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. 2022 Aug 19;14:934406. doi: 10.3389/fnagi.2022.934406

Figure 1.

Figure 1

Exercise inducted effects of Iris and its regulation in OA. Irisin is secreted by skeletal muscle in response to exercise stimulation and increases bone density, enhances the mechanical support of cartilage by subchondral bone, improves cartilage tissue, and promotes chondrocyte proliferation.