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Effects of a Dopamine Agonist Piribedil in Depressed PatientsRelationship of Pretreatment Homovanillic Acid to Antidepressant Response
Robert M. Post, MD;
Robert H. Gerner, MD;
John S. Carman, MD;
J. Christian Gillin, MD;
David C. Jimerson, MD;
Frederick K. Goodwin, MD;
William E. Bunney, Jr, MD
Arch Gen Psychiatry. 1978;35(5):609-615.
Abstract
• Piribedil, a compound that stimulates dopamine receptors in a relatively specific fashion, was administered to 11 hospitalized depressed patients. The dopamine agonist significantly decreased rapid eye movement (REM) sleep and percent REM sleep and increased REM latency. Piribedil decreased the probenecid-induced accumulation of the dopamine metabolite homovanillic acid (HVA) in CSF. A range of mild to moderate antidepressant effects was noted; one patient worsened and one developed recurrent manic episodes. The degree of improvement in depression was negatively correlated with pretreatment values of HVA in CSF (r = —.66, p <.05). These data suggest that the heterogeneity of clinical response may be related to biological differences in depressed patients and that those with low initial dopaminergic function respond best to increased dopamine receptor stimulation.
Author Affiliations
From the Biological Psychiatry Branch (Drs Post, Gerner, Carman, Gillin, Jimerson, and Bunney), and the Clinical Psychobiology Branch (Dr Goodwin), National Institute of Mental Health, Bethesda, Md.
Footnotes
Accepted for publication Nov 22, 1977.
Reprint requests to National Institutes of Health, Bldg 10, Room 3S239, 9000 Rockville Pike, Bethesda, MD 20014 (Dr Post).
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