Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.18/6074 |
Resumo: | Iron oxide nanoparticles (ION) have received much attention for their utility in biomedical applications, such as magnetic resonance imaging, drug delivery and hyperthermia, but concerns regarding their potential harmful effects are also growing. Even though ION may induce different toxic effects in a wide variety of cell types and animal systems, there is a notable lack of toxicological data on the human nervous system, particularly important given the increasing number of applications on this specific system. An important mechanism of nanotoxicity is reactive oxygen species (ROS) generation and oxidative stress. On this basis, the main objective of this work was to assess the oxidative potential of silica-coated (S-ION) and oleic acid-coated (O-ION) ION on human SH-SY5Y neuronal and A172 glial cells. To this aim, ability of ION to generate ROS (both in the absence and presence of cells) was determined, and consequences of oxidative potential were assessed (i) on DNA by means of the 8-oxo-7,8-dihydroguanine DNA glycosylase (OGG1)-modified comet assay, and (ii) on antioxidant reserves by analyzing ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG). Conditions tested included a range of concentrations, two exposure times (3 and 24 h), and absence and presence of serum in the cell culture media. Results confirmed that, even though ION were not able to produce ROS in acellular environments, ROS formation was increased in the neuronal and glial cells by ION exposure, and was parallel to induction of oxidative DNA damage and, only in the case of neuronal cells treated with S-ION, to decreases in the GSH/GSSG ratio. Present findings suggest the production of oxidative stress as a potential action mechanism leading to the previously reported cellular effects, and indicate that ION may pose a health risk to human nervous system cells by generating oxidative stress, and thus should be used with caution. |
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Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cellsIron Oxide NanoparticlesOxidative DNA DamageReactive Oxygen SpeciesGlutathione DepletionSH-SY5Y CellsA172 CellsGenotoxicidade AmbientalIron oxide nanoparticles (ION) have received much attention for their utility in biomedical applications, such as magnetic resonance imaging, drug delivery and hyperthermia, but concerns regarding their potential harmful effects are also growing. Even though ION may induce different toxic effects in a wide variety of cell types and animal systems, there is a notable lack of toxicological data on the human nervous system, particularly important given the increasing number of applications on this specific system. An important mechanism of nanotoxicity is reactive oxygen species (ROS) generation and oxidative stress. On this basis, the main objective of this work was to assess the oxidative potential of silica-coated (S-ION) and oleic acid-coated (O-ION) ION on human SH-SY5Y neuronal and A172 glial cells. To this aim, ability of ION to generate ROS (both in the absence and presence of cells) was determined, and consequences of oxidative potential were assessed (i) on DNA by means of the 8-oxo-7,8-dihydroguanine DNA glycosylase (OGG1)-modified comet assay, and (ii) on antioxidant reserves by analyzing ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG). Conditions tested included a range of concentrations, two exposure times (3 and 24 h), and absence and presence of serum in the cell culture media. Results confirmed that, even though ION were not able to produce ROS in acellular environments, ROS formation was increased in the neuronal and glial cells by ION exposure, and was parallel to induction of oxidative DNA damage and, only in the case of neuronal cells treated with S-ION, to decreases in the GSH/GSSG ratio. Present findings suggest the production of oxidative stress as a potential action mechanism leading to the previously reported cellular effects, and indicate that ION may pose a health risk to human nervous system cells by generating oxidative stress, and thus should be used with caution.This work was funded by Xunta de Galicia (ED431B 2016/013). V. Valdiglesias was supported by a Xunta de Galicia postdoctoral fellowship (reference ED481B 2016/190-0). N. Fernández-Bertólez was supported by an INDITEX-UDC fellowship, and Maria João Bessa was supported by the grant SFRH/BD/120646/2016, funded by FCT (financing subsided by national fund of MCTES and POCH). Authors would also like to acknowledge COST Action CA15132 “The comet assay as a human biomonitoring tool (hCOMET)”.ElsevierRepositório Científico do Instituto Nacional de SaúdeFernández-Bertólez, NataliaCosta, CarlaBessa, Maria JoãoPark, MagrietCarriere, MarieDussert, FannyTeixeira, João PauloPásaro, EduardoLaffon, BlancaValdiglesias, Vanessa2019-03-06T15:36:14Z2018-11-302018-11-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.18/6074engMutat Res Gen Tox En. 2018 Nov 30:1-10. doi: 10.1016/j.mrgentox.2018.11.0131383-571810.1016/j.mrgentox.2018.11.013info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-20T15:41:10Zoai:repositorio.insa.pt:10400.18/6074Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:40:41.854381Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
title |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
spellingShingle |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells Fernández-Bertólez, Natalia Iron Oxide Nanoparticles Oxidative DNA Damage Reactive Oxygen Species Glutathione Depletion SH-SY5Y Cells A172 Cells Genotoxicidade Ambiental |
title_short |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
title_full |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
title_fullStr |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
title_full_unstemmed |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
title_sort |
Assessment of oxidative damage induced by iron oxide nanoparticles on different nervous system cells |
author |
Fernández-Bertólez, Natalia |
author_facet |
Fernández-Bertólez, Natalia Costa, Carla Bessa, Maria João Park, Magriet Carriere, Marie Dussert, Fanny Teixeira, João Paulo Pásaro, Eduardo Laffon, Blanca Valdiglesias, Vanessa |
author_role |
author |
author2 |
Costa, Carla Bessa, Maria João Park, Magriet Carriere, Marie Dussert, Fanny Teixeira, João Paulo Pásaro, Eduardo Laffon, Blanca Valdiglesias, Vanessa |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Nacional de Saúde |
dc.contributor.author.fl_str_mv |
Fernández-Bertólez, Natalia Costa, Carla Bessa, Maria João Park, Magriet Carriere, Marie Dussert, Fanny Teixeira, João Paulo Pásaro, Eduardo Laffon, Blanca Valdiglesias, Vanessa |
dc.subject.por.fl_str_mv |
Iron Oxide Nanoparticles Oxidative DNA Damage Reactive Oxygen Species Glutathione Depletion SH-SY5Y Cells A172 Cells Genotoxicidade Ambiental |
topic |
Iron Oxide Nanoparticles Oxidative DNA Damage Reactive Oxygen Species Glutathione Depletion SH-SY5Y Cells A172 Cells Genotoxicidade Ambiental |
description |
Iron oxide nanoparticles (ION) have received much attention for their utility in biomedical applications, such as magnetic resonance imaging, drug delivery and hyperthermia, but concerns regarding their potential harmful effects are also growing. Even though ION may induce different toxic effects in a wide variety of cell types and animal systems, there is a notable lack of toxicological data on the human nervous system, particularly important given the increasing number of applications on this specific system. An important mechanism of nanotoxicity is reactive oxygen species (ROS) generation and oxidative stress. On this basis, the main objective of this work was to assess the oxidative potential of silica-coated (S-ION) and oleic acid-coated (O-ION) ION on human SH-SY5Y neuronal and A172 glial cells. To this aim, ability of ION to generate ROS (both in the absence and presence of cells) was determined, and consequences of oxidative potential were assessed (i) on DNA by means of the 8-oxo-7,8-dihydroguanine DNA glycosylase (OGG1)-modified comet assay, and (ii) on antioxidant reserves by analyzing ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG). Conditions tested included a range of concentrations, two exposure times (3 and 24 h), and absence and presence of serum in the cell culture media. Results confirmed that, even though ION were not able to produce ROS in acellular environments, ROS formation was increased in the neuronal and glial cells by ION exposure, and was parallel to induction of oxidative DNA damage and, only in the case of neuronal cells treated with S-ION, to decreases in the GSH/GSSG ratio. Present findings suggest the production of oxidative stress as a potential action mechanism leading to the previously reported cellular effects, and indicate that ION may pose a health risk to human nervous system cells by generating oxidative stress, and thus should be used with caution. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-30 2018-11-30T00:00:00Z 2019-03-06T15:36:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.18/6074 |
url |
http://hdl.handle.net/10400.18/6074 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Mutat Res Gen Tox En. 2018 Nov 30:1-10. doi: 10.1016/j.mrgentox.2018.11.013 1383-5718 10.1016/j.mrgentox.2018.11.013 |
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info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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