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    J Am Soc Nephrol. 2008 Mar;19(3):486-94. Epub 2008 Feb 6.

    HIF activation protects from acute kidney injury.

    Weidemann A, Bernhardt WM, Klanke B, Daniel C, Buchholz B, Câmpean V, Amann K, Warnecke C, Wiesener MS, Eckardt KU, Willam C.

    Source

    Medical Clinic 4, Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen Nuremberg, Krankenhausstrasse 12, D - 91054 Erlangen, Germany.

    Abstract

    The contribution of hypoxia to cisplatin-induced renal tubular injury is controversial. Because the hypoxia-inducible factor (HIF) pathway is a master regulator of adaptation to hypoxia, we measured the effects of cisplatin on HIF accumulation in vitro and in vivo, and tested whether hypoxic preconditioning is protective against cisplatin-induced injury. We found that cisplatin did not stabilize HIF-1alpha protein in vitro or in vivo under normoxic conditions. However, hypoxic preconditioning of cisplatin-treated proximal tubular cells in culture reduced apoptosis in an HIF-1alpha-dependent fashion and increased cell proliferation as measured by BrdU incorporation. In vivo, rats preconditioned with carbon monoxide before cisplatin administration had significantly better renal function than rats kept in normoxic conditions throughout. Moreover, the histomorphological extent of renal damage and tubular apoptosis was reduced by the preconditional treatment. Therefore, development of pharmacologic agents to induce renal HIF might provide a new approach to ameliorate cisplatin-induced nephrotoxicity.

    PMID:
    18256363
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2391048
    Free PMC Article

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