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Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach
09:32

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach

Published on: September 26, 2019

[Disturbances of antimicrobial lipids in atopic dermatitis]

Bodo Melnik1

  • 1Dermatologie, Umweltmedizin und Gesundheitstheorie, Fachbereich Humanwissenshaften, Universität of Osnabrück, Germany. melnik@t-online.de

Journal Der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG
|March 1, 2006
PubMed

Insights

Patients with atopic dermatitis have lower levels of antimicrobial lipids, like free sphingosines, increasing infection risk from Staphylococcus aureus. Topical antimicrobial lipids offer new treatment options for this common skin condition.

Area of Science:

  • Dermatology
  • Immunology
  • Biochemistry

Background:

  • Atopic dermatitis (AD) patients show increased susceptibility to skin infections, particularly Staphylococcus aureus colonization.
  • Antimicrobial peptides (cathelicidin, human beta-defensin-2) and stratum corneum lipids are crucial for skin defense but are often underexpressed or diminished in AD.
  • Free fatty acids, glucosylceramides, and free sphingosines are key antimicrobial lipids in the stratum corneum.

Purpose of the Study:

  • To review the biochemistry and function of antimicrobial lipids in atopic dermatitis.
  • To highlight the role of diminished free sphingosine levels in AD and Staphylococcus aureus colonization.
  • To explore the potential of topical antimicrobial lipids as a therapeutic strategy for AD.

Main Methods:

  • Review of current literature on antimicrobial lipids and their role in atopic dermatitis.
  • Analysis of the biochemical properties and functions of stratum corneum lipids.
  • Examination of the impact of staphylococcal enterotoxin B on T-cell regulation in AD.

Main Results:

  • Lower levels of free sphingosines in the stratum corneum of atopic dermatitis patients correlate with Staphylococcus aureus colonization.
  • Staphylococcus aureus superantigens, like staphylococcal enterotoxin B, can dysregulate T-cell responses in AD.
  • Antimicrobial lipids demonstrate antiseptic and immunomodulatory properties.

Conclusions:

  • Diminished free sphingosines contribute to increased susceptibility to bacterial colonization in atopic skin.
  • Topical antimicrobial lipids present a promising avenue for antiseptic and immunomodulatory treatment of atopic dermatitis.
  • Targeting antimicrobial lipids could offer novel therapeutic and preventive strategies for atopic dermatitis and its associated infections.

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