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  • Title: Quantitative analysis of leukocyte mitochondrial DNA deletion in affective disorders.
    Author: Kato T, Winokur G, McMahon FJ, DePaulo JR, Crowe RR.
    Journal: Biol Psychiatry; 1997 Sep 01; 42(5):311-6. PubMed ID: 9276070.
    Abstract:
    Mutations in mitochondrial DNA (mtDNA) are implicated in the pathophysiology of affective disorders. To determine whether the 4977-base-pair deletion in mtDNA is more frequent in affective disorders, we quantitated the concentration of this deletion in leukocyte mtDNA in 34 probands with affective disorders (20 bipolar and 14 unipolar) and 20 controls. We found no significant difference in the quantitative ratio of deletion to wild-type mtDNA between patients and controls. One patient with unipolar depression and 1 of 2 patients previously reported as having a large quantity of the deleted mtDNA did have a markedly high ratio; however, the deletion did not segregate with the disease in these two families. These results do not support a hypothesis that the 4977-base-pair deletion plays an important role in the pathophysiology of affective disorders.
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