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- W4365479608 abstract "Pseudomonas aeruginosa is a common colonizing pathogen in the upper respiratory tract and is associated with recalcitrant chronic rhinosinusitis (CRS). Herein we sought to characterize the effect of P. aeruginosa-derived flagellin on human sinonasal epithelial cell (HSNEC) immune responses and determine whether these pathways are disrupted in CRS.Air-liquid interface cultures were established from CRS and healthy control donors. Cells were incubated with P. aeruginosa-derived flagellin for 24 hours and transcriptional changes were assessed using whole transcriptome RNA sequencing. Apical and basolateral secretion of the pro-inflammatory cytokines in interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and IL-6 were measured after stimulation by lipopolysaccharide or flagellin and responses were compared between CRS and healthy control patients.HSNECs were weakly responsive to lipopolysaccharide, whereas flagellin stimulated a profound innate immune response dominated by TNF-α, IL-1β, and IL-17 signaling and activation of the IL-17C/IL-23 axis. CRS-derived HNSECs showed an altered innate immune response to flagellin, characterized by a profound increase in TNF-α secretion coupled with reduced IL-6 secretion.Flagellin activates a potent innate immune response in HSNECs characterized by pro-inflammatory mediators and cytokines/chemokines associated with neutrophilic inflammation. HSNECs from CRS patients have a dysregulated innate immune response to flagellin characterized by an imbalance between IL-6 and TNF-α secretion." @default.
- W4365479608 created "2023-04-15" @default.
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- W4365479608 date "2023-05-05" @default.
- W4365479608 modified "2023-10-14" @default.
- W4365479608 title "Epithelial innate immune response to <i>Pseudomonas aeruginosa–</i>derived flagellin in chronic rhinosinusitis" @default.
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- W4365479608 doi "https://doi.org/10.1002/alr.23164" @default.
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