The sensitivity of hippocampal pyramidal neurons to serotoninin vitro: Effect of prolonged treatment with clorgyline or clomipramine

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Abstract
The sensitivity of hippocampal pyramidal neurons to the depressant action of serotonin was studied in hippocampal slices obtained from rats treated repetitively with clomipramine (10 mg/kg i.p.; 10 days or 4 weeks), with clorgyline (0.3 mg/kg s.c.; 10 days) or with the vehicle. Whereas clorgyline produced a very pronounced subsensitivity to serotonin, a moderate, non-significant reduction in sensitivity was observed with clomipramine. These electrophysiological findings are consistent with previous biochemical studies.