Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

National Institute of Environmental Health Sciences

Use this QR code to view the newest version of this document
Use this QR code to view the newest version of this document

Your Environment. Your Health.

Publication Detail

Title: Podocyte-specific soluble epoxide hydrolase deficiency in mice attenuates acute kidney injury.

Authors: Bettaieb, Ahmed; Koike, Shinichiro; Chahed, Samah; Zhao, Yi; Bachaalany, Santana; Hashoush, Nader; Graham, James; Fatima, Huma; Havel, Peter J; Gruzdev, Artiom; Zeldin, Darryl C; Hammock, Bruce D; Haj, Fawaz G

Published In FEBS J, (2017 07)

Abstract: Podocytes play an important role in maintaining glomerular function, and podocyte injury is a significant component in the pathogenesis of proteinuria. Soluble epoxide hydrolase (sEH) is a cytosolic enzyme whose genetic deficiency and pharmacological inhibition have beneficial effects on renal function, but its role in podocytes remains unexplored. The objective of this study was to investigate the contribution of sEH in podocytes to lipopolysaccharide (LPS)-induced kidney injury. We report increased sEH transcript and protein expression in murine podocytes upon LPS challenge. To determine the function of sEH in podocytes in vivo we generated podocyte-specific sEH-deficient (pod-sEHKO) mice. Following LPS challenge, podocyte sEH-deficient mice exhibited lower kidney injury, proteinuria, and blood urea nitrogen concentrations than controls suggestive of preserved renal function. Also, renal mRNA and serum concentrations of inflammatory cytokines IL-6, IL-1β, and TNFα were significantly lower in LPS-treated pod-sEHKO than control mice. Moreover, podocyte sEH deficiency was associated with decreased LPS-induced NF-κB and MAPK activation and attenuated endoplasmic reticulum stress. Furthermore, the protective effects of podocyte sEH deficiency in vivo were recapitulated in E11 murine podocytes treated with a selective sEH pharmacological inhibitor. Altogether, these findings identify sEH in podocytes as a contributor to signaling events in acute renal injury and suggest that sEH inhibition may be of therapeutic value in proteinuria.Soluble epoxide hydrolase: EC 3.3.2.10.

PubMed ID: 28485854 Exiting the NIEHS site

MeSH Terms: Acute Kidney Injury/enzymology*; Acute Kidney Injury/genetics; Animals; Blood Urea Nitrogen; Cells, Cultured; Cytokines/blood; Cytokines/genetics; Cytokines/metabolism; Epoxide Hydrolases/antagonists & inhibitors; Epoxide Hydrolases/deficiency*; Epoxide Hydrolases/genetics; Gene Expression Regulation/drug effects; Immunoblotting; Kidney/drug effects; Kidney/metabolism; Kidney/pathology; Lipopolysaccharides/pharmacology; Mice, Inbred C57BL; Mice, Knockout; Mice, Transgenic; Microscopy, Fluorescence; Phenylurea Compounds/pharmacology; Piperidines/pharmacology; Podocytes/enzymology*; Proteinuria/enzymology*; Proteinuria/genetics; Reverse Transcriptase Polymerase Chain Reaction; Signal Transduction/genetics; Solubility

Back
to Top