Mechanisms of autoimmunity

Noel R. Rose

Research output: Contribution to journalReview articlepeer-review

Abstract

The immune system is capable of recognizing any molecule that enters the body through a parenteral route. For that purpose, the lymphocyte population generates a large, diverse repertoire of receptors. Inevitably, many of these receptors recognize endogenous host antigens as well as exogenous molecules. Thus, self-reactive B cells and T cells are present in normal individuals and are potentially capable of producing an autoimmune response. The host consequently depends on certain mechanisms to avoid the harmful effects of autoimmunity. These mechanisms include negative selection in the thymus and bone marrow to delete the higher-affinity T and B cells and peripheral regulatory mechanisms, such as anergy, ignorance, and suppression. Despite such protective mechanisms, autoimmune diseases, collectively, are common in industrialized societies, even though individually most autoimmune diseases are rare. The diseases present differently depending on the site of pathology but share many fundamental mechanisms.

Original languageEnglish (US)
Pages (from-to)387-394
Number of pages8
JournalSeminars in Liver Disease
Volume22
Issue number4
DOIs
StatePublished - Nov 1 2002

Keywords

  • Autoimmune disease
  • Autoimmunity
  • Self/non-self discrimination

ASJC Scopus subject areas

  • Hepatology

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