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An EM analysis of the synaptic connections of horseradish peroxidase‐filled stalked cells and islet cells in the substantia gelatinosa of adult cat spinal cord

An EM analysis of the synaptic connections of horseradish peroxidase‐filled stalked cells and... Two major interneurons of the outer part of Rexed's layer II (IIa) were impaled with microelectrodes, had their primary inputs characterized, and were subsequently filled with horseradish peroxidase. Their fine structural characteristics and synaptic connections were then analyzed electron microscopically. Two islet cells, whose rostrocaudally oriented dendrites were largely confined within layer IIa, received primary input form small myelinated axons. A stalked cell, whose cell body was situated on I/II border had a cone‐shaped dendritic arbor which traversed layer IIa as well as the inner part of Rexed's layer II (IIb) and rostrocaudal dendritic branches which ran for part of their course along the I/IIa border. It received primary input from small myelinated as well as form unmyelinated axons. Both cell types received asymmetrical axodendritic synapses from primary endings in layer IIa and IIb glomeruli and widely separated symmetrical axodendritic synapses from small nonprimary endings outside of glomerli. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Comparative Neurology Wiley

An EM analysis of the synaptic connections of horseradish peroxidase‐filled stalked cells and islet cells in the substantia gelatinosa of adult cat spinal cord

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References (54)

Publisher
Wiley
Copyright
"Copyright © 1980 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
0021-9967
eISSN
1096-9861
DOI
10.1002/cne.901940406
pmid
6259218
Publisher site
See Article on Publisher Site

Abstract

Two major interneurons of the outer part of Rexed's layer II (IIa) were impaled with microelectrodes, had their primary inputs characterized, and were subsequently filled with horseradish peroxidase. Their fine structural characteristics and synaptic connections were then analyzed electron microscopically. Two islet cells, whose rostrocaudally oriented dendrites were largely confined within layer IIa, received primary input form small myelinated axons. A stalked cell, whose cell body was situated on I/II border had a cone‐shaped dendritic arbor which traversed layer IIa as well as the inner part of Rexed's layer II (IIb) and rostrocaudal dendritic branches which ran for part of their course along the I/IIa border. It received primary input from small myelinated as well as form unmyelinated axons. Both cell types received asymmetrical axodendritic synapses from primary endings in layer IIa and IIb glomeruli and widely separated symmetrical axodendritic synapses from small nonprimary endings outside of glomerli.

Journal

The Journal of Comparative NeurologyWiley

Published: Mar 15, 1981

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