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Reducing the toxicity of lithium

Date:
June 10, 2010
Source:
Journal of Clinical Investigation
Summary:
Lithium is the most effective treatment for bipolar disorder. However, its use is limited because of neurological side effects and a risk for overdose-induced toxicity. Researchers have now delineated a molecular pathway by which chronic administration of therapeutic doses of lithium has negative effects in mice and hope that these data might provide new ideas for combination therapies that diminish the toxicities of lithium.

Lithium is the most effective treatment for bipolar disorder. However, its use is limited because of neurological side effects and a risk for overdose-induced toxicity. Many of the beneficial effects of lithium are mediated by its inhibition of GSK-3 proteins, but whether this is the mechanism underlying its negative effects has not been determined.

However, Raquel Gσmez-Sintes and Josι Lucas, at CSIC/UAM, Spain, have now delineated a molecular pathway by which chronic administration of therapeutic doses of lithium has negative effects in mice.

Specifically, they found that gait abnormalities and nerve cell death in several regions of the brain were a result of GSK-3 protein inhibition, which led to increased nuclear localization of NFATc3/4 proteins and increased levels of the death-inducing molecule Fas ligand.

The authors hope that these data might provide new ideas for combination therapies that diminish the toxicities of lithium, which has been proposed as a treatment for Alzheimer disease.


Story Source:

The above story is based on materials provided by Journal of Clinical Investigation. Note: Materials may be edited for content and length.


Journal Reference:

  1. Raquel Gσmez-Sintes and Josι J. Lucas. NFAT/Fas signaling mediates the neuronal apoptosis and motor side effects of GSK-3 inhibition in a mouse model of lithium therapy. Journal of Clinical Investigation, June 7, 2010 DOI: 10.1172/JCI37873

Cite This Page:

Journal of Clinical Investigation. "Reducing the toxicity of lithium." ScienceDaily. ScienceDaily, 10 June 2010. <www.sciencedaily.com/releases/2010/06/100607192718.htm>.
Journal of Clinical Investigation. (2010, June 10). Reducing the toxicity of lithium. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2010/06/100607192718.htm
Journal of Clinical Investigation. "Reducing the toxicity of lithium." ScienceDaily. www.sciencedaily.com/releases/2010/06/100607192718.htm (accessed July 30, 2014).

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