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• W3114785005 abstract "Abstract Articular cartilage damage and chondrocyte apoptosis are common features of rheumatoid arthritis and osteoarthritis. Recently, curcumin has been reported to exhibit protective effects on degeneration in articular cartilage diseases. However, the effects and mechanisms of curcumin on articular chondrocyte injury remain to be elucidated. The aim of the present study is to investigate the chondroprotective mechanisms of curcumin on interleukin‐1β (IL‐1β)‐induced chondrocyte apoptosis in vitro. The results revealed that IL‐1β decreased cell viability and induced apoptosis in primary articular chondrocytes. Curcumin pretreatment reduced IL‐1β‐induced articular chondrocyte apoptosis. In addition, treatment with curcumin increased autophagy in articular chondrocytes and protected against IL‐1β‐induced apoptosis. The curcumin‐mediated protection against IL‐1β induced apoptosis was abolished when cells were treated with the autophagy inhibitor 3‐methyladenine or transfected with Beclin‐1 small interfering RNA. Furthermore, IL‐1β stimulation significantly increased the phosphorylation levels of nuclear factor (NF)‐κB p65 and glycogen synthase kinase‐3β, and decreased the phosphorylation levels of β‐catenin in articular chondrocytes, and these alterations to the phosphorylation levels were partly reversed by treatment with curcumin. Dual‐luciferase and electrophoretic mobility shift assays demonstrated that IL‐1β increased NF‐κB p65 promoter activity in chondrocytes, and this was also reversed by curcumin. Pretreatment with the NF‐κB inhibitor pyrrolidine dithiocarbamate enhanced the protective effects of curcumin on chondrocyte apoptosis, but Wnt/β‐catenin inhibitor, XAV‐939, did not exhibit this effect. Molecular docking and dynamic simulation studies results showed that curcumin could bound to RelA (p65) protein. These results indicate that curcumin may suppress IL‐1β‐induced chondrocyte apoptosis through activating autophagy and restraining NF‐κB signaling pathway." @default.
• W3114785005 created "2021-01-05" @default.
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• W3114785005 date "2021-01-25" @default.
• W3114785005 modified "2023-10-07" @default.
• W3114785005 title "Curcumin ameliorates IL‐1β‐induced apoptosis by activating autophagy and inhibiting the NF‐κB signaling pathway in rat primary articular chondrocytes" @default.
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• W3114785005 doi "https://doi.org/10.1002/cbin.11541" @default.
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