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Arch Gen Psychiatry. 2012 Nov;69(11):1123-30.

Toxoplasma gondii infection and self-directed violence in mothers.

Author information

  • 1Department of Economics and Business, National Centre for Register-Based Research, Aarhus University, Denmark. mgp@ncrr.dk

Abstract

CONTEXT:

Two studies based on clinical samples have found an association between Toxoplasma gondii infection and history of suicide attempt. To our knowledge, these findings have never been replicated in a prospective cohort study.

OBJECTIVE:

To examine whether T gondii–infected mothers have an increased risk of self-directed violence, violent suicide attempts, and suicide and whether the risk depends on the level of T gondii IgG antibodies.

DESIGN:

Register-based prospective cohort study. Women were followed up from the date of delivery, 1992 to 1995 until 2006.

SETTING:

Denmark.

PARTICIPANTS:

A cohort of 45 788 women born in Denmark whose level of Toxoplasma-specific IgG antibodies was measured in connection with child birth between 1992 and 1995.

MAIN OUTCOME MEASURES:

Incidence rates of self-directed violence, violent suicide attempts, and suicide in relation to T gondii seropositivity and serointensity.

RESULTS:

T gondii–infected mothers had a relative risk of self-directed violence of 1.53 (95% CI, 1.27-1.85) compared with noninfected mothers, and the risk seemed to increase with increasing IgG antibody level. For violent suicide attempts, the relative risk was 1.81 (95% CI, 1.13-2.84) and for suicide, 2.05 (95% CI, 0.78-5.20). A similar association was found for repetition of self-directed violence, with a relative risk of 1.54 (95% CI, 0.98-2.39).

CONCLUSION:

Women with a T gondii infection have an increased risk of self-directed violence.

PMID:
22752117
[PubMed - indexed for MEDLINE]
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