Elevated circulating levels of the interferon-γ-induced chemokines are associated with disease activity and cutaneous manifestations in adult-onset Still's disease.

Abstract

C-X-C motif chemokine 9 (CXCL9), CXCL10, and CXCL11 are produced in response to interferon-γ (IFN-γ) and trigger inflammation with the accumulation of activated lymphocytes. It appears that these chemokines could play a role in the pathogenesis of adult-onset Still's disease (AOSD). Therefore, we investigated the associations between the levels of these chemokine and clinical manifestations in patients with active AOSD. Serum levels of IFN-γ, CXCL9, CXCL10 and CXCL11 were determined using enzyme-linked immunosorbent assays. IFN-γ levels were higher in AOSD patients than in rheumatoid arthritis (RA) patients (p = 0.001) or healthy controls (HCs) (p = 0.032). AOSD patients also exhibited higher levels of CXCL9, CXCL10, and CXCL11 compared with RA patients (p < 0.001) and HCs (p < 0.001). In follow-up AOSD patients after treatment with corticosteroid, the levels of CXCL9, CXCL10 and CXCL11 fell significantly, whereas IFN-γ levels were not significantly different. On immunohistochemistry, the percentage of CXCL10-positive inflammatory cells was higher in skin biopsy samples from AOSD patients than in those from normal control (p = 0.012), eczema (p = 0.019), and psoriasis (p = 0.009) groups. Levels of the IFN-γ-induced chemokines, CXCL9, CXCL10 and CXCL11, were elevated and correlated with several disease activity markers. These interferon-γ-induced chemokines may contribute to inflammatory responses and skin manifestations in AOSD.

• Authors: Jae Ho Han, Chang-Hee Suh, Ju-Yang Jung, Mi-Hyun Ahn, Mi Hwa Han, Ji Eun Kwon, Hyunee Yim, Hyoun-Ah Kim
• Journal: Scientific reports (Sci Rep) Vol. 7 Pg. 46652 (04 24 2017) ISSN: 2045-2322 [Electronic] England
• PMID: 28436448 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Chemokines
• IFNG protein, human
• Interferon-gamma

Topics

• Adult
• Age of Onset
• Chemokines (blood)
• Female
• Humans
• Interferon-gamma (blood)
• Male
• Middle Aged
• Psoriasis (blood)
• Skin Diseases (blood)
• Still's Disease, Adult-Onset (blood)