Association of a serotonin transporter gene (SLC6A4) 5-HTTLPR polymorphism with body mass index categories but not type 2 diabetes mellitus in Mexicans.
The serotonergic system has been hypothesized to contribute to the biological susceptibility to type 2 diabetes mellitus (T2DM) and body-mass index (BMI) categories. We investigate a possible association of 5-HTTLPR polymorphism (L and S alleles) in the promoter region of the serotonin transporter gene (SLC6A4) with the development of T2DM and/or higher BMI by analyzing a sample of 138 individuals diagnosed with T2DM and 172 unrelated controls from the Mexican general population. In the total sample genotypes were distributed according to Hardy-Weinberg equilibrium, and S allele frequency was 0.58. There was no statistical association between 5-HTTLPR polymorphism and the development of T2DM in this Mexican population sample (p = 0.12). Nevertheless, logistic regression analysis of the L allele and increased BMI disclosed an association, after adjusting for age, sex and T2DM (p = 0.02, OR 1.74, 95% CI: 1.079-2.808).
Facultad de Medicina e Ingeniería en Sistemas Computacionales, Departamento de Genética Aplicada a la Medicina, Universidad Autónoma de Tamaulipas, H. Matamoros Tamaulipas, México.
Valeria
V
Peralta-Leal
Evelia
E
Leal-Ugarte
Juan P
JP
Meza-Espinoza
Ingrid P
IP
Dávalos-Rodríguez
Anabel
A
Bocanegra-Alonso
Rosa I
RI
Acosta-González
Enrique
E
Gonzales
Saraswathy
S
Nair
Jorge
J
Durán-González