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- W2986800741 abstract "Abstract Inflammation-related progressive lung destruction is the leading causes of premature death in cystic fibrosis (CF), a genetic disorder caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. However, therapeutic targeting of inflammation has been hampered by a lack of understanding of the links between a dysfunctional CFTR and the deleterious innate immune response in CF. Herein, we used CFTR-depleted zebrafish larvae as an innovative in vivo vertebrate model, mimicking aspects of the inflammatory pathology of CF-related lung, to understand how CFTR dysfunction leads to abnormal inflammatory status in CF. We show that impaired CFTR-mediated inflammation correlates with an exuberant neutrophilic response after injury: CF zebrafish exhibit enhanced and sustained accumulation of neutrophils at wounds. Excessive epithelial oxidative responses drive enhanced neutrophil recruitment towards wounds. Persistence of neutrophils at inflamed sites is associated with impaired reverse migration of neutrophils and reduction in neutrophil apoptosis. As a consequence, the increased number of neutrophils at wound sites causes tissue damage and abnormal tissue repair. Importantly, the pro-resolution molecule Tanshinone IIA successfully re-balances inflammation both by accelerating inflammation resolution and by improving tissue repair in CFTR-deficient animal. Larval zebrafish giving a unique insight into innate immune cell function in CFTR deficiency, our findings bring important new understanding of the mechanisms underlying the inflammatory pathology in CF, which could be addressed therapeutically to prevent inflammatory lung damage in CF patients with potential improvements in disease outcomes." @default.
- W2986800741 created "2019-11-22" @default.
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- W2986800741 date "2019-11-14" @default.
- W2986800741 modified "2023-10-18" @default.
- W2986800741 title "Deletion of<i>cftr</i>leads to an excessive neutrophilic response and defective tissue repair in a zebrafish model of sterile inflammation" @default.
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- W2986800741 doi "https://doi.org/10.1101/842195" @default.
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