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Histamine and serotonin independently elicit drinking in the rat
Journal article   Peer reviewed

Histamine and serotonin independently elicit drinking in the rat

F. Scott Kraly, Kenny J. Simansky, Lisa A. Coogan and Marsha S. Trattner
Physiology & behavior, v 34(6), pp 963-967
Jun 1985
PMID: 4059386

Abstract

5-HT Cimetidine Dexbrompheniramine Drinking Histamine Methysergide Serotonin Thirst
Drinking elicited by SC histamine or serotonin (5-HT) was studied in Sprague-Dawley male rats following 0.9% NaCl or combined antagonism of H1 and H2 histamine receptors using dexbrompheniramine (DXB) and cimetidine (C), or following antagonism of 5-HT receptors using methysergide (M). Histaminergic antagonism using IP 1 mg/kg DXB plus 16 mg/kg C abolished drinking elicited by SC 2.5 mg/kg histamine, but it failed to inhibit drinking elicited by the ED50 or by the ED100 for SC 5-HT in the same rats. Serotonergic antagonism using IP 3 mg/kg M abolished drinking elicited by SC 0.63 mg/kg 5-HT, but it failed to inhibit drinking elicited by the ED50 or by the ED100 for SC histamine in the same rats. These findings demonstrate that activation of peripheral 5-HT receptors is not necessary for SC histamine to elicit drinking and that activation of peripheral histamine receptors is not necessary for SC 5-HT to elicit drinking. This demonstrates that histamine and 5-HT activate different receptors to elicit drinking in the rat. The finding that the ED50 for histamine and the ED50 for 5-HT are not additive in their effects on drinking is consistent with the notion that a single mechanism mediates the dipsogenic effects of SC histamine and SC 5-HT in the rat.

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Collaboration types
Domestic collaboration
Web of Science research areas
Behavioral Sciences
Psychology, Biological
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