2019
DOI: 10.1186/s12989-019-0318-0
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Mitsui-7, heat-treated, and nitrogen-doped multi-walled carbon nanotubes elicit genotoxicity in human lung epithelial cells

Abstract: Background The unique physicochemical properties of multi-walled carbon nanotubes (MWCNT) have led to many industrial applications. Due to their low density and small size, MWCNT are easily aerosolized in the workplace making respiratory exposures likely in workers. The International Agency for Research on Cancer designated the pristine Mitsui-7 MWCNT (MWCNT-7) as a Group 2B carcinogen, but there was insufficient data to classify all other MWCNT. Previously, MWCNT exposed to high temperature (M… Show more

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Cited by 28 publications
(26 citation statements)
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“…The 2.4 μg/ml dose induced a small but significant reduction in cell viability for MW #1–3 and CNF #1. These toxicity results are consistent with previous results [ 106 108 ]. The IC 80 for MW #1–7 and CNF #1–2 ranged from 11 to 43 μg/ml.…”
Section: Resultssupporting
confidence: 94%
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“…The 2.4 μg/ml dose induced a small but significant reduction in cell viability for MW #1–3 and CNF #1. These toxicity results are consistent with previous results [ 106 108 ]. The IC 80 for MW #1–7 and CNF #1–2 ranged from 11 to 43 μg/ml.…”
Section: Resultssupporting
confidence: 94%
“…Viability in the high dose was ≥80%, and the low dose had ≥97% viability. In DM-exposed cells, few micronuclei were detected, and background incidence was similar to previous studies [ 10 , 108 ]. All CNT/F materials at both the low and high dose induced significant increases in micronuclei number except for the low dose of MW #2 (Fig.…”
Section: Resultssupporting
confidence: 90%
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“…Other studies suggested that MWCNTs could reach the cell nucleus and directly interact with the DNA [21,23,28]. The physicochemical properties of MWCNTs should again affect this nano-biointeraction and hence the observed differences in genotoxicity profiles, as demonstrated in the recent study of Siegrist et al [87].…”
Section: Discussionmentioning
confidence: 89%