IL-4 alone and in combination with IL-10 protects against blood-induced cartilage damage

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Abstract

Objective: It has been reported that interleukin (IL)-10 limits blood-induced cartilage damage. Our aim was to study the effect of IL-4 alone and in combination with IL-10 on blood-induced cartilage damage. Design: Healthy human full thickness cartilage explants were cultured for 4 days in the presence of 50% v/v blood. IL-4, IL-10, or a combination of both cytokines was added during blood exposure. Cartilage matrix turnover was determined after a recovery period; additionally cytokine production, chondrocyte apoptosis, and expression of the IL-4 and IL-10 receptors were analyzed directly after exposure. Results: Blood-induced damage to the cartilage matrix was limited by IL-4 in a dose-dependent way (. P<. 0.05). Also IL-10 limited this damage, although to a lesser extent (. P<. 0.03). The effect of IL-4 plus IL-10 was more pronounced and protective than IL-10 alone (. P<. 0.05). Production of IL-1β and tumor necrosis factor (TNF)-α was limited by both IL-4 and IL-10 (. P<. 0.05), but more strongly by IL-4. Blood-induced apoptosis of chondrocytes was limited by IL-4 and the combination, and not by IL-10 alone. No direct beneficial effect of IL-4 or IL-10 on cartilage was found, however, the chondrocyte receptor expression of both cytokine receptors was upregulated by exposure to blood. Conclusions: This study demonstrates that IL-4 alone and in combination with IL-10 prevents blood-induced cartilage damage. Expectedly, anti-inflammatory effects on monocytes in the blood fraction and protective effects on chondrocytes are both involved. IL-4 in combination with IL-10 might be used to prevent blood-induced joint damage as a result of trauma or surgery. © 2012 Osteoarthritis Research Society International.

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Van Meegeren, M. E. R., Roosendaal, G., Jansen, N. W. D., Wenting, M. J. G., Van Wesel, A. C. W., Van Roon, J. A. G., & Lafeber, F. P. J. G. (2012). IL-4 alone and in combination with IL-10 protects against blood-induced cartilage damage. Osteoarthritis and Cartilage, 20(7), 764–772. https://doi.org/10.1016/j.joca.2012.04.002

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