Renal Ischemia – Reperfusion Injury: Contribution of Nitric Oxide and Renal Blood Flow

Nephron ◽  
1998 ◽  
Vol 80 (4) ◽  
pp. 458-467 ◽  
Author(s):  
Elisheva Mashiach ◽  
Shifra Sela ◽  
Josi Winaver ◽  
Shaul M. Shasha ◽  
Batya Kristal
2021 ◽  
Vol 32 (3) ◽  
pp. 553-562
Author(s):  
Takuto Chiba ◽  
Débora M. Cerqueira ◽  
Yao Li ◽  
Andrew J. Bodnar ◽  
Elina Mukherjee ◽  
...  

BackgroundDamage to the renal microvasculature is a hallmark of renal ischemia-reperfusion injury (IRI)–mediated AKI. The miR-17∼92 miRNA cluster (encoding miR-17, -18a, -19a, -20a, -19b-1, and -92a-1) regulates angiogenesis in multiple settings, but no definitive role in renal endothelium during AKI pathogenesis has been established.MethodsAntibodies bound to magnetic beads were utilized to selectively enrich for renal endothelial cells from mice. Endothelial-specific miR-17∼92 knockout (miR-17∼92endo−/−) mice were generated and given renal IRI. Mice were monitored for the development of AKI using serum chemistries and histology and for renal blood flow using magnetic resonance imaging (MRI) and laser Doppler imaging. Mice were treated with miRNA mimics during renal IRI, and therapeutic efficacies were evaluated.ResultsmiR-17, -18a, -20a, -19b, and pri–miR-17∼92 are dynamically regulated in renal endothelial cells after renal IRI. miR-17∼92endo−/− exacerbates renal IRI in male and female mice. Specifically, miR-17∼92endo−/− promotes renal tubular injury, reduces renal blood flow, promotes microvascular rarefaction, increases renal oxidative stress, and promotes macrophage infiltration to injured kidneys. The potent antiangiogenic factor thrombospondin 1 (TSP1) is highly expressed in renal endothelium in miR-17∼92endo−/− after renal IRI and is a target of miR-18a and miR-19a/b. miR-17∼92 is critical in the angiogenic response after renal IRI, which treatment with miR-18a and miR-19b mimics can mitigate.ConclusionsThese data suggest that endothelial-derived miR-17∼92 stimulates a reparative response in damaged renal vasculature during renal IRI by regulating angiogenic pathways.


2004 ◽  
Vol 4 (10) ◽  
pp. 1605-1613 ◽  
Author(s):  
Ana Rodriguez-Pena ◽  
Francisco J. Garcia-Criado ◽  
Nelida Eleno ◽  
Miguel Arevalo ◽  
Jose M. Lopez-Novoa

2002 ◽  
Vol 61 (3) ◽  
pp. 862-871 ◽  
Author(s):  
Prabal K. Chatterjee ◽  
Nimesh S.A. Patel ◽  
Espen O. Kvale ◽  
Salvatore Cuzzocrea ◽  
Paul A.J. Brown ◽  
...  

2002 ◽  
Vol 10 (4) ◽  
pp. 277-284 ◽  
Author(s):  
Ernani Luı́s Rhoden ◽  
Cláudia Ramos Rhoden ◽  
Márcio Luı́s Lucas ◽  
Luiz Pereira-Lima ◽  
Cláudio Zettler ◽  
...  

2021 ◽  
Vol 22 (20) ◽  
pp. 10914
Author(s):  
Stephanie M. Mutchler ◽  
Mahpara Hasan ◽  
Donald E. Kohan ◽  
Thomas R. Kleyman ◽  
Roderick J. Tan

Acute kidney injury due to renal ischemia-reperfusion injury (IRI) may lead to chronic or end stage kidney disease. A greater understanding of the cellular mechanisms underlying IRI are required to develop therapeutic options aimed at limiting or reversing damage from IRI. Prior work has shown that deletion of the α subunit of the epithelial Na+ channel (ENaC) in endothelial cells protects from IRI by increasing the availability of nitric oxide. While canonical ENaCs consist of an α, β, and γ subunit, there is evidence of non-canonical ENaC expression in endothelial cells involving the α subunit. We therefore tested whether the deletion of the γ subunit of ENaC also protects mice from IRI to differentiate between these channel configurations. Mice with endothelial-specific deletion of the γ subunit and control littermates were subjected to unilateral renal artery occlusion followed by 48 h of reperfusion. No significant difference was noted in injury between the two groups as assessed by serum creatinine and blood urea nitrogen, levels of specific kidney injury markers, and histological examination. While deletion of the γ subunit did not alter infiltration of immune cells or cytokine message, it was associated with an increase in levels of total and phosphorylated endothelial nitric oxide synthase (eNOS) in the injured kidneys. Our studies demonstrate that even though deletion of the γ subunit of ENaC may allow for greater activation of eNOS, this is not sufficient to prevent IRI, suggesting the protective effects of α subunit deletion may be due, in part, to other mechanisms.


2017 ◽  
Vol 32 (suppl_3) ◽  
pp. iii452-iii452
Author(s):  
Jin Sug Kim ◽  
Hyung Joon Ahn ◽  
Da Rae Kim ◽  
Su Woong Jung ◽  
Eun Ji Park ◽  
...  

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