NMDA receptors in the nucleus accumbens modulate intravenous cocaine but not heroin self-administration in the rat - PubMed (original) (raw)

Comparative Study

. 1992 Oct 30;594(2):327-30.

doi: 10.1016/0006-8993(92)91145-5.

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Comparative Study

NMDA receptors in the nucleus accumbens modulate intravenous cocaine but not heroin self-administration in the rat

L Pulvirenti et al. Brain Res. 1992.

Abstract

The role of endogenous glutamate neurotransmission within the nucleus accumbens in the modulation of intravenous (i.v.) cocaine and heroin self-administration in rats was analyzed. APV (2-amino-5-phosphonovaleric acid), a blocker of glutamate receptors of the N-methyl-D-aspartate (NMDA) type, was microinfused within the nucleus accumbens of the ventral striatum of rats trained to lever press for i.v. cocaine or heroin self-administration. APV, at the dose of 1.5 and 3.0 micrograms/side, reduced the rewarding value of cocaine while it left heroin self-administration unaffected. These results suggest that integrity of NMDA receptor function within the nucleus accumbens may be of importance for the maintenance of i.v. cocaine, but not heroin self-administration in rats.

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