title: The role of heme oxygenase-1 in systemic-onset juvenile idiopathic arthritis.
abstract: We have determined the serum levels of heme oxygenase-1 (HO-1) in 56 patients with systemic-onset juvenile idiopathic arthritis (s-JIA) and compared these with serum HO-1 levels in healthy controls and patients with other pediatric rheumatic diseases. Serum HO-1 levels were measured by the sandwich enzyme-linked immunosorbent assay. The mean serum HO-1 level in s-JIA patients during the active phase was 123.6 +/- 13.83 ng/ml, which was significantly higher than that in patients with polyarticular juvenile idiopathic arthritis (p-JIA), Kawasaki disease, systemic lupus erythematosus or mixed connective tissue disease (P < 0.0005). The serum levels of HO-1, cytokines and cytokine receptors in patients with s-JIA were also assessed at both the active and inactive phases. The serum HO-1 level in patients with s-JIA in the active phase was found to be significantly greater than that in patients with the disease in the inactive phase (P < 0.0001). An assessment of the relationships between serum HO-1 levels and other laboratory parameters or cytokines in patients with s-JIA did not reveal any strong correlations. These results suggest that the serum level of HO-1 may be a useful marker for the differential diagnosis of s-JIA. Further study will be necessary to elucidate the mechanism of HO-1 production and to clarify the role of HO-1 in the disease process.
authors.affiliation: Department of Pediatrics, Yokohama City University School of Medicine, Kanazawa-ku, Yokohama, Kanagawa, Japan. aki.takahashi1975@nifty.com
authors.forename: Akitaka
authors.initials: A
authors.lastname: Takahashi
authors.forename: Masaaki
authors.initials: M
authors.lastname: Mori
authors.forename: Takuya
authors.initials: T
authors.lastname: Naruto
authors.forename: Shoko
authors.initials: S
authors.lastname: Nakajima
authors.forename: Takako
authors.initials: T
authors.lastname: Miyamae
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Imagawa
authors.forename: Shumpei
authors.initials: S
authors.lastname: Yokota
mesh_terms: D001171:Arthritis, Juvenile / Q000201:enzymology*; D015415:Biomarkers / Q000097:blood; D016022:Case-Control Studies; D002648:Child; D005260:Female; D051547:Heme Oxygenase-1 / Q000097:blood*; D006801:Humans; D008297:Male; D012372:ROC Curve
chemical_list: D015415:Biomarkers; D051547:Heme Oxygenase-1