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http://purl.uniprot.org/citations/22267332http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/22267332http://www.w3.org/2000/01/rdf-schema#comment"

Background

Uveitis, or inflammatory eye disease, is a common extra-articular manifestation of many systemic autoinflammatory diseases involving the joints. Anakinra (recombinant interleukin (IL)-1 receptor antagonist (Ra)) is an effective therapy in several arthritic diseases; yet, few studies have investigated the extent to which IL-1 signalling or IL-1Ra influences the onset and/or severity of uveitis.

Objective

To seek possible links between arthritis and uveitis pathogenesis related to IL-1 signalling.

Methods

The eyes of IL-1Ra-deficient BALB/c mice were monitored histologically and by intravital videomicroscopy to determine if uveitis developed along with the expected spontaneous arthritis in ankles and knees. Expression levels of IL-1R and its negative regulators (IL-1Ra, IL-1RII, IL-1RAcP and single Ig IL-1R-related molecule) in eye and joint tissues were compared. Differences in uveitis induced by intraocular injection of lipopolysaccharide (LPS) in mice lacking IL-1R or IL-1Ra were assessed.

Results

Deficiency in IL-1Ra predisposes to spontaneous arthritis, which is exacerbated by previous systemic LPS exposure. The eye, however, does not develop inflammatory disease despite the progressive arthritis or LPS exposure. Organ-specific expression patterns for IL-1Ra and negative regulators of IL-1 activity were observed that appear to predict predisposition to inflammation in each location in IL-1Ra knockout mice. The eye is extremely sensitive to locally administered LPS, and IL-1Ra deficiency markedly exacerbates the resulting uveitis.

Conclusion

This study demonstrates that IL-1Ra plays an important role in suppressing local responses in eyes injected with LPS and that there is discordance between murine eyes and joints in the extent to which IL-1Ra protects against spontaneous inflammation."xsd:string
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http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Woods A."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Nicklin M.J."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Planck S.R."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Rosenbaum J.T."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Rosenzweig H.L."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/author"Clowers J.S."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/date"2012"xsd:gYear
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/name"Ann Rheum Dis"xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/pages"753-760"xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/title"Impact of IL-1 signalling on experimental uveitis and arthritis."xsd:string
http://purl.uniprot.org/citations/22267332http://purl.uniprot.org/core/volume"71"xsd:string
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