Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Acta Psychiatr Scand. 2011 Jun;123(6):485-92. doi: 10.1111/j.1600-0447.2010.01665.x. Epub 2011 Jan 14.

Cannabis use and age at onset of psychosis: further evidence of interaction with COMT Val158Met polymorphism.

Author information

  • 1Anthropology Unit, Department of Animal Biology, Faculty of Biology, University of Barcelona, Spain.

Abstract

OBJECTIVE:

To examine, in a sample of young psychiatric patients, (n = 157, mean age 17.01 years (SD = 3.6)) whether i) age at first cannabis use and age at emergence of psychiatric disorders are related and ii) such a relationship is modulated by the Val158Met polymorphism in the COMT gene.

METHOD:

Cannabis use profiles and COMT Val158Met genotypes were obtained from 80 inpatients with schizophrenia-spectrum disorders and 77 inpatients with other non-psychotic disorders.

RESULTS:

First, age at first cannabis use correlates with age at onset in both schizophrenia-spectrum and other psychiatric disorder groups: those who started using cannabis earlier had an earlier age at onset of psychiatric disorders. Second, the distribution of the Val158Met genotypes was not different either between diagnosis groups or between cannabis users and non-users. Third, an interaction between Val158Met genotypes and cannabis use was observed specifically on age at emergence of psychotic disorders, with Val/Val genotype carriers showing an earlier age at onset than Met carriers.

CONCLUSION:

Our results suggest the importance of brain maturation timing in which exposure to cannabis occurs. The COMT Val158Met genotype seems to modulate the association between cannabis and age at onset of psychotic disorders. These results are consistent with previous studies.

© 2011 John Wiley & Sons A/S.

PMID:
21231925
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Blackwell Publishing
    Loading ...
    Write to the Help Desk