Wakui M, Fukushi Y, Inomata H
Jpn J Physiol. 1984;34(3):557-60. doi: 10.2170/jjphysiol.34.557.
Electrical and mechanical responses of the guinea-pig vas deferens to exogenous acetylcholine (ACh) were observed by means of a single sucrose-gap method. ACh at various concentrations evoked a contraction consisting of two components. The initial component seemed to be independent of a depolarization, while the second one was dependent on it. All ACh responses were abolished by Ca removal from the external solution. The results suggest the existence of a pathway by which ACh even at low concentrations causes a Ca influx without potential changes.
采用单蔗糖间隙法观察了豚鼠输精管对外源性乙酰胆碱（ACh）的电反应和机械反应。不同浓度的ACh均可引起由两个成分组成的收缩。初始成分似乎与去极化无关，而第二个成分则与之相关。从外部溶液中去除Ca后，所有ACh反应均被消除。结果提示存在一条途径，通过该途径即使低浓度的ACh也可在无电位变化的情况下引起Ca内流。
