Effect of a selective glutamate antagonist on l-dopa-induced dyskinesias in drug-naive parkinsonian monkeys

Autor: Abdallah Hadj Tahar, Laurent Grégoire, Aurélie Darré, Nancy Bélanger, Leonard Meltzer, Paul J Bédard
Jazyk: angličtina
Rok vydání: 2004
Předmět:
Zdroj: Neurobiology of Disease, Vol 15, Iss 2, Pp 171-176 (2004)
Druh dokumentu: article
ISSN: 1095-953X
DOI: 10.1016/j.nbd.2003.10.007
Popis: Alterations of striatal glutamate receptors are believed to be responsible, at least in part, for the pathogenesis of l-dopa-induced dyskinesias (LID). To evaluate whether co-administration of CI-1041, a novel NMDA receptor antagonist selective for the NR1A/NR2B subtype, with l-dopa might prevent the appearance of this side effect, eight de novo parkinsonian monkeys were treated chronically orally with either l-dopa alone or l-dopa plus CI-1041 (n= 4 for each group). After 4 weeks of treatment with l-dopa alone, all four animals developed moderate dyskinesias either choreic or dystonic in nature. CI-1041 co-treatment completely prevented the induction of dyskinesias in three animals and only one monkey developed mild dyskinesias at the end of the fourth week of treatment in the l-dopa + CI-1041 group. The magnitude and duration of the antiparkinsonian action of l-dopa was similar in both groups. These results suggest that selective NMDA receptor antagonism may be interesting for managing LID in Parkinson's disease patients.
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