Actions of 4-methyl-2-aminopyridine on neuromuscular transmission and contractility of skeletal muscle

N. Kiloh, A. L. Harvey, W. E. Glover

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

4-Methyl-2-aminopyridine (4M2AP) increased responses of isolated rat diaphragm and chick biventer cervicis nerve-muscle preparations to nerve stimulation but depressed responses to direct stimulation. Responses to acetylcholine were also increased while responses to carbachol were depressed. When tested after inhibition of acetylcholinesterase activity with neostigmine the effect of 4M2AP on responses to indirect stimulation was greatly reduced and responses to acetylcholine were depressed. It is concluded that, in contrast to other aminopyridines, 4M2AP facilitates neuromuscular transmission by inhibition of cholinesterase rather than augmenting release of acetylcholine and depresses rather than enhances muscle contractility.

LanguageEnglish
Pages53-57
Number of pages5
JournalEuropean Journal of Pharmacology
Volume70
Issue number1
DOIs
Publication statusPublished - 5 Mar 1981

Fingerprint

Acetylcholine
Skeletal Muscle
Aminopyridines
Neostigmine
Neuromuscular Junction
Cholinesterases
Carbachol
Acetylcholinesterase
Diaphragm
Muscles
2-amino-4-picoline

Keywords

  • 4-Methyl-2-aminopyridine
  • acetylcholine release
  • aminopyridines
  • neuromuscular transmission
  • carbachol
  • tubocurarine chloride
  • biventer cervicis muscle
  • drug response
  • muscle contractility
  • peripheral nervous system

Cite this

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Actions of 4-methyl-2-aminopyridine on neuromuscular transmission and contractility of skeletal muscle. / Kiloh, N.; Harvey, A. L.; Glover, W. E.

In: European Journal of Pharmacology, Vol. 70, No. 1, 05.03.1981, p. 53-57.

Research output: Contribution to journalArticle

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