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Related Experiment Videos

[Stratum corneum and nail lipids in patients with atopic dermatitis. Decrease in ceramides--a pathogenetic factor in

J Hollmann1, B C Melnik, M S Lee

  • 1Hautklinik, Heinrich-Heine-Universität Düsseldorf.

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|May 1, 1991
PubMed
Summary

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Dry skin in atopic dermatitis is linked to a weaker skin barrier. Studies show lower ceramide levels in atopic subjects, suggesting impaired ceramide synthesis contributes to dry skin conditions.

Area of Science:

  • Dermatology
  • Biochemistry
  • Skin Barrier Function

Context:

  • Atopic dermatitis frequently presents with dry skin (xerosis).
  • Epidermal barrier dysfunction, characterized by increased transepidermal water loss and reduced stratum corneum hydration, is a hallmark of atopic dermatitis.
  • Stratum corneum lipids play a crucial role in maintaining the skin's permeability barrier.

Purpose:

  • To analyze stratum corneum and nail lipids in atopic subjects.
  • To investigate the lipid profile, specifically ceramides and free sterols, in relation to epidermal barrier function in atopic xerosis.

Summary:

  • High-performance thin-layer chromatography (HPTLC) was used to analyze plantar and lumbar stratum corneum lipids, as well as nail lipids, from atopic subjects and controls.
  • Atopic subjects exhibited a reduced percentage of ceramides within their total lipid composition.

Related Experiment Videos

  • A diminished ratio of ceramides to free sterols was observed in the stratum corneum of atopic individuals compared to controls.

    • Impact:

    • Findings suggest that impaired ceramide synthesis may be a significant factor in the development of atopic xerosis.
    • This research highlights the critical role of ceramides in maintaining skin barrier integrity in atopic dermatitis.
    • Understanding these lipid alterations could inform future therapeutic strategies for managing dry skin in atopic patients.