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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 J+Cell+Mol+Med
2017 ; 21
(9
): 1967-1978
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Ablation of endothelial prolyl hydroxylase domain protein-2 promotes renal
vascular remodelling and fibrosis in mice
#MMPMID28266128
Wang S
; Zeng H
; Chen ST
; Zhou L
; Xie XJ
; He X
; Tao YK
; Tuo QH
; Deng C
; Liao DF
; Chen JX
J Cell Mol Med
2017[Sep]; 21
(9
): 1967-1978
PMID28266128
show ga
Accumulating evidence demonstrates that hypoxia-inducible factor (HIF-?)
hydroxylase system has a critical role in vascular remodelling. Using an
endothelial-specific prolyl hydroxylase domain protein-2 (PHD2) knockout
(PHD2(EC) KO) mouse model, this study investigates the regulatory role of
endothelial HIF-? hydroxylase system in the development of renal fibrosis.
Knockout of PHD2 in EC up-regulated the expression of HIF-1? and HIF-2?,
resulting in a significant decline of renal function as evidenced by elevated
levels of serum creatinine. Deletion of PHD2 increased the expression of Notch3
and transforming growth factor (TGF-?1) in EC, thus further causing glomerular
arteriolar remodelling with an increased pericyte and pericyte coverage. This was
accompanied by a significant elevation of renal resistive index (RI). Moreover,
knockout of PHD2 in EC up-regulated the expression of fibroblast-specific
protein-1 (FSP-1) and increased interstitial fibrosis in the kidney. These
alterations were strongly associated with up-regulation of Notch3 and TGF-?1. We
concluded that the expression of PHD2 in endothelial cells plays a critical role
in renal fibrosis and vascular remodelling in adult mice. Furthermore, these
changes were strongly associated with up-regulation of Notch3/TGF-?1 signalling
and excessive pericyte coverage.