温度对青蛙骨骼肌纤维膜内向整流器及短杆菌肽A诱导通道的影响。
Effect of temperature on the inward rectifier and gramicidin A-induced channels in the membrane of frog skeletal muscle fibres.
作者信息
Caffier G, Shvinka N E
出版信息
Gen Physiol Biophys. 1986 Feb;5(1):47-51.
The conductance of frog skeletal muscle fibres in isotonic K2SO4 solution has been measured. Experiments were carried out under current-clamp conditions using a double sucrose-gap technique. The potassium conductances of the inward rectifier and the gramicidin channel in the same muscle fibre were compared. Potassium conductance of the inward rectifier increased with the temperature, with a value of Q10 1.55 +/- 0.09 (n = 8) under hyperpolarization, and Q10 2.38 +/- 0.23 (n = 6) for the depolarizing stimulus, the difference between Q10 of potassium and gramicidin channels being statistically insignificant.
已测量了青蛙骨骼肌纤维在等渗硫酸钾溶液中的电导。实验是在电流钳制条件下使用双蔗糖间隙技术进行的。比较了同一肌肉纤维中内向整流器和短杆菌肽通道的钾电导。内向整流器的钾电导随温度升高，在超极化时Q10值为1.55±0.09（n = 8），去极化刺激时Q10值为2.38±0.23（n = 6），钾通道和短杆菌肽通道的Q10差异无统计学意义。
Zotero 插件