Levodopa-induced dyskinesia and response fluctuations in primates rendered parkinsonian with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP).


Six non-human primates received doses of MPTP sufficient to produce a severe parkinsonian syndrome. Levodopa therapy reversed parkinsonian features in all animals, but resulted in dose-dependent choreoathetoid movements of the lower limbs of 3, together with akathisia and dystonia in 2. 'End-of-dose deterioration' was common to all animals, although 'on-off… (More)


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