Wakui M, Inomata H
Pflugers Arch. 1985 Jan;403(1):112-4. doi: 10.1007/BF00583291.
The effects of exogenously applied adenosine triphosphate (ATP) on the smooth muscle of guinea-pig vas deferens were studied with the double sucrose-gap method. ATP evoked a membrane depolarization which was associated with a decrease in the size of electrotonic potentials. Conditioning hyperpolarization induced by current application caused an increase in the magnitude of the ATP-induced depolarization; the larger the conditioning hyperpolarization, the greater the ATP-induced depolarization. These results are discussed with respect to the ionic mechanism of the electrical event in response to ATP in this tissue.
采用双蔗糖间隙法研究了外源性三磷酸腺苷(ATP)对豚鼠输精管平滑肌的影响。ATP引起膜去极化,这与电紧张电位大小的降低有关。通过施加电流诱导的条件性超极化导致ATP诱导的去极化幅度增加;条件性超极化越大,ATP诱导的去极化就越大。针对该组织中ATP响应的电事件的离子机制对这些结果进行了讨论。