Reference : The TaqI A DRD2 polymorphism in type II alcohol dependence: a marker of age at onset ...
Scientific journals : Article
Human health sciences : Psychiatry
http://hdl.handle.net/2268/1017
The TaqI A DRD2 polymorphism in type II alcohol dependence: a marker of age at onset or of a familial disease?
English
Pinto, Emmanuel mailto [Centre Hospitalier Universitaire de Liège - CHU > > Psychiatrie et psychologie médicale >]
Reggers, Jean [> > > >]
Gorwood, Philip [> > > >]
Boni, Claudette [> > > >]
Scantamburlo, Gabrielle mailto [Université de Liège - ULg > Département des sciences cliniques > Département des sciences cliniques >]
Pitchot, William mailto [Centre Hospitalier Universitaire de Liège - CHU > > Psychiatrie et psychologie médicale >]
Ansseau, Marc mailto [Université de Liège - ULg > Département des sciences cliniques > Psychiatrie et psychologie médicale >]
2009
Alcohol
Pergamon-Elsevier Science Ltd
43
4
271-5
Yes (verified by ORBi)
International
0741-8329
Oxford
United Kingdom
[en] Cloninger's type II is a severe, early-onset, male-limited, and genetically influenced, impulsive form of alcoholism. Significant association has been reported between the A1 allele of the D2 dopamine receptor (DRD2) gene, substance misuse and personality traits of impulsivity and novelty seeking. We assessed the association between the TaqI A DRD2 gene polymorphism with Cloninger's typology and family history of alcohol abuse, which is thought to be more frequent in type II alcoholics. Fifty-one male alcohol-dependent patients were discriminated between type I and type II according to age at onset of alcohol-related problems and interviewed about family history of alcoholism. The associations between DRD2 (A1 or A2 alleles), family history, and typology were assessed by Pearson's chi-square test. Although typology was not associated with the studied polymorphism, a higher rate of general family history of alcohol abuse was still observed in type II patients (chi(2)(1)=4.53; P=.033). Furthermore, the A1 allele of the DRD2 was significantly associated with paternal history of alcoholism (chi(2)(1)=4.66; P=.031) and male, first-degree, collateral history of alcoholism (chi(2)(1)=4.40; P=.036). Age at onset of alcohol-related problems as main discriminator between type I and type II alcohol dependence does not seem to be associated by the TaqI A DRD2 polymorphism. However, the A1 allele of the DRD2 may be a marker of male familial alcoholism, which has been associated with type II alcohol dependence.
http://hdl.handle.net/2268/1017
10.1016/j.alcohol.2009.02.006

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