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Physiology-based toxicokinetic modelling of aluminium in rat and man.
- Source :
-
Archives of toxicology [Arch Toxicol] 2021 Sep; Vol. 95 (9), pp. 2977-3000. Date of Electronic Publication: 2021 Aug 14. - Publication Year :
- 2021
-
Abstract
- A sufficient quantitative understanding of aluminium (Al) toxicokinetics (TK) in man is still lacking, although highly desirable for risk assessment of Al exposure. Baseline exposure and the risk of contamination severely limit the feasibility of TK studies administering the naturally occurring isotope <superscript>27</superscript> Al, both in animals and man. These limitations are absent in studies with <superscript>26</superscript> Al as a tracer, but tissue data are limited to animal studies. A TK model capable of inter-species translation to make valid predictions of Al levels in humans-especially in toxicological relevant tissues like bone and brain-is urgently needed. Here, we present: (i) a curated dataset which comprises all eligible studies with single doses of <superscript>26</superscript> Al tracer administered as citrate or chloride salts orally and/or intravenously to rats and humans, including ultra-long-term kinetic profiles for plasma, blood, liver, spleen, muscle, bone, brain, kidney, and urine up to 150 weeks; and (ii) the development of a physiology-based (PB) model for Al TK after intravenous and oral administration of aqueous Al citrate and Al chloride solutions in rats and humans. Based on the comprehensive curated <superscript>26</superscript> Al dataset, we estimated substance-dependent parameters within a non-linear mixed-effect modelling context. The model fitted the heterogeneous <superscript>26</superscript> Al data very well and was successfully validated against datasets in rats and humans. The presented PBTK model for Al, based on the most extensive and diverse dataset of Al exposure to date, constitutes a major advancement in the field, thereby paving the way towards a more quantitative risk assessment in humans.<br /> (© 2021. The Author(s).)
- Subjects :
- Administration, Intravenous
Administration, Oral
Adult
Aluminum Chloride administration & dosage
Aluminum Chloride pharmacokinetics
Animals
Citric Acid administration & dosage
Citric Acid pharmacokinetics
Datasets as Topic
Female
Humans
Male
Nonlinear Dynamics
Rats
Risk Assessment
Species Specificity
Tissue Distribution
Toxicokinetics
Aluminum Chloride toxicity
Citric Acid toxicity
Models, Biological
Subjects
Details
- Language :
- English
- ISSN :
- 1432-0738
- Volume :
- 95
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Archives of toxicology
- Publication Type :
- Academic Journal
- Accession number :
- 34390355
- Full Text :
- https://doi.org/10.1007/s00204-021-03107-y