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- W2166659841 abstract "Neurons in the substantia nigra may be vulnerable to oxidant stress because (a) the metabolism of dopamine generates peroxides, which, in the presence of iron, can lead to the formation of the highly reactive hydroxyl free radical; and (b) neuromelanin within nigral neurons can bind metals such as iron and aluminum and thereby promote the site-specific formation of free radicals. Postmortem studies show increased iron, decreased glutathione, and increased lipid peroxidation in the substantia nigra of patients with Parkinson's disease (PD). Recent studies also report iron and aluminum accumulation within neuromelanin granules of patients with PD. These findings suggest that the substantia nigra in the patient with PD is in a state of oxidant stress and that antioxidant therapy might protect residual dopamine neurons and slow the natural progression of PD. Selective inhibitors of monoamine oxidase type B (MAO-B) have been chosen for study because of their capacity to interfere with the oxidative metabolism of dopamine and so diminish the likelihood that free radicals will be formed. Initial studies demonstrate that the MAO-B inhibitor L-deprenyl (selegiline) delays the development of disability in otherwise untreated patients with early Parkinson's disease. Although the mechanism responsible for these observationsremains unclear, these results are consistent with the possibility that L-deprenyl provides neuroprotective effects." @default.
- W2166659841 created "2016-06-24" @default.
- W2166659841 creator A5091908460 @default.
- W2166659841 date "1993-01-01" @default.
- W2166659841 modified "2023-10-16" @default.
- W2166659841 title "A rationale for monoamine oxidase inhibition as neuroprotective therapy for parkinson's disease" @default.
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- W2166659841 doi "https://doi.org/10.1002/mds.870080503" @default.
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