Showing 1-30 of 65 results for "

437190

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Jessica G Coleman et al.
Environmental toxicology and chemistry, 32(9), 2069-2077 (2013-05-21)
As the production and applications of silver nanoparticles (AgNPs) increase, it is essential to characterize fate and effects in environmental systems. Nanosilver materials may settle from suspension; therefore, the authors' objective was to utilize environmentally relevant bioassays and study the...
Lindsay A Wegiel et al.
Pharmaceutical development and technology, 19(8), 976-986 (2013-11-07)
We have investigated the physical stability of amorphous curcumin dispersions and the role of curcumin-polymer intermolecular interactions in delaying crystallization. Curcumin is an interesting model compound as it forms both intra and intermolecular hydrogen bonds in the crystal. A structurally...
Patricia C Buchsel
Expert opinion on drug metabolism & toxicology, 4(11), 1449-1454 (2008-10-28)
Painful oral lesions in patients with cancer, HIV or aphthous ulcers can cause significant pain and discomfort. Those with oral mucositis (OM) resulting from high-dose chemotherapy or irradiation are the most at risk for painful lesions that lead to significant...
Atsuko Adachi et al.
Contact dermatitis, 48(3), 133-136 (2003-05-21)
A 59-year-old woman who had had several episodes of contact urticaria after hair treatment, developed anaphylaxis after vaginal application of povidone-iodine solution for disinfection. Prick tests showed wheal-and-flare responses to both povidone-iodine (0.1% aqueous) and polyvinylpyrrolidone (povidone, PVP) (0.001% aq.)...
Kim M Newton et al.
Environmental toxicology and chemistry, 32(10), 2356-2364 (2013-06-14)
The most persistent question regarding the toxicity of silver nanoparticles (AgNPs) is whether this toxicity is due to the nanoparticles themselves or the silver ions (Ag(+)) they release. The present study investigates the role of surface coating and the presence...
Yujie Xiong et al.
Journal of the American Chemical Society, 129(12), 3665-3675 (2007-03-06)
This paper describes a simple and versatile method for growing highly anisotropic nanostructures of Pd, single-crystal nanobars bounded by {100} facets and single-crystal nanorods with their side surfaces enclosed by {100} and {110} facets. According to thermodynamic arguments, Pd atoms...
Liandong Hu et al.
Pakistan journal of pharmaceutical sciences, 26(3), 629-636 (2013-04-30)
Solid dispersion technique has been developed many years for improving solubility of water-insoluble drugs, aiming to achieve a better oral bioavailability. However, this technique exhibits many inconveniences when used for large-scale tableting procedures. The objective of current research work was...
Synthesis and characterization of fivefold twinned nanorods and right bipyramids of palladium
Xiong Y, et al.
Chemical Physics Letters, 440(4), 273-278 (2007)
Murugappan Ramanathan et al.
American journal of rhinology, 22(2), 115-121 (2008-04-18)
Chronic rhinosinusitis with nasal polyps (CRSwNPs) is a disorder characterized by persistent eosinophilic Th2 inflammation and frequent sinonasal microbial colonization. It has been postulated that an abnormal mucosal immune response underlies disease pathogenesis. The relationship between Th2 inflammatory cytokines and...
S Fardindoost et al.
Nanotechnology, 24(13), 135201-135201 (2013-03-13)
In this paper we present experimental results describing electrical readout of the mechanical vibratory response of graphene-doped fibers by employing electrical actuation. For a fiber resonator with an approximate radius of 850 nm and length of 100 μm, we observed a resonance...
Raju Y Prasad et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(6), 2013-2021 (2013-07-23)
Silver nanoparticles (Ag NP) have been shown to generate reactive oxygen species; however, the association between physicochemical characteristics of nanoparticles and cellular stress responses elicited by exposure has not been elucidated. Here, we examined three key stress-responsive pathways activated by...
Jeongan Choi et al.
ACS applied materials & interfaces, 7(45), 25313-25320 (2015-10-28)
Recently, with the increased attention to indoor air quality, antimicrobial air filtration techniques have been studied widely to inactivate hazardous airborne microorganisms effectively. In this study, we demonstrate herbal extract incorporated (HEI) nanofibers synthesized by an electrospinning technique and their...
Peiyong Qin et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 4167-4175 (2013-02-09)
Poly(phthalazinone-ether-sulfone) (PPES) polymer is a relatively newly developed material with a bis(4-fluorodiphenyl) sulfone group. The formation of the PPES membrane by wet-phase inversion can proceed according to a slow or fast gelation method. These formation mechanisms were studied experimentally. The...
[Gordon's polyvinylpyrrolidone test].
J Aebersold
Helvetica medica acta, 32(3), 227-246 (1965-09-01)
Xiaoqing Hu et al.
Journal of biomedical nanotechnology, 9(6), 976-984 (2013-07-19)
The uniform-sized manganese oxide nanoparticles (the oleic-capped MnO NPs) were synthesized by the thermal decomposition of Mn-oleate complex and were transferred into water with the help of cationic surfactant of cetyltrimethyl ammonium bromide (CTAB), then the poly(vinylpyrrolidone) (PVP) membrane was...
Penny Nymark et al.
Toxicology, 313(1), 38-48 (2012-11-13)
Silver nanoparticles (AgNPs) are widely utilized in various consumer products and medical devices, especially due to their antimicrobial properties. However, several studies have associated these particles with toxic effects, such as inflammation and oxidative stress in vivo and cytotoxic and...
S S Olmez et al.
Die Pharmazie, 68(2), 110-116 (2013-03-09)
In this study, clozapine orally disintegrating tablets (ODTs) were prepared by direct compression method. Disintegration time, resistance to crushing of tablets, porosity, friability, dissolution tests were performed and dissolution profiles of ODTs were investigated. Morphological and interaction studies were also...
G Meru et al.
Genetics and molecular research : GMR, 12(1), 702-709 (2013-04-03)
Genomic tools for watermelon breeding are becoming increasingly available. A high throughput genotyping system would facilitate the use of DNA markers in marker-assisted selection. DNA extraction from leaf material requires prior seed germination and is often time-consuming and cost prohibitive....
Emel Topuz et al.
Environmental pollution (Barking, Essex : 1987), 193, 37-44 (2014-07-08)
This study aims to investigate effects of freshwater components in order to predict agglomeration behavior of silver nanoparticles coated with citrate (AgNP-Cit), polyvinylpyrrolidone (AgNP-PVP), and of TiO2 nanoparticles. Agglomeration studies were conducted in various media based on combinations of ions...
Huan-Xiang Zhou
FEBS letters, 587(5), 394-397 (2013-01-29)
Recently a polymer crowder and two protein crowders were found to have opposite effects on the folding stability of chymotrypsin inhibitor 2 (CI2), suggesting that they interact differently with CI2. Here we propose that all the macromolecular crowders act similarly...
Povidone-iodine solutions in traumatic wound preparation.
M S Oberg
The American journal of emergency medicine, 5(6), 553-555 (1987-11-01)
Doris Bach et al.
Journal of photochemistry and photobiology. B, Biology, 120, 74-81 (2013-03-08)
Photodynamic therapy (PDT) is a local tumour treatment accepted for a number of indications. PDT operates via the cellular stress response through the production of reactive oxygen species and subsequent cellular damage, resulting in cell death. Although PDT-induced signalling and...
Spray deposition of electrospun TiO2 nanorods for dye-sensitized solar cell
Fujihara K, et al.
Nanotechnology, 18(36), 365709-365709 (2007)
Rozhin Penjweini et al.
Journal of photochemistry and photobiology. B, Biology, 120, 120-129 (2013-02-05)
Conventional photodynamic diagnosis (PDD) and therapy (PDT) makes use of photosensitizers that are excited by continuous light irradiation of specific wavelengths. In the case of PDT, the overdose of continuous excitation may lead to an expansion of necrosis in cancer...
Massimiliano di Cagno et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 48(4-5), 775-780 (2013-01-29)
The objective of this study was to investigate if the increase in apparent solubility induced by liposomalization or micellization of the poorly soluble drug hydrocortisone (HC) would lead to an enhancement of its permeability through biological membranes. For this purpose...
W Neil Everett et al.
Toxicology letters, 225(1), 177-184 (2013-12-24)
Zinc oxide (ZnO) nanoparticles (NPs) have been found to readily react with phosphate ions to form zinc phosphate (Zn3(PO4)2) crystallites. Because phosphates are ubiquitous in physiological fluids as well as waste water streams, it is important to examine the potential...
Guilherme L Alexandrino et al.
Analytica chimica acta, 765, 37-44 (2013-02-16)
Thin films loaded with the drug paracetamol were produced from polymer blends formed by hydroxypropylmethylcellulose (HPMC), polyvinylpyrrolidone (PVP) and polyethyleneglycol (PEG), at various mass ratios of polymers and drug defined by a D-optimal experimental design. NIR hyperspectral images were obtained...
Synthesis and Characterization of Zirconium Tungstate Ultra-Thin Fibers.
Zhang L, et al.
Crystal Growth & Design, 9(2), 667-670 (2009)
Liyun Ren et al.
Nanoscale, 5(6), 2337-2345 (2013-02-09)
PLLA fibrous tissue scaffolds with controlled fiber nanoscale surface roughness are fabricated with a novel centrifugal jet spinning process. The centrifugal jet spinning technique is a highly efficient synthesis method for micron- to nano-sized fibers with a production rate up...
Hisham Al-Obaidi et al.
International journal of pharmaceutics, 446(1-2), 100-105 (2013-02-16)
The role of molecular interactions in ball milled solid dispersions in determining the aqueous solubility of the poorly water-soluble drug, griseofulvin (GF) has been examined. Ball milled solid dispersions of GF and hydroxypropylmethylcellulose acetate succinate (HPMCAS) and GF and polyvinylpyrrolidone...