Pharmacopsychiatry 1998; 31(1): 19-24
DOI: 10.1055/s-2007-979290
Original Papers

© Georg Thieme Verlag Stuttgart · New York

Personality Correlates of +/- Pindolol Induced Decreases in Prolactin

J. Hennig, Annette Kroeger, Bettina Meyer, H. Prochaska, P. Krien, Sonja Huwe, Petra Netter
  • Center for Psychobiology and Behavioral Medicine, Department of Psychology, University of Giessen, FRG
Further Information

Publication History

Publication Date:
20 April 2007 (online)

The present study was conducted to investigate if personality traits can be usefully related to serotonergic vs. dopaminergic action of the 5-HT1a-antagonist +/- pindolol. Forty healthy male volunteers (aged between 20 and 30 years) were randomly assigned to a placebo or a +/- pindolol (30 mg, oral dose) group in a double blind trial. Blood samples were drawn and analyzed for PRL concentrations. In addition, the subjects completed questionnaires on personality. The results indicated that +/- pindolol decreases PRL concentrations depending on personality. While subjects high on impulsivity and related traits (aggression and disinhibition) show lower PRL decreases, well-being and personality traits frequently related to dopaminergic activity were not correlated with changes in PRL. Since reduced (blunted) PRL-responses after 5-HT challenge tests have been reported for impulsives, the present results favor the involvement of primarily serotonergic and probably only secondarily dopaminergic control of +/- pindolol induced PRL decreases.

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