Effects of haloperidol on neurotransmitter activity in the rat vas deferens

Hugo F. Miranda, Wayne W. Wolstenholme, Gil M. Moreu, Pedro A. Santiago

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


1. The effects of haloperidol on the responses of the isolated rat vasa deferentia to catecholamines and ACh were studied. 2. Haloperidol produced a competitive antagonism to responses elicited by NA and DA in the vas deferens. 3. The M1 and M2 muscarinic responses to ACh of the vas deferens were potentiated by this neuroleptic. 4. The AChE activity of the vas deferens was significantly depressed by pretreatment with haloperidol. 5. The ability of haloperidol to lower AChE activity was compared with that of neostigmine and it may be due to a similar molecular mechanism. 6. The present results suggest that haloperidol has anti-AChE properties that may be responsible for the potentiation of the responses to ACh. 7. The study indicates that haloperidol has a wider range of pharmacological actions than previously reported.

Original languageEnglish
Pages (from-to)123-127
Number of pages5
JournalGeneral Pharmacology
Issue number1
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Pharmacology


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