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| Caminade,Anne-Marie; Turrin,Cédric-Olivier; Majoral,Jean-Pierre. |
| Dendrimers are hyperbranched and perfectly defined macromolecules, constituted of branches emanating from a central core in an iterative fashion. Phosphorhydrazone dendrimers constitute a special family of dendrimers, possessing one phosphorus atom at each branching point. The internal structure of these dendrimers is hydrophobic, but hydrophilic terminal groups can induce the solubility of the whole structure in water. Indeed, the properties of these compounds are mainly driven by the type of terminal groups their bear; this is especially true for the biological properties. For instance, positively charged terminal groups are efficient for transfection experiments, as drug carriers, as anti-prion agents, and as inhibitor of the aggregation of Alzheimer's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dendrimers; Phosphorhydrazone dendrimers; Biological properties; Nanomedicine. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700004 |
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| Souza, Edison Antonio de; Universidade Estadual Paulista “Júlio de Mesquista Filho"; Inoue, Hemily Tiemi; Universidade Estadual Paulista “Júlio de Mesquista Filho"; Fernandes Júnior, Ary; Universidade Estadual Paulista “Júlio de Mesquista Filho"; Veiga, Nabor; Universidade Estadual Paulista “Júlio de Mesquista Filho"; Orsi, Ricardo de Oliveira; UNESP - Botucat - SP. |
| The antibacterial activity of propolis produced throughout the year by different methods of collection (‘intelligent’ collector of propolis - ICP; plastic screen - PC; conventional scraping - CS) on Staphylococcos aureus and Escherichia coli is investigated. Fifteen beehives (five per collector) of Africanized Apis mellifera were used. Monthly produced propolis, with the same collection technique, was mixed for the preparation of the extract. The ethanol extract of propolis (EEP) was prepared at the ratio of 30% (30 g of propolis, completing the volume for 100 mL with ethanol 70%). Two microorganisms, a positive bacterium Gram Staphylococcus aureus and a negative bacterium Gram Escherichia coli, through the methodology of diffusion in agar, were used for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apiculture; Biological properties; Quality; Bacteria. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21436 |
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| Kaczorowski,Witold; Batory,Damian; Jakubowski,Witold; Szymanski,Witold; Komorowski,Piotr; Walkowiak,Bogdan; Sanak,Marek; Niedzielski,Piotr. |
| The aim of this study was to examine the thrombogenic properties of polyurethane that was surface modified with carbon coatings. Physicochemical properties of manufactured coatings were investigated using transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray Photoelectron Spectroscopy (XPS), Raman spectroscopy and contact angle measurement methods. Samples were examined by the Impact-R method evaluating the level of platelets activation and adhesion of particular blood cell elements. The analysis of antimicrobial resistance against E. coli colonization and viability of endothelial cells showed that polyurethane modified with use of carbon layers constituted an interesting solution for biomedical application. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diamond-like carbon; Atomic force microscopy (AFM); X-ray photoelectron spectroscopy XPS; Raman spectroscopy; Biological properties. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100600 |
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