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  • Title: N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced parkinsonism in the monkey: neurochemical pathology and regional brain metabolism.
    Author: Mitchell IJ, Cross AJ, Sambrook MA, Crossman AR.
    Journal: J Neural Transm Suppl; 1986; 20():41-6. PubMed ID: 3462325.
    Abstract:
    Systemic administration of the neurotoxin N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) to macaque monkeys induced a profound parkinsonian state marked by hypokinesia/bradykinesia, rigidity and tremor. Postmortem studies revealed severe pathological changes in the substantia nigra, pars compacta and in the ventral tegmental area. The levels of dopamine and its major metabolites were reduced by about 90% in the neostriatum, including the nucleus accumbens, when compared to controls. In one animal, the locus coeruleus showed severe pathological changes in association with a reduction in forebrain noradrenaline. 2-deoxyglucose uptake studies suggested that in experimental parkinsonism there if a profound change in the activity of the striatopallidal pathway, but not necessarily in the striatonigral pathway.
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