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Aim   To explore the mechanism of resveratrol in reducing the soft tissue damage of osteoarthritis (OA) based on network pharmacology.Methods   Pharmmapper was used to predict the target of resveratrol, OMIM and Genecards were used to collect OA-related disease genes, and David ver 6.8 was used for enrichment analysis. Then, animal experiments were carried out for verification. The rat OA model was established and the rats were randomly divided into 4 groups: model group, resveratrol low-dose group, resveratrol high-dose group, and blank control group for follow-up experiments. Hematoxylin-eosin (HE) staining was used to detect the degree of pathological damage of rat bones and joints. Enzyme-linked immunosorbent assay (ELISA) was used for the content of inflammatory factors. Western blot was used to detect the expression of Toll-like receptor 4 (TLR4), Myeloid differentiation factor 88 (MyD88), nuclear factor kappa B protein (NF- κ B), cysteine protease-9 (CASP-9), Bcl-2 protein, and Bax protein.Results   Through network pharmacological analysis, this study found that resveratrol may regulate the TLR4 signaling pathway, PI3K-Akt signaling pathway, FoxO signaling pathway, Osteoclast differentiation, Rheumatoid arthritis, etc. Animal experiments showed that compared with the model group, the pathological damage of bone and joint in the resveratrol low-dose and high-dose groups was significantly improved. Compared with the model group, the serum levels of IL-1beta, IL-6, IL-17, TNF- α , and MCP-1 in the resveratrol low-dose and high-dose groups were significantly reduced ( P  < 0.05); protein levels of TLR-4, MyD88, and NF- κ B p65 were significantly reduced ( P  < 0.05); caspase-9 and Bax protein levels were significantly reduced ( P  < 0.05), and Bcl-2 was significantly increased ( P  < 0.05).Conclusion   Resveratrol may inhibit the activation of the TLR4-mediated NF- κ B signaling pathway and has a repairing effect on soft tissue damage in OA.

evidence-based complementary and alternative medicine

Exploring the Mechanism of Resveratrol in Reducing the Soft Tissue Damage of Osteoarthritis Based on Network Pharmacology and Experimental Pharmacology