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The Na,K-ATPase hypothesis for bipolar illness
1Neuropsychiatry Branch, National Institute of Mental Health, Neuropsychiatric Research Hospital, Washington, DC, USA.
Biological Psychiatry
|February 15, 1995
Summary
A cellular model for bipolar disorder suggests that reduced sodium-potassium adenosine triphosphatase pump (Na,K-ATPase) activity may cause mania and depression by altering neuronal function. This impacts excitability and neurotransmitter release.
Area of Science:
- Neuroscience
- Cellular Biology
- Psychiatry
Background:
- Bipolar illness is a complex mood disorder with unclear cellular mechanisms.
- Neuronal excitability and neurotransmitter release are critical for mood regulation.
Purpose of the Study:
- To present a cellular model for bipolar illness.
- To investigate the role of the sodium- and potassium-activated adenosine triphosphatase pump (Na,K-ATPase) in bipolar disorder.
Main Methods:
- Review of existing evidence supporting the proposed cellular model.
- Analysis of the functional consequences of altered Na,K-ATPase activity on neuronal function.
Main Results:
- A reduction in Na,K-ATPase activity is proposed as a potential mechanism for bipolar illness.
- Decreased Na,K-ATPase activity may lead to increased neuronal membrane excitability (mania) and reduced neurotransmitter release (depression).
Conclusions:
- The Na,K-ATPase pump is a potential cellular target for understanding and treating bipolar disorder.
- This cellular model provides a framework for future research into the pathophysiology of mood disorders.