5-HT response of rat hippocampal pyramidal cell bodies
- 1 July 1992
- journal article
- research article
- Published by Wolters Kluwer Health in NeuroReport
- Vol. 3 (7) , 633-636
- https://doi.org/10.1097/00001756-199207000-00023
Abstract
Serotonin (5-HT) responses of pyramidal neurones freshly dissociated from rat ventral hippocampal CA1 region were investigated by using nystatin-perforated whole-cell recording. These dissociated neurones lack most of the dendrites and axons. Application of nanomolar concentrations of 5-HT induced outward current with an increase of membrane conductance at a holding potential (Vn) of —40mV. The current was mimicked by α-methyl-5-HT (5-HT2 receptor family agonist), but not by 8-OH-DPAT (5-HT1 receptor family agonist). Ketanserin (5-HT2 receptor family antagonist) and spiperone (5-HT1A and 5-HT2 receptor family antagonist) blocked the current in a concentration dependent manner. These results suggests that 5-HT-induced outward current is mediated by the activation of 5-HT2 receptor family in the cell bodies of hippocampal pyramidal neurones.Keywords
This publication has 0 references indexed in Scilit: