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Comparative histological investigation of the sequelae of experimental myelography using sodium methiodal and meglumine iothalamate

Etude histologique comparative des sequelles de myelographie experimentale a l'aide de sodium methiodal et du meglumine ipthalamate

Vergleichende histologische Untersuchungen der Folge-erscheinungen von experimentellen Myelographien mit Sodium Methiodal und Meglumin Iothalamat

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Summary

The water soluble contrast media sodium methiodal and meglumine iothalamate have been used in experimental myelography on a total of 76 rabbits. Histological examination of the spinal cord, nerve roots and meninges revealed changes in 36 (47%) of the animals, most commonly in the form of infiltration of the leptomeninges with leucocytes. In addition there was cell infiltration in both cord and nerve roots, and in a few animals nerve cell degeneration and leptomeningeal fibrosis. — Comparison of the two media revealed that there were histological changes in 27 of the 39 rabbits that had received sodium methiodal (69%), and in 9 of the 37 animals (24%) that had received meglumine iothalamate. In a control group of 52 rabbits which had either been subjected to no operation, or else to cisternal puncture alone or with the injection of physiological saline some time before they were killed, histological changes were found in 3 (6%). — With a few exceptions the results found in this study are in accordance with the findings reported in the literature following myelography with sodium methiodal. No histological changes following myelography with meglumine iothalamate have been described previously.

Résumé

Les produits de contraste hydrosolubles tels que le sodium méthiodal et le méglumine iothalamate ont été utilisés en myélographie expérimentale sur un total de 76 lapins. L'examen histologique de la moelle épinière, des racines nerveuses et des méninges révéla des modifications chez 36 (47%) animaux le plus souvent sous forme d'infiltration de leucocytes dans les leptoméninges. De plus, on trouva une infiltration cellulaire à la fois de la moelle et des racines nerveuses et, chez quelques animaux, une dégénérescence des cellules nerveuses et une fibrose leptoméningée. La comparaison des deux produits montra qu'il y avait des modifications histologiques chez 27 des 39 lapins traités au sodium méthiodal (69%) et chez 9 des 37 animaux (24%) traités au méglumine iothalamate. Chez un groupe témoin de 52 lapins qui, soit ne furent soumis à aucune opération, soit avaient subi une ponction cisternale seule ou avec injection de sérum physiologique quelques temps avant d'être tués, des modifications histologiques furent observées chez 3 animaux (6%). —A quelques exceptions près, les résultats obtenus lors de cette expérimentation concordent avec les observations rapportées dans la littérature après myélographie au sodium méthiodal. Aucune modification après myélographie au graphie au méglumine iothalamate n'a été décrite précédemment.

Zusammenfassung

Im Tierversuch wurden an Kaninchen die Folgeerscheinungen nach einer experimentellen Myelographie mit Sodium Methiodal (z.B. Abrodil) und mit Meglumin Iothalamat (z.B. Conray 60) untersucht. Die histologischen Untersuchungen zeigten in 69% der Tiere, die Sodium Methiodal erhalten hatten, deutliche Veränderungen in Form von Infiltrationen der Leptomeninx. Auch ließen sich Zellinfiltrationen am Rückenmark und an den Nervenwurzeln nachweisen. Ähnliche Veränderungen fanden sich in 24% der Fälle bei den Tieren, denen Meglumin Iothalamat injiziert worden war.

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Praestholm, J., Ølgaard, K. Comparative histological investigation of the sequelae of experimental myelography using sodium methiodal and meglumine iothalamate. Neuroradiology 4, 14–19 (1972). https://doi.org/10.1007/BF00344803

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