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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+Am+Soc+Nephrol
2015 ; 26
(3
): 597-610
Nephropedia Template TP
gab.com Text
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English Wikipedia
Hypertension is a major contributor to 20-hydroxyeicosatetraenoic acid-mediated
kidney injury in diabetic nephropathy
#MMPMID25071086
Gangadhariah MH
; Luther JM
; Garcia V
; Paueksakon P
; Zhang MZ
; Hayward SW
; Love HD
; Falck JR
; Manthati VL
; Imig JD
; Schwartzman ML
; Zent R
; Capdevila JH
; Pozzi A
J Am Soc Nephrol
2015[Mar]; 26
(3
): 597-610
PMID25071086
show ga
In the kidney, 20-hydroxyeicosatetraenoic acid (20-HETE) is a primary cytochrome
P450 4 (Cyp4)-derived eicosanoid that enhances vasoconstriction of renal vessels
and induces hypertension, renal tubular cell hypertrophy, and podocyte apoptosis.
Hypertension and podocyte injury contribute to diabetic nephropathy and are
strong predictors of disease progression. In this study, we defined the
mechanisms whereby 20-HETE affects the progression of diabetic nephropathy. We
used Cyp4a14KO male mice that exhibit androgen-sensitive hypertension due to
increased Cyp4a12-mediated 20-HETE production. We show that, upon induction of
diabetes type 1 via streptozotocin injection, Cyp4a14KO male mice developed worse
renal disease than streptozotocin-treated wild-type mice, characterized by
increased albuminuria, mesangial expansion, glomerular matrix deposition, and
thickness of the glomerular basement membranes. Castration blunted
androgen-mediated Cyp4a12 synthesis and 20-HETE production, normalized BP, and
ameliorated renal damage in diabetic Cyp4a14KO mice. Notably, treatment with a
20-HETE antagonist or agents that normalized BP without affecting Cyp4a12
expression and 20-HETE biosynthesis also ameliorated diabetes-mediated renal
damage and albuminuria in Cyp4a14KO male mice. Taken together, these results
suggest that hypertension is the major contributor to 20-HETE-driven
diabetes-mediated kidney injury.