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SLC6A14 and 5-HTR2C polymorphisms are associated with food intake and nutritional status in children.

Clin. Biochem.2015 Dec;48(18):1277-82. Epub 2015 Jul 06
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摘要


BACKGROUND:Serotonin plays a critical role in the regulation of food intake. The solute carrier family 6 member 14 (SLC6A14) and serotonin receptor 2C (5-HTR2C) genes are involved in the bioavailability and action of this neurotransmitter. OBJECTIVE:Evaluation of the association of six polymorphisms in these genes with food intake and nutritional status in children followed to 7-8years of age. DESIGN:Blood samples and the biodemographic data of 344 children were collected at three development stages, in a cross-sectional study undertaken with the cohort from a randomized trial. Polymorphisms were analyzed using polymerase chain reaction-based techniques. RESULTS:At 7 to 8years of age, carriers of the A alleles for both the SLC6A14 rs2312054 and SLC6A14 rs12391221 polymorphisms showed higher food intake, except for the sugar-dense food (SDF) intake parameter, than T/T and C/C homozygotes, respectively. Boy carriers of the C allele of rs2071877 had a higher sum of triceps and subscapular folds than T allele carriers at 7 to 8years old. For 5-HTR2C gene variants, A allele carriers (rs3813928) and T allele carriers (rs3813929) had higher food intake at 3 to 4years old than G/G and C/C homozygotes, respectively, except for SDF. At this age, the intake of energy-dense foods was higher in carriers of the T allele (rs3813929) than in C/C homozygotes. CONCLUSION:This study provides evidence that genetic variants of these proteins might be involved in the determination of food intake and nutritional status in children.

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