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. 2022 Jun 24;13(6):567. doi: 10.1038/s41419-022-04962-y

Fig. 7. Model of PTX3 regulation of synovial macrophage polarization and disrupted chondrocyte homeostasis during OA.

Fig. 7

Decreased miR-224-5p promotes M1-polarized OA macrophage and chondrocyte secretion of PTX3. Increased PTX3 promotes increased M1 polarization of synovial macrophages and the secretion of inflammatory cytokines that disrupt chondrocyte homeostasis, accelerating OA progression.