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- W2120290311 startingPage "993" @default.
- W2120290311 abstract "Oxidized phospholipids that are generated during inflammation exert anti-inflammatory properties and prevent death during murine endotoxemia. Oxidized 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphorylcholine (OxPAPC) inhibits the interaction of LPS with LPS-binding protein and CD14. In this study, we determined the functional properties of OxPAPC and potential interference with CD14 during abdominal sepsis caused by Escherichia coli. Administration of OxPAPC rendered mice highly susceptible to E. coli peritonitis, as indicated by an accelerated mortality and enhanced bacterial outgrowth and dissemination. CD14(-/-) mice also displayed increased mortality and bacterial outgrowth and OxPAPC did not further impair host defense in these animals. The mechanisms by which OxPAPC and CD14 deficiency impaired the immune response differed: whereas CD14(-/-) mice demonstrated a strongly reduced recruitment of phagocytes to the site of the infection, OxPAPC did not influence the influx of inflammatory cells but strongly diminished the phagocytosing capacity of neutrophils and macrophages by a CD14-independent mechanism. Furthermore, OxPAPC potently inhibited uptake of fluorospheres as well as receptor-mediated endocytosis and fluid-phase pinocytosis. These data suggest that oxidized phospholipids such as produced during inflammatory reactions may contribute to mortality during Gram-negative sepsis in vivo via impairment of the phagocytic properties of professional phagocytes." @default.
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- W2120290311 date "2007-01-15" @default.
- W2120290311 modified "2023-10-13" @default.
- W2120290311 title "Oxidized Phospholipids Inhibit Phagocytosis and Impair Outcome in Gram-Negative Sepsis In Vivo" @default.
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- W2120290311 doi "https://doi.org/10.4049/jimmunol.178.2.993" @default.
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