IL-1 receptor antagonist-mediated therapeutic effect in murine myasthenia gravis is associated with suppressed serum proinflammatory cytokines, C3, and anti-acetylcholine receptor IgG1

Huan Yang, Erdem Tüzün, Dhivyaa Alagappan, Xiang Yu, Benjamin G. Scott, Alexander Ischenko, Premkumar Christadoss

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29 Scopus citations

Abstract

In myasthenia gravis (MG), TNF and IL-1β polymorphisms and high serum levels of these proinflammatory cytokines have been observed. Likewise, TNF and IL-1β are critical for the activation of acetylcholine receptor (AChR)-specific T and B cells and for the development of experimental autoimmune myasthenia gravis (EAMG) induced by AChR immunization. We tested the therapeutic effect of human recombinant IL-1 receptor antagonist (IL-1ra) in C57BL/6 mice with EAMG. Multiple daily injections of 0.01 mg of IL-1ra administered for 2 wk following two AChR immunizations decreased the incidence and severity of clinical EAMG. Furthermore, IL-1ra treatment of mice with ongoing clinical EAMG reduced the clinical symptoms of disease. The IL-1ra-mediated suppression of clinical disease was associated with suppressed serum IFN-γ, TNF-α, IL-1β, IL-2, IL-6, C3, and anti-AChR IgG1 without influencing total serum IgG. Therefore, IL-1ra could be used as a nonsteroidal drug for the treatment of MG.

Original languageEnglish (US)
Pages (from-to)2018-2025
Number of pages8
JournalJournal of Immunology
Volume175
Issue number3
DOIs
StatePublished - Aug 1 2005

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ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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