Augmented anti-acetylcholine receptor response following long-term penicillamine administration.

Abstract:

:Because of the association of D-penicillamine (DP) therapy with myasthenia gravis, we have studied long-term DP treatment in five inbred strains of mice with doses comparable to those used in patients with rheumatoid arthritis. No clinical weakness or anti-acetylcholine receptor (AChR) antibody developed with up to 6 months of treatment, but augmented responses did occur to challenge with purified AChR in adjuvant. Anti-AChR antibody titers in C57BL/6 and C3H/He mice were significantly higher after challenge with AChR in DP-treated than in control mice. Augmented anti-AChR titers were not seen in strain A mice, but after 6 months of DP treatment increased susceptibility developed to the induction of experimental autoimmune myasthenia gravis. Nine weeks after challenge with purified AChR, 10 of 11 mice developed clinical weakness, leading to death in 6. Results of edrophonium testing were positive in 5 of 6 mice, and electrophysiological abnormalities were demonstrated in 3 of the surviving mice. Long-term DP treatment is associated with augmented anti-AChR antibody responses in C3H/He and C57BL/6 mice, and increased susceptibility to experimental autoimmune myasthenia gravis in strain A mice.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Bever CT Jr,Dretchen KL,Blake GJ,Chang HW,Penn AS,Asofsky R

doi

10.1002/ana.410160103

subject

Has Abstract

pub_date

1984-07-01 00:00:00

pages

9-13

issue

1

eissn

0364-5134

issn

1531-8249

journal_volume

16

pub_type

杂志文章
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