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Platelet Monoamine Oxidase B Activity Did Not Predict Destructive Personality Traits or Violent Recidivism: A Prospective Study in Male Forensic Psychiatric Examinees.

  • Christina Gustavson
  • Caroline Wass
  • Jan-Eric Mansson
  • Kaj Blennow
  • Anders Forsman
  • Henrik Anckarsäter
  • Thomas Nilsson
Publiceringsår: 2010
Språk: Engelska
Sidor: 87-96
Publikation/Tidskrift/Serie: Neuropsychobiology
Volym: 61
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: Karger


Aims: This prospective study was designed to replicate previous findings of an association between the platelet monoamine oxidase B (MAO-B) activity and factors of relevance for criminal behaviour in a well-documented clinical study population. Methods: Subjects (n = 77, aged 17-76 years, median 30 years) were recruited among consecutive perpetrators of severe interpersonal violent and/or sexual crimes referred to forensic psychiatric investigation. Participants were extensively investigated by structured psychiatric, psychological and social workups, including state-of-the-art rating instruments and official records, and with laboratory tests including venous blood sampling for determination of MAO-B activity. A subset of 36 individuals had lumbar punctures to measure cerebrospinal fluid concentrations of monoamine neurotransmitter metabolites. Results: Platelet MAO-B activity did not show any significant correlation with assessments of childhood behavioural disorders, substance abuse, or psychosocial adversity, nor with any crime-related factors, such as scores on the Life History of Aggression Scale, the Psychopathy Checklist or recidivistic violent crime. No significant correlation was found between MAO-B and any of the monoamine metabolites. Analyses in subgroups of smokers/non-smokers did not change this overall result. Conclusions: The findings of the present study did not support the use of MAO-B as a biological marker for aggression-related personality traits or as a predictor for violent recidivism among violent offenders.


  • Psychiatry


  • Forensic Psychiatry
  • ISSN: 0302-282X

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