蛔虫体肌细胞的静息膜电位。
The resting membrane potential of the somatic muscle cells of Ascaris lumbricoides.
作者信息
Brading A F, Caldwell P C
出版信息
J Physiol. 1971 Sep;217(3):605-24. doi: 10.1113/jphysiol.1971.sp009588.
Abstract
- The resting membrane potential of Ascaris muscle fibres, which is normally relatively insensitive to ion changes in the medium, has been measured under a wide variety of conditions.2. The results have been interpreted in terms of a form of the constant field equation containing additional terms for the contribution of ions and charged groups other than potassium, sodium and chloride.3. Normally the contribution of the additional terms is large and tends to outweigh the contributions of potassium, sodium and chloride.4. The contribution of the additional terms is considerably reduced in the absence of sodium and in the presence of gamma-amino butyric acid and acetylcholine.5. It is suggested that the additional terms may represent the contribution of an electrogenic active transport mechanism to the factors determining the membrane potential.
摘要
蛔虫肌纤维的静息膜电位通常对介质中的离子变化相对不敏感，已在多种条件下进行了测量。
已根据恒定场方程的一种形式对结果进行了解释，该方程包含除钾、钠和氯之外的离子和带电基团贡献的附加项。
通常，附加项的贡献很大，往往超过钾、钠和氯的贡献。
在没有钠以及存在γ-氨基丁酸和乙酰胆碱的情况下，附加项的贡献会大幅降低。
有人提出，附加项可能代表一种电生主动转运机制对决定膜电位的因素的贡献。
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