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Related Experiment Videos

Immunopathogenesis of psoriasis.

Robert Sabat1, Sandra Philipp, Conny Höflich

  • 1Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology, University Hospital Charité, Berlin, Germany. robert.sabat@charite.de

Experimental Dermatology
|September 12, 2007
PubMed
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Psoriasis pathogenesis involves distinct immune cell stages, challenging the T1 cell dominance theory. New models explain varied therapy responses and predict future treatment success for this chronic skin condition.

Area of Science:

  • Immunodermatology
  • Chronic inflammatory skin diseases

Background:

  • Psoriasis is a chronic skin disease affecting 1.5% of Caucasians, marked by distinct skin lesions and immune cell infiltration.
  • The traditional view emphasizes T helper 1 (Th1) cells in psoriasis initiation and maintenance.
  • Recent findings on Th17 cells, regulatory T cells, dendritic cells, macrophages, and cytokines (IL-22, IL-23, IL-20) necessitate re-evaluation.

Purpose of the Study:

  • To critically re-evaluate the pathogenesis of psoriasis.
  • To propose a new model of psoriasis pathogenesis involving distinct stages and dominant immune cell types.
  • To explain the variable efficacy of current immunomodulatory therapies and predict future treatment outcomes.

Main Methods:

  • Review and synthesis of recent discoveries in psoriasis immunology.

Related Experiment Videos

  • Development of a multi-stage model for psoriasis pathogenesis.
  • Analysis of the role of various immune cells and cytokines.

    • Main Results:

    • The pathogenesis of psoriasis is proposed to involve distinct sequential stages.
    • Different immune cell types play dominant roles in each stage of the disease.
    • The model accounts for the success of anti-tumor necrosis factor-alpha therapy over T-cell depletion.

    Conclusions:

    • The current hypothesis of dominant T1 cell involvement in psoriasis requires critical re-evaluation.
    • A staged model of psoriasis pathogenesis incorporating diverse immune players offers a more comprehensive understanding.
    • This new model can guide the development and prediction of success for future immunomodulatory therapies.