Post-training dopamine receptor agonists and antagonists affect memory storage in mice irrespective of their selectivity for D1 or D2 receptors

Claudio Castellano, Vincenzo Cestari, Simona Cabib, Stefano Puglisi-Allegra

Research output: Contribution to journalArticle

Abstract

Post-training administration of the selective D1 and D2 agonists SKF 38393 and LY 171555 dose-dependently facilitated retention of an inhibitory avoidance response in mice, while the selective D1 or D2 antagonists SCH 23390 and (-)sulpiride produced an impairment of retention. These effects are not to be ascribed to a nonspecific action of the drugs on retention performance, as the latencies during the retention test of those mice that had not received a footshock during the training were not increased by the post-training drug administration. The effects on retention performance induced by DA agonists and antagonists seem to be due to an effect on memory consolidation, since they have been observed when drugs were given at short, but not at long, periods of time after training. These results showing a similar role of D1 and D2 receptor types on memory storage appear not to be consistent with a body of neuropharmacological, neurophysiological, and behavioral evidence pointing to a different functional role of these types of DA receptors. This discrepancy is discussed in terms of possible involvement of different brain systems, peripheral systems, or possible second messenger processes activated by the two receptor types and leading to similar effects on memory processes.

Original languageEnglish
Pages (from-to)283-291
Number of pages9
JournalBehavioral and Neural Biology
Volume56
Issue number3
DOIs
Publication statusPublished - 1991

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Dopamine Antagonists
Dopamine Agonists
4,4a,5,6,7,8,8a,9-octahydro-5-propyl-1H-pyrzolo(3,4-g)quinoline
Pharmaceutical Preparations
2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine
Sulpiride
Second Messenger Systems
Retention (Psychology)
Brain

ASJC Scopus subject areas

  • Physiology

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Post-training dopamine receptor agonists and antagonists affect memory storage in mice irrespective of their selectivity for D1 or D2 receptors. / Castellano, Claudio; Cestari, Vincenzo; Cabib, Simona; Puglisi-Allegra, Stefano.

In: Behavioral and Neural Biology, Vol. 56, No. 3, 1991, p. 283-291.

Research output: Contribution to journalArticle

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