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Related Experiment Videos

Progressive passive Heymann nephritis in the rat.

A Z Barabas, N Boyd, J Cornish

    Laboratory Investigation; a Journal of Technical Methods and Pathology
    |October 1, 1982
    PubMed
    Summary

    This study shows that autoimmune antibodies against kidney tubules drive progressive Heymann nephritis in rats. Immune complex deposition in glomeruli correlates with proteinuria in this model of kidney disease.

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    Area of Science:

    • Nephrology
    • Immunology
    • Pathology

    Background:

    • Heymann nephritis is a rat model of membranous nephropathy.
    • The role of autoantibodies in progressive kidney damage requires further elucidation.

    Purpose of the Study:

    • To investigate the immunopathogenesis of progressive passive Heymann nephritis.
    • To identify the autoantigen involved in the progression of kidney disease.

    Main Methods:

    • Induction of progressive passive Heymann nephritis in rats using specific antisera.
    • Immunofluorescence and electron microscopy to analyze glomerular pathology.
    • Elution of gamma-globulin from kidneys to identify autoantibodies.

    Main Results:

    • Rats developed severe proteinuria and glomerular immune deposits resembling Heymann nephritis.
    • Eluted gamma-globulin contained autologous IgG reactive with renal proximal tubule brush borders.
    • This autoantibody was present in both proteinuric and non-proteinuric animals.

    Conclusions:

    • Progression of Heymann nephritis involves autoantibodies to a tubular nephritogenic antigen.
    • Proteinuria is linked to immune complex deposition in glomeruli.
    • Identified a key autoimmune component in the pathogenesis of this kidney disease model.

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