TY - JOUR
T1 - A functional polymorphism of the mu-opioid receptor gene (OPRM1) influences cue-induced craving for alcohol in male heavy drinkers
AU - van den Wildenberg, E.
AU - Wiers, R.W.H.J.
AU - Dessers, J.
AU - Janssen, R.G.J.H.
AU - Lambrichs, E.H.
AU - Smeets, H.J.M.
AU - van Breukelen, G.J.P.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Background: The mu-opioid receptor gene (OPRM1) codes for the mu-opioid receptor, which binds beta-endorphin. The A118G polymorphism in this gene affects beta-endorphin binding such that the Asp40 variant (G allele) binds beta-endorphin 3 times more tightly than the more common Asn40 variant (A allele). This study investigated the influence of the A118G polymorphism on cue reactivity after exposure to an alcoholic beverage in male heavy drinkers. Methods: Participants were either homozygous for the A allele (n = 84) or carrying at least 1 copy of the G allele (n = 24). All participants took part in a cue-reactivity paradigm where they were exposed to water and beer in 3-minute trials. The dependent variables of main interest were subjective craving for alcohol, subjective arousal, and saliva production. Results: G allele carriers reported significantly more craving for alcohol than the A allele participants ( as indicated by the within-subject difference in craving after beer vs after water exposure). No differences were found for subjective arousal and saliva. Both groups did not differ in family history of alcoholism. Participants with the G allele reported a significantly higher lifetime prevalence of drug use than participants homozygous for the A allele. Conclusions: A stronger urge to drink alcohol after exposure to an alcoholic beverage might contribute to a heightened risk for developing alcohol-related problems in individuals with a copy of the G allele. The G allele might also predispose to drug use in general.
AB - Background: The mu-opioid receptor gene (OPRM1) codes for the mu-opioid receptor, which binds beta-endorphin. The A118G polymorphism in this gene affects beta-endorphin binding such that the Asp40 variant (G allele) binds beta-endorphin 3 times more tightly than the more common Asn40 variant (A allele). This study investigated the influence of the A118G polymorphism on cue reactivity after exposure to an alcoholic beverage in male heavy drinkers. Methods: Participants were either homozygous for the A allele (n = 84) or carrying at least 1 copy of the G allele (n = 24). All participants took part in a cue-reactivity paradigm where they were exposed to water and beer in 3-minute trials. The dependent variables of main interest were subjective craving for alcohol, subjective arousal, and saliva production. Results: G allele carriers reported significantly more craving for alcohol than the A allele participants ( as indicated by the within-subject difference in craving after beer vs after water exposure). No differences were found for subjective arousal and saliva. Both groups did not differ in family history of alcoholism. Participants with the G allele reported a significantly higher lifetime prevalence of drug use than participants homozygous for the A allele. Conclusions: A stronger urge to drink alcohol after exposure to an alcoholic beverage might contribute to a heightened risk for developing alcohol-related problems in individuals with a copy of the G allele. The G allele might also predispose to drug use in general.
U2 - 10.1111/j.1530-0277.2006.00258.x
DO - 10.1111/j.1530-0277.2006.00258.x
M3 - Article
C2 - 17207095
SN - 0145-6008
VL - 31
SP - 1
EP - 10
JO - Alcoholism-Clinical and Experimental Research
JF - Alcoholism-Clinical and Experimental Research
IS - 1
ER -