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Abstract 


1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) produces a profound parkinsonian state when systemically administered in monkeys and man. Previous studies have shown MPTP to be toxic to only the dopamine (DA) cells in the substantia nigra pars compacta and not to other catecholamine (CA)-containing cells. The data presented here suggest that MPTP also has a specific neurotoxic effect on the DA-containing cells of the ventral tegmental area and the noradrenaline-containing cells of the locus coeruleus in macaque monkeys with a moderate-to-severe parkinsonian syndrome. The results suggest that MPTP-induced parkinsonism in the monkey more closely replicates the neurochemical changes seen in idiopathic Parkinson's disease than previously thought.

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