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Mitochondria are the vital organelles that deliver energy to all cells and mitochondrial damage has been found, for example, in brain imaging of bipolar patients and in post-mortem brains. Roughly 20% of patients with mitochondrial disease also have bipolar disorder, a major psychiatric disease characterized by manic and depressive episodes. Altered serotonin functioning, on the other hand, seems to be involved in bipolar disorder because drugs that target serotonin levels can effectively treat the condition. "Our study suggests that mitochondrial dysfunction can alter activity of serotonergic neurons in bipolar disorder, and this is the first time these two lines of evidence have been linked," says Tadafumi Kato, research group leader at CBS. The research was published on June 8 in the journal Molecular Psychiatry.
The study started by identifying ANT1 mutations in patients with bipolar disorder. Kato and colleagues then looked at mice lacking the ANT1 gene in the brain only. Compared...
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