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Physiologically based pharmacokinetic modeling of nanoceria systemic distribution in rats suggests dose- and route-dependent biokinetics
- Source :
- International Journal of Nanomedicine
- Publication Year :
- 2018
- Publisher :
- Dove Medical Press, 2018.
-
Abstract
- Ulrika Carlander,1 Tshepo Paulsen Moto,2 Anteneh Assefa Desalegn,1 Robert A Yokel,3 Gunnar Johanson1 1Unit of Work Environment Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Solna, Sweden; 2Faculty ofHealth Sciences, School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa; 3Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA Background: Cerium dioxide nanoparticles (nanoceria) are increasingly being used in a variety of products as catalysts, coatings, and polishing agents. Furthermore, their antioxidant properties make nanoceria potential candidates for biomedical applications. To predict and avoid toxicity, information about their biokinetics is essential. A useful tool to explore such associations between exposure and internal target dose is physiologically based pharmacokinetic (PBPK) modeling. The aim of this study was to test the appropriateness of our previously published PBPK model developed for intravenous (IV) administration when applied to various sizes of nanoceria and to exposure routes relevant for humans. Methods: Experimental biokinetic data on nanoceria (obtained from various exposure routes, sizes, coatings, doses, and tissues sampled) in rats were collected from the literature and also obtained from the researchers. The PBPK model was first calibrated and validated against IV data for 30 nm citrate coated ceria and then recalibrated for 5 nm ceria. Finally, the model was modified and tested against inhalation, intratracheal (IT) instillation, and oral nanoceria data.Results: The PBPK model adequately described nanoceria time courses in various tissues for 5 nm ceria given IV. The time courses of 30 nm ceria were reasonably well predicted for liver and spleen, whereas the biokinetics in other tissues were not well captured. For the inhalation, IT instillation, and oral exposure routes, re-optimization was difficult due to low absorption and, hence, low and variable nanoceria tissue levels. Moreover, the nanoceria properties and exposure conditions varied widely among the inhalation, IT instillation, and oral studies, making it difficult to assess the importance of different factors. Conclusion: Overall, our modeling efforts suggest that nanoceria biokinetics depend largely on the exposure route and dose. Keywords: biodistribution, cerium dioxide, inhalation, instillation, intravenous, oral
- Subjects :
- Physiologically based pharmacokinetic modelling
Biodistribution
Pharmacokinetic modeling
Biophysics
Pharmaceutical Science
Administration, Oral
Bioengineering
02 engineering and technology
Absorption (skin)
010402 general chemistry
01 natural sciences
Models, Biological
Biomaterials
Rats, Sprague-Dawley
oral
Pharmacokinetics
International Journal of Nanomedicine
Drug Discovery
Administration, Inhalation
Distribution (pharmacology)
Animals
Humans
Tissue Distribution
biodistribution
Original Research
inhalation
Inhalation
Chemistry
Organic Chemistry
General Medicine
Cerium
021001 nanoscience & nanotechnology
cerium dioxide
0104 chemical sciences
Target dose
instillation
Liver
intravenous
Calibration
Nanoparticles
0210 nano-technology
Spleen
Biomedical engineering
Subjects
Details
- Language :
- English
- ISSN :
- 11782013 and 11769114
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- International Journal of Nanomedicine
- Accession number :
- edsair.doi.dedup.....fb8bd5ed8aa9e42c9804603675c12a1a