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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+Immunol+Res
2017 ; 2017
(ä): 4609502
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Endothelial STAT3 Modulates Protective Mechanisms in a Mouse Ischemia-Reperfusion
Model of Acute Kidney Injury
#MMPMID29181415
Dube S
; Matam T
; Yen J
; Mang HE
; Dagher PC
; Hato T
; Sutton TA
J Immunol Res
2017[]; 2017
(ä): 4609502
PMID29181415
show ga
STAT3 is a transcriptional regulator that plays an important role in coordinating
inflammation and immunity. In addition, there is a growing appreciation of the
role STAT3 signaling plays in response to organ injury following diverse insults.
Acute kidney injury (AKI) from ischemia-reperfusion injury is a common clinical
entity with devastating consequences, and the recognition that endothelial
alterations contribute to kidney dysfunction in this setting is of growing
interest. Consequently, we used a mouse with a genetic deletion of Stat3
restricted to the endothelium to examine the role of STAT3 signaling in the
pathophysiology of ischemic AKI. In a mouse model of ischemic AKI, the loss of
endothelial STAT3 signaling significantly exacerbated kidney dysfunction,
morphologic injury, and proximal tubular oxidative stress. The increased severity
of ischemic AKI was associated with more robust endothelial-leukocyte adhesion
and increased tissue accumulation of F4/80(+) macrophages. Moreover, important
proximal tubular adaptive mechanisms to injury were diminished in association
with decreased tissue mRNA levels of the epithelial cell survival cytokine IL-22.
In aggregate, these findings suggest that the endothelial STAT3 signaling plays
an important role in limiting kidney dysfunction in ischemic AKI and that
selective pharmacologic activation of endothelial STAT3 signaling could serve as
a potential therapeutic target.