Decreased antioxidant enzyme activity and increased mitochondrial DNA damage in cellular models of Machado-Joseph disease.

Abstract excerpt

Machado-Joseph disease (MJD)/spinocerebellar ataxia type 3 (SCA3) is an autosomal dominant neurodegenerative disorder caused by polyglutamine expansion in the ataxin-3 protein that confers a toxic gain of function. Because of the late onset of the disease, we hypothesize that the accumulated oxidative stress or/and defective antioxidant enzyme ability may be contributory factors in the pathogenesis of MJD. In...

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