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Adverse Effects of Industrial Multiwalled Carbon Nanotubes on Human rulmonary Cells

The aim of this study was to evaluate adverse effects of multi-walled carbon nanotubes (MWCNT), produced for industrial purposes, on the human epithelial cell line A549. MWCNT were dispersed in dipalmitoyl lecithin (DPL), a component of pulmonary surfactant, and the effects of dispersion in DPL were...

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Published in:Journal of toxicology and environmental health. Part A 2009-01, Vol.72 (2), p.60
Main Authors: Tabet, Lyes, Bussy, Cyrill, Amara, Nadia, Setyan, Ari, Grodet, Alain, Rossi, Michel J, Pairon, Jean-Claude, Boczkowski, Jorge, Lanone, Sophie
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container_title Journal of toxicology and environmental health. Part A
container_volume 72
creator Tabet, Lyes
Bussy, Cyrill
Amara, Nadia
Setyan, Ari
Grodet, Alain
Rossi, Michel J
Pairon, Jean-Claude
Boczkowski, Jorge
Lanone, Sophie
description The aim of this study was to evaluate adverse effects of multi-walled carbon nanotubes (MWCNT), produced for industrial purposes, on the human epithelial cell line A549. MWCNT were dispersed in dipalmitoyl lecithin (DPL), a component of pulmonary surfactant, and the effects of dispersion in DPL were compared to those in two other media: ethanol (EtOH) and phosphate- buffered saline (PBS). Effects of MWCNT were also compared to those of two asbestos fibers (chrysotile and crocidolite) and carbon black (CB) nanoparticles, not only in A549 cells but also in mesothelial cells (MeT5A human cell line), used as an asbestos-sensitive cell type. MWCNT formed agglomerates on top of both cell lines (surface area 15-35 µm^2) that were significantly larger and more numerous in PBS than in EtOH and DPL. Whatever the dispersion media, incubation with 100 µg/ml MWCNT induced a similar decrease in metabolic activity without changing cell membrane permeability or apoptosis. Neither MWCNT cellular internalization nor oxidative stress was observed. In contrast, asbestos fibers penetrated into the cells, decreased metabolic activity but not cell membrane permeability, and increased apoptosis, without decreasing cell number. CB was internalized without any adverse effects. In conclusion, this study demonstrates that MWCNT produced for industrial purposes exert adverse effects without being internalized by human epithelial and mesothelial pulmonary cell lines. [PUBLICATION ABSTRACT]
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subjects Apoptosis
Asbestos
Carbon
Cells
Chemical compounds
Human exposure
Nanotubes
Toxicology
title Adverse Effects of Industrial Multiwalled Carbon Nanotubes on Human rulmonary Cells
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