{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T16:41:11Z","timestamp":1787848871195,"version":"build-2784847793"},"reference-count":43,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2009,9,29]],"date-time":"2009-09-29T00:00:00Z","timestamp":1254182400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatism"],"published-print":{"date-parts":[[2009,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>Studies have suggested that rheumatoid arthritis (RA) and osteoarthritis (OA) share common characteristics. The highly selective A<jats:sub>3<\/jats:sub> adenosine receptor agonist CF101 was recently defined as a potent antiinflammatory agent for the treatment of RA. The purpose of this study was to examine the effects of CF101 on the clinical and pathologic manifestations of OA in an experimental animal model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>OA was induced in rats by monosodium iodoacetate, and upon disease onset, oral treatment with CF101 (100 \u03bcg\/kg given twice daily) was initiated. The A<jats:sub>3<\/jats:sub> adenosine receptor antagonist MRS1220 (100 \u03bcg\/kg given twice daily) was administered orally, 30 minutes before CF101 treatment. The OA clinical score was monitored by knee diameter measurements and by radiographic analyses. Histologic analyses were performed following staining with hematoxylin and eosin, Safranin O\u2013fast green, or toluidine blue, and histologic changes were scored according to a modified Mankin system. Signaling proteins were assayed by Western blotting; apoptosis was detected via immunohistochemistry and TUNEL analyses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>CF101 induced a marked decrease in knee diameter and improved the changes noted on radiographs. Administration of MRS1220 counteracted the effects of CF101. CF101 prevented cartilage damage, osteoclast\/osteophyte formation, and bone destruction. In addition, CF101 markedly reduced pannus formation and lymphocyte infiltration. Mechanistically, CF101 induced deregulation of the NF\u2010\u03baB signaling pathway, resulting in down\u2010regulation of tumor necrosis factor \u03b1. Consequently, CF101 induced apoptosis of inflammatory cells that had infiltrated the knee joints; however, it prevented apoptosis of chondrocytes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>CF101 deregulated the NF\u2010\u03baB signaling pathway involved in the pathogenesis of OA. CF101 induced apoptosis of inflammatory cells and acted as a cartilage protective agent, which suggests that it would be a suitable candidate drug for the treatment of OA.<\/jats:p><\/jats:sec>","DOI":"10.1002\/art.24817","type":"journal-article","created":{"date-parts":[[2009,9,29]],"date-time":"2009-09-29T05:09:22Z","timestamp":1254200962000},"page":"3061-3071","source":"Crossref","is-referenced-by-count":101,"title":["Induction of an antiinflammatory effect and prevention of cartilage damage in rat knee osteoarthritis by CF101 treatment"],"prefix":"10.1002","volume":"60","author":[{"given":"S.","family":"Bar\u2010Yehuda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Rath\u2010Wolfson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Del 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