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Lithium and the Interplay Between Telomeres and Mitochondria in Bipolar Disorder

Authors
  • Lundberg, Martin1, 2
  • Millischer, Vincent1, 2
  • Backlund, Lena1, 2
  • Martinsson, Lina3
  • Stenvinkel, Peter4
  • Sellgren, Carl M.3, 5
  • Lavebratt, Catharina1, 2
  • Schalling, Martin1, 2
  • 1 Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm , (Sweden)
  • 2 Center for Molecular Medicine, Karolinska University Hospital, Stockholm , (Sweden)
  • 3 Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Healthcare Services, Region Stockholm, Stockholm , (Sweden)
  • 4 Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm , (Sweden)
  • 5 Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm , (Sweden)
Type
Published Article
Journal
Frontiers in Psychiatry
Publisher
Frontiers Media SA
Publication Date
Sep 29, 2020
Volume
11
Identifiers
DOI: 10.3389/fpsyt.2020.586083
PMID: 33132941
PMCID: PMC7553080
Source
PubMed Central
Keywords
License
Unknown

Abstract

Bipolar disorder is a severe psychiatric disorder which affects more than 1% of the world’s population and is a leading cause of disability among young people. For the past 50 years, lithium has been the drug of choice for maintenance treatment of bipolar disorder due to its potent ability to prevent both manic and depressive episodes as well as suicide. However, though lithium has been associated with a multitude of effects within different cellular pathways and biological systems, its specific mechanism of action in stabilizing mood remains largely elusive. Mitochondrial dysfunction and telomere shortening have been implicated in both the pathophysiology of bipolar disorder and as targets of lithium treatment. Interestingly, it has in recent years become clear that these phenomena are intimately linked, partly through reactive oxygen species signaling and the subcellular translocation and non-canonical actions of telomerase reverse transcriptase. In this review, we integrate the current understanding of mitochondrial dysfunction, oxidative stress and telomere shortening in bipolar disorder with documented effects of lithium. Moreover, we propose that lithium’s mechanism of action is intimately connected with the interdependent regulation of mitochondrial bioenergetics and telomere maintenance.

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