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Murine Model of Epicutaneously-Induced Immunomodulation
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Published on: June 24, 2025

Allergy and the skin.

C Incorvaia1, F Frati, N Verna

  • 1Allergy/Pulmonary Rehabilitation Unit, ICP Hospital, Milan, Italy. cristoforo.incorvaia@gmail.com

Clinical and Experimental Immunology
|September 6, 2008
PubMed
Summary
This summary is machine-generated.

Atopic dermatitis (AD) involves skin barrier dysfunction, allowing allergens to trigger systemic responses and potentially asthma. Filaggrin mutations and specific cytokines like IL-31 are key factors in AD and related allergic conditions.

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Area of Science:

  • Immunology
  • Dermatology
  • Allergology

Background:

  • Allergic skin disorders, including atopic dermatitis (AD), arise from complex interactions between skin barrier defects and environmental triggers.
  • Filaggrin gene mutations are strongly linked to allergen sensitization and asthma development in AD patients.
  • Impaired skin barrier function facilitates allergen penetration, leading to systemic immune responses.

Purpose of the Study:

  • To elucidate the intricate mechanisms underlying atopic dermatitis (AD) pathogenesis.
  • To highlight the role of skin barrier integrity and immune cell activation in systemic allergic responses.
  • To identify key cytokines and cellular pathways involved in AD and its association with asthma.

Main Methods:

  • Review of current literature on AD pathogenesis, focusing on skin barrier function, allergen sensitization, and immune responses.
  • Analysis of the roles of specific immune cells, such as Langerhans cells and T helper type 2 (Th2) cells.
  • Examination of the involvement of key cytokines (IL-5, IL-13, TNF-alpha, IL-17, IL-31) and cell surface receptors (e.g., IgE receptor, CLA).

Main Results:

  • Skin barrier dysfunction, particularly filaggrin mutations, promotes allergen sensitization and systemic reactions.
  • Langerhans cells and Th2 cells play critical roles in allergen capture, presentation, and the inflammatory cascade.
  • Specific cytokines (IL-5, IL-13, TNF-alpha, IL-17, IL-31) and skin-homing receptors (CLA) are implicated in AD and airway inflammation.

Conclusions:

  • Atopic dermatitis pathogenesis is a complex interplay of skin barrier defects and immune system activation.
  • Understanding these mechanisms, including the role of filaggrin, cytokines, and specific T cell subsets, is crucial for managing AD and associated allergic diseases like asthma.
  • Targeting these pathways offers potential therapeutic strategies for allergic skin and airway inflammation.