Demyelination-induced plasticity in the axon membrane: an ultrastructural cytochemical study of lead neuropathy in the rat.

Abstract:

:We examined the distribution of ferric ion-ferrocyanide stain (a marker for excitable regions of myelinated fibers) in the lead-induced demyelinating neuropathy of the rat. By electron microscopy, we found that paranodal degeneration resulted in spreading of the reaction product from nodal to internodal axolemma. During repair, nodal-like stained areas formed at the contact zones between preremyelinating Schwann cells. These data suggest that the location and extent of excitable axonal regions are influenced by axoglial relationships. Additionally, some fibers displayed staining at paranodal axolemma adjacent to demyelinated segments, suggesting it might be an alternative site for impulse generation in demyelinated fibers.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Coria F,Silos I,Fernandez R,Monton F,Lafarga M

doi

10.1016/0304-3940(85)90081-3

subject

Has Abstract

pub_date

1985-08-05 00:00:00

pages

359-64

issue

3

eissn

0304-3940

issn

1872-7972

pii

0304-3940(85)90081-3

journal_volume

58

pub_type

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