Literature DB >> 6098894

Effects of apamin on the outward potassium current of isolated frog skeletal muscle fibres.

C Cognard, F Traoré, D Potreau, G Raymond.   

Abstract

The effect of apamin, a polypeptidic toxin from bee venom which is a specific blocker of certain Ca2+-dependent K+ channels, has been tested (50-100nM) on voltage clamped single skeletal muscle fibres of the frog. The results have shown the existence of an inhibitory effect of the toxin on the slow outward K+ current which suggests the existence of a Ca2+-sensitive component of the slow K+ permeability in the plasma membrane of the frog muscle fibre.

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Year:  1984        PMID： 6098894     DOI： 10.1007/bf00583339

Source DB:  PubMed          Journal:  Pflugers Arch        ISSN： 0031-6768            Impact factor:   3.657


  27 in total

1.  Slow changes in potassium permeability in skeletal muscle.

Authors:  R H Adrian; W K Chandler; A L Hodgkin
Journal:  J Physiol       Date:  1970-07       Impact factor: 5.182

2.  Inward calcium current in twitch muscle fibres of the frog.

Authors:  J A Sanchez; E Stefani
Journal:  J Physiol       Date:  1978-10       Impact factor: 5.182

3.  A calcium dependent inward current in frog skeletal muscle fibres.

Authors:  P R Stanfield
Journal:  Pflugers Arch       Date:  1977-04-25       Impact factor: 3.657

4.  Single channel recordings of Ca2+-activated K+ currents in rat muscle cell culture.

Authors:  B S Pallotta; K L Magleby; J N Barrett
Journal:  Nature       Date:  1981-10-08       Impact factor: 49.962

5.  Ca-dependent K channels with large unitary conductance in chromaffin cell membranes.

Authors:  A Marty
Journal:  Nature       Date:  1981-06-11       Impact factor: 49.962

Review 6.  Tetraethylammonium ions and the potassium permeability of excitable cells.

Authors:  P R Stanfield
Journal:  Rev Physiol Biochem Pharmacol       Date:  1983       Impact factor: 5.545

7.  Ionic currents in mammalian fast skeletal muscle.

Authors:  A Duval; C Léoty
Journal:  J Physiol       Date:  1978-05       Impact factor: 5.182

8.  3,4-diaminopyridine. A potent new potassium channel blocker.

Authors:  G E Kirsch; T Narahashi
Journal:  Biophys J       Date:  1978-06       Impact factor: 4.033

9.  The Ca2+-dependent slow K+ conductance in cultured rat muscle cells: characterization with apamin.

Authors:  M Hugues; H Schmid; G Romey; D Duval; C Frelin; M Lazdunski
Journal:  EMBO J       Date:  1982       Impact factor: 11.598

10.  Gating kinetics of Ca2+-activated K+ channels from rat muscle incorporated into planar lipid bilayers. Evidence for two voltage-dependent Ca2+ binding reactions.

Authors:  E Moczydlowski; R Latorre
Journal:  J Gen Physiol       Date:  1983-10       Impact factor: 4.086
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  7 in total

1.  Bay K 8644 enhances slow inward and outward currents in voltage-clamped frog skeletal muscle fibres.

Authors:  C Cognard; F Traoré; D Potreau; G Raymond
Journal:  Pflugers Arch       Date:  1986-12       Impact factor: 3.657

2.  The apamin-sensitive potassium current in frog skeletal muscle: its dependence on the extracellular calcium and sensitivity to calcium channel blockers.

Authors:  F Traoré; C Cognard; D Potreau; G Raymond
Journal:  Pflugers Arch       Date:  1986-08       Impact factor: 3.657

3.  Characterization of apamin-sensitive Ca(2+)-activated potassium channels in human leukaemic T lymphocytes.

Authors:  C Hanselmann; S Grissmer
Journal:  J Physiol       Date:  1996-11-01       Impact factor: 5.182

4.  The depressing effect of tetracaine and ryanodine on the slow outward current correlated with that of contraction in voltage-clamped frog muscle fibres.

Authors:  M Nasri-Sebdani; F Traoré; C Cognard; D Potreau; J P Poindessault; G Raymond
Journal:  Pflugers Arch       Date:  1990-04       Impact factor: 3.657

5.  Effect of channel blockers on potassium efflux from metabolically exhausted frog skeletal muscle.

Authors:  N A Castle; D G Haylett
Journal:  J Physiol       Date:  1987-02       Impact factor: 5.182

6.  Slow calcium and potassium currents in frog skeletal muscle: their relationship and pharmacologic properties.

Authors:  P T Palade; W Almers
Journal:  Pflugers Arch       Date:  1985-09       Impact factor: 3.657

7.  Actions of quinidine and apamin on after-hyperpolarization of the spike in circular smooth muscle cells of the guinea-pig ileum.

Authors:  K Nakao; R Inoue; K Yamanaka; K Kitamura
Journal:  Naunyn Schmiedebergs Arch Pharmacol       Date:  1986-12       Impact factor: 3.000
  7 in total

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