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Origin and fine structure of substance P-containing nerve terminals in the facial nucleus of the rat: an immunohistochemical study

Origin and fine structure of substance P-containing nerve terminals in the facial nucleus of the... 221 57 57 3 3 E. Senba M. Tohyama Department of Neuroanatomy Institute of Higher Nervous Activity, Osaka University Medical School 4-3-57 Nakanoshima, Kitaku 530 Osaka Japan Summary The distribution, origin and fine structure of substance P-like immunoreactive (SPI) nerve terminals in the facial nucleus of the rat were investigated by means of immunocytochemistry. SPI-terminals were concentrated in the intermediate and dorsal subnuclei of the facial nucleus. Hemi-transection of the brainstem just rostral to the facial nucleus or at the most caudal level of the medulla oblongata did not cause any change of SPI-terminals in the facial nucleus. Electrical destruction of the various parts of the medulla oblongata clearly demonstrated that SPI-terminals in the intermediate subnucleus were supplied contralaterally from the SPI-neurons in the dorsomedial part of the medullary reticular formation. Most of the SPI-terminals (85%) in the intermediate subnucleus of the facial nucleus were observed to make asymmetric synaptic contacts with large dendrites (mean diameter; 1.26 μm). It was supposed that the contact sites are located on proximal parts of the dendrite. A few SPI-terminals (6%) formed axo-somatic contacts with large perikarya filled with numerous cytoplasmic organelles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experimental Brain Research Springer Journals

Origin and fine structure of substance P-containing nerve terminals in the facial nucleus of the rat: an immunohistochemical study

Senba, E.; Tohyama, M.
Experimental Brain Research , Volume 57 (3) – Feb 1, 1985
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References (37)

Publisher
Springer Journals
Copyright
Copyright © 1985 by Springer-Verlag
Subject
Biomedicine; Neurosciences; Neurology
ISSN
0014-4819
eISSN
1432-1106
DOI
10.1007/BF00237840
Publisher site
See Article on Publisher Site

Abstract

221 57 57 3 3 E. Senba M. Tohyama Department of Neuroanatomy Institute of Higher Nervous Activity, Osaka University Medical School 4-3-57 Nakanoshima, Kitaku 530 Osaka Japan Summary The distribution, origin and fine structure of substance P-like immunoreactive (SPI) nerve terminals in the facial nucleus of the rat were investigated by means of immunocytochemistry. SPI-terminals were concentrated in the intermediate and dorsal subnuclei of the facial nucleus. Hemi-transection of the brainstem just rostral to the facial nucleus or at the most caudal level of the medulla oblongata did not cause any change of SPI-terminals in the facial nucleus. Electrical destruction of the various parts of the medulla oblongata clearly demonstrated that SPI-terminals in the intermediate subnucleus were supplied contralaterally from the SPI-neurons in the dorsomedial part of the medullary reticular formation. Most of the SPI-terminals (85%) in the intermediate subnucleus of the facial nucleus were observed to make asymmetric synaptic contacts with large dendrites (mean diameter; 1.26 μm). It was supposed that the contact sites are located on proximal parts of the dendrite. A few SPI-terminals (6%) formed axo-somatic contacts with large perikarya filled with numerous cytoplasmic organelles.

Journal

Experimental Brain Research – Springer Journals

Published: Feb 1, 1985

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