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There is substantial evidence implicating mitochondrial dysfunction and free radical generation in the neurotoxicity of MPTP. Manganese superoxide dismutase (MnSOD) is the primary antioxidant enzyme protecting against superoxide radicals produced within mitochondria. Overexpression of human MnSOD in transgenic mice resulted in increased MnSOD localized to mitochondria in neurons and a 50% increase...
Azulenyl nitrones are a unique class of free radical spin-trapping compounds. We administered both a water-soluble and a lipid-soluble azulenyl nitrone to mice prior to administration of MPTP. Both compounds produced significant neuroprotection against depletions of dopamine and its metabolites measured 1 week after MPTP administration. There were no effects on MPP + levels. These findings...
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