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A scanning electron microscope study of the human glomerulus.

M Arakawa

    The American Journal of Pathology
    |August 1, 1971
    PubMed
    Summary
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    Scanning electron microscopy revealed unique human podocyte structures. Human podocyte foot process morphology differs from rodents, with loss potentially linked to severe proteinuria.

    Area of Science:

    • Nephrology
    • Cell Biology
    • Microscopy

    Background:

    • Podocytes are crucial for kidney filtration.
    • Understanding podocyte structure is key to diagnosing kidney diseases.

    Purpose of the Study:

    • To examine the three-dimensional fine structure of human podocytes.
    • To compare human podocyte morphology with that of rodents.

    Main Methods:

    • Scanning electron microscopy (SEM) was used.
    • Human glomeruli from autopsy and biopsy specimens were analyzed.
    • Specimens were fixed using glutaraldehyde.

    Main Results:

    • SEM clearly demonstrated human podocyte structure and cytoplasmic processes.
    • Human podocytes showed irregular ramification patterns compared to rat and rabbit podocytes.

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  • Intercellular spaces were observed between podocyte peripheries, and terminal process loss was noted in a severe proteinuria case.

    • Conclusions:

    • Human podocyte foot process morphology is distinct from rodents.
    • Podocyte process loss may involve retraction rather than fusion in severe proteinuria.