Sep 30, 1977

Somatopetal transport of horseradish peroxidase (HRP) in the peripheral and central branches of dorsal root ganglion cells

Cell and Tissue Research
W NeuhuberW Zenker

Abstract

The axonal transport of HRP in both the peripheral and central branches of dorsal root ganglion cells was studied in rats. For studying axonal transport in the peripheral branch HRP as a dry substance was applied to the peroneal nerve injured either by teasing, by cutting or crushing. After a short survival time (22 h) mainly small spinal ganglion cells of the corresponding segments were labelled, while after a prolonged survival time (70 h) mainly large cells were labelled. These labelling differences are referred to different transport rates or to differences in the process of accumulation of HRP in neurons of various sizes. No evidence could be found for HRP transport from the peripheral into the central branch. Injection of HRP into the spinal cord (survival time 22 h) or into the dorsal column nuclei (survival time 46 h) was followed by labelling of numerous spinal ganglion cell perikarya of all sizes. Reaction product was found also within the prebifurcation segment of spinal ganglion cell processes. On the basis of light microscopic exploration only somatopetal transport could be detected.

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Mentioned in this Paper

Ovoperoxidase
Alpha-Peroxidase
Axonal Transport
Malignant Neoplasm of Spinal Cord
Neurons
Neoplasm of Uncertain or Unknown Behavior of Spinal Cord
Crushing Sensation
Structure of Common Peroneal Nerve
Spinal Cord Diseases
Benign Neoplasm of Spinal Cord

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