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| Pouri,Saeedeh; Motamedi,Hossein; Honary,Soheyla; Kazeminezhad,Iraj. |
| ABSTRACT Nanoparticles due to their unique properties have attracted more attention and their bacterial biosynthesis is more favorable because is environmental friendly and the size and yield of nanoparticles can be optimized. The aim of the present study was biosynthesis of Selenium nanoparticles using Bacillus cereus. For this purpose, bacterial culture was prepared in the presence of sodium selenate solution and incubated (30°C, 24 h). The produced nanoparticles were purified through consequent centrifugation, washing with 0.9% NaCl, sonication, washing with Tris- HCl containing Sodium dodecyl sulfate (SDS) and finally isolation with water- octanol two phase systems. Then using Ultraviolet-Visible spectroscopy, dynamic light scattering (DLS), scaning... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus cereus Green chemistry Selenium; Nanoparticle. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100456 |
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| Gagnon, C.; Bruneau, Audrey; Turcotte, P.; Pilote, M.; Gagne, F.. |
| Once released in the environment, engineered nanoparticles (NPs) can undergo important transformation resulting in changed properties under natural conditions. This study investigated the fate, the bioavailability and the immunotoxicity of cerium oxide (CeO2) nanoparticles in fish exposed to CeO2 in representative surface waters differing in pH, organic matter content and conductivity (green and brown waters). Following an incubation period of NP CeO2 in different surface waters, particle size distribution and shape were determined by ultrafiltration and ICP-mass spectrometry, electronic microscopy and dynamic light scattering (DSL). Bioaccumulation and effect biomarkers focusing on the immune system responses (viability of immune cells and phagocytic... |
| Tipo: Text |
Palavras-chave: Nanoparticle; Nanotoxicity; Bioaccumulation; Transformation. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00433/54422/55765.pdf |
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| COSTA, A. C. da S.; BRANDAO, H. de M.; SILVA, S. R. da; BENTES-SOUSA, A. R.; DINIZ JUNIOR, J. A. P.; PINHEIRO, J. de J. V.; MELO, M. de F. C. de; SILVA JUNIOR, J. O. C.; MATOS, E. R.; RIBEIRO-COSTA, R. M.. |
| 2015 |
| Tipo: Nota Técnica/Nota Científica (ALICE) |
Palavras-chave: Chitosan; Fluorescein isothiocyanate; Mucoadhesion; Nanoparticle; Tambaqui; Tripoly-phosphate. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037650 |
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| Fattahi,Ali; Ghiasi,Mansoureh; Mohammadi,Pardis; Hosseinzadeh,Leila; Adibkia,Khosro; Mohammadi,Ghobad. |
| In the current work, a sustained drug delivery system of flutamide (FLT) was developed using Poly(D,L-lactide-co-glycolide) (PLGA) decorated bypoly(ethylene glycol) (PEG) grafted prazosin (PLGA-PEG-Praz) as a targeting moiety. In a multi-step reaction, PLGA was linked to PEG and prazosin. The structure of the synthesized polymers was confirmed by FTIR and 1H-NMR. Flutamide-loaded nanoparticles were prepared by quasi-emulsion solvent diffusion technique. The nanoparticles were evaluated for size, zeta potential, polydispersity index, drug crystallinity, loading efficiency, and release properties. Also, the physicochemical properties of the nanoparticles were analyzed using Scanning Electron Microscopy (SEM), Differential Scanning Calorimetry, and Powder... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nanoparticle; PLGA; Flutamide; Prazosin; Prostate cancer; Drug delivery. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000400609 |
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| Monteiro,Lis Marie; Tavares,Guilherme Diniz; Ferreira,Elizabeth Igne; Consiglieri,Vladi Olga; Bou-Chacra,Nadia Araci; Löbenberg,Raimar. |
| Hydroxymethylnitrofurazone (NFOH) is a new compound with potential leishmanicidal and trypanocidal activity. Despite its effectiveness, the formulators have to overcome its poor aqueous solubility. Recently, polymeric nano-scale drug delivery systems have proposed for the treatment of neglected diseases. As several studies have confirmed the advantages of such formulations, and this approach provides new analytical challenges, including the need to detect trace amounts of the drug. A suitable method was developed and validated for NFOH determination bound to poly (n-butylcyanoacrylate) (PBCA) nanoparticles. The chromatographic separation was achieved using a C18 column maintained at 25 ºC and an isocratic mobile phase consisting of water and acetonitrile:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydroxymethylnitrofurazone/determinação; Nanoparticle; High-performance liquid chromatography/reverse phase/quantitative analysis; Poly(n-butylcyanoacrylate)/nanoparticles/encapsulation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000300561 |
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