Anti-ryanodine receptor antibodies and FK506 in myasthenia gravis.
case_series · Level IV
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Abstract
Anti-ryanodine receptor (RyR) antibodies were measured in sera from 33 myasthenia gravis (MG) patients using three peptides from the human RyR1 sequence, two C-terminal peptides included in the functional calcium release channel, and an N-terminal peptide implicated in ion-conduction. Antibodies were more frequently positive against the two C-terminal peptides, particularly in thymoma-associated MG. In a preliminary open trial with FK506, immunosuppressant and enhancer of RyR-related sarcoplasmic calcium release, the authors observed the sustained benefits in anti-RyR-positive MG patients.
Medical subject headings
- Autoantibodies
- Autoantigens
- Immunosuppressive Agents
- Myasthenia Gravis
- Ryanodine Receptor Calcium Release Channel
- Tacrolimus