• Curr Opin Clin Nutr Metab Care · Nov 2013

    Review

    Zinc in traumatic brain injury: from neuroprotection to neurotoxicity.

    • Deborah R Morris and Cathy W Levenson.
    • aDepartment of Biomedical Sciences bProgram in Neuroscience, Florida State University College of Medicine, Tallahassee, Florida, USA.
    • Curr Opin Clin Nutr Metab Care. 2013 Nov 1; 16 (6): 708-11.

    Purpose Of ReviewIn light of the recent recognition that even mild forms of traumatic brain injury (TBI) can lead to long-term cognitive and behavioral deficits, this review examines recent data on the neuroprotective and neurotoxic roles of zinc after brain injury.Recent FindingsData show that treatment using dietary and parenteral zinc supplementation can reduce TBI-associated depression and improve cognitive function, specifically spatial learning and memory. However, excessive release of free zinc, particularly in the hippocampus associated with acute injury, can lead to increases in protein ubiquitination and neuronal death.SummaryThis work shows the need for future research to clarify the potentially contradictory roles of zinc in the hippocampus and define the clinical use of zinc as a treatment following brain injury in humans. This is particularly important given the finding that zinc may reduce TBI-associated depression, a common and difficult outcome to treat in all forms of TBI.

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