Effects of the Calcium Channel Activator Bay K 8644 on General Anaesthetic Potency in Mice

Overview

Journal Br J Pharmacol

Publisher Wiley

Specialty Pharmacology

Date 1988 Jun 1

PMID 2456117

Citations 8

Authors

S J Dolin

M J Halsey

H J Little

Affiliations

Soon will be listed here.

Abstract

1. The effects of the calcium channel activator, Bay K 8644, on the anaesthetic potencies of ethanol, argon and pentobarbitone were examined in mice. 2. Bay K 8644, at 1 mg kg-1 i.p., significantly antagonized the general anaesthetic potencies of ethanol and argon, but at 5 and 10 mg kg-1 this compound increased the general anaesthetic potency of these drugs. 3. At doses of 1, 5 and 10 mg kg-1 Bay K 8644 antagonized the anaesthetic effects of pentobarbitone. Bay K 8644, at the highest dose used, did not alter the brain concentrations of pentobarbitone or the blood concentrations of ethanol. 5. The effects of the different doses of Bay K 8644 on the actions of ethanol and of argon are compatible with the known partial agonist properties of this compound on calcium channels in vitro. 6. The actions of Bay K 8644 on the anaesthetic effects of pentobarbitone suggests that specific interactions may be involved in the anaesthetic actions of this compound.

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