Prevention of the death of the rat axotomized hypoglossal nerve and promotion of its regeneration by bovine brain gangliosides

Michi Ichiro Itoh, Satoshi Fukumoto, Nobuyuki Baba, Yoshiro Kuga, Akio Mizuno, Koichi Furukawa

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have examined the time course of the neuronal death and regeneration of rat axotomized hypoglossal nerve with various conditions of the nerve resection, and established a useful system to measure neurotrophic activities of bioactive substances. In this system, neuronal death can be evaluated by counting surviving neurons in the nucleus of hypoglossal neuron at the brain stem, and the degree of the regeneration can be measured by counting horseradish peroxidase-positive cells at the same region after injection of horseradish peroxidase into tongue. Using this system, the effects of brain gangliosides on rat hypoglossal nerve regeneration following 5 mm transection were examined. The addition of a ganglioside mixture from bovine brain as well as the autograft strongly prevented the death of neurons and promoted the regeneration of the lesioned nerve at 10 weeks after the operation. Further analyses on the dose effects and injection sites of gangliosides were performed. Although the mechanisms of the neurotrophic effects of the gangliosides are unknown, the therapeutic application of gangliosides for neuronal degeneration is a promising approach.

Original languageEnglish
Pages (from-to)1247-1252
Number of pages6
JournalGlycobiology
Volume9
Issue number11
DOIs
Publication statusPublished - Nov 1999

All Science Journal Classification (ASJC) codes

  • Biochemistry

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