Association of the dopamine D2 receptor rs1800497 polymorphism with food addiction, food reinforcement, and eating behavior in Chilean adults

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dc.contributor.authorObregon, Ana M.
dc.contributor.authorOyarce, Karina
dc.contributor.authorGarcia-Robles, Maria A.
dc.contributor.authorValladares, Macarena
dc.contributor.authorPettinelli, Paulina
dc.contributor.authorGoldfield, Gary S.
dc.date.accessioned2025-01-20T22:02:05Z
dc.date.available2025-01-20T22:02:05Z
dc.date.issued2022
dc.description.abstractPurpose The regulation of food intake and body weight involves two interacting systems: (a) The homeostatic system (including biological regulators of hunger and satiety) and (b) the non-homeostatic system, (involving concepts of food reinforcement and food addiction). Studies have established a strong genetic component in eating behavior and obesity. The TaqI A1 polymorphism (rs1800497) has previously been associated with eating behavior, diminished dopamine D2 receptor (DRD2) density, higher body mass, and food reinforcement, but relations to food addiction remain unclear. Aim To evaluate the association between the polymorphism rs1800497 with eating behavior, food reinforcement and food addiction in Chilean adults. Methods This cross-sectional study recruited a convenience sample of 97 obese, 25 overweight and 99 normal-weight adults (18-35 years). Anthropometric measurements were performed by standard procedures. Eating behavior was assessed using the: Yale Food Addiction Scale (YFAS), the Three Factor Eating Behavior Questionnaire and the Food Reinforcement Value Questionnaire (FRVQ). The DRD2 genotype (rs1800497) was determined by taqman assays. Results Twenty-two percentage of the participants met the criteria for food addiction. Food addiction was higher in women than men (26% vs 10.7%) and in obese compared to non-obese (40% vs 6%). There was no relationship between food addiction and DRD2 genotype. However when stratified by sex and nutritional status, obese female carriers of the A1 allele reported greater scores on emotional eating and snack food reinforcement compared to non-carriers. Conclusions The DRD2 polymorphism is associated with some hedonic aspects of eating behavior, namely food reinforcement and emotional eating but not food addiction, and this association may be moderated by sex and obesity status, with obese women who are carriers of this genetic variant at higher risk.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s40519-021-01136-1
dc.identifier.eissn1590-1262
dc.identifier.issn1124-4909
dc.identifier.urihttps://doi.org/10.1007/s40519-021-01136-1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93932
dc.identifier.wosidWOS:000630282200001
dc.issue.numero1
dc.language.isoen
dc.pagina.final224
dc.pagina.inicio215
dc.revistaEating and weight disorders-studies on anorexia bulimia and obesity
dc.rightsacceso restringido
dc.subjectDopamine 2 receptor
dc.subjectFood addiction
dc.subjectPolymorphism
dc.subjectEating behavior
dc.subject.ods05 Gender Equality
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa05 Igualdad de género
dc.subject.odspa03 Salud y bienestar
dc.titleAssociation of the dopamine D2 receptor rs1800497 polymorphism with food addiction, food reinforcement, and eating behavior in Chilean adults
dc.typeartículo
dc.volumen27
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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