Peripheral nerve abnormalities in aging rats.

Abstract:

:The sciatic/tibial/plantar nerve complex of normal aged rats displays striking morphological changes that are most pronounced distally. Nerve fiber abnormalities include: (a) large numbers of axonal glycogenosomes, mitochondria, dense membranous bodies, and decorated particles; (b) adaxonal Schwann cell processes sequestering portions of axoplasm; (c) swollen demyelinated and remyelinated axons, some encircled by supernumerary cellular processes; and (d) collagen pockets, denervated Schwann cell columns, and empty basal laminae. Abnormalities a and b were encountered with increasing frequency on descent through the tibial and plantar nerves. Abnormalities b, c, and d were found in lateral and medial plantar nerves, where they were associated with an enlarged endoneurial space. Found in animals kept in cages with smooth or wire-mesh floors, the incidence of these changes increased with advancing age. They are attributed to trauma and ischemia from chronic pressure on the plantar nerve.

authors

Grover-Johnson N,Spencer PS

doi

10.1097/00005072-198103000-00007

subject

Has Abstract

pub_date

1981-03-01 00:00:00

pages

155-65

issue

2

eissn

0022-3069

issn

1554-6578

journal_volume

40

pub_type

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