Showing papers in "Colloids and Surfaces B: Biointerfaces in 2004"

TL;DR: Three different approaches toward the formation of nano-fibrous materials have emerged: self-assembly, electrospinning and phase separation; each has a unique set of characteristics, which lends to its development as a scaffolding system.

TL;DR: Adhesion of 8 strains of bacteria, under conditions of low and high-ionic strength to 11 different surfaces and examined adhesion as a function of charge, hydrophobicity (water contact angle) and surface energy was significantly correlated with total adhesion free energy.

TL;DR: This paper examines the current research in the materials science and the critical issues and challenges in these materials systems that require further research before application in biomedical industry.

TL;DR: Comparison of all the resulting particles size shows that silver nanoparticles are much larger than others (Au, Pt and Pd).

TL;DR: The influence of electrostatic interactions on protein adsorption was studied by comparing the adsorbed amount as a function of pH, and it is shown that at pH values where the protein is electrostatically repelled by the sorbent, higher ionic strengths increase Adsorption, and for electrostatic attraction higher Ionic strengths decrease adsor adaptation.

TL;DR: Investigation of the phase behavior and microstructure of monolayer shells coating micron-scale bubbles (microbubbles) typically used in biomedical applications finds factors that affect shell formation and evolution, as well as implications for the rational design of microbubbles in medical applications.

TL;DR: Results of DSC and WXRD indicated that paclitaxel was transferred from the crystalline state to amorphous state after loading and the lyophilized powder of micellar system could be reconstituted easily in aqueous media even after 2 months storage at 4 degrees C without the change of pac litaxel entrapment and micelle size.

TL;DR: The biosorption of nickel( II) and copper(II) ions from aqueous solution by dried Streptomyces coelicolor A3(2) was studied as a function of concentration, pH and temperature to show an excellent fit to the Freundlich isotherm.

TL;DR: Almost 19 times higher concentration of rifampsicin was found to be incorporated in alveolar macrophages when rifampicin-loaded PLGA microspheres were added to the cell culture medium than when rIFampic in solution was added.

TL;DR: The variation of CMC values as a function of NaCl concentration obtained from the surface tension measurements and critical packing parameter (CPP) calculations show that spherical micelles, bilayer and rod like micells are formed in the rhamnolipid solutions as afunction of the Na Cl concentration.

TL;DR: From analysis (SDS-PAGE, immunoblotting) of the proteins eluted after plasma exposure, it was found that the grafted surfaces and the unmodified substrate adsorbed the same proteins in roughly the same proportions, suggesting that adsorption to the PEO surfaces occurs on patches of bare substrate.

TL;DR: The results show that the AFM can be used to obtain good images of intact and deformed vesicle by tapping mode, as well as to probe the integrity and bilayer structure of the vesicles.

TL;DR: The CMC of SDS is shown to correlate with the nature of the alkyl groups in the RTILs; SDS showed appreciably higher CMCs in presence of ionic liquids 2 and 3, whereas in the presence of Ionic liquids 4, 5, and 6 much smaller C MCs were observed.

TL;DR: Quantitative analysis of competitive milk protein adsorption to air/water interfaces in aqueous foam was performed by capillary electrophoresis, indicating that electrostatic interactions do not play a key role in competitive Adsorption.

TL;DR: It is significant that this new zwitterionic sulfobetaine grafted PUVC have improved antithrobogenicity and it is effective that the inner surface of vascular catheter with inner diameter in only 3mm can be grafted with PDMMSA by using ozonization method.

TL;DR: The obtained results indicate that the affinity of cholesterol to saturated/unsaturated phosphatidylcholines does not differ significantly, and revealed strong influence of the kind of a polar group on the cholesterol-phospholipid interactions.

TL;DR: Swelling studies indicate that the addition of silica decreases the stability of the gels by inducing gelatine depletion in solution, and a model is proposed for the formation of the composites, based on the electrostatic interactions arising between silicates and polymer chains.

TL;DR: Since the morphology of microcapsules was considerably affected by a prolonged stirring of the reaction medium, the coacervation and reticulation time were optimized in order to preserve the homogeneity of the micro Capsules size distribution and the microencapsulation efficiency.

TL;DR: Transmission diffusing wave spectroscopy has been used to study and compare three milk gelling systems and it is concluded that they can provide important information on the pre-gelation states of aggregating systems.

TL;DR: In this article, the authors investigated the mechanism of protein repellency by surfaces grafted with poly(ethylene oxide) (PEO) surfaces and found that the level of adsorption decreased with increasing PEO chain length, reaching a lower limit at a PEO MW of 2000.

TL;DR: The results confirm that physico-chemical surface properties of oral bacterial strains play a role in bacterial retention to implant materials in the presence of adsorbed salivary proteins and suggest that both materials could be suitable for use as transgingival abutment or healing implant components.

TL;DR: The zwitterionic monomer of sulfobetaine was graft polymerized onto polyurethane (PU) surface in a three-step heterogenous system through the vinyl bonds of acrylic acid (AA) or hydroxyethyl methacrylate (HEMA), which was immobilized with hexamethylene diisocyanate (HDI) beforehand.

TL;DR: The monotonic decrease in scattered light intensity with the wave vector was associated with a nucleation and growth phase separation mechanism and would be responsible for the decrease in the number and volume mean diameters and fractal dimension of beta-lg/LM-pectin complexes over time.

TL;DR: The activatory effect of thymol on the binding of [3H]-FNZ was observed even in the presence of the allosteric activator gamma-aminobutyric acid at a concentration of maximal activity, and was blocked by the GABA antagonist bicuculline.

TL;DR: Yield stress of whey protein isolate (WPI) foams was dependent on pH, salt type and salt concentration, and comparisons with interfacial rheological data suggested the protein's capacity to contribute towards tau was related to theprotein's potential at forming strong, elastic interfaces throughout the structure.

TL;DR: Monodispersed rifampicin (RFP)-loaded poly(lactide-co-glycolide) (PLGA) microspheres were prepared by a solvent evaporation method and a membrane emulsification technique using Shirasu porous glass (SPG) membranes was applied in order to control the sizes of the micro spheres.

TL;DR: In this article, a series of π-A curves at every 0.1 mol fraction of each sterol for the three combinations of mixed systems were obtained at 25.0 °C.

TL;DR: The proposed microcapsules provide a new mode for injection-type self-regulated drug delivery systems having the capability of adapting the release rate of drugs such as insulin in response to changes in glucose concentration, which is highly attractive for diabetes therapy.

TL;DR: The aim of this work was to compare the ability of strains of Candida albicans and Candida dubliniensis to adhere to acrylic and hydroxyapatite (HAP), and to interpret the adhesion results.

TL;DR: The improved blood compatibility was obtained by grafting copolymerization with zwitterionic monomer of sulfobetaine onto polyurethane film and introducing vinyl groups onto surface through DCC and AA is a novel method to functionalize polyUREthane for further modification.