate powder intake in obese children. The variant rs35874116 was associated with a lower dietary fiber intake. In conclusion, there was no relationship between genotypes and risk of obesity. Obese adolescents carrying the serine allele of SNP rs9701796 in TAS1R2 showed higher waist-to-height ratio and chocolate powder intake, whereas those carrying the valine allele of SNP rs35874116 in TAS1R2 were characterized by lower dietary fiber intake. View Full-Text
Keywords: TAS1R2; genotype; obesity; food intake; polymorphism TAS1R2; genotype; obesity; food intake; polymorphism
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Pioltine, M.B.; De Melo, M.E.; Santos, A.S.; Machado, A.D.; Fernandes, A.E.; Fujiwara, C.T.; Cercato, C.; Mancini, M.C. Genetic Variations in Sweet Taste Receptor Gene Are Related to Chocolate Powder and Dietary Fiber Intake in Obese Children and Adolescents. J. Pers. Med. 2018, 8, 7.

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