Summary
Four cases of S.S.L.E are reported. The electron microscopy findings show: 1. Tubulary inclusion bodies: They appear in three cases out of four, either in neuronal and glial nucleus or in axis cylinders. Their morphological features are similar to the nucleocapsides of myxoviruses and particularly measles-virus. 2. Other different types of nonspecific inclusions: nuclear bodies, cristalline-like rods and fibrillar bundles which may be considered as the result of a nuclear metabolic disorder, osmiophilic particles which may be seen as the result of a cellular intracytoplasmic hyperactivity. The tubules are found whatever the duration of the disease (3 months up to 5 years) may be. This might indicate that there is no autosterilization of the virus in the C.N.S. during the course of S.S.L.E. According to the most recent papers, such a disease might be interpreted as an infection indirectly induced by measles-virus with an unknown immunologic or metabolic mechanism.
Résumé
Les auteurs rapportent 4 observations caractéristiques de LESS: L'analyse ultra-structurale montre: 10 — des inclusions tubulaires intra-nucléaires neuronales ou gliales et intra-axonales de morphologie superposable à celle des nucléocapsides des myxo-virus, de la rougeole en particulier. 20 — des formations non spécifiques: corps nucléaires, faisceaux cristallins et fibrillaires traduisant un trouble métabolique nucléaire, particules osmiophiles liées à une hyperactivité cellulaire. Les inclusions tubulaires virales sont présentes quelque soit la durée de la maladie (3 mois à 5 ans) indiquant l'absence d'autostérilisation virale dans le S.N.C. La LESS apparaît liée au virus rougeoleux mais le mécanisme indirect immunitaire ou métabolique de cette action est inconnu.
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Laboratoire d'Anatomie Pathologique de la Faculté de Médecine et Unité de Recherches Neurobiologiques de l'Inserm (Pr. Gastaut)
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Toga, M., Dubois, D., Berard, M. et al. Étude ultrastructurale de quatre cas de leuco-encéphalite sclérosante subaiguë. Acta Neuropathol 14, 1–13 (1969). https://doi.org/10.1007/BF00687698
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DOI: https://doi.org/10.1007/BF00687698