MitoTEMPO treatment avoided the loss of fenestrations and mobile blebbing in diabetes (Fig
MitoTEMPO treatment avoided the loss of fenestrations and mobile blebbing in diabetes (Fig. of fenestrae. Glomerular endothelial mitochondrial disorder was associated with increased glomerular endothelin-1 receptor type A (Ednra) manifestation and increased circulating endothelin-1 (Edn1). Selective Ednra blockade or mitochondrial-targeted reactive o2 species scavenging prevented mitochondrial oxidative tension of endothelial cells and ameliorated diabetes-induced endothelial damage, podocyte loss, albuminuria, and glomerulosclerosis. In human DKD, increased urine 8-oxo-deoxyguanosine was associated with fast DKD development, and biopsies from individuals with DKD showed increased mitochondrial DNA damage associated with glomerular endothelial EDNRA manifestation. Our studies show that DKD susceptibility was linked to mitochondrial dysfunction, mediated largely by Edn1Ednra in glomerular endothelial cells symbolizing an early event in DKD progression, and suggest that combination talk between glomerular endothelial injury and podocytes contributes to defects…