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Target organs and systems: methodologies to assess immune system function

M H Karol1

  • 1Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, Pennsylvania 15238, USA. mhk@vms.cis.pitt.edu

Environmental Health Perspectives
|May 26, 1998
PubMed
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This paper reviews methods for assessing chemical immunotoxicity, focusing on alternatives to animal testing. It highlights a tiered approach for screening and interpreting results for human health relevance.

Area of Science:

  • Toxicology
  • Immunology
  • Environmental Health

Background:

  • Immunotoxicity involves altered immune function, with various chemicals impacting the immune system.
  • Extensive literature exists on immunotoxicity, but assessment methods are evolving.

Purpose of the Study:

  • To provide an overview of current immunotoxicity assessment methods.
  • To discuss the shift towards alternative testing strategies.
  • To describe a tiered approach for chemical screening.

Main Methods:

  • Overview of established methods for assessing chemical immunotoxicity.
  • Discussion of alternative models: feral species, in vitro assays, computational models.
  • Description of a tiered screening strategy.

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Main Results:

  • Chemicals can cause both reduced and heightened immune responses.
  • Alternative methods offer promise for reducing reliance on mammalian models.
  • A tiered approach provides a framework for screening but has limitations.

Conclusions:

  • Interpreting immunotoxicity data requires consideration of immune system complexity (functional reserve and redundancy).
  • The trend towards alternative methods is driven by ethical and efficiency considerations.
  • Accurate assessment is crucial for understanding clinical disease and human health risks.