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Molecular Pharmacology

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Research ArticleArticle

Hepatic Ischemia-Reperfusion Induces Renal Heme Oxygenase-1 via NF-E2-Related Factor 2 in Rats and Mice

Yuji Tanaka, Jonathan M. Maher, Chuan Chen and Curtis D. Klaassen
Molecular Pharmacology March 2007, 71 (3) 817-825; DOI: https://doi.org/10.1124/mol.106.029033
Yuji Tanaka
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Jonathan M. Maher
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Chuan Chen
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Curtis D. Klaassen
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Abstract

Hepatic ischemia-reperfusion (IR) results in Kupffer cell activation and subsequent tumor necrosis factor (TNF) α release, leading to localized hepatic injury and remote organ dysfunction. Heme oxygenase (HO)-1 is an enzyme that is induced by various stimuli, including proinflammatory cytokines, and exerts antioxidative and anti-inflammatory functions. Up-regulation of HO-1 is known to protect against hepatic IR injury, but the effects of hepatic IR on the kidney are poorly understood. Thus, the purpose of this study was to determine whether hepatic IR and resultant Kupffer cell activation alters renal HO-1 expression. Male Sprague-Dawley rats and wild-type and NF-E2-related factor 2 (Nrf2)-null mice were subjected to 60 min of partial hepatic ischemia, and at various times thereafter, blood, liver, and kidneys were collected. After reperfusion, 1) creatinine clearance decreased; 2) HO-1 mRNA and protein expression in liver and kidney markedly increased; 3) renal NAD(P)H: quinone oxidoreductase 1 mRNA expression was induced; 4) serum TNFα levels increased; 5) Nrf2 translocation into the nucleus of renal tissue increased; and 6) renal and urinary 15-deoxy-Δ12,14-prostaglandin J2 (15-d-PGJ2) levels increased. Kupffer cell depletion by pretreating with gadolinium chloride 1) attenuated increased mRNA expression of HO-1 in kidney; 2) attenuated the increase in TNFα; 3) inhibited the increase in Nrf2 nuclear translocation; and 4) tended to attenuate renal 15-d-PGJ2 levels. Whereas renal HO-1 mRNA expression increased in wild-type mice, it was attenuated in Nrf2-null mice. These results suggest that renal HO-1 is induced via Nrf2 to protect the kidney from remote organ injury after hepatic IR.

Footnotes

  • This work was supported by National Institutes of Health grants ES09649, ES09716, and ES07079.

  • Article, publication date, and citation information can be found at http://molpharm.aspetjournals.org.

  • doi:10.1124/mol.106.029033.

  • ABBREVIATIONS: IR, ischemia-reperfusion; TNFα, tumor necrosis factor α; HO-1, heme oxygenase-1; Nrf2, NF-E2-related factor 2; 15-d-PGJ2, 15-deoxy-Δ12,14-prostaglandin J2; AP-1, activator protein 1; GdCl3, Gadolinium chloride (III) hexahydrate; Keap1, Kelch-like ECH associated protein 1; COX, cyclooxygenase; ELISA, enzyme-linked immunosorbent assay; LPS, lipopolysaccharide; RLU, relative light units; GSH, glutathione.

    • Received July 19, 2006.
    • Accepted December 5, 2006.
  • The American Society for Pharmacology and Experimental Therapeutics
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Molecular Pharmacology: 71 (3)
Molecular Pharmacology
Vol. 71, Issue 3
1 Mar 2007
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Research ArticleArticle

Hepatic Ischemia-Reperfusion Induces Renal Heme Oxygenase-1 via NF-E2-Related Factor 2 in Rats and Mice

Yuji Tanaka, Jonathan M. Maher, Chuan Chen and Curtis D. Klaassen
Molecular Pharmacology March 1, 2007, 71 (3) 817-825; DOI: https://doi.org/10.1124/mol.106.029033

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Research ArticleArticle

Hepatic Ischemia-Reperfusion Induces Renal Heme Oxygenase-1 via NF-E2-Related Factor 2 in Rats and Mice

Yuji Tanaka, Jonathan M. Maher, Chuan Chen and Curtis D. Klaassen
Molecular Pharmacology March 1, 2007, 71 (3) 817-825; DOI: https://doi.org/10.1124/mol.106.029033
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