992 resultados para IL-22
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Iowa Lottery Authority Retailer Information Newsletter
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Référence bibliographique : Rol, 58141
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Iowa Lottery Authority Retailer Information Newsletter
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Référence bibliographique : Rol, 58140
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Iowa Lottery Authority Retailer Information Newsletter
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Référence bibliographique : Rol, 58134
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Référence bibliographique : Rol, 58133
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Iowa Lottery Authority Retailer Information Newsletter
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Iowa Lottery Authority Retailer Information Newsletter
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Référence bibliographique : Rol, 57726
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Basic calcium phosphate (BCP) crystals are associated with severe osteoarthritis and acute periarticular inflammation. Three main forms of BCP crystals have been identified from pathological tissues: octacalcium phosphate, carbonate-substituted apatite, and hydroxyapatite. We investigated the proinflammatory effects of these BCP crystals in vitro with special regard to the involvement of the NLRP3-inflammasome in THP-1 cells, primary human monocytes and macrophages, and mouse bone marrow-derived macrophages (BMDM). THP-1 cells stimulated with BCP crystals produced IL-1β in a dose-dependent manner. Similarly, primary human cells and BMDM from wild-type mice also produced high concentrations of IL-1β after crystal stimulation. THP-1 cells transfected with short hairpin RNA against the components of the NLRP3 inflammasome and mouse BMDM from mice deficient for NLRP3, apoptosis-associated speck-like protein, or caspase-1 did not produce IL-1β after BCP crystal stimulation. BCP crystals induced macrophage apoptosis/necrosis as demonstrated by MTT and flow cytometric analysis. Collectively, these results demonstrate that BCP crystals induce IL-1β secretion through activating the NLRP3 inflammasome. Furthermore, we speculate that IL-1 blockade could be a novel strategy to inhibit BCP-induced inflammation in human disease.
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Référence bibliographique : Rol, 57301
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Référence bibliographique : Rol, 57300
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[Discours. 1914-12-22]