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2017 ; 7
(1
): 11010
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gab.com Text
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English Wikipedia
Interleukin-22 level is negatively correlated with neutrophil recruitment in the
lungs in a Pseudomonas aeruginosa pneumonia model
#MMPMID28887540
Broquet A
; Jacqueline C
; Davieau M
; Besbes A
; Roquilly A
; Martin J
; Caillon J
; Dumoutier L
; Renauld JC
; Heslan M
; Josien R
; Asehnoune K
Sci Rep
2017[Sep]; 7
(1
): 11010
PMID28887540
show ga
Pseudomonas aeruginosa is a major threat for immune-compromised patients.
Bacterial pneumonia can induce uncontrolled and massive neutrophil recruitment
ultimately leading to acute respiratory distress syndrome and epithelium damage.
Interleukin-22 plays a central role in the protection of the epithelium. In this
study, we aimed to evaluate the role of interleukin-22 and its soluble receptor
IL-22BP in an acute Pseudomonas aeruginosa pneumonia model in mice. In this
model, we noted a transient increase of IL-22 during Pseudomonas aeruginosa
challenge. Using an antibody-based approach, we demonstrated that IL-22
neutralisation led to increased susceptibility to infection and to lung damage
correlated with an increase in neutrophil accumulation in the lungs. On the
contrary, rIL-22 administration or IL-22BP neutralisation led to a decrease in
mouse susceptibility and lung damage associated with a decrease in neutrophil
accumulation. This study demonstrated that the IL-22/IL-22BP system plays a major
role during Pseudomonas aeruginosa pneumonia by moderating neutrophil
accumulation in the lungs that ultimately leads to epithelium protection.