Schlue W R, Wuttke W
Brain Res. 1983 Jul 4;270(2):368-72. doi: 10.1016/0006-8993(83)90616-9.
The effect of the external K+ concentration on the intracellular K+ activity of neuropile glial cells and of sensory neurons in the central nervous system of the leech (Hirudo medicinalis L.) was determined directly with double-barreled ion-sensitive microelectrodes. As the external K+ concentration was raised, the intracellular K+ activity of the neuropile glial cells increased considerably, and was accompanied by the uptake and/or intracellular synthesis of an, as yet, unidentified substance. In contrast, the intracellular K+ activity of sensory neurons was unchanged when the external K+ concentration was increased. These neurons appeared not to accumulate a second substance.
用双管离子敏感微电极直接测定了外部钾离子浓度对水蛭（医用水蛭）中枢神经系统中神经毡胶质细胞和感觉神经元细胞内钾离子活性的影响。随着外部钾离子浓度升高，神经毡胶质细胞的细胞内钾离子活性显著增加，同时伴随着一种尚未鉴定的物质的摄取和/或细胞内合成。相比之下，当外部钾离子浓度增加时，感觉神经元的细胞内钾离子活性没有变化。这些神经元似乎不会积累第二种物质。
