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Abstract
Mitochondrial dysfunction and oxidative damage are commonly associated with early stage Alzheimer disease (AD). The accumulation of somatic mutations in mitochondrial DNA (mtDNA) has been hypothesized to be a driver of these phenotypes, but the detection of increased mutation loads has been difficult due to a lack of sensitive methods. We used an ultrasensitive next generation sequencing technique to measure the mutation load of the entire mitochondrial genome. Here, we report a significant increase in the mtDNA mutation frequency in the hippocampus of early stage AD, with the cause of these mutations being consistent with replication errors and not oxidative damage. Ann Neurol 2016;80:301-306.
View details for DOI 10.1002/ana.24709
View details for PubMedID 27315116
View details for PubMedCentralID PMC4982791