Results 121 to 130 of about 2,789 (155)

The preparation of calcium carbonate crystals in pluronic F68 solution

Journal of Molecular Liquids, 2012
Abstract Nonionic pluronic amphiphilic triblock copolymer F68 was employed to control the growth of calcium carbonate in a biomineralization process. The effects of the concentrations of F68, Ca2+ and CO32−, pH values and temperatures were investigated systematically. The as-obtained CaCO3 particles were characterized by scanning electron microscopy (
Li Yu, Jingjing Jiao
exaly   +2 more sources

Reduction of splenic vascular resistance during perfusion by pluronic F68

Journal of Surgical Research, 1968
Abstract Pluronic F68 (a nonionic surface-active agent) has been shown to decrease the vascular resistance in a series of 10 pig spleens perfused with human blood. Addition of Pluronic F68 produced a vascular resistance during heterologous perfusion comparable to that noted during homologous perfusion.
A R, Moore, B C, Paton, B, Eiseman
openaire   +2 more sources

Effect of Pluronic F68 and phospholipids liposomes modified with Pluronic F68 on the human neutrophils functional activity

Journal of Pharmaceutical Sciences
The sizes of Pluronic F68 micelles in water and phosphate-buffered saline (pH 7.4) were determined using dynamic light scattering. Micelles formation was observed at Pluronic F68 concentrations of 0.7 wt % and higher, with particle sizes not exceeding 5 nm.
Natalya, Lotosh, Natalya, Marchenkova, Darya, Shaposhnikova, Alla, Selishcheva   +3 more
exaly   +3 more sources

The Cardiovascular Effects of the Surfactant Pluronic F68 in Anesthetized Dogs

1990
We tested the cardiovascular actions of the surfactant Pluronic F68 by infusing it into anesthetized dogs, in doses approximating those which would be received when Fluosol-DA were used to resuscitate moderate or severe hemorrhage (0.66 and 1.11 g/Kg).
A M, Gosselin, G P, Biro
openaire   +2 more sources

Improving the stability of the malachite green method for the determination of phosphate using Pluronic F68

Analytical Biochemistry, 2020
The analytical determination of phosphate constitutes a fundamental step for the evaluation of catalytic activities of many enzymes involved in the hydrolysis of phosphate-containing biomolecules. The most sensitive colorimetric methods to quantify phosphate are based on measuring the spectral changes produced by the adsorption of malachite green to 12-
Martínez Gache, Santiago A., Recoulat Angelini, Alvaro Agustin, Sabeckis, Maria Lurdes, Gonzalez Flecha, Francisco Luis   +3 more
openaire   +3 more sources

Novel Behavior of Heat of Micellization of Pluronics F68 and F88 in Aqueous Solutions

Langmuir, 2008
It is well understood that the heat of micellization for surfactants is monotonically decreased along with an increase in temperature. However, this behavior for polymeric surfactants has never been carefully examined. In this study, the heat of micellization of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock ...
Tsui, HW, Hsu, YH, Wang, JH, Chen, LJ
openaire   +3 more sources

Effects of Pluronic F68 on Manganese Peroxidase Production by Pelletized Phanerochaete chrysosporium

Applied Biochemistry and Biotechnology, 2011
In this study, a new process was developed for manganese peroxidase (MnP) production by Phanerochaete chrysosporium under an agitated and aerated cultivation condition. It was found that change of the inoculum from spore suspension to pellets resulted in enhanced MnP production of 200 U/L in rotated shake flasks.
Zhi-Min, Li, Yan, Liu, Zhan-You, Chi, Shu-lin, Chen   +3 more
openaire   +2 more sources

Influence of Pluronic® F68 on Ceftazidime Biological Activity in Parenteral Solutions

Journal of Pharmaceutical Sciences, 2011
β-Lactam antimicrobials are known to have a low concentration/therapeutic response. However, extending the period in which β-lactam are free in the plasma does directly influence therapeutic outcomes. The objective of this study was to evaluate the influence of Pluronic® F68 on the antimicrobial activity of ceftazidime when admixed with aminophylline ...
Carolina Alves, Dos Santos, Gabriel Borghesan, Ribeiro, Marcos Camargo, Knirsch, Adalberto, Pessoa Junior, Thereza Christina Vessoni, Penna   +4 more
openaire   +2 more sources

Synergistic Enhancement of Itraconazole Dissolution by Ternary System Formation with Pluronic F68 and Hydroxypropylmethylcellulose [PDF]

Scientia Pharmaceutica, 2009
Pluronic F68 is a surfactant which can inhibit CYP3A4, an enzyme responsible for hepatic metabolism of many drugs including itraconazole. This study investigated the effect of incorporation of Pluronic F68 as a ternary component in solid dispersions of itraconazole with hydroxypropyl-methylcellulose (HPMC) on the dissolution rate of itraconazole ...
Gamal M El Maghraby, Abdullah H Alomrani
exaly   +2 more sources

Drug release from Pluronic F68 hydrogels

Physics of Fluids
The evaluation of drug percutaneous absorption plays a pivotal role in assessing the efficacy of dermal/transdermal drug delivery systems. Drug therapies rely on biomedical systems capable of precisely regulating drug dosage, controlling the rate of drug release, and mitigating the common side effects associated with many drug delivery formulations ...
Nicola Antonio Di Spirito, Chiara Di Baia, Nino Grizzuti, Rossana Pasquino, Bruno de Gennaro   +4 more
openaire   +2 more sources