Holmgren B, Urbá-Holmgren R, Dem B. Blockade of both pilocarpine and amphetamine-induced head-shaking with dopamine receptor antagonists.
Pharmacol Biochem Behav 1978;
8:767-9. [PMID:
693563 DOI:
10.1016/0091-3057(78)90281-2]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The range of central dopaminergic mechanisms involved in both d-amphetamine- and pilocarpine-induced head-shaking was studied in 7--9 days old rats by means of two DA antagonists: pimozide and spiroperidol. Both blocking agents exert their effects on H--S following dose-response curves which are similar, whatever the drug used to evoke head-shaking. A complete blocking effect on H--S is reached with pimozide at a dose of 2 mg kg-1; with spiroperidol at 0.1 mg kg-1 (for pilocarpine-induced H--S) and at 0.2 mg kg-1 (for H--S evoked by d-amphetamine). These results, together with those previously reported, suggest that dopaminergic and cholinergic facilitatory influences on H--S seem to be organized in series.
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