Differential effects of benzamides and thioxanthenes on dopamine-elicited accumulation of cyclic AMP in isolated rabbit retina

Pierre Magistretti, M. Schorderet*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Benzamides or thioxanthenes were tested as potential antagonists of the cyclic AMP accumulation induced by 10-4 M dopamine in intact rabbit retinae in vitro in the presence of 5 to 7 mM theophylline. The neuroleptic sulpiride (10-4 M) was found to be totally inactive whereas a substituted benzamide (clebopride) had small but significant antagonist effect at the same concentration. Among thioxanthenes, isomers of cisconfiguration, which are potent neuroleptics, completely inhibit the cyclic AMP accumulation induced by dopamine, in contrast to trans-isomers which had no inhibitory effects. These data would confirm that retina in vitro is another suitable model for screening antipsychotic activity of classical neuroleptics and that the mechanism of action of sulpiride still needs further investigation.

Original languageEnglish (US)
Pages (from-to)189-191
Number of pages3
JournalNaunyn-Schmiedeberg's Archives of Pharmacology
Volume303
Issue number2
DOIs
StatePublished - Jun 1 1978

Keywords

  • Cyclic AMP
  • Dopamine
  • Retina
  • Sulpiride
  • Thioxanthenes

ASJC Scopus subject areas

  • Pharmacology

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