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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2016 ; 7
(ä): 12177
Nephropedia Template TP
Luo B
; Wang J
; Liu Z
; Shen Z
; Shi R
; Liu YQ
; Liu Y
; Jiang M
; Wu Y
; Zhang Z
Nat Commun
2016[Jul]; 7
(ä): 12177
PMID27397585
show ga
Inflammation resolution is an active process, the failure of which causes
uncontrolled inflammation which underlies many chronic diseases. Therefore,
endogenous pathways that regulate inflammation resolution are fundamental and of
wide interest. Here, we demonstrate that phagocyte respiratory burst-induced
hypoxia activates macrophage erythropoietin signalling to promote acute
inflammation resolution. This signalling is activated following acute but not
chronic inflammation. Pharmacological or genetical inhibition of the respiratory
burst suppresses hypoxia and macrophage erythropoietin signalling.
Macrophage-specific erythropoietin receptor-deficient mice and chronic
granulomatous disease (CGD) mice, which lack the capacity for respiratory burst,
display impaired inflammation resolution, and exogenous erythropoietin enhances
this resolution in WT and CGD mice. Mechanistically, erythropoietin increases
macrophage engulfment of apoptotic neutrophils via PPAR?, promotes macrophage
removal of debris and enhances macrophage migration to draining lymph nodes.
Together, our results provide evidences of an endogenous pathway that regulates
inflammation resolution, with important implications for treating inflammatory
conditions.