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2018 ; 9
(17
): 13276-13286
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Neutrophil extracellular traps promote lipopolysaccharide-induced airway
inflammation and mucus hypersecretion in mice
#MMPMID29568356
Zou Y
; Chen X
; Xiao J
; Bo Zhou D
; Xiao Lu X
; Li W
; Xie B
; Kuang X
; Chen Q
Oncotarget
2018[Mar]; 9
(17
): 13276-13286
PMID29568356
show ga
Bacterial lipopolysaccharide (LPS) contributes to airway inflammation and mucus
hypersecretion in chronic airway inflammatory diseases, such as chronic
obstructive pulmonary disease (COPD) and cystic fibrosis (CF). Neutrophil
extracellular traps (NETs) are extracellular meshworks composed of DNA fibers and
antimicrobial proteins. Although NET formation has been detected in COPD and CF
patients, how NETs contribute to these diseases is poorly understood. This study
was performed to clarify the effects and mechanisms of action of NETs in airway
inflammation and mucus hypersecretion. We created a murine model of LPS-induced
airway inflammation and mucus hypersecretion, and found that LPS-induced NET
formation was degraded by aerosolized DNase I treatment in mice. Degradation of
NETs by aerosolized DNase I reduced LPS-induced airway inflammation and mucus
hypersecretion in mice, this reduction correlated with suppression of TLR4/NF-?B
signaling pathway. More importantly, NETs promoted LPS-induced production of
IL-1?, IL-6 and TNF-? in macrophages. These results suggest NET degradation using
aerosolized DNase I is a potential new therapeutic strategy for treating COPD and
CF.