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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
05/12/2014 |
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Data da última atualização: |
20/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FRESCHI, G. P. G.; NOGUEIRA, A. R. de A. |
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Afiliação: |
GIAN PAULO GIOVANNI FRESCHI, Universidade Federal de Alfenas; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Speciation of different forms of Se in bovine blood by enzymatic extraction and HPLC/Photo-Reduction/HG-ICP-OES. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Atomic Spectroscopy, v. 35, n. 5, p. 205-212, 2014. |
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Idioma: |
Português |
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Conteúdo: |
Selenium is essential for the vital functions of the human and animal organism, such as growth, reproduction, prevention, and the protection of its muscular integrity. Although this dependence is well characterized, aspects related to selenium speciation still need to be studied further. This work describes the development of an alternative method for selenium speciation in bovine blood samples using a hyphenated analytical system (HPLC-UV-HG-ICP-OES). The influence of the main parameters related to the detection of Se species, such as separation efficiency, photo-reduction and hydride generation, were studied. Enzymatic reaction with proteinase-K (1 day at 37ºC) was employed for sample preparation. An on-line UV reduction system was adopted to convert the different species of Se to Se(IV). For the chromatographic system, equipped with an anionic exchange column, a phosphate-buffer of 40 mmol L-1 in the pH of 6.0 was used as the mobile phase (flow rate of 1 mL min-1 ) for separation of the different Se species. To increase the sensitivity, hydride generation was used, followed by inductively coupled plasma optical emission spectrometry (ICP-OES) analysis. The developed method for Se speciation in bovine blood samples was performed completely on-line. The limits of detection (LODs) were 9.5, 7.2, 5.8, 3.1, 4.4 ?g L-1 and the limits of quantification (LOQs) were 31.4, 23.9, 20.1, 10.5, and 14.5 ?g L-1 for selenomethylselenocysteine, seleno-DL-methionine, Se(IV), and Se(VI), respectively. The recoveries obtained were 96% for Se(IV), 98% for Se(VI), 91% for selenocystamine, 89% for seleno-cysteine, and 84% for seleno-methionine. MenosSelenium is essential for the vital functions of the human and animal organism, such as growth, reproduction, prevention, and the protection of its muscular integrity. Although this dependence is well characterized, aspects related to selenium speciation still need to be studied further. This work describes the development of an alternative method for selenium speciation in bovine blood samples using a hyphenated analytical system (HPLC-UV-HG-ICP-OES). The influence of the main parameters related to the detection of Se species, such as separation efficiency, photo-reduction and hydride generation, were studied. Enzymatic reaction with proteinase-K (1 day at 37ºC) was employed for sample preparation. An on-line UV reduction system was adopted to convert the different species of Se to Se(IV). For the chromatographic system, equipped with an anionic exchange column, a phosphate-buffer of 40 mmol L-1 in the pH of 6.0 was used as the mobile phase (flow rate of 1 mL min-1 ) for separation of the different Se species. To increase the sensitivity, hydride generation was used, followed by inductively coupled plasma optical emission spectrometry (ICP-OES) analysis. The developed method for Se speciation in bovine blood samples was performed completely on-line. The limits of detection (LODs) were 9.5, 7.2, 5.8, 3.1, 4.4 ?g L-1 and the limits of quantification (LOQs) were 31.4, 23.9, 20.1, 10.5, and 14.5 ?g L-1 for selenomethylselenocysteine, seleno-DL-methionine, Se(IV), and Se(VI), re... Mostrar Tudo |
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Palavras-Chave: |
Bovine blood; Enzymatic estraction; Se. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113167/1/Binder2.pdf
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Marc: |
LEADER 02190naa a2200169 a 4500
001 2001777
005 2023-03-20
008 2014 bl uuuu u00u1 u #d
100 1 $aFRESCHI, G. P. G.
245 $aSpeciation of different forms of Se in bovine blood by enzymatic extraction and HPLC/Photo-Reduction/HG-ICP-OES.$h[electronic resource]
260 $c2014
520 $aSelenium is essential for the vital functions of the human and animal organism, such as growth, reproduction, prevention, and the protection of its muscular integrity. Although this dependence is well characterized, aspects related to selenium speciation still need to be studied further. This work describes the development of an alternative method for selenium speciation in bovine blood samples using a hyphenated analytical system (HPLC-UV-HG-ICP-OES). The influence of the main parameters related to the detection of Se species, such as separation efficiency, photo-reduction and hydride generation, were studied. Enzymatic reaction with proteinase-K (1 day at 37ºC) was employed for sample preparation. An on-line UV reduction system was adopted to convert the different species of Se to Se(IV). For the chromatographic system, equipped with an anionic exchange column, a phosphate-buffer of 40 mmol L-1 in the pH of 6.0 was used as the mobile phase (flow rate of 1 mL min-1 ) for separation of the different Se species. To increase the sensitivity, hydride generation was used, followed by inductively coupled plasma optical emission spectrometry (ICP-OES) analysis. The developed method for Se speciation in bovine blood samples was performed completely on-line. The limits of detection (LODs) were 9.5, 7.2, 5.8, 3.1, 4.4 ?g L-1 and the limits of quantification (LOQs) were 31.4, 23.9, 20.1, 10.5, and 14.5 ?g L-1 for selenomethylselenocysteine, seleno-DL-methionine, Se(IV), and Se(VI), respectively. The recoveries obtained were 96% for Se(IV), 98% for Se(VI), 91% for selenocystamine, 89% for seleno-cysteine, and 84% for seleno-methionine.
653 $aBovine blood
653 $aEnzymatic estraction
653 $aSe
700 1 $aNOGUEIRA, A. R. de A.
773 $tAtomic Spectroscopy$gv. 35, n. 5, p. 205-212, 2014.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
21/04/2024 |
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Data da última atualização: |
23/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
ONORATO, G. de C.; AMARAL, D. L. A. S. do; OLIVEIRA, L. F. C. de; BRANDAO, H. de M.; MUNK, M. |
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Afiliação: |
GEOVANA DE CARVALHO ONORATO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; DANIELLE LUCIANA AURORA SOARES DO AMARAL, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; LUIZ FERNANDO CAPPA DE OLIVEIRA, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; HUMBERTO DE MELLO BRANDAO, CNPGL; MICHELE MUNK, UNIVERSIDADE FEDERAL DE JUIZ DE FORA. |
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Título: |
Barium titanate nanoparticles exhibit cytocompatibility in cultured bovine fibroblasts: a model for dermal exposure. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Current Journal of Applied Science and Technology, v. 43, n. 5, article CJAST.115461, 2024. |
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DOI: |
https://doi.org/10.9734/cjast/2024/v43i54372 |
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Idioma: |
Inglês |
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Conteúdo: |
The emergence of barium titanate nanoparticles (BaTiO3 NPs) represents an advancement in various fields such as technology, health, and agribusiness. However, increased production heightens the risk of their dispersion into the environment, thereby raising concerns about potential exposure to animals and humans, including the risk of dermal exposure. This study explores the chemical-physical properties of BaTiO3 NPs and their cytocompatibility using a bovine fibroblast cell model. The size and Zeta potential of the NPs were analyzed using scanning electron microscopy and dynamic light scattering technique. Raman spectroscopy was used to characterize the composition of the BaTiO3 NPs. Bovine fibroblasts were exposed in vitro to NPs (0.1 to 100 μg mL-1 ) for 24 hours to evaluate the cytocompatibility using the Thiazolyl Blue Tetrazolium Bromide assay and Trypan Blue exclusion test. The data were evaluated by analysis of variance and the means compared by the Tukey test. Scanning electron microscopy revealed that BaTiO3 NPs measured approximately 100 nm. Dynamic light scattering analysis indicated a hydrodynamic size of 149.27 nm with a polydispersion index of 0.37, and the Zeta potential was -13mV. Raman spectroscopy analysis highlighted the cubic phase of BaTiO3 NPs. Cytotoxicity tests demonstrated that BaTiO3 NPs did not affect cell viability, with 10 μg mL-1 resulting in enhanced cell proliferation. Overall, these findings underscore the non-toxic characteristics of BaTiO3 NPs in fibroblast cells, positioning them as promising and cytocompatible nanomaterials. MenosThe emergence of barium titanate nanoparticles (BaTiO3 NPs) represents an advancement in various fields such as technology, health, and agribusiness. However, increased production heightens the risk of their dispersion into the environment, thereby raising concerns about potential exposure to animals and humans, including the risk of dermal exposure. This study explores the chemical-physical properties of BaTiO3 NPs and their cytocompatibility using a bovine fibroblast cell model. The size and Zeta potential of the NPs were analyzed using scanning electron microscopy and dynamic light scattering technique. Raman spectroscopy was used to characterize the composition of the BaTiO3 NPs. Bovine fibroblasts were exposed in vitro to NPs (0.1 to 100 μg mL-1 ) for 24 hours to evaluate the cytocompatibility using the Thiazolyl Blue Tetrazolium Bromide assay and Trypan Blue exclusion test. The data were evaluated by analysis of variance and the means compared by the Tukey test. Scanning electron microscopy revealed that BaTiO3 NPs measured approximately 100 nm. Dynamic light scattering analysis indicated a hydrodynamic size of 149.27 nm with a polydispersion index of 0.37, and the Zeta potential was -13mV. Raman spectroscopy analysis highlighted the cubic phase of BaTiO3 NPs. Cytotoxicity tests demonstrated that BaTiO3 NPs did not affect cell viability, with 10 μg mL-1 resulting in enhanced cell proliferation. Overall, these findings underscore the non-toxic characteristics of BaTiO3 ... Mostrar Tudo |
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Palavras-Chave: |
Fibroblasto bovino; Modelos in vitro; Nanomaterial; Nanomaterial cerâmico; Piezoeletricidade; Titanato. |
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Thesagro: |
Bário. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02467naa a2200265 a 4500
001 2163766
005 2024-04-23
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.9734/cjast/2024/v43i54372$2DOI
100 1 $aONORATO, G. de C.
245 $aBarium titanate nanoparticles exhibit cytocompatibility in cultured bovine fibroblasts$ba model for dermal exposure.$h[electronic resource]
260 $c2024
520 $aThe emergence of barium titanate nanoparticles (BaTiO3 NPs) represents an advancement in various fields such as technology, health, and agribusiness. However, increased production heightens the risk of their dispersion into the environment, thereby raising concerns about potential exposure to animals and humans, including the risk of dermal exposure. This study explores the chemical-physical properties of BaTiO3 NPs and their cytocompatibility using a bovine fibroblast cell model. The size and Zeta potential of the NPs were analyzed using scanning electron microscopy and dynamic light scattering technique. Raman spectroscopy was used to characterize the composition of the BaTiO3 NPs. Bovine fibroblasts were exposed in vitro to NPs (0.1 to 100 μg mL-1 ) for 24 hours to evaluate the cytocompatibility using the Thiazolyl Blue Tetrazolium Bromide assay and Trypan Blue exclusion test. The data were evaluated by analysis of variance and the means compared by the Tukey test. Scanning electron microscopy revealed that BaTiO3 NPs measured approximately 100 nm. Dynamic light scattering analysis indicated a hydrodynamic size of 149.27 nm with a polydispersion index of 0.37, and the Zeta potential was -13mV. Raman spectroscopy analysis highlighted the cubic phase of BaTiO3 NPs. Cytotoxicity tests demonstrated that BaTiO3 NPs did not affect cell viability, with 10 μg mL-1 resulting in enhanced cell proliferation. Overall, these findings underscore the non-toxic characteristics of BaTiO3 NPs in fibroblast cells, positioning them as promising and cytocompatible nanomaterials.
650 $aBário
653 $aFibroblasto bovino
653 $aModelos in vitro
653 $aNanomaterial
653 $aNanomaterial cerâmico
653 $aPiezoeletricidade
653 $aTitanato
700 1 $aAMARAL, D. L. A. S. do
700 1 $aOLIVEIRA, L. F. C. de
700 1 $aBRANDAO, H. de M.
700 1 $aMUNK, M.
773 $tCurrent Journal of Applied Science and Technology$gv. 43, n. 5, article CJAST.115461, 2024.
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