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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 Sci+Rep
2017 ; 7
(1
): 15190
Nephropedia Template TP
gab.com Text
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English Wikipedia
Targeted mitochondrial therapy using MitoQ shows equivalent renoprotection to
angiotensin converting enzyme inhibition but no combined synergy in diabetes
#MMPMID29123192
Ward MS
; Flemming NB
; Gallo LA
; Fotheringham AK
; McCarthy DA
; Zhuang A
; Tang PH
; Borg DJ
; Shaw H
; Harvie B
; Briskey DR
; Roberts LA
; Plan MR
; Murphy MP
; Hodson MP
; Forbes JM
Sci Rep
2017[Nov]; 7
(1
): 15190
PMID29123192
show ga
Mitochondrial dysfunction is a pathological mediator of diabetic kidney disease
(DKD). Our objective was to test the mitochondrially targeted agent, MitoQ, alone
and in combination with first line therapy for DKD. Intervention therapies (i)
vehicle (D); (ii) MitoQ (DMitoQ;0.6?mg/kg/day); (iii) Ramipril (DRam;3?mg/kg/day)
or (iv) combination (DCoAd) were administered to male diabetic db/db mice for 12
weeks (n?=?11-13/group). Non-diabetic (C) db/m mice were followed concurrently.
No therapy altered glycaemic control or body weight. By the study end, both
monotherapies improved renal function, decreasing glomerular hyperfiltration and
albuminuria. All therapies prevented tubulointerstitial collagen deposition, but
glomerular mesangial expansion was unaffected. Renal cortical concentrations of
ATP, ADP, AMP, cAMP, creatinine phosphate and ATP:AMP ratio were increased by
diabetes and mostly decreased with therapy. A higher creatine phosphate:ATP ratio
in diabetic kidney cortices, suggested a decrease in ATP consumption. Diabetes
elevated glucose 6-phosphate, fructose 6-phosphate and oxidised (NAD+ and NADP+)
and reduced (NADH) nicotinamide dinucleotides, which therapy decreased generally.
Diabetes increased mitochondrial oxygen consumption (OCR) at complex II-IV. MitoQ
further increased OCR but decreased ATP, suggesting mitochondrial uncoupling as
its mechanism of action. MitoQ showed renoprotection equivalent to ramipril but
no synergistic benefits of combining these agents were shown.