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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
10/01/2019 |
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Data da última atualização: |
10/01/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MEDEIROS, A. M. Z.; KHAN, L. U.; DELITE, F. S.; COSTA, C. A.; OSPINA, C. A.; ALVES, O. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T. |
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Afiliação: |
Aline M.Z. MEDEIROS, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil; (2) Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP); Latif U. Khan, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Fabricio S. Delite, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Carlos A. Costa, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Carlos A. Ospina, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Oswaldo L. Alves, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Laboratoy of Solid State Chemistry (LQES) and NanoBioss Laboratory/UNICAMP; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; Diego S. T. Martinez, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM): Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP). |
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Título: |
Nanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos: influence of natural organic matter and chorion membrane removal. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM. |
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Páginas: |
p. 116. |
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Idioma: |
Português |
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Conteúdo: |
Single-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in early phase. However, the presence of NOM mitigates the deleterious effects, revealing the antidotal proprieties of NOM for GO@AgNPs (Figure 1). These findings showed the critical influence of chorion membrane and NOM in the modulation of the adverse effects of GO@AgNP nanohybrid material on zebrafish model. MenosSingle-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in ea... Mostrar Tudo |
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Palavras-Chave: |
Nanoecotoxicity; Zebrafish embryo. |
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Thesaurus Nal: |
Chorion; Organic matter. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190151/1/RA-CastroVLSS-Nanosafe2018-p116.pdf
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Marc: |
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100 1 $aMEDEIROS, A. M. Z.
245 $aNanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos$binfluence of natural organic matter and chorion membrane removal.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM.$c2018
300 $ap. 116.
520 $aSingle-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in early phase. However, the presence of NOM mitigates the deleterious effects, revealing the antidotal proprieties of NOM for GO@AgNPs (Figure 1). These findings showed the critical influence of chorion membrane and NOM in the modulation of the adverse effects of GO@AgNP nanohybrid material on zebrafish model.
650 $aChorion
650 $aOrganic matter
653 $aNanoecotoxicity
653 $aZebrafish embryo
700 1 $aKHAN, L. U.
700 1 $aDELITE, F. S.
700 1 $aCOSTA, C. A.
700 1 $aOSPINA, C. A.
700 1 $aALVES, O. L.
700 1 $aCASTRO, V. L. S. S. de
700 1 $aMARTINEZ, D. S. T.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 28 | |
| 21. |  | SILVA, G. H. da; CLEMENTE, Z.; COA, F.; RODRIGUES NETO, L. L.; CARVALHO, H. W. P. de; KHAN, L. U.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. Avaliação da toxicidade do nanomaterial hibrido tio2@mwcnt em embri. In: WORKSHOP DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos. Anais... São Carlos: Embrapa Instrumentação, 2017. p. 704-707.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 22. | | CÔA, F.; STRAUSS, M.; CLEMENTE, Z.; RODRIGUES NETO, L. L.; LOPES, J. R.; ALENCAR, R. S.; SOUZA FILHO, A. G.; ALVES, O. L.; CASTRO, V. L. S. S. de; BARBIERI, E.; MARTINEZ, D. S. T. Coating carbon nanotubes with humic acid using an eco-friendly mechanochemical method: Application for Cu(II) ions removal from water and aquatic ecotoxicity. Science of the Total Environment, v. 607-608, p. 1479-1486, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 23. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R.; CASTRO, V. L. S. S. de; UMBUZEIRO, G. A.; BARBIERI, E.; DURÁN, M.; MELO, P. S.; ALVES, O. L. Interlab study on nanotoxicology of representative graphene oxide. In: INTERNATIONAL CONFERENCE ON SAFE PRODUCTION AND USE OF NANOMATERIALS, 4, 2014, Grenoble. Book of Abstract... Grenoble: Plate-Forme Nano Sécurité, 2014.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 24. | | DURÁN, N.; MARTINEZ, D. S. T.; JUSTO, G. Z.; LIMA, R. de; CASTRO, V. L. S. S. de; UMBUZEIRO, G. de A.; BARBIERI, E.; DURÁN, M.; MELO, P. da S.; ALVES, O. L.; FÁVARO, W. J. Interlab study on nanotoxicology of representative graphene oxide. Journal of Physics, Bristol, v. 617, p. 1-9, 2015. Edition of the proceedings 4th International Conference on Safe Production and Use Nanomaterials (Nanosafe 2014) 18-20 November 2014, held a Grenoble, France.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 25. | | CASTRO, V. L. S. S. de; CLEMENTE, Z.; JONSSON, C. M.; SILVA, M. S. G. M. e; VALLIM, J. H.; MEDEIROS, A. M. Z. de; MARTINEZ, D. S. T. Nanoecotoxicity assessment of graphene oxide and its relationship with humic acid. Environmental Toxicology and Chemistry, v. 37, n. 7, p. 1998-2012, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 26. | | MEDEIROS, A. M. Z.; KHAN, L. U.; DELITE, F. S.; COSTA, C. A.; OSPINA, C. A.; ALVES, O. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T. Nanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos: influence of natural organic matter and chorion membrane removal. In: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM. p. 116.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 27. | | SILVA, G. H. da; CLEMENTE, Z.; COA, F.; RODRIGUES NETO, L. L.; KHAN, L. U.; CARVALHO, H. W. P.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. Nanoecotoxicity and uptake of TiO2@MWCNT hybrid material on Danio rerio embryos. In: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.11. p. 384.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 28. | | SILVA, G. H. da; CLEMENTE, Z.; KHAN, L. U.; COA, F.; RODRIGUES NETO, L. L.; CARVALHO, H. W. P. de; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T.; MONTEIRO, R. T. R. Toxicity assessment of TiO2-MWCNT nanohybrid material with enhanced photocatalytic activity on Danio rerio (Zebrafish) embryos. Ecotoxicology and Environmental Safety, v. 165, p. 136-143, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 28 | |
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