Maximal extent of translocation of single-walled carbon nanotubes from lung airways of the rat

Matthews, Ian Price, Gregory, Clive James ORCID: https://orcid.org/0000-0003-4876-3982, Aljayyoussi, Ghaith, Morris, Christopher John, McDonald, Iain ORCID: https://orcid.org/0000-0001-9066-7244, Hoogendoorn, Bastiaan ORCID: https://orcid.org/0000-0001-9753-169X and Gumbleton, Mark ORCID: https://orcid.org/0000-0002-7386-311X 2013. Maximal extent of translocation of single-walled carbon nanotubes from lung airways of the rat. Environmental Toxicology and Pharmacology 35 (3) , pp. 461-464. 10.1016/j.etap.2013.02.002

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Abstract

This study aimed to examine the extent of pulmonary translocation of single-walled carbon nanotubes (SWCNTs) from lung airways of rat. It utilised an ex vivo isolated perfused rat lung (IPRL) model that retains the intact lung architecture while eliminating the confounding issue of systemic pharmacokinetics. Doses (100 μg) of SWCNTs were instilled into the airways of the IPRL and the pulmonary translocation of SWCNTs quantified by inductively coupled plasma mass spectroscopy using CNT-associated nickel as the probe. SWCNT translocation from the airways across an intact pulmonary barrier into what would be the systemic circulation was no greater than 0.05% of the instilled dose over 90 min. Pharmacokinetic simulation incorporating a term for mucociliary clearance would predict over a 14 day an approximate cumulative pulmonary translocation from rat lung of no greater than 0.15% from a 100 μg deposited dose.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences Medicine Pharmacy
Subjects:	R Medicine > RM Therapeutics. Pharmacology
Uncontrolled Keywords:	Single-walled carbon nanotubes; Isolated perfused rat lung; Acute pulmonary exposure; Systemic translocation
Publisher:	Elsevier
ISSN:	1382-6689
Last Modified:	25 Oct 2022 08:51
URI:	https://orca.cardiff.ac.uk/id/eprint/56215

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