Dopamine genes (DRD2/ANKK1-TaqA1 and DRD4-7R) and executive function: their interaction with obesity

Obesity is a multifactorial disease caused by the interaction between genotype and environment, and it is considered to be a type of addictive alteration. The A1 allele of the DRD2/ANKK1-TaqIA gene has been associated with addictive disorders, with obesity and with the performance in executive funct...

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Detalhes bibliográficos
Autores: Ariza González, Mar, Garolera i Freixa, Maite, Jurado, Ma. Ángeles (María Ángeles), García-García, Isabel, Hernan, Imma, Sánchez-Garre, Consuelo, Vernet i Vernet, Maria, Sender Palacios, María José, Marqués Iturria, Idoia, Pueyo Benito, Roser, Segura i Fàbregas, Bàrbara, Narberhaus, Ana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/96852
Acesso em linha:https://hdl.handle.net/2445/96852
Access Level:acceso abierto
Palavra-chave:Dopamina
Obesitat
Genètica humana
Influència del medi ambient en l'home
Dopamine
Obesity
Human genetics
Environmental effects on human beings
Descrição
Resumo:Obesity is a multifactorial disease caused by the interaction between genotype and environment, and it is considered to be a type of addictive alteration. The A1 allele of the DRD2/ANKK1-TaqIA gene has been associated with addictive disorders, with obesity and with the performance in executive functions. The 7 repeat allele of the DRD4 gene has likewise been associated with the performance in executive functions, as well as with addictive behaviors and impulsivity. Participants were included in the obesity group (N = 42) if their body mass index (BMI) was equal to or above 30, and in the lean group (N = 42) if their BMI was below 25. The DRD2/ANKK1-TaqIA and DRD4 VNTR polymorphisms were obtained. All subjects underwent neuropsychological assessment. Eating behavior traits were evaluated. The 'DRD2/ANKK1-TaqIA A1-allele status' had a significant effect on almost all the executive variables, but no significant 'DRD4 7R-allele status' effects were observed for any of the executive variables analyzed. There was a significant 'group' x 'DRD2/ANKK1-TaqIA A1-allele status' interaction effect on LN and 'group' x 'DRD4 7R-allele status' interaction effect on TMT B-A score. Being obese and a carrier of the A1 allele of DRD2/ANKK1-TaqIA or the 7R allele of DRD4 VNTR polymorphisms could confer a weakness as regards the performance of executive functions.

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