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2015 ; 10
(4
): e0125176
Nephropedia Template TP
gab.com Text
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English Wikipedia
Protective role of PGC-1? in diabetic nephropathy is associated with the
inhibition of ROS through mitochondrial dynamic remodeling
#MMPMID25853493
Guo K
; Lu J
; Huang Y
; Wu M
; Zhang L
; Yu H
; Zhang M
; Bao Y
; He JC
; Chen H
; Jia W
PLoS One
2015[]; 10
(4
): e0125176
PMID25853493
show ga
The overproduction of mitochondrial reactive oxygen species (ROS) plays a key
role in the pathogenesis of diabetic nephropathy (DN). However, the underlying
molecular mechanism remains unclear. Our aim was to investigate the role of
PGC-1? in the pathogenesis of DN. Rat glomerular mesangial cells (RMCs) were
incubated in normal or high glucose medium with or without the
PGC-1?-overexpressing plasmid (pcDNA3-PGC-1?) for 48 h. In the diabetic rats,
decreased PGC-1? expression was associated with increased mitochondrial ROS
generation in the renal cortex, increased proteinuria, glomerular hypertrophy,
and higher glomerular 8-OHdG (a biomarker for oxidative stress). In vitro,
hyperglycemia induced the downregulation of PGC-1?, which led to increased DRP1
expression, increased mitochondrial fragmentation and damaged network structure.
This was associated with an increase in ROS generation and mesangial cell
hypertrophy. These pathological changes were reversed in vitro by the
transfection of pcDNA3-PGC-1?. These data suggest that PGC-1? may protect DN via
the inhibition of DRP1-mediated mitochondrial dynamic remodeling and ROS
production. These findings may assist the development of novel therapeutic
strategies for patients with DN.