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Arthritis Res Ther. 2010;12(3):210. doi: 10.1186/ar3045. Epub 2010 Jun 28.

Central role of nitric oxide in the pathogenesis of rheumatoid arthritis and systemic lupus erythematosus.

Author information

1
Department of Rheumatology, Semmelweis University, Medical School, Budapest, Hungary. gyorgyngy@gmail.com

Abstract

Nitric oxide (NO) has been shown to regulate T cell functions under physiological conditions, but overproduction of NO may contribute to T lymphocyte dysfunction. NO-dependent tissue injury has been implicated in a variety of rheumatic diseases, including systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Several studies reported increased endogenous NO synthesis in both SLE and RA, and recent evidence suggests that NO contributes to T cell dysfunction in both autoimmune diseases. The depletion of intracellular glutathione may be a key factor predisposing patients with SLE to mitochondrial dysfunction, characterized by mitochondrial hyperpolarization, ATP depletion and predisposition to death by necrosis. Thus, changes in glutathione metabolism may influence the effect of increased NO production in the pathogenesis of autoimmunity.

PMID:
20609263
PMCID:
PMC2911902
DOI:
10.1186/ar3045
[Indexed for MEDLINE]
Free PMC Article
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