Contrasting actions of acute or chronic paroxetine and fluvoxamine on morphine withdrawal-induced place conditioning

Rafieiankopaei, M., Gray, A. M., Spencer, P. S. J. and Sewell, Robert David Edmund 1995. Contrasting actions of acute or chronic paroxetine and fluvoxamine on morphine withdrawal-induced place conditioning. European Journal of Pharmacology 275 (2) , pp. 185-189. 10.1016/0014-2999(94)00770-8

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Abstract

The acute and chronic effects of paroxetine and fluvoxamine on naloxone withdrawal-induced place aversion in morphine dependent rats were investigated. Acutely administered fluvoxamine (25 mg/kg s.c. given 30 min prior to naloxone withdrawal pairing) and chronic daily paroxetine (10 mg/kg s.c.) coadministration with a morphine induction protocol, both attenuated morphine withdrawal place aversion. Conversely, acutely administered paroxetine (up to 25 mg/kg s.c.) or chronic daily fluvoxamine (10 mg/kg s.c.) coadministration with morphine did not modify subsequent withdrawal place aversion. Previous radioligand binding studies indicate that fluvoxamine has opioid-displacing properties. It is suggested therefore that acute fluvoxamine may have decreased withdrawal aversion, probably through serotonin and also, in part, via an opioid-like mechanism whereas chronic paroxetine decreased withdrawal aversion by a serotonergic mechanism, but it is not clear whether opioid systems play any role in the action of paroxetine.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Pharmacy
Subjects:	R Medicine > RS Pharmacy and materia medica
Publisher:	Elsevier
ISSN:	0014-2999
Last Modified:	04 Jun 2017 07:57
URI:	https://orca.cardiff.ac.uk/id/eprint/70472

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