title: Alcohol dependence, disinhibited behavior and variation in the prodynorphin gene.
abstract: The results of the current analyses present preliminary evidence of an association between putatively functional variation in the prodynorphin (PDYN) gene and a dimensional measure of disinhibited behavior. A 68bp sequence in the core promoter region of the PDYN gene was genotyped in a community sample of 1021 adults aged 30-54. Participants were interviewed for lifetime history of DSM-IV alcohol dependence and completed two self-report measures of sensation seeking and impulsiveness. Fifteen percent (n=151) of the sample met DSM-IV criteria for alcohol dependence and while results did not support an association between the PDYN polymorphism and the diagnosis of alcohol dependence, we did observe an association between the "low" expressing L allele of the PDYN gene and a preference for engaging in disinhibited behavior. Additionally, people who had both a history of alcohol dependence and higher scores on this Disinhibited Behavior scale were most likely to carry an L allele. These results indicate that variation in the PDYN gene is associated with a dimensional trait or intermediate phenotype that reflects a preference for heavy drinking and engaging in related risky behaviors (e.g., drug use, sexual activity).
authors: Department of Psychology, Queens College and the Graduate Center, City University of New York, New York, NY, USA. janine.flory@qc.cuny.edu
authors: Janine D
authors: JD
authors: Flory
authors: Carolyn L
authors: CL
authors: Pytte
authors: Yasmin
authors: Y
authors: Hurd
authors: Robert E
authors: RE
authors: Ferrell
authors: Stephen B
authors: SB
authors: Manuck
mesh_terms: D000328:Adult; D000437:Alcoholism / Q000235:genetics* / Q000523:psychology*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D004745:Enkephalins / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007175:Impulsive Behavior / Q000235:genetics*; D007266:Inhibition, Psychological; D008297:Male; D008875:Middle Aged; D010551:Personality / Q000235:genetics; D011110:Polymorphism, Genetic / Q000235:genetics*; D011498:Protein Precursors / Q000235:genetics*; D012737:Sex Factors
chemical_list: D004745:Enkephalins; D011498:Protein Precursors; C033660:preproenkephalin