Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana
Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nan...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Buffet, Pierre‐Emmanuel [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: © 2015 SETAC © 2015 SETAC. |
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| Schlagwörter: |
Glutathione Transferase - metabolism Behavior, Animal - drug effects Water Pollutants, Chemical - toxicity |
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| Übergeordnetes Werk: |
Enthalten in: Environmental toxicology and chemistry - Pensacola, Fla. : SETAC Press, 1982, 34(2015), 7, Seite 1659-1664 |
|---|---|
| Übergeordnetes Werk: |
volume:34 ; year:2015 ; number:7 ; pages:1659-1664 |
| Links: |
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| DOI / URN: |
10.1002/etc.2967 |
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OLC195701718X |
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| 245 | 1 | 0 | |a Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana |
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| 520 | |a Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. | ||
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| 650 | 4 | |a Cadmium sulfide quantum dots | |
| 650 | 4 | |a Oxidative stres | |
| 650 | 4 | |a Behavior | |
| 650 | 4 | |a Scrobicularia plana | |
| 650 | 4 | |a Cadmium - toxicity | |
| 650 | 4 | |a Quantum Dots - chemistry | |
| 650 | 4 | |a Glutathione Transferase - metabolism | |
| 650 | 4 | |a Behavior, Animal - drug effects | |
| 650 | 4 | |a Bivalvia - drug effects | |
| 650 | 4 | |a Water Pollutants, Chemical - toxicity | |
| 650 | 4 | |a Quantum Dots - toxicity | |
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| 650 | 4 | |a Cadmium - analysis | |
| 650 | 4 | |a Seawater - chemistry | |
| 650 | 4 | |a Catalase - metabolism | |
| 650 | 4 | |a Sulfides - chemistry | |
| 650 | 4 | |a Cadmium Compounds - chemistry | |
| 650 | 4 | |a Bivalvia - metabolism | |
| 650 | 4 | |a Oxidative Stress - drug effects | |
| 650 | 4 | |a Biomarkers - metabolism | |
| 650 | 4 | |a Movement - drug effects | |
| 650 | 4 | |a Nanomaterials | |
| 650 | 4 | |a Oxidative stress | |
| 650 | 4 | |a Quantum dots | |
| 650 | 4 | |a Cadmium | |
| 650 | 4 | |a Toxicity | |
| 650 | 4 | |a Mollusks | |
| 650 | 4 | |a Animal behavior | |
| 700 | 1 | |a Zalouk‐Vergnoux, Aurore |4 oth | |
| 700 | 1 | |a Poirier, Laurence |4 oth | |
| 700 | 1 | |a Lopes, Christelle |4 oth | |
| 700 | 1 | |a Risso‐de‐Faverney, Christine |4 oth | |
| 700 | 1 | |a Guibbolini, Marielle |4 oth | |
| 700 | 1 | |a Gilliland, Douglas |4 oth | |
| 700 | 1 | |a Perrein‐Ettajani, Hanane |4 oth | |
| 700 | 1 | |a Valsami‐Jones, Eugenia |4 oth | |
| 700 | 1 | |a Mouneyrac, Catherine |4 oth | |
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10.1002/etc.2967 doi PQ20160617 (DE-627)OLC195701718X (DE-599)GBVOLC195701718X (PRQ)p2951-7659476c3ce87411a20fe81830b4572935540f1195a2f7f8fdaa0d26e4b916033 (KEY)0137282320150000034000701659cadmiumsulfidequantumdotsinduceoxidativestressandb DE-627 ger DE-627 rakwb eng 570 690 DNB Buffet, Pierre‐Emmanuel verfasserin aut Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. Nutzungsrecht: © 2015 SETAC © 2015 SETAC. Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior Zalouk‐Vergnoux, Aurore oth Poirier, Laurence oth Lopes, Christelle oth Risso‐de‐Faverney, Christine oth Guibbolini, Marielle oth Gilliland, Douglas oth Perrein‐Ettajani, Hanane oth Valsami‐Jones, Eugenia oth Mouneyrac, Catherine oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 7, Seite 1659-1664 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:7 pages:1659-1664 http://dx.doi.org/10.1002/etc.2967 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2967/abstract http://www.ncbi.nlm.nih.gov/pubmed/25772261 http://search.proquest.com/docview/1694537545 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 7 1659-1664 |
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10.1002/etc.2967 doi PQ20160617 (DE-627)OLC195701718X (DE-599)GBVOLC195701718X (PRQ)p2951-7659476c3ce87411a20fe81830b4572935540f1195a2f7f8fdaa0d26e4b916033 (KEY)0137282320150000034000701659cadmiumsulfidequantumdotsinduceoxidativestressandb DE-627 ger DE-627 rakwb eng 570 690 DNB Buffet, Pierre‐Emmanuel verfasserin aut Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. Nutzungsrecht: © 2015 SETAC © 2015 SETAC. Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior Zalouk‐Vergnoux, Aurore oth Poirier, Laurence oth Lopes, Christelle oth Risso‐de‐Faverney, Christine oth Guibbolini, Marielle oth Gilliland, Douglas oth Perrein‐Ettajani, Hanane oth Valsami‐Jones, Eugenia oth Mouneyrac, Catherine oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 7, Seite 1659-1664 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:7 pages:1659-1664 http://dx.doi.org/10.1002/etc.2967 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2967/abstract http://www.ncbi.nlm.nih.gov/pubmed/25772261 http://search.proquest.com/docview/1694537545 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 7 1659-1664 |
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10.1002/etc.2967 doi PQ20160617 (DE-627)OLC195701718X (DE-599)GBVOLC195701718X (PRQ)p2951-7659476c3ce87411a20fe81830b4572935540f1195a2f7f8fdaa0d26e4b916033 (KEY)0137282320150000034000701659cadmiumsulfidequantumdotsinduceoxidativestressandb DE-627 ger DE-627 rakwb eng 570 690 DNB Buffet, Pierre‐Emmanuel verfasserin aut Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. Nutzungsrecht: © 2015 SETAC © 2015 SETAC. Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior Zalouk‐Vergnoux, Aurore oth Poirier, Laurence oth Lopes, Christelle oth Risso‐de‐Faverney, Christine oth Guibbolini, Marielle oth Gilliland, Douglas oth Perrein‐Ettajani, Hanane oth Valsami‐Jones, Eugenia oth Mouneyrac, Catherine oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 7, Seite 1659-1664 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:7 pages:1659-1664 http://dx.doi.org/10.1002/etc.2967 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2967/abstract http://www.ncbi.nlm.nih.gov/pubmed/25772261 http://search.proquest.com/docview/1694537545 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 7 1659-1664 |
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10.1002/etc.2967 doi PQ20160617 (DE-627)OLC195701718X (DE-599)GBVOLC195701718X (PRQ)p2951-7659476c3ce87411a20fe81830b4572935540f1195a2f7f8fdaa0d26e4b916033 (KEY)0137282320150000034000701659cadmiumsulfidequantumdotsinduceoxidativestressandb DE-627 ger DE-627 rakwb eng 570 690 DNB Buffet, Pierre‐Emmanuel verfasserin aut Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. Nutzungsrecht: © 2015 SETAC © 2015 SETAC. Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior Zalouk‐Vergnoux, Aurore oth Poirier, Laurence oth Lopes, Christelle oth Risso‐de‐Faverney, Christine oth Guibbolini, Marielle oth Gilliland, Douglas oth Perrein‐Ettajani, Hanane oth Valsami‐Jones, Eugenia oth Mouneyrac, Catherine oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 7, Seite 1659-1664 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:7 pages:1659-1664 http://dx.doi.org/10.1002/etc.2967 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2967/abstract http://www.ncbi.nlm.nih.gov/pubmed/25772261 http://search.proquest.com/docview/1694537545 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 7 1659-1664 |
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10.1002/etc.2967 doi PQ20160617 (DE-627)OLC195701718X (DE-599)GBVOLC195701718X (PRQ)p2951-7659476c3ce87411a20fe81830b4572935540f1195a2f7f8fdaa0d26e4b916033 (KEY)0137282320150000034000701659cadmiumsulfidequantumdotsinduceoxidativestressandb DE-627 ger DE-627 rakwb eng 570 690 DNB Buffet, Pierre‐Emmanuel verfasserin aut Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. Nutzungsrecht: © 2015 SETAC © 2015 SETAC. Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior Zalouk‐Vergnoux, Aurore oth Poirier, Laurence oth Lopes, Christelle oth Risso‐de‐Faverney, Christine oth Guibbolini, Marielle oth Gilliland, Douglas oth Perrein‐Ettajani, Hanane oth Valsami‐Jones, Eugenia oth Mouneyrac, Catherine oth Enthalten in Environmental toxicology and chemistry Pensacola, Fla. : SETAC Press, 1982 34(2015), 7, Seite 1659-1664 (DE-627)129130923 (DE-600)46234-2 (DE-576)022516131 0730-7268 nnns volume:34 year:2015 number:7 pages:1659-1664 http://dx.doi.org/10.1002/etc.2967 Volltext http://onlinelibrary.wiley.com/doi/10.1002/etc.2967/abstract http://www.ncbi.nlm.nih.gov/pubmed/25772261 http://search.proquest.com/docview/1694537545 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_252 AR 34 2015 7 1659-1664 |
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570 690 DNB Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana Cadmium sulfide quantum dots Oxidative stres Behavior Scrobicularia plana Cadmium - toxicity Quantum Dots - chemistry Glutathione Transferase - metabolism Behavior, Animal - drug effects Bivalvia - drug effects Water Pollutants, Chemical - toxicity Quantum Dots - toxicity Bivalvia - enzymology Cadmium - analysis Seawater - chemistry Catalase - metabolism Sulfides - chemistry Cadmium Compounds - chemistry Bivalvia - metabolism Oxidative Stress - drug effects Biomarkers - metabolism Movement - drug effects Nanomaterials Oxidative stress Quantum dots Cadmium Toxicity Mollusks Animal behavior |
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cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam scrobicularia plana |
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Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana |
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Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. |
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Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. |
| abstract_unstemmed |
Cadmium sulfide (CdS) quantum dots have a number of current applications in electronics and solar cells and significant future potential in medicine. The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems. |
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Cadmium sulfide quantum dots induce oxidative stress and behavioral impairments in the marine clam Scrobicularia plana |
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The aim of the present study was to examine the toxic effects of CdS quantum dots on the marine clam Scrobicularia plana exposed for 14 d to these nanomaterials (10 µg Cd L(-1) ) in natural seawater and to compare them with soluble Cd. Measurement of labile Cd released from CdS quantum dots showed that 52% of CdS quantum dots remained in the nanoparticulate form. Clams accumulated the same levels of Cd regardless of the form in which it was delivered (soluble Cd vs CdS quantum dots). However, significant changes in biochemical responses were observed in clams exposed to CdS quantum dots compared with soluble Cd. Increased activities of catalase and glutathione-S-transferase were significantly higher in clams exposed in seawater to Cd as the nanoparticulate versus the soluble form, suggesting a specific nano effect. The behavior of S. plana in sediment showed impairments of foot movements only in the case of exposure to CdS quantum dots. The results show that oxidative stress and behavior biomarkers are sensitive predictors of CdS quantum dots toxicity in S. plana. Such responses, appearing well before changes might occur at the population level, demonstrate the usefulness of this model species and type of biomarker in the assessment of nanoparticle contamination in estuarine ecosystems.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: © 2015 SETAC</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">© 2015 SETAC.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Cadmium sulfide quantum dots</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Oxidative stres</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Behavior</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Scrobicularia plana</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Cadmium - toxicity</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Quantum Dots - 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