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Metals and kidney autoimmunity.

P E Bigazzi1

  • 1Department of Pathology, University of Connecticut School of Medicine, Farmington 06030, USA. faasen@sun.uchc.edu

Environmental Health Perspectives
|September 30, 1999
PubMed
Summary
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Environmental metals like gold and mercury can trigger autoimmune diseases, including kidney damage. Genetic factors play a crucial role in susceptibility to these metal-induced autoimmune responses.

Area of Science:

  • Immunology
  • Environmental Health
  • Nephrology

Background:

  • The precise causes of autoimmune kidney diseases remain unclear, though environmental factors are suspected.
  • Xenobiotics, particularly metals such as gold and mercury, are implicated in modulating immune responses and potentially causing autoimmunity.
  • Historical and recent evidence links gold and mercury exposure to autoimmune conditions affecting the kidneys and other organs.

Purpose of the Study:

  • To investigate the role of environmental metals, specifically gold and mercury, in the development of autoimmune responses and kidney pathology.
  • To explore the mechanisms by which these metals induce autoimmunity and to identify factors influencing susceptibility.
  • To understand the broader implications of metal-induced autoimmunity for idiopathic autoimmune diseases.

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Main Methods:

  • Review of epidemiological studies on occupational and therapeutic exposures to gold and mercury.
  • Analysis of laboratory investigations in experimental animals (inbred mice and rats) exposed to gold and mercury.
  • Examination of in vitro and in vivo research on metal-induced autoimmune disease mechanisms.

Main Results:

  • Gold compounds can induce nephrotic syndrome, and mercury exposure has been linked to membranous nephropathy and other autoimmune manifestations.
  • While occupational mercury exposure may not always lead to autoimmunity, it can induce autoantibodies and autoimmune-like conditions in susceptible individuals.
  • Animal studies demonstrate that gold and mercury can induce autoimmune diseases similar to human conditions, with significant strain-specific genetic susceptibility observed.

Conclusions:

  • Genetic factors (immunogenetic and pharmacogenetic) are critical in determining individual susceptibility to metal-induced autoimmunity.
  • Research into metal-induced autoimmunity provides insights into xenobiotic interactions with the immune system and the pathogenesis of idiopathic autoimmune diseases.
  • Further investigation into the immunostimulatory or immunosuppressive mechanisms of xenobiotics is warranted to understand and potentially treat autoimmune conditions.