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• W4385642359 abstract "Articular cartilage degeneration caused by chondrocyte damage is the primary pathological mechanism of osteoarthritis (OA). Oxidative stress is correlated with chondrocyte injury by potentiating ferroptosis, a newly identified form of cell death. Given the effects of Tanshinone IIA (Tan IIA) on alleviating oxidative stress, we further explored whether Tan IIA inhibited chondrocyte death and cartilage degeneration by decreasing ferroptosis. ATDC5 chondrocytes were treated with lipopolysaccharides (LPS) and Tan IIA, and cell viability was assessed using cell counting kit-8 (CCK-8) assays. Matrix metalloproteinase-13 (MMP13), a disintegrin and metalloproteinase with thrombospondin motif-5 (ADAMTS5), and type II collagen (Col II) levels were measured using quantitative real-time polymerase chain reaction (qRT‒PCR), western blotting, and immunofluorescence (IF) analysis. We demonstrated that Tan IIA treatment prominently increased ATDC5 cell viability and decreased cell apoptosis in the presence of LPS-induced stress. MMP13 and ADAMTS5 expression was increased, and Col II expression was decreased in ATDC5 cells after LPS stimulation, whereas these changes were reversed by Tan IIA. Mechanistically, Tan IIA inhibited LPS-induced ferroptosis in ATDC5 cells, as indicated by decreased levels of iron, reactive oxygen species, and malondialdehyde and increased GSH levels. Importantly, a ferroptosis agonist partially abrogated the effect of Tan IIA on alleviating chondrocyte damage and death. Taken together, these results suggest that Tan IIA ameliorates chondrocyte apoptosis and cartilage degeneration by inhibiting ferroptosis and may be a potential therapeutic agent for OA." @default.
• W4385642359 created "2023-08-08" @default.
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• W4385642359 date "2023-01-01" @default.
• W4385642359 modified "2023-09-23" @default.
• W4385642359 title "Tanshinone IIA alleviates chondrocyte apoptosis and extracellular matrix degeneration by inhibiting ferroptosis" @default.
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• W4385642359 doi "https://doi.org/10.1515/biol-2022-0666" @default.
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• W4385642359 hasPublicationYear "2023" @default.
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