Effect of glycerin removal on the electrical resistance of isolated muscle fiber in the frog

Fibres isolated from iliofibularis muscles of the frog Rana esculenta were studied under current-clamp conditions with a double sucrose-gap technique. An increase of membrane resistance in muscle fibres (Rm) was demonstrated during the first 10-15 min of glycerol removal in K2SO4 solution. After a 3...

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Bibliographic Details
Published inT͡S︡itologii͡a Vol. 26; no. 5; p. 610
Main Authors Shvinka, N E, Caffier, G
Format Journal Article
LanguageRussian
Published Russia (Federation) 01.05.1984
Subjects
Animals
Electric Conductivity
Glycerol - pharmacology
Hypertonic Solutions
In Vitro Techniques
Isotonic Solutions
Membrane Potentials - drug effects
Muscles - drug effects
Muscles - physiology
Rana esculenta
Sulfates - pharmacology
Time Factors
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Summary:Fibres isolated from iliofibularis muscles of the frog Rana esculenta were studied under current-clamp conditions with a double sucrose-gap technique. An increase of membrane resistance in muscle fibres (Rm) was demonstrated during the first 10-15 min of glycerol removal in K2SO4 solution. After a 30 min treatment in glycerol-containing K2SO4 Rm was 1.40 +/- 0.12 k omega X X cm2. The transfer of muscles from the glycerol-K2SO4 solution to an isotonic K2SO4 solution resulted in a progressive increase in the Rm which after a 15 minutes removal of glycerol reached the mean value of 2.02 +/- 0.22 k omega X cm2. It is suggested that this increase may reflect detubulation of the fibres caused by glycerol removal in muscles.
ISSN:0041-3771