MODIFICATIONS HISTOLOGIQUES DANS LE THALAMUS SOMATOSENSORIEL APRES COAGULATION UNILATERALE DES FOLLICULES DES VIBRISSES DU MUSEAU CHEZ LA SOURIS NOUVEAUNEE

Translated title of the contribution: Morphological modifications in the somatosensory thalamus after unilateral vibrissa follicle coagulation in the newborn mouse

C. Savy, M. Madarasz, R. Verley, J. Somogyi, J. Hamori, E. Farkas-Bargeton

Research output: Contribution to journalArticle

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Abstract

A light microscopic study of the thalamic ventro-basal complex (VB), after unilateral coagulation of vibrissa follicles in the newborn mouse, revealed an excess of neuronal perikarya on the contralateral 'deafferented' side as compared to the normal side. The higher density of nerve cells was confined to the vibrissal relay in the medial part of the VB nucleus (VB(m)), whereas the cell number in the non vibrissal-lateral part of this nucleus (VB1) remained at the control level. Electron microscopic investigation of the thalamic vibrissal relay has shown signs of a modified synaptogenesis on the 'deafferented' side: (a) the number of specific afferents diminished and in contrast to the normal side, most of the specific sensory terminals contain small spheroid synaptic vesicles and (b) the number of axon terminals with ovoid pleomorphic vesicles doubled.

Original languageFrench
Pages (from-to)535-540
Number of pages6
JournalComptes Rendus des Seances de l'Academie des Sciences - Series III
Volume300
Issue number14
Publication statusPublished - Aug 7 1985

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ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Developmental Biology

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