Abstract
Hyperbaric oxygen (HBO) therapy helps alleviate secondary injury following brain trauma [traumatic brain injury (TBI)], although the mechanisms remain unclear. In this study, we assessed recovery of post-TBI spatial learning and memory in rats using the Morris water maze (MWM) and measured changes in apparent diffusion coefficient in the hippocampus by diffusion-weighted imaging (DWI) to evaluate possible therapeutic effects of HBO on TBI-associated brain edema. DWIs were obtained 8, 24, 48 h, 7 days, and 14 days post-TBI. Daily HBO therapy significantly improved post-TBI MWM performance and reduced edema in the ipsilateral hippocampus, suggesting that the therapeutic efficacy of HBO is mediated, at least in part, by a reduction in brain edema.
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Abbreviations
- TBI:
-
Traumatic brain injury
- MWM:
-
Morris water maze
- DWI:
-
Diffusion-weighted imaging
- ADC:
-
Apparent diffusion coefficient
- HBO:
-
Hyperbaric oxygen
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Acknowledgments
We are thankful for the excellent technical assistance of Zhijun Zhang and Yulin Dong. This study was supported by the Science and Technology Plan Projects of Nantong (Grant No. HS13967TDFY0348).
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Liu, S., Liu, Y., Deng, S. et al. Beneficial effects of hyperbaric oxygen on edema in rat hippocampus following traumatic brain injury. Exp Brain Res 233, 3359–3365 (2015). https://doi.org/10.1007/s00221-015-4405-7
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DOI: https://doi.org/10.1007/s00221-015-4405-7