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[The effect of tetraethylammonium and the decrease in the extracellular chloride concentration on membrane depolarization and contraction of skeletal muscle fiber induced by a hyperpotassium solution].

G Brûlé·G Haudecoeur
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Abstract

1.--The tetraethylammonium (TEA) effects on K+ contracture and membrane depolarization are compared in both crab and frog skeletal muscle fibres. 2.--The mechanical tension of the contracture is reduced by the TEA in frog skeletal muscle fibre; it is increased in crab skeletal fibre. 3.--When no mechanical phenomenon is observed in frog skeletal muscle, the amplitude and the velocity of membrane depolarization induced by an increase of outward K+ concentration is reduced by the TEA. These effects are in opposition in crab muscle fibre. 4.--In crab muscle fibre, the results obtained tend to show that the C1-ions are not distributed on each side of the membrane according to Donnan equilibrium.

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AnimalsAnuraBrachyuraCell MembraneChloridesMuscle ContractionPotassiumTetraethylammonium CompoundsEnglish AbstractJournal Article

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G Brûlé, G Haudecoeur. 1982. [The effect of tetraethylammonium and the decrease in the extracellular chloride concentration on membrane depolarization and contraction of skeletal muscle fiber induced by a hyperpotassium solution].. https://doi.org/10.3109/13813458209070565

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