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Abstract
Six unrestrained bonnet macaques were each observed after oral administration of four
dosages of yohimbine hydrochloride (0.10, 0.25, 0.50, and 0.75 mg/kg) and a placebo.
Yohimbine significantly increased episodes of motoric activation and affective response
interspersed with intervals of behavioral enervation. Yohimbine scores correlated
closely with baseline levels; there was no dose-response relationship. Response to
oral yohimbine differed in several ways from subcutaneous and intravenous sodium lactate
infusions, including prominent enervative symptoms and the appearance of sexual arousal.
In light of the appearance of cyclic enervative episodes, this study suggests limitations
to primate models of panic disorder utilizing oral yohimbine.
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Article info
Publication history
Received in revised form:
August 7,
1990
Received:
April 5,
1990
Footnotes
☆This work was supported in part by NIMH grant MH 42545, by funds generated through the Phobia & Anxiety Disorders Clinic, and the Department of Psychiatry SUNY/HSCB. Dr. Coplan's participation was supported in part by grant MH30906 and NIMH Clinical Training Grant #T32-MH 18641.
Identification
Copyright
© 1991 Published by Elsevier Inc.