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- W2891549401 abstract "Objectives: Interleukin (IL)-1β and matrix metalloproteinases (MMPs) play important roles in the pathogenesis of osteoarthritis. On the other hand, plasminogen activator inhibitor-1 (PAI-1), an inhibitor of fibrinolysis, exerts functions in the pathogenesis of various diseases. However, the functional roles of PAI-1 in the chondrocytes have been still remained unknown.Methods: In the present study, we investigated the roles of PAI-1 in the effects of IL-1β on the chondrocytes using wild-type and PAI-1-deficient mice.Results: IL-1β significantly elevated PAI-1 mRNA levels in the chondrocytes from wild-type mice. PAI-1 deficiency significantly blunted the mRNA levels of TGF-β and IL-6 enhanced by IL-1β in murine chondrocytes. Moreover, PAI-1 deficiency significantly decreased the mRNA levels of MMP-13, -3 and -9 as well as MMP-13 activity enhanced by IL-1β in the chondrocytes. In addition, PAI-1 deficiency significantly reversed type II collagen mRNA levels suppressed by IL-1β in the chondrocytes. On the other hand, active PAI-1 treatment significantly enhanced the mRNA levels of MMP-13, -3 and -9 as well as decreased type II collagen mRNA levels in the chondrocytes from wild-type mice.Conclusion: We first demonstrated that PAI-1 is involved in MMP expression enhanced by IL-1β in murine chondrocytes. PAI-1 might be crucial for the cartilage matrix degradation and the impaired chondrogenesis by IL-1β in mice." @default.
- W2891549401 created "2018-09-27" @default.
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- W2891549401 date "2018-11-28" @default.
- W2891549401 modified "2023-09-28" @default.
- W2891549401 title "Plasminogen activator inhibitor-1 is involved in interleukin-1β-induced matrix metalloproteinase expression in murine chondrocytes" @default.
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- W2891549401 doi "https://doi.org/10.1080/14397595.2018.1525018" @default.
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