Abstract
Osteoarthritis (OA) is a chronic inflammatory disease that is the basis of cartilage extracellular matrix degeneration and joint inflammation. Scutellarin is an herbal flavonoid glucuronide, isolated from the Chinese traditional herb Erigeron breviscapus, has been reported to have anti-inflammatory effect. Here, we showed that Scutellarin could inhibit inflammation and protects cartilage from degeneration in vitro and in vivo. Scutellarin downregulate the mRNA and protein expression of MMP1, MMP13, and ADAMTS-5, Wnt3a, Frizzled7 and promote the expression of Collagen II and Aggrecan. Moreover, scutellarin inhibit the migration of β-catenin and phosphorylation of p38 into the nucleus, which may relate to the mediation of the Wnt/β-catenin and MAPK signaling pathway. Furthermore, scutellarin significantly inhibit the cartilage degradation of DMM-induced OA mice by safranin-O and fast green staining. In conclusion, our study indicates that scutellarin may be a potential drug for the treatment of OA.
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