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2015 ; 8
(7
): 7896-904
Nephropedia Template TP
gab.com Text
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English Wikipedia
Glutamine ameliorates intestinal ischemia-reperfusion Injury in rats by
activating the Nrf2/Are signaling pathway
#MMPMID26339354
Wang AL
; Niu Q
; Shi N
; Wang J
; Jia XF
; Lian HF
; Liu Z
; Liu CX
Int J Clin Exp Pathol
2015[]; 8
(7
): 7896-904
PMID26339354
show ga
Ischemia-reperfusion (I/R)-mediated intestinal mucosal injury is usually induced
by oxygen-derived toxic free radicals from the xanthine oxidase system after
reperfusion, but the detailed molecular mechanisms underlying glutamine
protection is still unclear. This study aims to elucidate whether glutamine
prevents damage to the intestinal mucosa after I/R in rats and to investigate
signaling by the Nrf2/ARE pathway induced by GLN in a rat model. Our results
revealed that Glutamine pretreatment reduced jejunum injury and microvascular
hyper-permeability induced by I/R. MDA level significantly increased while the
SOD and GSH-Px levels decreased in the I/R group compared to the sham group and
the GLN-I/R group. Both the mRNA and protein levels of the Nrf2 and HO-1 were
significantly elevated by GLN pretreatment when compared to the I/R group. GLN
treatment also elevated Bcl-2 levels, and accordingly suppressed apoptotic damage
in the jejunum cells shown by decreased cleaved caspase-3 level. Mechanistic
investigation revealed that GLN treatment augmented binding of Nrf2 onto Bcl2
gene promoter. These results indicate that glutamine has protective effects on
I/R in vivo by activating the Nrf2/ARE signaling pathway to inhibit ROS
production and reduce intestinal apoptosis.