TY - JOUR
T1 - Preliminary evidence for associations of CHRM2 with substance use and disinhibition in adolescence
AU - Hendershot, Christian S.
AU - Bryan, Angela D.
AU - Feldstein Ewing, Sarah W.
AU - Claus, Eric D.
AU - Hutchison, Kent E.
N1 - Funding Information:
Acknowledgements This research was supported by grants R01DA019139 from the National Institute on Drug Abuse and F32AA018629 from the National Institute on Alcohol Abuse and Alcoholism. The authors thank Marilee Morgan and the Neurogenetics Core Lab at the Mind Research Network for conducting genotyping. The authors have no conflicts of interest to declare.
PY - 2011/6
Y1 - 2011/6
N2 - Evidence for shared heritable influences across domains of substance use suggests that some genetic variants influence broad risk for externalizing behaviors. Theories of externalizing psychopathology also suggest that genetic liability for substance use manifests as temperamental risk factors, particularly those related to behavioral disinhibition, during adolescence. The cholinergic muscarinic receptor 2 gene (CHRM2) is a promising candidate for studying genetic influences on broad-based risk for externalizing traits. This study examined a candidate CHRM2 polymorphism (rs1455858) in relation to substance use and personality measures of disinhibition in a sample of high-risk adolescents (n=124). Bivariate analyses and structural equation modeling (SEM) evaluated associations of rs1455858 with measures of drug involvement (alcohol, tobacco and marijuana) and disinhibition (indexed by impulsivity and sensation seeking scores). Bivariate analyses showed significant associations of CHRM2 with several behavioral phenotypes. In SEM analyses CHRM2 related significantly to latent measures of substance use and disinhibition; additionally, disinhibition mediated the association of CHRM2 with substance use. These results suggest that CHRM2 variants are potentially relevant for adolescent substance use and that temperamental risk factors could contribute to these associations.
AB - Evidence for shared heritable influences across domains of substance use suggests that some genetic variants influence broad risk for externalizing behaviors. Theories of externalizing psychopathology also suggest that genetic liability for substance use manifests as temperamental risk factors, particularly those related to behavioral disinhibition, during adolescence. The cholinergic muscarinic receptor 2 gene (CHRM2) is a promising candidate for studying genetic influences on broad-based risk for externalizing traits. This study examined a candidate CHRM2 polymorphism (rs1455858) in relation to substance use and personality measures of disinhibition in a sample of high-risk adolescents (n=124). Bivariate analyses and structural equation modeling (SEM) evaluated associations of rs1455858 with measures of drug involvement (alcohol, tobacco and marijuana) and disinhibition (indexed by impulsivity and sensation seeking scores). Bivariate analyses showed significant associations of CHRM2 with several behavioral phenotypes. In SEM analyses CHRM2 related significantly to latent measures of substance use and disinhibition; additionally, disinhibition mediated the association of CHRM2 with substance use. These results suggest that CHRM2 variants are potentially relevant for adolescent substance use and that temperamental risk factors could contribute to these associations.
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U2 - 10.1007/s10802-011-9511-9
DO - 10.1007/s10802-011-9511-9
M3 - Article
C2 - 21494862
AN - SCOPUS:79959863727
SN - 0091-0627
VL - 39
SP - 671
EP - 681
JO - Journal of Abnormal Child Psychology
JF - Journal of Abnormal Child Psychology
IS - 5
ER -
