We report the chemical pathological changes on magnetic resonance spectroscopic images of 4 patients, each of whom had a single large demyelinating plaque. The patients were followed from soon after the onset of the symptoms for a minimum of 7 months to a maximum of 3 1/2 years. We observed increases in the relative resonance intensities of choline-containing compounds, lactate, and myo-inositol inside the lesion acutely. Decreases in relative resonance intensities of N-acetylaspartate and creatine were seen both in and around the magnetic resonance imaging-detected lesions. In all patients neurological deficits improved and creatine, lactate, and myo-inositol resonance intensities normalized during the follow-up. Choline compounds recovered more slowly and were still abnormally high in 1 patient after 7 months. Partial recovery of the N-acetylaspartate resonance was seen for all patients. Evaluation of the relationships between indices of cerebral chemical pathology, brain lesion volumes, and functional disability showed highly significant negative correlations between N-acetylaspartate resonance intensities and both brain lesion volumes (r = -0.80, p < 0.0001) and clinical disability (r = -0.73, p < 0.0001). As N-acetylaspartate is localized solely in neurons in the adult central nervous system, our results suggest that neuronal dysfunction may be a proximate mechanism of disability even in inflammatory disorders primarily affecting myelin and oligodendroglial cells.
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|Titolo:||Chemical pathology of acute demyelinating lesions and its correlation with disability.|
|Rivista:||ANNALS OF NEUROLOGY|
|Citazione:||DE STEFANO, N., Matthews, P.m., Antel, J.p., Preul, M., Francis, G., & Arnold, D.l. (1995). Chemical pathology of acute demyelinating lesions and its correlation with disability. ANNALS OF NEUROLOGY, 38(6), 901-909.|
|Appare nelle tipologie:||1.1 Articolo in rivista|