[Immunohistologic changes of the intestinal mucosa in chronic inflammatory bowel diseases]

András Arató1

  • 1Semmelweis Egyetem, Altalános Orvostudományi Kar, I. Gyermekklinika, Budapest. arato@gyer1.sote.hu

Orvosi Hetilap
|February 18, 2003
PubMed

Insights

This review details immune reactions in inflammatory bowel disease (IBD), focusing on lymphocyte distribution, cytokine patterns, and epithelial changes in Crohn's disease and ulcerative colitis. It highlights the role of immune cells and lost oral tolerance in IBD pathogenesis.

Area of Science:

  • Immunology
  • Gastroenterology
  • Cell Biology

Context:

  • Inflammatory bowel disease (IBD) pathogenesis involves heightened immune responses in the intestinal mucosa.
  • Immunohistological methods have advanced the understanding of these immune reactions.
  • This review synthesizes current knowledge on immune cell dynamics and epithelial changes in IBD.

Purpose:

  • To detail the distribution of lymphocyte subsets and plasma cells in Crohn's disease (CD) and ulcerative colitis (UC).
  • To present findings on increased adhesion molecule expression and distinct cytokine profiles in CD and UC.
  • To review epithelial cell turnover, MHC II antigen expression, and the role of lost oral tolerance in IBD.

Summary:

  • IBD is characterized by increased immune reactions, including specific lymphocyte and plasma cell distributions in Crohn's disease and ulcerative colitis.
  • Elevated expression of adhesion molecules, distinct cytokine patterns, and rapid epithelial turnover (proliferation and apoptosis) are key features.
  • Epithelial expression of MHC II antigen and the loss of oral tolerance are significant pathogenetic factors in inflammatory bowel disease.

Impact:

  • Provides a comprehensive overview of the immunological and cellular mechanisms underlying IBD.
  • Highlights key differences in immune responses between Crohn's disease and ulcerative colitis.
  • Offers insights into potential therapeutic targets for managing inflammatory bowel disease.

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