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- W2029641205 abstract "We have examined the influence of chronic GM-1 treatment (20mg/kg i.m. for 16 consecutive days) on the extent of dopaminergic damage induced by acute l-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration in cynomolgus monkeys using immunohistochemical and neurochemical analysis. The total number of tyrosine hydroxylase-immunoreactive neurons was reduced in different catecholaminergic mesencephalic regions of MPTP-treated monkeys such as substantia nigra pars compacta, mainly in the ventral portion of the nucleus (39% reduction), substantia nigra pars lateralis (31%), peri- and retrorubral catecholaminergic cell group and ventral tegmental area (A8 and A10 respectively, 20% reduction). A similar degree of neuronal loss was observed in the MPTP + GM-1-treated animals, suggesting that GM-1 ganglioside does not exert a protective effect against MPTP-induced dopaminergic cell loss. Moreover, no neurochemical recovery from the striatal dopaminergic depletion induced by MPTP was found after GM-1 treatment. However, the optical density of tyrosine hydroxylase fibers and the cellular tyrosine hydroxylase content were increased in the substantia nigra pars compacta and ventral tegmental area of the MPTP-treated monkeys which received GM-1 ganglioside, compared with animals treated only with the neurotoxin. These results indicate that GM-1 does not protect against cell death but exerts a neurotrophic effect on surviving dopaminergic neurons in the midbrain of MPTP-lesioned monkeys, suggesting that GM-1 ganglioside may be potentially useful for the treatment of neurodegenerative disorders such as Parkinson's disease." @default.
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- W2029641205 date "1993-10-01" @default.
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- W2029641205 title "GM-1 ganglioside promotes the recovery of surviving midbrain dopaminergic neurons in MPTP-treated monkeys" @default.
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- W2029641205 doi "https://doi.org/10.1016/0306-4522(93)90142-3" @default.
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