Effects of imipramine and lithium on wet-dog shakes mediated by the 5-HT2A receptor in ACTH-treated rats

Yoshihisa Kitamura, Hiroaki Araki, Katsuya Suemaru, Yutaka Gomita

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We examined the influence of imipramine and lithium on wet-dog shakes induced by the (±)-DOI, 5-HT2A receptor agonist in adrenocorticotropic hormone (ACTH)-treated rats. The administration of imipramine for 14 days decreased the (±)-DOI-induced wet-dog shakes response; chronic administration of lithium for 14 days, however, had no effect. Chronic ACTH (100 μg/rat sc) treatment increased the wet-dog shake response induced by (±)-DOI. This effect of ACTH for 14 days, increasing the (±)-DOI-induced wet-dog shakes, was not inhibited by a 14-day administration of imipramine. Chronic coadministration of imipramine and lithium, lasting 14 days, decreased the wet-dog shakes response induced by (±)-DOI in rats treated with ACTH for 14 days. These findings indicate that lithium inhibits the hyperfunction of the 5-HT2A receptor in rats treated with ACTH when coadministered with imipramine.

Original languageEnglish
Pages (from-to)397-402
Number of pages6
JournalPharmacology Biochemistry and Behavior
Volume72
Issue number1-2
DOIs
Publication statusPublished - Apr 6 2002

Keywords

  • 5-HT receptor
  • ACTH
  • Imipramine
  • Lithium
  • Wet-dog shake

ASJC Scopus subject areas

  • Biochemistry
  • Toxicology
  • Pharmacology
  • Clinical Biochemistry
  • Biological Psychiatry
  • Behavioral Neuroscience

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