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Japanese

A STUDY OF THE VAGAL INNERVATION OF THE CAT STOMACH BY MEANS OF RETROGRADE AXOPLASMIC TRANSPORT OF HORSERADISH PEROXIDASE:ON THE LOCALIZATION OF THE ORIGINS OF THE PREGANGLIONIC FIBERS Hajime Satomi 1 , Teiji Yamamoto 1 1First Department of Anatomy, Sapporo Medical College pp.525-536
Published Date 1977/5/1
DOI https://doi.org/10.11477/mf.1406204070
  • Abstract
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The origins of the vagal preganglionic fibers tothe plexuses of Auerbach and Meissner in thestomach wall have been investigated by the horse-radish peroxidase (HRP) method. HRP was injectedinto nine parts of the gastric wall in fifteen catsand the retrogradely labelled neurons were identifiedwith frozen serial sections.

1) HRP positive neurons were found evenly inboth sides of the dorsal motor nuclei regardless ofinjection sites and there was no evidence of asym-metry in the distribution of HRP positive cells.

2) HRP positive neurons were present through-out the rostrocaudal extent and were principallydistributed in the medial aspect of the dorsal motornucleus, although a few-stippled cells were foundin the lateral portion as well.

3) Below the level of the obex, HRP positiveneurons were also found in the medial solitarynucleus in most cases except for one in which HRPinjection was done along the gastric large curvature.

4) Small labelled neurons were also found in thecentral gray of the upper cervical spinal cord wherethe medial solitary nucleus or the dorsal motornucleus were no longer identifiable.

These results provide evidence that the cells inthe dorsal motor nucleus are donors of the pregan-glionic vagal fibers to the stomach and they appearto have a longitudinal topographic representationin the medial side of the dorsal motor nucleus.

In addition, neurons in the caudal half of themedial solitary nucleus appear to provide anothersource of the vagal preganglionic fibers to thestomach.

The result of this observation shows that thestomach is dually innervated by the dorsal motorand the medial solitary nuclei and that these twonuclei may subserve different roles in maintaininggastric activity.


Copyright © 1977, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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