Journal
JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
Volume 19, Issue 1, Pages 39-46Publisher
AMER SOC NEPHROLOGY
DOI: 10.1681/ASN.2006090998
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Funding
- National Institute for Health Research [NF-SI-0507-10315] Funding Source: researchfish
- Wellcome Trust Funding Source: Medline
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Acute renal failure resulting from hypoperfusion and hypoxia is a significant clinical problem. Hypoxia activates the heterodimeric transcription factor hypoxia inducible factor (HIF), leading to changes in gene expression that promote tissue adaptation and survival. To determine whether H IF may protect the kidney from ischemia-reperfusion injury, we subjected hif1a(+/-) and hif2a(+/-) mice to renal ischemia-reperfusion injury. Injury was substantially more severe in hif(+/-) than in littermate controls, consistent with a protective role for HIF. Because wild-type mice exhibited submaximal HIF accumulation in response to no-flow ischemia, we tested compounds that might augment the protective HIF response following ischemia-reperfusion in these animals. We found that L-Mimosine and dimethyloxalylglycine, two small molecules that activate HIF by inhibiting HIF hydroxylases, protected mouse kidneys from ischemia-reperfusion injury. Therefore, pharmacological activation of HIF may offer an effective strategy to protect the kidney from ischemic injury.
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