Effect of 5-HT1B/D receptor agonist and antagonist administration on motor function in haloperidol and MPTP-treated common marmosets
An interaction between brain serotonergic and dopaminergic systems involving 5-HT(1B) receptors may contribute to motor complications arising from the drug treatment of neurological and psychiatric disorders. This study assessed the effects of treatment with a non-selective 5-HT(1B/D) receptor agoni...
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Published in | Pharmacology, biochemistry and behavior Vol. 79; no. 3; pp. 391 - 400 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
Elsevier Science
01.11.2004
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Subjects | |
Online Access | Get full text |
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Summary: | An interaction between brain serotonergic and dopaminergic systems involving 5-HT(1B) receptors may contribute to motor complications arising from the drug treatment of neurological and psychiatric disorders. This study assessed the effects of treatment with a non-selective 5-HT(1B/D) receptor agonist and a selective 5-HT(1B) receptor antagonist on akinesia induced in marmosets by long-term treatment with haloperidol and on motor disability and l-3, 4-dihydroxyphenylalanine (L-DOPA)-induced dyskinesia in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated marmosets. In marmosets treated chronically with haloperidol, the 5-HT(1B) agonist SKF-99101-H reduced locomotor activity and induced motor disability, whereas the 5-HT(1B) antagonist SB-224289-A had no effect on motor behaviour. Haloperidol administration induced a suppression of locomotor activity which was not reversed by co-administration of either SKF-99101-H or SB-224289-A. In MPTP-treated common marmosets, neither SKF-99101-H nor SB-224289-A induced any significant change in motor function. However, SKF-99101-H inhibited L-DOPA-induced dyskinesia and the reversal of motor deficits whereas SB-224289-A was without effect. The results of this study indicate that the 5-HT(1B) receptor appears not to be an appropriate target for the treatment of Parkinson's disease (PD) or for the control of drug-induced motor complications developed as a tong-term consequence of neuroleptic or L-DOPA treatment. |
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ISSN: | 0091-3057 1873-5177 |
DOI: | 10.1016/j.pbb.2004.07.015 |