Some histochemical and electrophysiological effects of isatin

Qualitative and semiquantitative histochemical investigations of acetylcholinesterase after a single or repeated administration of isatin, 160 mg/kg ip once or daily for 8 consecutive days have revealed a significant decrease of the histochemical reaction for acetylcholinesterase in chronically treated rats. The cholinergic effect of isatin was tested in the electrophysiological experiment after a single dose of 160 mg/kg isatin and was partially antagonized by atropine.