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- W3046231656 endingPage "102925" @default.
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- W3046231656 abstract "BackgroundCoronavirus induced disease 2019 (COVID-19) can be complicated by severe organ damage leading to dysfunction of the lungs and other organs. The processes that trigger organ damage in COVID-19 are incompletely understood.MethodsSamples were donated from hospitalized patients. Sera, plasma, and autopsy-derived tissue sections were examined employing flow cytometry, enzyme-linked immunosorbent assays, and immunohistochemistry.Patient findingsHere, we show that severe COVID-19 is characterized by a highly pronounced formation of neutrophil extracellular traps (NETs) inside the micro-vessels. Intravascular aggregation of NETs leads to rapid occlusion of the affected vessels, disturbed microcirculation, and organ damage. In severe COVID-19, neutrophil granulocytes are strongly activated and adopt a so-called low-density phenotype, prone to spontaneously form NETs. In accordance, markers indicating NET turnover are consistently increased in COVID-19 and linked to disease severity. Histopathology of the lungs and other organs from COVID-19 patients showed congestions of numerous micro-vessels by aggregated NETs associated with endothelial damage.InterpretationThese data suggest that organ dysfunction in severe COVID-19 is associated with excessive NET formation and vascular damage.FundingDeutsche Forschungsgemeinschaft (DFG), EU, Volkswagen-Stiftung" @default.
- W3046231656 created "2020-08-07" @default.
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- W3046231656 date "2020-08-01" @default.
- W3046231656 modified "2023-10-18" @default.
- W3046231656 title "Vascular occlusion by neutrophil extracellular traps in COVID-19" @default.
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- W3046231656 doi "https://doi.org/10.1016/j.ebiom.2020.102925" @default.
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