L-Deprenyl in atypical depressives

Archives of General Psychiatry (Impact Factor: 14.48). 09/1984; 41(8):777-81.
Source: PubMed


We investigated the antidepressant efficacy of l-deprenyl (selegiline), a selective monoamine oxidase B inhibitor (MAOI), in a six-week open trial of 17 patients with atypical depression. Such patients have previously been shown to benefit from nonselective MAOIs such as phenelzine sulfate. Ten patients (59%) responded to l-deprenyl, but nine required dosages above the 10 to 20 mg/day used in previous investigations. l-Deprenyl was superior to six weeks of placebo administered to diagnostically similar patients in a separate double-blind study. In contrast with previous findings with pheneizine, responders to l-deprenyl differed from nonresponders by having lower baseline anxiety ratings. Even at high dosages, there appeared to be fewer side effects with l-deprenyl than with nonselective MAOIs.

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    • "Quitkin and colleagues (1984) tested the effects of selegiline (20 mg/day) on 17 atypical depressives without PD and found that improvement occurred in 60% of the patients. Mann et al (1989) conducted a double-blind placebo-controlled trial testing the effects of selegiline on patients suffering from primary depression. "
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    ABSTRACT: To examine the biochemical effects of 10-30 mg/day L-deprenyl, measurement of 24-hr urinary output of phenylethylamine (PEA), 3-methoxy 4-hydroxy phenylethyleneglycol (MHPG), and L-deprenyl's amphetamine metabolites were carried out before and during the treatment of atypical depressives. Platelet monoamine oxidase (MAO) activity was also assessed. With L-deprenyl 10-30 mg/day, the expected MAO B inhibition occurred, as indicated by significant increase in urinary PEA excretion and virtual disappearance of platelet MAO activity. Twenty-five to 33% of the daily dose of L-deprenyl was recovered as urinary methamphetamine or amphetamine. Excretion of MHPG was significantly decreased with L-deprenyl 10-20 mg/day. Overall, the results suggest that L-deprenyl's antidepressant effects are mediated by some mechanism other than, or in addition to, MAO B inhibition.
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