title: Association between Opioid Receptor mu 1 (OPRM1) Gene Polymorphisms and Tobacco and Alcohol Consumption in a Spanish Population.
abstract: Evidence gained from animals and humans suggests that the encephalic opioid system might be involved in the development of drug addiction through its role in reward. Our aim is to assess the influence of genetic variations in the opioid receptor mu 1 on alcohol and tobacco consumption in a Spanish population. 763 unrelated individuals (465 women, 298 men) aged 18-85 years were recruited between October 2011 and April 2012. Participants were requested to answer a 35-item questionnaire on tobacco and alcohol consumption, as well as to complete the AUDIT and Fagerström tests. Individuals were genotyped for three polymorphisms in the opioid receptor mu 1 (OPRM1) gene, using a TaqMan protocol. In males, the rs10485057 polymorphism was associated with total pure ethanol intake and with the risk of being an alcohol consumer. Also, this polymorphism was significantly associated with higher Fagerström scores. Rs1799971 had a different influence on adaptive and maladaptive patterns of alcohol use. Despite the limited sample size, our study might enrich current knowledge on patterns of alcohol use, because it encompasses both extreme and adaptive phenotypes, providing thus a wider perspective on this subject.
authors.affiliation: Department of Preventive and Legal Medicine, School of Medicine, University of Valencia, Valencia. ffrances@uv.es.
authors.forename: Francesc
authors.initials: F
authors.lastname: Francès
authors.forename: Olga
authors.initials: O
authors.lastname: Portolés
authors.forename: Ana
authors.initials: A
authors.lastname: Castelló
authors.forename: Jose Antonio
authors.initials: JA
authors.lastname: Costa
authors.forename: Fernando
authors.initials: F
authors.lastname: Verdú
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000428:Alcohol Drinking / Q000453:epidemiology / Q000208:ethnology* / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D059647:Gene-Environment Interaction; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011110:Polymorphism, Genetic / Q000235:genetics*; D017450:Receptors, Opioid, mu / Q000235:genetics*; D012737:Sex Factors; D013030:Spain / Q000453:epidemiology; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000208:ethnology / Q000235:genetics; D011795:Surveys and Questionnaires; D064424:Tobacco Use / Q000453:epidemiology / Q000208:ethnology* / Q000235:genetics*; D055815:Young Adult
chemical_list: C485764:OPRM1 protein, human; D017450:Receptors, Opioid, mu