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Title: Association of polymorphisms in 5-HTT (SLC6A4) and MAOA genes with measures of obesity in young adults of Portuguese origin
Authors: Dias, Helena 
Muc, Magdalena 
Padez, Cristina 
Manco, Licínio 
Keywords: 5-HTTLPR and STin2 polymorphisms,; MAOA VNTR polymorphism,; serotonin transporter,; overweight and obesity,; Portugal
Issue Date: 2016
Project: info:eu-repo/grantAgreement/FCT/5876/147309/PT 
Serial title, monograph or event: Archives of Physiology and Biochemistry
Volume: 122
Issue: 1
Abstract: Objectives: To investigate the association of polymorphisms in SLC6A4 and MAOA genes with overweight (including obesity). Material and methods: Young adults (n = 535) of Portuguese origin were genotyped for the SLC6A4 polymorphisms 5-HTTLPR and STin2 and a MAOA VNTR. BMI and body fat percentage were measured and a questionnaire was used to assess individual’s sport practicing habits. Results: In whole study sample, haplotype-based analysis revealed significant association with overweight/obesity for the individual 5-HTTLPR/Stin2 haplotype L10 (p = 0.04). In men, the MAOA 3R genotype was nominally associated with body fat (p = 0.04). In inactive individuals, overweight/obesity was found significantly associated with 5-HTTLPR L-allele (p = 0.01) and nominally associated with STin2 10-allele (p = 0.03). A significant association was also found testing for all haplotype effects (χ2 = 8.7; p = 0.03). Conclusions: We found some evidences for the association of SLC6A4 and MAOA genes with measures of obesity. Our results suggest physical inactivity accentuates the influence of SLC6A4 polymorphisms on obesity risk.
DOI: 10.3109/13813455.2015.1111390
Rights: openAccess
Appears in Collections:I&D CIAS - Artigos em Revistas Internacionais

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