Akasu T, Ohta Y, Koketsu K
Experientia. 1978 Apr 15;34(4):488-90. doi: 10.1007/BF01935944.
Electrogenic Na+ pump currents during K+-activated hyperpolarizations of bullfrog atrium muscle fibres are increased by adrenaline. The log dose-response relation between these currents and activating K+ concentrations is expressed by a sigmoidal curve, which is shifted in parallel to the left by adrenaline. It is suggested that adrenaline increases the rate of Na+ extrusion without increasing the Na/K coupling ratio and total number of pumping sites.
肾上腺素可增加牛蛙心房肌纤维钾离子激活超极化过程中的生电钠泵电流。这些电流与激活钾离子浓度之间的对数剂量-反应关系由一条S形曲线表示，该曲线在肾上腺素作用下平行向左移动。这表明肾上腺素增加了钠的外排速率，而不增加钠/钾偶联比率和泵位点的总数。
