4.7 Review

The Application of a Physiologically Based Toxicokinetic Model in Health Risk Assessment

Journal

TOXICS
Volume 11, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/toxics11100874

Keywords

compartmental model; exposure routes; PBTK model; health risk assessment

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Toxicokinetics plays a crucial role in health risk assessments, and physiologically based toxicokinetic (PBTK) models are powerful tools that quantitatively describe the absorption, distribution, metabolism, and excretion of chemicals in organisms and establish correlations with toxic effects.
Toxicokinetics plays a crucial role in the health risk assessments of xenobiotics. Classical compartmental models are limited in their ability to determine chemical concentrations in specific organs or tissues, particularly target organs or tissues, and their limited interspecific and exposure route extrapolation hinders satisfactory health risk assessment. In contrast, physiologically based toxicokinetic (PBTK) models quantitatively describe the absorption, distribution, metabolism, and excretion of chemicals across various exposure routes and doses in organisms, establishing correlations with toxic effects. Consequently, PBTK models serve as potent tools for extrapolation and provide a theoretical foundation for health risk assessment and management. This review outlines the construction and application of PBTK models in health risk assessment while analyzing their limitations and future perspectives.

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