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2015 ; 10
(10
): e0141099
Nephropedia Template TP
gab.com Text
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English Wikipedia
Renoprotective Mechanism of Remote Ischemic Preconditioning Based on
Transcriptomic Analysis in a Porcine Renal Ischemia Reperfusion Injury Model
#MMPMID26489007
Yoon YE
; Choi KH
; Kim SY
; Cho YI
; Lee KS
; Kim KH
; Yang SC
; Han WK
PLoS One
2015[]; 10
(10
): e0141099
PMID26489007
show ga
Ischemic preconditioning (IPC) is a well-known phenomenon in which tissues are
exposed to a brief period of ischemia prior to a longer ischemic event. This
technique produces tissue tolerance to ischemia reperfusion injury (IRI).
Currently, IPC's mechanism of action is poorly understood. Using a porcine single
kidney model, we performed remote IPC with renal IRI and evaluated the IPC
mechanism of action. Following left nephrectomy, 15 female Yorkshire pigs were
divided into three groups: no IPC and 90 minutes of warm ischemia (control),
remote IPC immediately followed by 90 minutes of warm ischemia (rIPCe), and
remote IPC with 90 minutes of warm ischemia performed 24 hours later (rIPCl).
Differential gene expression analysis was performed using a porcine-specific
microarray. The microarray analysis of porcine renal tissues identified 1,053
differentially expressed probes in preconditioned pigs. Among these, 179 genes
had altered expression in both the rIPCe and rIPCl groups. The genes were largely
related to oxidation reduction, apoptosis, and inflammatory response. In the
rIPCl group, an additional 848 genes had altered expression levels. These genes
were primarily related to immune response and inflammation, including those
coding for cytokines and cytokine receptors and those that play roles in the
complement system and coagulation cascade. In the complement system, the membrane
attack complex was determined to be sublytic, because it colocalized with
phosphorylated extracellular signal-regulated kinase. Furthermore, alpha 2
macroglobulin, tissue plasminogen activator, uterine plasmin trypsin inhibitor,
and arginase-1 mRNA levels were elevated in the rIPCl group. These findings
indicate that remote IPC produces renoprotective effects through multiple
mechanisms, and these effects develop over a long timeframe rather than
immediately following IPC.