The selective dopamine D1 receptor agonist, SKF 81297, stimulates motor behaviour of MPTP-lesioned monkeys

R J Vermeulen, B Drukarch, M C Sahadat, C Goosen, E C Wolters, J C Stoof

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The alleged selective, high efficacy dopamine D1 receptor agonist, SKF 81297 (0.05-0.3 mg/kg i.m.), induced rotational behaviour away from the lesion and stimulated use of the dominant right hand in unilaterally (left side) 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-lesioned rhesus monkeys (Macaca mulatta). The effects of SKF 81297 were completely blocked by the dopamine D1 receptor antagonist, SCH 23390 (0.05 mg/kg), but not by the dopamine D2 receptor antagonist, remoxipride (1 mg/kg), and were similar to those induced by the selective dopamine D2 agonist, LY 171555 (0.01 mg/kg). These results suggest a functional stimulatory role for the dopamine D1 receptor on motor behaviour in a non-human primate model of Parkinson's disease when stimulated with a high efficacy selective dopamine D1 receptor agonist.

Original languageEnglish
Pages (from-to)143-7
Number of pages5
JournalEuropean Journal of Pharmacology
Issue number1
Publication statusPublished - 22 Apr 1993

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