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Case studies of the use of biomarkers to assess exposures.

Authors
  • Needham, L L
  • Ashley, D L
  • Patterson, D G Jr
Type
Published Article
Journal
Toxicology Letters
Publisher
Elsevier
Publication Date
Dec 01, 1995
Volume
82-83
Pages
373–378
Identifiers
PMID: 8597079
Source
Medline
License
Unknown

Abstract

Because many environmental toxicants are ubiquitous, humans are continuously exposed to them. At other times, certain populations may be more highly exposed to these toxicants from point sources. The evaluation of the degree of the exposure to either a population or an individual is frequently based on indirect surrogates of exposure, such as questionnaire data on time-activities and/or concentrations measured in environmental media. We prefer to assess the degree of the exposure to a given toxicant by measuring the concentration of the toxicant, its metabolite(s), or reaction product(s) in human specimens. Then by applying pharmacokinetic information for that toxicant, we can best reconstruct the exposure scenario. These data are then compared to reference range levels of these toxicants in the preferred biologic specimen. The development and uses of the reference range data are exemplified by case studies including potential exposure to dioxin and solvents.

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