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Related Experiment Videos

Mannitol potentiates cyclosporine nephrotoxicity.

F P Brunner, M Hermle, M J Mihatsch

    Clinical Nephrology
    |January 1, 1986
    PubMed
    Summary
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    Cyclosporine (CyA) combined with mannitol in rats caused acute renal failure (ARF) and kidney tubule damage. Mannitol may potentiate cyclosporine

    Area of Science:

    • Nephrology
    • Pharmacology
    • Toxicology

    Background:

    • Cyclosporine (CyA) is an immunosuppressant drug with known nephrotoxic potential.
    • Mannitol is an osmotic diuretic commonly used in clinical settings.

    Purpose of the Study:

    • To investigate a potential drug interaction between cyclosporine and mannitol.
    • To assess the effect of combined administration on renal function and kidney histology in a rat model.

    Main Methods:

    • Female Wistar rats were infused with cyclosporine (CyA) and mannitol, CyA alone, or mannitol alone.
    • Renal function was assessed by monitoring urine output, creatinine clearance, and proximal tubular pressures.
    • Kidney histology was examined for signs of damage, including vacuolization, inclusion bodies, and microcalcifications.

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    Main Results:

    • 6 out of 10 rats receiving both CyA and mannitol developed severe acute renal failure (ARF).
    • Histological examination revealed massive vacuolization of proximal tubular epithelia in rats with ARF.
    • Rats receiving only CyA or mannitol did not develop ARF, though some showed minor histological changes.

    Conclusions:

    • Concomitant administration of cyclosporine and mannitol can lead to severe acute renal failure in rats.
    • Mannitol may potentiate the nephrotoxicity of cyclosporine, potentially through mechanisms affecting proximal tubular cells.
    • Further investigation is warranted to elucidate the precise mechanism of this drug interaction.