Abstract
The effect of cisapride (R51619) on intrinsic cholinergic nerve activity of human sigmoid taenia coli muscle strips (taenia) was assessed using radiolabelling techniques. Taeniae previously incubated with [3H]-choline were exposed to cisapride (0.41 and 4.1 microM), placebo solution and electrical field stimulation (EFS; 10 Hz, 1 ms, 200 mA for 480 pulses). Cisapride did not affect unstimulated (basal) release of radioactive material nor the release evoked by EFS. It was concluded that cisapride did not demonstrate a cholinomimetic effect in human sigmoid taenia coli muscle strips.
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