Rekalov V V, Taranenko V M, Shuba M F
Fiziol Zh SSSR Im I M Sechenova. 1985 Jul;71(7):896-903.
The relationship between inward current and contraction was studied with double sucrose gap technique and measurement of contraction of the small muscular bundle in circular muscle from the fundus of guinea pig stomach. In voltage-clamped circular muscle, an inward current observed during depolarizing potential step was sensitive to Cd2+ or low external Ca2+ and had two components: a transient and a steady-state ones. Inactivation of this current was both voltage-dependent and Ca-current-dependent. Transient inward current activated phasic contraction, while the steady-state current activated tonic contraction. The voltage--dependence of the steady-state inward current was estimated with the Hodgkin--Huxley equation.
采用双蔗糖间隙技术和豚鼠胃底环行肌小肌束收缩测量法，研究内向电流与收缩之间的关系。在电压钳制的环行肌中，去极化电位阶跃期间观察到的内向电流对Cd2+或低细胞外Ca2+敏感，并有两个成分：一个瞬态成分和一个稳态成分。该电流的失活既依赖电压又依赖钙电流。瞬态内向电流激活相性收缩，而稳态电流激活紧张性收缩。用霍奇金-赫胥黎方程估算稳态内向电流的电压依赖性。
