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Platelet monoamine oxidase activity and interpersonal violence in male suicide attempters
Umeå University, Faculty of Medicine, Department of Clinical Sciences. The Department of Clinical Neuroscience/ Center for Psychiatric Research, Karolinska Institutet, Sweden.
Umeå University, Faculty of Medicine, Department of Clinical Sciences.
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2018 (English)In: Psychiatry Research, ISSN 0165-1781, E-ISSN 1872-7123, Vol. 260, p. 173-176Article in journal (Refereed) Published
Abstract [en]

Low platelet monoamine oxidase B (MAO-B) activity, proxy of low central serotonergic functions, has been shown to correlate with criminal behavior in adolescents that come from an unfavorable psychosocial environment but not in adolescents from good conditions, indicating a link between environment, MAO-B activity and aggressive behavior. The purpose of this study was to examine the association between MAO-B activity and lifetime interpersonal violence in suicide attempters. The study included a total of 28 suicide attempters (18 men and 10 women). Assessments of childhood exposure to and expressed interpersonal violence during childhood and as an adult were carried out with the Karolinska Interpersonal Violence Scale (KIVS). Platelet MAO-B activity was measured with 2-phenylethylamine (b-PEA) as substrate. Broken down by gender, the correlations between platelet MAO-B activity and both exposure scores to interpersonal violence as a child and expressed lifetime interpersonal violence were significant in male suicide attempters (r = -0.61, p = 0.035; r = - 0.84, p = 0.0005), but not in women. Our finding of significant associations between interpersonal violence and low MAO-B activity need to be replicated in other cohorts of suicide attempters.

Place, publisher, year, edition, pages
2018. Vol. 260, p. 173-176
Keywords [en]
MAO-B, Serotonin, Suicide, Violence, Early life adversity
National Category
Psychiatry
Identifiers
URN: urn:nbn:se:umu:diva-145597DOI: 10.1016/j.psychres.2017.11.057ISI: 000424855300026OAI: oai:DiVA.org:umu-145597DiVA, id: diva2:1192415
Available from: 2018-03-22 Created: 2018-03-22 Last updated: 2018-08-08Bibliographically approved

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Jokinen, JussiKönigsson, Johan

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