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occular myasthenia gravis

B Eymard, P Chillet
AUTOIMMUNE DISEASE: Myasthenia gravis is a one of the rare autoimmune diseases with a well-defined antigen. Autoantibodies directed against the muscular acetylcholine receptor (AChR) play a key role, blocking the acetylchoroquine binding site and provoking accelerated receptor degradation; complement destroys the post-synaptic membrane. Disease severity is correlated with extent of AChR loss. THYMUS: Involvement of the thymus is suggested by the beneficial effect of thymectomy and by histological and functional anomalies (modified cellular composition, abnormally activated lymphocytes, sensitivization of certain lymphocytes to AChR)...
May 31, 1997: La Presse M├ędicale
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