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Why Sjögren's disease?

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Area of Science:

  • Immunology and Rheumatology
  • Autoimmune Diseases
  • Epithelial Cell Biology

Background:

  • Sjögren's syndrome is a systemic autoimmune disorder.
  • Characterized by sicca symptoms and extraglandular manifestations.
  • Epithelial cells play a crucial role in its pathogenesis.

Purpose of the Study:

  • To review the historical development, pathogenesis, and nomenclature of Sjögren's syndrome.
  • To critique the proposed term 'Sjögren's disease'.
  • To propose 'autoimmune epithelitis' as a more accurate descriptor.

Main Methods:

  • Literature review of historical and recent immunological studies.
  • Analysis of experimental evidence on salivary gland epithelial cell function.
  • Critique of current and proposed nomenclature for Sjögren's syndrome.

Main Results:

  • Salivary gland epithelial cells are active participants, not passive targets, in Sjögren's pathogenesis.
  • These cells initiate and perpetuate immune responses by expressing immunoregulatory molecules and cytokines.
  • The term 'autoimmune epithelitis' reflects the active role of epithelial cells.

Conclusions:

  • The proposed term 'Sjögren's disease' offers no scientific advantage over 'Sjögren's syndrome'.
  • Current nomenclature fails to capture the active pathogenic role of epithelial cells.
  • 'Autoimmune epithelitis' is a more pathogenetically meaningful description of the condition.