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Crucial Parameters Responsible for Carbon Nanotubes Toxicity

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Abstract:

The development of carbon nanotubes (CNTs) for biomedical and biotechnological applications has gained great promise recently, especially for their interesting use in the delivery of therapeutically active molecules to targeted cells. The interaction between cells and this nanomaterial is a critical feature that is responsible for the pharmacological effect as well as for any eventual toxicity. With respect to the latter aspect, in this manuscript we have evaluated a few parameters that seem to be involved in the cytotoxic profile of CNTs (both Single-walled (SWCNTs) and Multi-walled (MWCNTs) nanotubes), such as their sidewall functionalization, tubes' length, solubility, concentration and purity. Among them, we identified the last as the most crucial factor: we have shown that our ultrapure, totally dispersible, carbon nanotubes not only display lack of toxicity in the range of concentrations normally used (10-150 μg/ml), but they also pave the way for an extensive use of this material for several biomedical purposes.





Keywords: Carbon Nanotubes; MTT assay; functionalization; in vitro toxicity; purity

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/157341310790945696

Publication date: April 1, 2010

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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