An open source physiologically based kinetic model for the chicken (Gallus gallus domesticus): Calibration and validation for the prediction residues in tissues and eggs.

Clicks: 369
ID: 87253
2020
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Abstract
Xenobiotics from anthropogenic and natural origin enter animal feed and human food as regulated compounds, environmental contaminants or as part of components of the diet. After dietary exposure, a chemical is absorbed and distributed systematically to a range of organs and tissues, metabolised, and excreted. Physiologically based kinetic (PBK) models have been developed to estimate internal concentrations from external doses. In this study, a generic multi-compartment PBK model was developed for chicken. The PBK model was implemented for seven compounds (with log K range -1.37-6.2) to quantitatively link external dose and internal dose for risk assessment of chemicals. Global sensitivity analysis was performed for a hydrophilic and a lipophilic compound to identify the most sensitive parameters in the PBK model. Model predictions were compared to measured data according to dataset-specific exposure scenarios. Globally, 71% of the model predictions were within a 3-fold change of the measured data for chicken and only 7% of the PBK predictions were outside a 10-fold change. While most model input parameters still rely on in vivo experiments, in vitro data were also used as model input to predict internal concentration of the coccidiostat monensin. Future developments of generic PBK models in chicken and other species of relevance to animal health risk assessment are discussed.
Reference Key
lautz2020anenvironment Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lautz, L S;Nebbia, C;Hoeks, S;Oldenkamp, R;Hendriks, A J;Ragas, A M J;Dorne, J L C M;
Journal Environment international
Year 2020
DOI
S0160-4120(19)33959-5
URL
Keywords
risk assessment global sensitivity analysis chicken in vitro to in vivo extrapolation physiologically based kinetic model

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