Apport de la spectroscopie RMN à l'évaluation du traumatisme crânien
| Autor: | J.-F. Payen, B. Fauvage, G. Francony, J-F. Le Bas |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
medicine.medical_specialty
Choleretic Traumatic brain injury Intracellular pH Creatine Phosphocreatine White matter 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Internal medicine medicine Choline 030304 developmental biology 0303 health sciences business.industry General Medicine Metabolism medicine.disease 3. Good health Anesthesiology and Pain Medicine Endocrinology medicine.anatomical_structure nervous system chemistry Nuclear medicine business 030217 neurology & neurosurgery |
| Zdroj: | Annales Françaises d'Anesthésie et de Réanimation. 24:522-527 |
| ISSN: | 0750-7658 |
| DOI: | 10.1016/j.annfar.2005.03.005 |
| Popis: | Nuclear magnetic spectroscopy (MRS) is a useful method for noninvasively studying intracerebral metabolism. Proton MRS can identify markers of the neuronal viability (N-acetyl-aspartate, NAA), of the metabolism of cellular membranes (choline), of the cellular energy metabolism (creatine, lactate). In Phosphorus MRS, the peaks most readily identified are involved in the high-energy cellular metabolism (ATP, phosphocreatine, inorganic phosphate), and intracellular pH (pHi) can be determined using this method. MRS has been used in experimental models of traumatic brain injury (TBI), primarily to study the cellular metabolism and the relation between biochemical and histological changes after trauma. In trauma patients, significant changes in NAA, choline and pHi were found in both grey and white matter comparing with controls, and these alterations correlated with injury severity. Correlations have been reported between these biochemical changes (reduction in NAA, increase in choline) measured at 1 to 6 months after TBI and the clinical outcome of the patients. However, there are methodological issues which still impede to recommend MRS as a tool for predicting neurological outcome in the clinical setting. |
| Databáze: | OpenAIRE |
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