Histochemistry and acetylcholine receptor distribution in normal and denervated monkey extraocular muscles.

Abstract:

:In monkey extraocular muscles (EOM), a battery of histochemical reactions delineates three muscle fiber types, coarse, fine, and granular. Normal EOM are compared with EOM denervated by intracranial oculomotor nerve section. The experimentally denervated EOM fibers did not show the constellation of histologic responses typical of denervated limb muscle, making a diagnosis of a denervation process in EOM muscle very difficult. Although the denervated fine and granular fibers (but not the coarse fibers) develop diffuse extrajunctional acetylcholine receptors (AChR) following experimental denervation, this is not a reliable criterion of denervation because not all of those fibers developed it and they did not show it beyond a 12-week period following nerve section; moreover, myopathic mechanisms have previously been shown capable of provoking diffuse extrajunctional AChR in limb-muscle fibers.

journal_name

Neurology

journal_title

Neurology

authors

Ringel SP,Engel WK,Bender AN,Peters ND,Yee RD

doi

10.1212/wnl.28.1.55

subject

Has Abstract

pub_date

1978-01-01 00:00:00

pages

55-63

issue

1

eissn

0028-3878

issn

1526-632X

journal_volume

28

pub_type

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