2014
DOI: 10.1080/15287394.2014.951756
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Potential Toxicity of Differential Functionalized Multiwalled Carbon Nanotubes (MWCNT) in Human Cell Line (BEAS2B) andCaenorhabditis elegans

Abstract: The aim of this study was to evaluate in vitro (human bronchial epithelial cells, BEAS2B cells) and in vivo (the nematode Caenorhabditis elegans, C. elegans) toxicity outcomes following exposure to pristine as well as surface-functionalized multiwalled carbon nanotubes (MWCNT) following hydroxylation-oxygenation (O(+)), amination (NH2), or carboxylation (COOH) of the carbon nanotubes (CNT). Cell viability and proliferation were measured by Ez-Cytox, trypan blue exclusion, and colony formation assays. The genot… Show more

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Cited by 70 publications
(33 citation statements)
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“…While several studies indicated that COOH functionalization significantly decreased CNT bioactivities, e.g. fibrogenic responses and pulmonary inflammation49505152, we and some others observed an increase in cytogenic, genotoxic and fibrogenic activities by COOH functionalization5354. In the present study, f-MWCNT elicited more robust effects on CAF-like cells and CSCs as compared to MWCNT.…”
Section: Discussioncontrasting
confidence: 52%
“…While several studies indicated that COOH functionalization significantly decreased CNT bioactivities, e.g. fibrogenic responses and pulmonary inflammation49505152, we and some others observed an increase in cytogenic, genotoxic and fibrogenic activities by COOH functionalization5354. In the present study, f-MWCNT elicited more robust effects on CAF-like cells and CSCs as compared to MWCNT.…”
Section: Discussioncontrasting
confidence: 52%
“…As an example, nonfunctionalised nanotubes are shown to be more toxic to cells and animals compared to well‐functionalised dispersed CNTs (Liu, Tabakman, Welsher, & Dai, ). However contrasting results about biosafety of different CNT preparations have been reported (Allegri et al., ; Chatterjee et al., ; Hamilton, Wu, Mitra, Shaw, & Holian, ; Liu et al., ; Ursini et al., ).…”
Section: Discussionmentioning
confidence: 99%
“…Significantly, we find that the physical form of carbon has a major impact on toxicity. CNTs are more toxic than similar chemical amounts of carbon in amorphous carbon black, which is quite nontoxic even at the highest concentration (0.75 mg/kg) (Chatterjee et al, ). Thus, the molecular structure and topology is essential for the clastogenicity/genotoxicity of carbonaceous nanomaterials.…”
Section: Discussionmentioning
confidence: 99%
“…Previous studies have reported the genotoxicity, cytotoxicity, pulmonary, and skin toxicity of SWCNTs (Smart et al, ; Naya et al, ; Reddy at al., ; Lindberg et al, ; Xu et al, ; Yu et al, ; Chatterjee et al, ; Farombi et al, ). Lindberg et al () in their genotoxicity study with human bronchial epithelial cells, observed an increase in DNA damage when exposed to a mixture of SWCNT and other carbon nanotubes.…”
Section: Introductionmentioning
confidence: 99%