Journal
ARTHRITIS AND RHEUMATISM
Volume 63, Issue 2, Pages 488-491Publisher
WILEY
DOI: 10.1002/art.30112
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Funding
- Australian National Health and Medical Research Council [399700, 508600]
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Objective. Mosquito-borne alphaviruses such as chikungunya virus, o'nyong-nyong virus, and Ross River virus (RRV) cause sporadic, sometimes large, outbreaks of rheumatic disease worldwide. This study was designed to test the effect of treating RRV-induced arthritis using the anti-tumor necrosis factor (anti-TNF) drug etanercept in a mouse model of rheumatic disease. Methods. Mice were infected with RRV and treated with etanercept. Weight gain was measured, tissue viral titers were determined, and histologic changes in muscle and joint tissues were assessed. Results. RRV-infected mice treated with etanercept showed decreased weight gain, higher viral titers in muscle, joints, and blood, and more tissue damage and inflammatory cell recruitment than RRV-infected mice without treatment. Conclusion. Anti-TNF therapy is unlikely to be useful in treating alphaviral arthritides. During alphaviral epidemics, careful monitoring of patients being treated with anti-TNF agents may be warranted.
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