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PMID: 4341936 Published · ppublish English Journal Article

An attempt at an analysis of the factors determining the time course of the end-plate current. I. The effects of prostigmine and of the ratio of Mg 2+ to Ca 2+ .

The Journal of physiology ·Vol. 224 ·No. 2 ·1972-07-00 ·Pages 317-32

Kordas M

Abstract

1. An attempt was made to analyse the factors which might determine the time course of the falling phase of the end-plate current.2. The end-plate current was measured by ;clamping' the membrane potential during neuromuscular transmission.3. The falling phase of the end-plate current was found to consist of a non-exponential, and an exponential portion, the duration of both of which varies under different experimental conditions.4. The results suggest that the rate constants determining the dissociation of the receptor-mediator complex seem greatly to influence the time course of the end-plate current.

MeSH Terms
Animals Anura Calcium/physiology Cholinesterase Inhibitors Electrophysiology In Vitro Techniques Kinetics Magnesium/physiology Membrane Potentials/drug effects Neostigmine/pharmacology Neuromuscular Junction/drug effects,physiology Rana esculenta Synaptic Transmission Time Factors
Chemicals
Cholinesterase Inhibitors Neostigmine Magnesium Calcium
Authors & Affiliations
1 authors, click to expand affiliations / ORCID
Kordas M
References (19)
19 references, click to expand
  1. A dual effect of calcium ions on neuromuscular facilitation.
    J Physiol. 1968 Mar;195(2):471-80 PMID: 4296698
  2. A kinetic model for the action of xylocaine on receptors for acetylcholine.
    J Gen Physiol. 1968 Jul;52(1):162-80 PMID: 4316946
  3. The nature of the antagonism between calcium and magnesium ions at the neuromuscular junction.
    J Physiol. 1957 Oct 30;138(3):434-44 PMID: 13481883
  4. An analysis of the end-plate potential recorded with an intracellular electrode.
    J Physiol. 1951 Nov 28;115(3):320-70 PMID: 14898516
  5. Analysis of sodium and potassium conductances in the procaine end-plate potential.
    J Physiol. 1966 Apr;183(3):592-606 PMID: 5919558
  6. An electrophysiological approach to drug-receptor mechanisms.
    Comp Biochem Physiol. 1969 Sep 15;30(6):997-1017 PMID: 4900204
  7. Statistical factors involved in neuromuscular facilitation and depression.
    J Physiol. 1954 Jun 28;124(3):574-85 PMID: 13175200
  8. Actions of anti-cholinesterases on endplate potential of frog muscle.
    J Neurophysiol. 1949 Jan;12(1):59-80 PMID: 18122899
  9. The antagonism of Ca2+ by Na+ and other monovalent ions at the frog neuromuscular junction.
    Q J Exp Physiol Cogn Med Sci. 1968 Jul;53(3):239-49 PMID: 5188311
  10. A study of the end-plate potential in sodium deficient solution.
    J Physiol. 1968 Sep;198(1):81-90 PMID: 5677033
  11. The effect of atropine on the frog sartorius neuromuscular junction.
    J Physiol. 1968 Mar;195(2):493-503 PMID: 5647334
  12. Interaction between sodium and calcium ions in the process of transmitter release at the neuromuscular junction.
    J Physiol. 1968 Sep;198(1):203-18 PMID: 16992314
  13. THE EFFECT OF CALCIUM ON ACETYLCHOLINE RELEASE FROM MOTOR NERVE TERMINALS.
    Proc R Soc Lond B Biol Sci. 1965 Feb 16;161:496-503 PMID: 14278410
  14. Hyperpolarization of mammalian motor nerve terminals.
    J Physiol. 1962 Aug;163:115-37 PMID: 14449605
  15. Post-tetanic restoration of neuromuscular transmission blocked by D-tubocurarine.
    J Physiol. 1952 Oct;118(2):216-27 PMID: 13000706
  16. Active phase of frog's end-plate potential.
    J Neurophysiol. 1959 Jul;22(4):395-411 PMID: 13673292
  17. An attempt at an analysis of the factors determining the time course of the end-plate current. II. Temperature.
    J Physiol. 1972 Jul;224(2):333-48 PMID: 4341937
  18. Alteration by xylocaine (lidocaine) and its derivatives of the time course of the end plate potential.
    J Gen Physiol. 1968 Jul;52(1):144-61 PMID: 4316945
  19. Effect of prostigmine on the time course of the end-plate potential in the rat diaphragm.
    J Physiol. 1971 Mar;213(3):533-44 PMID: 5551401
Article Info
Journal
The Journal of physiology
Abbr.
J Physiol
ISSN
0022-3751
Published
1972-07-00
Pages
317-32
Language
English
Region
England
NLM ID
0266262
PMCID
PMC1331492
Subset
IM
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