Acetylcholinesterase activity of Renshaw elements and Renshaw bulbs. A light- and electron-histochemical study

B. Csillik, L. Tóth, Sarolta Karcsu

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Abstract

Renshaw elements, representing the structural basis of spinal recurrent inhibition, consist of bulbous dilatations of the dendrites of Renshaw cells. These dendritic bulbs are surrounded by terminals derived from initial axon collaterals of motoneurons. The axon terminals display intense acetylcholinesterase activity. Light-microscopic histochemistry reveals the convergence of numerous acetylcholinesterase-positive axons on every Renshaw bulb. Electron histochemistry suggests that the central 'core' of the Renshaw element is in effect, a bulbous dendritic dilatation. Acetylcholinesterase activity is confined to surface membranes of terminal axons.

Original languageEnglish
Pages (from-to)441-455
Number of pages15
JournalJournal of Neurocytology
Volume2
Issue number4
DOIs
Publication statusPublished - Dec 1 1973

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Keywords

  • Renshaw cell
  • acetylcholinesterase
  • electron histochemistry
  • spinal cord

ASJC Scopus subject areas

  • Anatomy
  • Neuroscience(all)
  • Histology
  • Cell Biology

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