alexa Somatic mitochondrial DNA mutations in early Parkinson and incidental Lewy body disease.
Neurology

Neurology

Journal of Alzheimers Disease & Parkinsonism

Author(s): Lin MT, CantutiCastelvetri I, Zheng K, Jackson KE, Tan YB,

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Abstract Somatic mutations in mitochondrial DNA (mtDNA) are hypothesized to play a role in Parkinson disease (PD), but large increases in mtDNA mutations have not previously been found in PD, potentially because neurons with high mutation levels degenerate and thus are absent in late stage tissue. To address this issue, we studied early stage PD cases and cases of incidental Lewy body disease (ILBD), which is thought to represent presymptomatic PD. We show for the first time that mtDNA mutation levels in substantia nigra neurons are significantly elevated in this group of early PD and ILBD cases. Copyright © 2012 American Neurological Association.
This article was published in Ann Neurol and referenced in Journal of Alzheimers Disease & Parkinsonism

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