Analysis of contractile properties of muscles from rats immunized with purified acetylcholine receptor.

Abstract:

:Experimental autoimmune myasthenia gravis (EAMG) was induced in rats by injection of purified acetylcholine receptor (AChR). In addition to detecting elevated serum titers of anti-AChR antibodies, we observed decreased twitch-tension at submaximal stimulation voltages and increased curare sensitivity by muscles obtained from immunized rats when compared to muscles obtained from nonimmune control rats. Furthermore, antibody-induced neuromuscular impairment was expressed to differing extents dependent on whether the diaphragm, soleus, or extensor digitorum longus muscle was examined. Thus, we conclude that potential antibody perturbation of AChR function will depend not only on the nature of the antibody, but also on the complex structure-function relationships that exist in individual muscles. This may partially explain the variable impairment of different muscle groups in patients with myasthenia.

journal_name

J Neuroimmunol

authors

Olsberg CA,Maxwell LC,Mikiten TM,Krolick KA

doi

10.1016/0165-5728(87)90013-0

subject

Has Abstract

pub_date

1987-04-01 00:00:00

pages

253-66

issue

3

eissn

0165-5728

issn

1872-8421

pii

0165-5728(87)90013-0

journal_volume

14

pub_type

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