2024-03-29T13:33:19Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/56442023-03-31T12:14:43Zcom_10259_4759com_10259_2604col_10259_4760
Domi, Brixhilda
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0000-0001-7786-8615
Bhorkar, Kapil
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Rumbo Lorenzo, Carlos
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0000-0002-5038-0334
Sygellou, Labrini
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Martel Martín, Sonia
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0000-0001-9080-0877
Quesada Pato, Roberto
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Yannopoulos, Spyros N.
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Tamayo Ramos, Juan Antonio
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0000-0002-7071-002X
2021-03-12T13:06:31Z
2021-03-12T13:06:31Z
2021-06
0045-6535
http://hdl.handle.net/10259/5644
10.1016/j.chemosphere.2021.129603
The utilization of tungsten disulfide (WS2) nanomaterials in distinct applications is raising due to their unique physico-chemical properties, such as low friction coefficient and high strength, which highlights the necessity to study their potential toxicological effects, due to the potential increase of environmental and human exposure. The aim of this work was to analyze commercially available aqueous dispersions of monolayer tungsten disulfide (2D WS2) nanomaterials with distinct lateral size employing a portfolio of physico-chemical and toxicological evaluations. The structure and stoichiometry of monolayer tungsten disulfide (WS2-ACS-M) and nano size monolayer tungsten disulfide (WS2-ACS-N) was analyzed by Raman spectroscopy, whereas a more quantitative approach to study the nature of formed oxidized species was undertaken employing X-ray photoelectron spectroscopy. Adenocarcinomic human alveolar basal epithelial cells (A549 cells) and the ecotoxicology model Saccharomyces cerevisiae were selected as unicellular eukaryotic systems to assess the cytotoxicity of the nanomaterials. Cell viability and reactive oxygen species (ROS) determinations demonstrated different toxicity levels depending on the cellular model used. While both 2D WS2 suspensions showed very low toxicity towards the A549 cells, a comparable concentration (160 mg L−1) reduced the viability of yeast cells. The toxicity of a nano size 2D WS2 commercialized in dry form from the same provider was also assessed, showing ability to reduce yeast cells viability as well. Overall, the presented data reveal the physico-chemical properties and the potential toxicity of commercial 2D WS2 aqueous suspensions when interacting with distinct eukaryotic organisms, showing differences in function of the biological system exposed.
European Union’s H2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement N. 721642
application/pdf
eng
Elsevier
Chemosphere. 2021, V. 272, 129603
https://doi.org/10.1016/j.chemosphere.2021.129603
info:eu-repo/grantAgreement/EC/H2020/721642/EU/Solid lubrication for emerging engineering applications
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
2D WS2
StructureStoichiometry
Eukaryotic cells
Cell viability
Oxidative stress
Toxicological assessment of commercial monolayer tungsten disulfide nanomaterials aqueous suspensions using human A549 cells and the model fungus Saccharomyces cerevisiae
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Chemosphere
272
129603
TEXT
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2023-03-31 14:14:43.938
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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