Impaired axonal transport of acetylcholinesterase in the sciatic nerve of alloxan-diabetic rats: effect of ganglioside treatment

P. Marini, M. Vitadello, R. Bianchi, C. Triban, A. Gorio

Research output: Contribution to journalArticlepeer-review

Abstract

The anterograde and retrograde axonal flow of acetylcholinesterase were studied in the sciatic nerve of alloxandiabetic rats after five weeks of experimental diabetes. A slight reduction of the anterograde axonal flow of the enzyme was found in alloxan-diabetic compared to control rats. Sedimentation analysis revealed a major reduction of anterograde axonal flow of the light globular forms of the enzyme (G1 +G2), which are probably conveyed by slow transport. There was also a minor reduction of the anterograde flow of the globular form G4, while no modification of the axonal flow of the heavy asymmetric form A12 was found. Both G4 and A12 molecular forms are conveyed by fast axonal transport. In contrast, no abnormality of the retrograde axonal flow of acetylcholinesterase was observed. Ganglioside treatment antagonized the decline of the anterograde axonal flow of the enzyme in alloxan-diabetic rats. These results are consistent with the view that experimental diabetic neuropathy is associated with axonal transport defects, and suggest a protective effect of ganglioside treatment against neuronal damage(s) related to the diabetic syndrome.

Original languageEnglish
Pages (from-to)254-258
Number of pages5
JournalDiabetologia
Volume29
Issue number4
DOIs
Publication statusPublished - Apr 1986

Keywords

  • acetylcholinesterase
  • Axonal transport
  • experimental diabetic neuropathy
  • gangliosides

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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