A Proinflammatory Role of IL-18 in the Development of Spontaneous Autoimmune Disease

Autor: Ehsanollah Esfandiari, Fang-Ping Huang, Xiao-Qing Wei, Max Field, Foo Y. Liew, Iain B. McInnes, Mousa Komai-Koma, George B. M. Lindop
Rok vydání: 2001
Předmět:
Zdroj: The Journal of Immunology. 167:5338-5347
ISSN: 1550-6606
0022-1767
DOI: 10.4049/jimmunol.167.9.5338
Popis: Serum from patients with systemic lupus erythematosus (SLE) contained significantly higher concentrations of IL-18 than normal individuals. MRL/lpr mice, which develop spontaneous lupus-like autoimmune disease, also had higher serum levels of IL-18 than wild-type MRL/++ mice. Daily injections of IL-18 or IL-18 plus IL-12 resulted in accelerated proteinuria, glomerulonephritis, vasculitis, and raised levels of proinflammatory cytokines in MRL/lpr mice. IL-18-treated MRL/lpr mice also developed a “butterfly” facial rash resembling clinical SLE. In contrast, MRL/lpr mice treated with IL-18 plus IL-12 did not develop a facial rash. The facial lesion in the IL-18-treated mice showed epidermal thickening with intense chronic inflammation accompanied by increased apoptosis, Ig deposition, and early systemic Th2 response compared with control or IL-12 plus IL-18-treated mice. These data therefore show that IL-18 is an important mediator of lupus-like disease and may thus be a novel target for therapeutic intervention of spontaneous autoimmune diseases.
Databáze: OpenAIRE