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Decoding Hippocampal Signaling Deficits After Traumatic Brain Injury

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Abstract

There are more than 3.17 million people coping with long-term disabilities due to traumatic brain injury (TBI) in the United States. The majority of TBI research is focused on developing acute neuroprotective treatments to prevent or minimize these long-term disabilities. Therefore, chronic TBI survivors represent a large, underserved population that could significantly benefit from a therapy that capitalizes on the endogenous recovery mechanisms occurring during the weeks to months following brain trauma. Previous studies have found that the hippocampus is highly vulnerable to brain injury, in both experimental models of TBI and during human TBI. Although often not directly mechanically injured by the head injury, in the weeks to months following TBI, the hippocampus undergoes atrophy and exhibits deficits in long-term potentiation (LTP), a persistent increase in synaptic strength that is considered to be a model of learning and memory. Decoding the chronic hippocampal LTP and cell signaling deficits after brain trauma will provide new insights into the molecular mechanisms of hippocampal-dependent learning impairments caused by TBI and facilitate the development of effective therapeutic strategies to improve hippocampal-dependent learning for chronic survivors of TBI.

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Acknowledgements

This study was supported by grants from the National Institutes of Health: NS069721, AG033266 and NS056072 and the United States Army Medical Research and Materiel Command: PR054538.

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The author declares no conflict of interest pertaining to this work.

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  1. Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, PO Box 016960 (R-48), Miami, FL, 33136, USA

    Coleen M. Atkins

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Atkins, C.M. Decoding Hippocampal Signaling Deficits After Traumatic Brain Injury. Transl. Stroke Res. 2, 546–555 (2011). https://doi.org/10.1007/s12975-011-0123-z

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