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| 7. |  | MORAES, D. A. de C.; SPADOTTO, C. A.; SARTORI, A. A. da C.; ZIMBACK, C. R. L. Variabilidade espacial do risco de contaminação de águas subterrâneas por tebuthiuron em área de cana-de-açúcar. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 12, p. 1992-1999, dez. 2016. Título em inglês: Spatial variability of groundwater contamination risk by tebuthiuron in sugarcane area .| Biblioteca(s): Embrapa Unidades Centrais. |
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| 10. | | MORAES, D. A. de C.; SARTORI, A. A. da C.; HOLLER, W. A.; SPADOTTO, C. A.; MARTINHO, P. R. R.; ZIMBACK, C. R. L. Uso da banda termal do satélite LANDSAT-5 e técnicas de geoestatística na estimativa da degradação da Atrazina no solo da Área de Proteção Ambiental de Tejupá. In: SIMPÓSIO DE GEOESTATÍSTICA APLICADA EM CIÊNCIAS AGRÁRIAS, 3., 2013, Botucatu, SP. Anais... Botucatu, SP: FCA/UNESP, 2013. 6 p. 1 CD-ROM 6 p.| Biblioteca(s): Embrapa Territorial. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
30/09/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANTOS, D. M. dos; DIAS, L. M.; SURUR, A. K.; MORAES, D. A. de; PAVARINA, A. C.; FONTANA, C. R.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Electrospun composite bead-on-string nanofibers containing CaO2 nanoparticles and MnO2 nanosheets as oxygen-release systems for biomedical applications. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
ACS Applied Nano Materials, v. 5, 2022. |
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Páginas: |
14425 - 14436 |
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ISSN: |
2574-0970 |
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DOI: |
https://doi.org/10.1021/acsanm.2c02774 |
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Idioma: |
Inglês |
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Conteúdo: |
Oxygen-generating biomaterials have the potential to improve tissue engineering and regenerative therapeutic strategies. However, the development of such materials capable of controlling the local partial pressure of oxygen (pO2) in the long term is still a major challenge. Here we report nanostructured composite membranes comprising electrospun fibers exhibiting a bead-on-string structure as a controlled oxygen-release system for periodontitis treatment. For this, calcium peroxide nanoparticles (CaO2 NPs) and manganese dioxide nanosheets (MnO2 NSs) were incorporated into the structure of hydrophobic electrospun poly (lactic acid) (PLA)-based nanofibers. We use CaO2 NPs as hydrogen peroxide (H2O2)-generating precursors when exposed to water, while MnO2 NSs were applied as a nanozyme to catalyze the decomposition of H2O2 to the final oxygen product. Our results revealed that the beads on the fibrous structure acted as reservoirs of CaO2 NPs and MnO2 NSs. Moreover, the composite membranes provided sustained oxygen release over 7 days, where levels were modulated by the CaO2 NP content. Such constructs exhibited suitable physicochemical properties and antimicrobial activities against some bacteria (e.g., Porphyromonas gingivalis and Treponema denticola) typically associated with aggressive and chronic periodontitis. In vitro studies also revealed that the membranes were not cytotoxic toward human oral keratinocyte (Nok-si) cells as well as enhanced the cell viability when high content of CaO2 NP and MnO2 NS were incorporated into the fiber?s structure. Taken together, our results demonstrate that the nanostructured composite membranes show potential to be employed as oxygen-release platforms for periodontal tissue regeneration. MenosOxygen-generating biomaterials have the potential to improve tissue engineering and regenerative therapeutic strategies. However, the development of such materials capable of controlling the local partial pressure of oxygen (pO2) in the long term is still a major challenge. Here we report nanostructured composite membranes comprising electrospun fibers exhibiting a bead-on-string structure as a controlled oxygen-release system for periodontitis treatment. For this, calcium peroxide nanoparticles (CaO2 NPs) and manganese dioxide nanosheets (MnO2 NSs) were incorporated into the structure of hydrophobic electrospun poly (lactic acid) (PLA)-based nanofibers. We use CaO2 NPs as hydrogen peroxide (H2O2)-generating precursors when exposed to water, while MnO2 NSs were applied as a nanozyme to catalyze the decomposition of H2O2 to the final oxygen product. Our results revealed that the beads on the fibrous structure acted as reservoirs of CaO2 NPs and MnO2 NSs. Moreover, the composite membranes provided sustained oxygen release over 7 days, where levels were modulated by the CaO2 NP content. Such constructs exhibited suitable physicochemical properties and antimicrobial activities against some bacteria (e.g., Porphyromonas gingivalis and Treponema denticola) typically associated with aggressive and chronic periodontitis. In vitro studies also revealed that the membranes were not cytotoxic toward human oral keratinocyte (Nok-si) cells as well as enhanced the cell viability when high ... Mostrar Tudo |
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Palavras-Chave: |
Bead-on-string fibers; Electrospinning; Oxygen generation; Periodontal regeneration. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02640naa a2200277 a 4500
001 2147023
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a2574-0970
024 7 $ahttps://doi.org/10.1021/acsanm.2c02774$2DOI
100 1 $aSANTOS, D. M. dos
245 $aElectrospun composite bead-on-string nanofibers containing CaO2 nanoparticles and MnO2 nanosheets as oxygen-release systems for biomedical applications.$h[electronic resource]
260 $c2022
300 $a14425 - 14436
520 $aOxygen-generating biomaterials have the potential to improve tissue engineering and regenerative therapeutic strategies. However, the development of such materials capable of controlling the local partial pressure of oxygen (pO2) in the long term is still a major challenge. Here we report nanostructured composite membranes comprising electrospun fibers exhibiting a bead-on-string structure as a controlled oxygen-release system for periodontitis treatment. For this, calcium peroxide nanoparticles (CaO2 NPs) and manganese dioxide nanosheets (MnO2 NSs) were incorporated into the structure of hydrophobic electrospun poly (lactic acid) (PLA)-based nanofibers. We use CaO2 NPs as hydrogen peroxide (H2O2)-generating precursors when exposed to water, while MnO2 NSs were applied as a nanozyme to catalyze the decomposition of H2O2 to the final oxygen product. Our results revealed that the beads on the fibrous structure acted as reservoirs of CaO2 NPs and MnO2 NSs. Moreover, the composite membranes provided sustained oxygen release over 7 days, where levels were modulated by the CaO2 NP content. Such constructs exhibited suitable physicochemical properties and antimicrobial activities against some bacteria (e.g., Porphyromonas gingivalis and Treponema denticola) typically associated with aggressive and chronic periodontitis. In vitro studies also revealed that the membranes were not cytotoxic toward human oral keratinocyte (Nok-si) cells as well as enhanced the cell viability when high content of CaO2 NP and MnO2 NS were incorporated into the fiber?s structure. Taken together, our results demonstrate that the nanostructured composite membranes show potential to be employed as oxygen-release platforms for periodontal tissue regeneration.
653 $aBead-on-string fibers
653 $aElectrospinning
653 $aOxygen generation
653 $aPeriodontal regeneration
700 1 $aDIAS, L. M.
700 1 $aSURUR, A. K.
700 1 $aMORAES, D. A. de
700 1 $aPAVARINA, A. C.
700 1 $aFONTANA, C. R.
700 1 $aCORREA, D. S.
773 $tACS Applied Nano Materials$gv. 5, 2022.
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