Neuro-Metabolite Changes in a Single Season of University Ice Hockey Using Magnetic Resonance Spectroscopy
| Autor: | Hemali Panchal, Nico Sollmann, Ofer Pasternak, Michael L. Alosco, Philipp Kinzel, David Kaufmann, Elisabeth Hartl, Lorie A. Forwell, Andrew M. Johnson, Elaine N. Skopelja, Martha E. Shenton, Inga K. Koerte, Paul S. Echlin, Alexander P. Lin |
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| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
Traumatic brain injury Metabolite sex difference Corpus callosum lcsh:RC346-429 030218 nuclear medicine & medical imaging 03 medical and health sciences chemistry.chemical_compound Ice hockey 0302 clinical medicine ice hockey Internal medicine Statistical significance medicine Choline repetitive head injury lcsh:Neurology. Diseases of the nervous system Original Research business.industry traumatic brain injury medicine.disease magnetic resonance spectroscopy Endocrinology chemistry Neurology Neurology (clinical) Verbal memory business Neurocognitive 030217 neurology & neurosurgery |
| Zdroj: | Frontiers in Neurology Frontiers in Neurology, Vol 9 (2018) |
| ISSN: | 1664-2295 |
| Popis: | Background: Previous research has shown evidence for transient neuronal loss after repetitive head impacts (RHI) as demonstrated by a decrease in N-acetylaspartate (NAA). However, few studies have investigated other neuro-metabolites that may be altered in the presence of RHI; furthermore, the relationship of neuro-metabolite changes to neurocognitive outcome and potential sex differences remain largely unknown. Objective: The aim of this study was to identify alterations in brain metabolites and their potential association with neurocognitive performance over time as well as to characterize sex-specific differences in response to RHI. Methods: 33 collegiate ice hockey players (17 males and 16 females) underwent 3T magnetic resonance spectroscopy (MRS) and neurocognitive evaluation before and after the Canadian Interuniversity Sports (CIS) ice hockey season 2011-2012. The MRS voxel was placed in the corpus callosum. Pre- and postseason neurocognitive performances were assessed using the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT). Absolute neuro-metabolite concentrations were then compared between pre- and postseason MRS were (level of statistical significance after correction for multiple comparisons: p < 0.007) and correlated to ImPACT scores for both sexes. Results: A significant decrease in NAA was observed from preseason to postseason (p = 0.001). Furthermore, a trend toward a decrease in total choline (Cho) was observed (p = 0.044). Although no overall effect was observed for glutamate (Glu) over the season, a difference was observed with females showing a decrease in Glu and males showing an increase in Glu, though this was not statistically significant (p = 0.039). In both males and females, a negative correlation was observed between changes in Glu and changes in verbal memory (p = 0.008). Conclusion: The results of this study demonstrate changes in absolute concentrations of neuro-metabolites following exposure to RHI. Results suggest that changes in Glu are correlated with changes in verbal memory. Future studies need to investigate further the association between brain metabolites and clinical outcome as well as sex-specific differences in the brain's response to RHI. |
| Databáze: | OpenAIRE |
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