The role of exposure versus body burden data in deriving health guidance values.
The Agency for Toxic Substances and Disease Registry (ATSDR) derives health-based guidance values to estimate daily human exposure to hazardous substances that are likely to be without appreciable risk of adverse noncancer effects for specific routes and durations of exposure. Most of these guidance values are derived from data showing external dose/health effect relationships. However, for chemicals that persist in the body, information on body burdens may provide more accurate understanding of their toxicity. This article evaluates the exposure versus body burden approaches using 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and lead as examples.
Pohl
Hana R
HR
U.S. Department of Health and Human Services, Agency for Toxic Substances and Disease Registry, Atlanta, Georgia, USA. hpohl@cdc.gov
Abadin
Henry G
HG
Jones
Dennis E
DE
De Rosa
Christopher T
CT
D000818:Animals; D001822:Body Burden; D004781:Environmental Exposure / Q000009:adverse effects / Q000032:analysis*; D004785:Environmental Pollutants / Q000592:standards* / Q000633:toxicity; D006801:Humans; D007854:Lead / Q000592:standards* / Q000633:toxicity; D019055:No-Observed-Adverse-Effect Level; D000072317:Polychlorinated Dibenzodioxins / Q000592:standards* / Q000633:toxicity; D018570:Risk Assessment; D035501:Uncertainty
D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D007854:Lead