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Related Experiment Videos

Cell proliferation in psoriatics.

G K Steigleder, H Pullmann

    Acta Dermato-Venereologica. Supplementum
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Psoriasis involves longer DNA synthesis times in skin cells, even in unaffected areas. This change, measurable after tape stripping, could help diagnose latent psoriasis.

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    Area of Science:

    • Dermatology
    • Cell Biology
    • Biochemistry

    Background:

    • Psoriasis is a chronic inflammatory skin condition.
    • Keratinocyte DNA synthesis time (ts) is altered in psoriatic lesions.
    • The behavior of ts in unaffected psoriatic skin is not fully understood.

    Purpose of the Study:

    • To investigate the DNA synthesis time (ts) of keratinocytes in different stages of psoriasis.
    • To assess the impact of epidermal barrier disruption on keratinocyte ts.
    • To evaluate the potential diagnostic utility of ts variations for latent psoriasis.

    Main Methods:

    • Measurement of DNA synthesis time (ts) in keratinocytes.
    • Standardized removal of the horny layer using adhesive tape stripping.
    • Comparison of ts in healthy skin, psoriatic skin (lesional and unaffected), and atopic dermatitis skin.

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    Main Results:

    • Keratinocyte ts is characteristically lengthened in unaffected, early, and developed psoriatic lesions.
    • Tape stripping significantly increased ts in unaffected psoriatic skin.
    • ts remained unchanged in healthy skin but shortened in atopic dermatitis skin after tape stripping.

    Conclusions:

    • Prolonged keratinocyte DNA synthesis time is a feature of psoriasis, extending to unaffected skin.
    • The response of ts to epidermal barrier disruption differs between psoriasis, healthy skin, and atopic dermatitis.
    • Variations in ts following standardized irritation may serve as a diagnostic marker for latent psoriasis.