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- W3149192013 abstract "The proinflammatory cytokine interleukin-1 β (IL-1β)-mediated cellular senescence in chondrocytes is involved in the development and pathological progression of osteoarthritis (OA). Feprazone, a nonsteroidal anti-inflammatory drug (NSAID) and a cyclooxygenase (COX) inhibitor, is widely used in clinics. This study aims to investigate whether Feprazone has a protective effect against IL-1β-induced cellular senescence in human chondrocytes. In this study, C-28/I2 chondrocytes were stimulated with IL-1β (10 ng/mL) in the presence or absence of Feprazone (10 and 20 μM). Cellular senescence was assessed using senescence-associated β-galactosidase (SA-β-Gal) staining. The cell cycle was examined using flow cytometry. Gene and protein expressions were determined with real-time polymerase chain reaction (PCR) and western blot analysis. We found that treatment with Feprazone ameliorated IL-1β-induced increase in cellular senescence. Feprazone increased telomerase activity and prevented cell cycle arrest in the G0/G1 phase. We also found that Feprazone reduced the expressions of plasminogen activator inhibitor-1 (PAI-1) and p21, two important regulators of cellular senescence. Additionally, treatment with Feprazone reduced the expressions of matrix metalloprotein (MMP-13) and a disintegrin-like and metalloproteinase with thrombospondin type-1 motif-5 (ADAMTS-5). Interestingly, Feprazone prevented the activation of nuclear factor kappa-B (NF-κB) by preventing nuclear translocation of NF-κB p65 and the luciferase activity of the NF-κB promoter. The results also show that Feprazone increased nuclear levels of nuclear factor erythroid 2-related factor-2 (Nrf2) and reduced the production of reactive oxygen species (ROS). Importantly, silencing of Nrf2 abolished the protective effects of Feprazone against IL-1β-induced NF-κB activation and cellular senescence. These findings shed light on the potential use of Feprazone in the treatment of OA based on a novel mechanism." @default.
- W3149192013 created "2021-04-13" @default.
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- W3149192013 date "2021-03-31" @default.
- W3149192013 modified "2023-10-02" @default.
- W3149192013 title "Feprazone Mitigates IL-1β-Induced Cellular Senescence in Chondrocytes" @default.
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- W3149192013 doi "https://doi.org/10.1021/acsomega.0c06066" @default.
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