Inhibition of REM Sleep by Ipsapirone, a 5HT1A Agonist, in Normal Volunteers

Overview

Journal Psychopharmacology (Berl)

Specialty Pharmacology

Date 1994 Dec 1

PMID 7701045

Citations 9

Authors

J C Gillin

W Jernajczyk

S Golshan

M Lardon

S M Stahl

Affiliations

Soon will be listed here.

Abstract

In order to test the hypothesis that serotonergic mechanisms inhibit REM sleep via a 5HT1A receptor, we administered placebo and ipsapirone (10 and 20 mg by mouth 15 min before bedtime) to ten normal volunteers in a double blind fashion. Ipsapirone is a relatively selective 5HT1A receptor agonist. As predicted, ipsapirone prolonged REM latency and Mean Latency to Eye Movements (M-LEM), a measure of time between onset of REM sleep and the first eye movement of the REM period, and REM% at both doses compared with placebo. It also reduced sleep efficiency and total REM sleep time at the highest dose. These results support the hypothesis that systemic stimulation of 5HT1A receptors prolong REM latency and inhibit REM sleep.

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