Ultrastructure of HRP-identified sympathetic preganglionic neurons in cats

K. Chung, F. W. LaVelle, R. D. Wurster

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Electron microscopic studies were conducted on cat sympathetic preganglionic neurons which were labeled using retrograde transport of horseradish peroxidase from the injection site in the stellate ganglion to somas in the thoracic spinal cord. Based on size, the identified somas were divided into two groups: large multipolar somas (25-35 μm), usually having three dendrites with a mean diameter of 8 μm, and small fusiform somas (12-24 μm), with two primary dendrites with a mean diameter of about 4 μm. The ultrastructure of the perikarya and dendrites were similar to other spinal neurons. Three types of terminals were identified: 1) round asymmetric terminals, 2) pleomorphic symmetric terminals, and 3) round symmetric terminals. On the soma, pleomorphic terminals were more numerous than round asymmetric terminals. On the dendrites, the density of round asymmetric terminals was similar to pleomorphic symmetric terminals. Round symmetric terminals represent only a small percent on either the soma or dendrites. Because of the greater total density of terminals on the dendrites than soma, pleomorphic symmetric and round asymmetric terminals are primarily located on the dendrites. Very few dense-core vesicles characteristic of monoamine terminals were observed, perhaps due to the fixative used.

Original languageEnglish (US)
Pages (from-to)147-155
Number of pages9
JournalJournal of Comparative Neurology
Volume190
Issue number1
StatePublished - 1980
Externally publishedYes

Fingerprint

Carisoprodol
Dendrites
Cats
Neurons
Stellate Ganglion
Fixatives
Secretory Vesicles
Horseradish Peroxidase
Spinal Cord
Thorax
Electrons
Injections

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Chung, K., LaVelle, F. W., & Wurster, R. D. (1980). Ultrastructure of HRP-identified sympathetic preganglionic neurons in cats. Journal of Comparative Neurology, 190(1), 147-155.

Ultrastructure of HRP-identified sympathetic preganglionic neurons in cats. / Chung, K.; LaVelle, F. W.; Wurster, R. D.

In: Journal of Comparative Neurology, Vol. 190, No. 1, 1980, p. 147-155.

Research output: Contribution to journalArticle

Chung, K, LaVelle, FW & Wurster, RD 1980, 'Ultrastructure of HRP-identified sympathetic preganglionic neurons in cats', Journal of Comparative Neurology, vol. 190, no. 1, pp. 147-155.
Chung, K. ; LaVelle, F. W. ; Wurster, R. D. / Ultrastructure of HRP-identified sympathetic preganglionic neurons in cats. In: Journal of Comparative Neurology. 1980 ; Vol. 190, No. 1. pp. 147-155.
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