Abstract:
:Hypoxia-inducible factor (HIF)-1 mediates hypoxia- and chronic kidney disease-induced fibrotic events. Here, we assessed whether HIF-1 blockade attenuates the manifestations of diabetic nephropathy in a type 1 diabetic animal model, OVE26. YC-1 [3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole], an HIF-1 inhibitor, reduced whole kidney glomerular hypertrophy, mesangial matrix expansion, extracellular matrix accumulation, and urinary albumin excretion as well as NOX4 protein expression and NADPH-dependent reactive oxygen species production, while blood glucose levels remained unchanged. The role of NOX oxidases in HIF-1-mediated extracellular matrix accumulation was explored in vitro using glomerular mesangial cells. Through a series of genetic silencing and adenoviral overexpression studies, we have defined GLUT1 as a critical downstream target of HIF-1α mediating high glucose-induced matrix expression through the NADPH oxidase isoform, NOX4. Together, our data suggest that pharmacological inhibition of HIF-1 may improve clinical manifestations of diabetic nephropathy.
journal_name
Diabetesjournal_title
Diabetesauthors
Nayak BK,Shanmugasundaram K,Friedrichs WE,Cavaglierii RC,Patel M,Barnes J,Block Kdoi
10.2337/db15-0519subject
Has Abstractpub_date
2016-05-01 00:00:00pages
1387-97issue
5eissn
0012-1797issn
1939-327Xpii
db15-0519journal_volume
65pub_type
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