[无钠培养基对青蛙骨骼肌纤维钙依赖性钾通透性的阻断作用]
[Blocking calcium-dependent potassium in permeability of skeletal muscle fibers in the frog by a sodium-free medium].
作者信息
Nasri-Sebdani M, Cognard C, Potreau D, Raymond G
机构信息
Laboratoire de Physiologie Générale, U.A. C.N.R.S. n. 290, U.F.R. Sciences, Poitiers.
出版信息
C R Acad Sci III. 1988;307(6):357-62.
PMID:3144422
Abstract
In voltage-clamped frog muscle fibres, the total or partial substitution of NaCl by LiCl does not alter the calcium-dependent slow outward potassium current. In contrast, an equimolar substitution of NaCl by choline-Cl (+atropine) or trisCl induces a rapid and reversible blockage of the current.
摘要
在电压钳制的青蛙肌肉纤维中，用LiCl全部或部分替代NaCl不会改变钙依赖性外向缓慢钾电流。相反，用氯化胆碱（+阿托品）或三羟甲基氨基甲烷氯化物等摩尔替代NaCl会导致电流迅速且可逆地阻断。
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