Synaptic connections of axo-axonic (chandelier) cells in human epileptic temporal cortex

Z. Kisvárday, C. B T Adams, A. D. Smith

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The human temporal cortex contains a type of interneuron, identified by Golgi impregnation which, like the axo-axonic or chandelier cells found in animals, establishes Gray's type II synaptic contacts exclusively with the axon initial segments of pyramidal cells. Each terminal segment is composed of 3-12 boutons to form a "chandelier"-like appearance. For the two human axo-axonic cells analysed in this study we could identify 269 and 86 bouton rows respectively, which represents an equivalent number of postsynaptic pyramidal cells. A terminal bouton row from one of these Golgi-impregnated cells was shown to be in synaptic contact with the axon initial segment of a Golgi-impregnated pyramidal cell. The very specific nature of the target of axo-axonic cells, together with their highly divergent axonal arborization, means that they are ideally placed to control the output of a large population of pyramidal cells. Since previous studies in animals have shown the GABAergic nature of axo-axonic cells it is possible that human axo-axonic cells could be involved in the generation of epileptic activity or in the control of its propagation.

Original languageEnglish
Pages (from-to)1179-1186
Number of pages8
JournalNeuroscience
Volume19
Issue number4
DOIs
Publication statusPublished - 1986

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Temporal Lobe
Pyramidal Cells
Interneurons
Population

ASJC Scopus subject areas

  • Neuroscience(all)

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Synaptic connections of axo-axonic (chandelier) cells in human epileptic temporal cortex. / Kisvárday, Z.; Adams, C. B T; Smith, A. D.

In: Neuroscience, Vol. 19, No. 4, 1986, p. 1179-1186.

Research output: Contribution to journalArticle

Kisvárday, Z. ; Adams, C. B T ; Smith, A. D. / Synaptic connections of axo-axonic (chandelier) cells in human epileptic temporal cortex. In: Neuroscience. 1986 ; Vol. 19, No. 4. pp. 1179-1186.
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