Abstract
This paper summarizes recent research on mitochondrial DNA (mtDNA)—which might be described as the ‘other, forgotten genome’. Recent studies suggest the possible pathophysiological significance of mtDNA in schizophrenia and neurodegenerative and mood disorders. Decreased activity of the mitochondrial electron transport chain has been implicated in both Parkinson's and Alzheimer's disease and while age-related accumulation of mtDNA deletions has been suggested as a possible cause, there is no concrete evidence that particular mtDNA polymorphisms are responsible. In schizophrenia, the activity and/or mRNA expression of complex IV are involved, but the direction of the alteration is not the same and there is no evidence linking schizophrenia with mtDNA. In bipolar disorder, there is some evidence of parent-of-origin effects and association with mtDNA polymorphisms but further investigation is needed to elucidate the role of mtDNA in mental disorders.
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Kato, T. The other, forgotten genome: mitochondrial DNA and mental disorders. Mol Psychiatry 6, 625–633 (2001). https://doi.org/10.1038/sj.mp.4000926
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DOI: https://doi.org/10.1038/sj.mp.4000926
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