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Neurosci Lett. 1996 Aug 23;214(2-3):107-10.

Antidepressant-like effects of p-synephrine in mouse models of immobility tests.

Author information

1
Department of Pharmacology, College of Medicine, Hallym University, Chunchon, Kangwon-Do, South Korea. dksong@sun.hallym.ac.kr

Abstract

We studied the effects of p-synephrine on the immobility behaviors and on the spontaneous motor activity in mice. p-Synephrine at oral doses from 1 to 10 mg/kg significantly decreased the duration of immobility in the tail suspension test and the forced swimming test in mice. At 30 mg/kg, the duration of immobility was returned to control values in both tests. Subcutaneous administration of prazosin hydrochloride (62.5 micrograms/kg), an alpha 1 adrenoceptor antagonist, blocked the p-synephrine (3 mg/kg)-induced decrease in immobility in the tail suspension test. p-Synephrine did not change the spontaneous motor activity at oral doses from 0.3 to 10 mg/kg. These results suggest that p-synephrine elicits an antidepressant-like activity in mouse models of immobility tests, through the stimulation of alpha 1 adrenoceptors.

PMID:
8878095
DOI:
10.1016/0304-3940(96)12895-0
[Indexed for MEDLINE]

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