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Bone and Cartilage Destruction in Rheamatoid Arthritis. IL-6 inhibitors prevent bone loss and cartilage degeneration in rheumatoid arthritis. Murakami Miho 1 , Nishimoto Norihiro 2 1Department of Molecular Regulation for Intractable Diseases,Institute of Medical Science, Tokyo Medical University, Japan.Osaka Rheumatology Clinic, Japan. 2Department of Molecular Regulation for Intractable Diseases,Institute of Medical Science, Tokyo Medical University, Japan.Osaka Rheumatology Clinic, Japan. pp.1851-1857
Published Date 2015/11/28
DOI https://doi.org/10.20837/4201512111
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 Dysregulation of cytokines, including interleukin-6(IL-6), is involved in joint destruction in rheumatoid arthritis(RA). The concentration of IL-6 is increased not only in the affected joints but also in the serum. Locally, IL-6 provides the formation of pannus through the synthesis of vascular endothelial growth factor (VEGF). In addition, IL-6 contributes to the production of matrix metalloproteinases which digest collagen and proteoglycan of cartilage. Furthermore, IL-6 induces the differentiation and activation of osteoclasts. IL-6 can be delivered systemically to a similar extent as hormones, may induce systemic osteoporosis. Tocilizumab(TCZ), a humanized anti-IL-6 receptor antibody, inhibiting IL-6 signaling, has provided beneficial outcomes, such as achievement of clinical remission, protective effects against bone and cartilage destruction. Because of the beneficial outcomes, new drugs inhibiting IL-6 signaling are developed, and the clinical trials are ongoing.



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電子版ISSN 印刷版ISSN 0917-5857 医薬ジャーナル社

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