Showing 1-30 of 54 results for "47614"
Simone Lerch et al.
Nanomedicine : nanotechnology, biology, and medicine, 11(6), 1585-1596 (2015-05-10)
Many nanoparticular drug delivery approaches rely on a detailed knowledge of the acidification process during intracellular trafficking of endocytosed nanoparticles (NPs). Therefore we produced a nanoparticular pH sensor composed of the fluorescent pH-sensitive dual wavelength dye carboxy seminaphthorhodafluor-1 (carboxy SNARF-1)...
Roberta De Tullio et al.
Biochimica et biophysica acta, 1843(11), 2583-2591 (2014-07-16)
Here we demonstrate that the presence of the L-domain in calpastatins induces biphasic interaction with calpain. Competition experiments revealed that the L-domain is involved in positioning the first inhibitory unit in close and correct proximity to the calpain active site...
A Privalova et al.
Journal of biomedical materials research. Part A, 103(3), 939-948 (2014-05-17)
Microcarriers have been proposed in tissue engineering, namely for bone, cartilage, skin, vascular, and central nervous system. Although polyester-based microcarriers have been already used for this purpose, their surface properties should be improved to provide better cell growth. The goal...
Min Jia et al.
Analytical chemistry, 81(19), 8033-8040 (2009-10-01)
Fluorescamine derivatized 3-amino-2,2,5,5,-tetramethyl-1-pyrrolidinyloxy (I) is shown to undergo an irreversible reaction with peroxyl radicals and other radical oxidants to generate a more highly fluorescent diamagnetic product (II) and thus can be used as a highly sensitive and versatile probe to...
Ryan J Wade et al.
Nature communications, 6, 6639-6639 (2015-03-24)
Electrospun nanofibres are promising in biomedical applications to replicate features of the natural extracellular matrix (ECM). However, nearly all electrospun scaffolds are either non-degradable or degrade hydrolytically, whereas natural ECM degrades proteolytically, often through matrix metalloproteinases. Here we synthesize reactive...
Amit K Jha et al.
Biomaterials, 32(10), 2466-2478 (2011-01-11)
We have created hyaluronic acid (HA)-based, cell-adhesive hydrogels that direct the initial attachment and the subsequent differentiation of human mesenchymal stem cells (MSCs) into pre-osteoblasts without osteogenic supplements. HA-based hydrogel particles (HGPs) with an average diameter of 5-6 μm containing...
Ohm D Krishna et al.
Biomaterials, 32(27), 6412-6424 (2011-06-11)
In this study, we evaluated the competence of a rationally designed collagen-like peptide (CLP-Cys) sequence - containing the minimal essential Glycine-Glutamic acid-Arginine (GER) triplet but lacking the hydroxyproline residue - for supporting human mesenchymal stem cell (hMSC) adhesion, spreading and...
Zeynep Aydoğmuş
Journal of fluorescence, 19(4), 673-679 (2009-02-03)
A new, simple and sensitive spectrofluorimetric method has been developed for the determination of oseltamivir phosphate (OSP) in capsules. The method is based on the reaction between oseltamivir and fluorescamine in borate buffer solution of pH 8.50 to give highly...
Verónica S Mary et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 75, 104-111 (2014-12-03)
Aflatoxin B1 (AFB1) and fumonisin B1 (FB1) are mycotoxins widely found as cereal contaminants and their co-occurrence in corn has been associated with a high incidence of liver cancer. Both toxins are immunotoxic, with AFB1 being a procarcinogen, and its...
Sonja Kaisarevic et al.
Environmental toxicology and pharmacology, 39(1), 358-368 (2015-01-03)
Rat hepatoma cells H4IIE were treated by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and polycyclic aromatic hydrocarbons (PAHs) (dibenz(a,h)anthracene, benzo(a)pyrene, benz(a)anthracene, chrysene), low-concentration mixtures of PAHs and TCDD, and environmental mixtures contaminated by PAHs and their derivatives. Expression of the gene battery comprising cytochrome...
Zeynep Aydoğmuş
Luminescence : the journal of biological and chemical luminescence, 27(6), 489-494 (2012-02-01)
A new, simple and sensitive spectrofluorimetric method has been developed for the determination of aliskiren (ALS) in dosage forms and human urine. The method is based on the reaction between ALS and fluorescamine in borate buffer solution, pH 9, to...
Grégoire Danger et al.
Electrophoresis, 29(19), 4036-4044 (2008-10-30)
The first results of chiral separations with the gradient elution isotachophoresis method are presented. As previously described, citrate is used in the run buffer as the leading ion and borate in the sample buffer as the terminating ion. Modulation of...
Li Yuan et al.
Materials science & engineering. C, Materials for biological applications, 56, 401-408 (2015-08-08)
A novel magnetic nanocomposite (MNPs@DNA) was synthesized by bonding double strand DNA (ds-DNA) onto Fe3O4 magnetic nanoparticles (MNPs) directly. MNPs@DNA was characterized by cyclic voltammetry (CV), differential pulse voltammetry (DPV), Fourier transform infrared spectroscopy (FT-IR) and thermo-gravimetric analysis (TGA), which...
Wen-Hsien Tsai et al.
Journal of chromatography. A, 1217(49), 7812-7815 (2010-11-04)
A simple sugaring-out assisted liquid-liquid extraction method combined with high-performance liquid-chromatography with fluorescence detection (HPLC-FL) was developed for the extraction and determination of sulfonamides in honey. Sample preparation consisted of acid hydrolysis to release sugar-bound sulfonamides. After derivatization with fluorescamine...
Mona Connolly et al.
Chemico-biological interactions, 228, 57-68 (2015-01-27)
The generation of reactive oxygen species (ROS) and consequent oxidative stress is regarded as a relevant mechanism for nanoparticle toxicity. In cells, the activation of the aryl hydrocarbon receptor (AhR) triggers a cascade of defence responses against oxidative stress. By...
Manjeet Deshmukh et al.
Biomaterials, 31(26), 6675-6684 (2010-06-22)
Two vinyl sulfone functionalized crosslinkers were developed for the purpose of preparing degradable poly(ethylene glycol) (PEG) hydrogels (EMXL and GABA-EMXL hydrogels). A self-elimination degradation mechanism in which an N-terminal residue of a glutamine is converted to pyroglutamic acid with subsequent...
K P Goetsch et al.
Acta biomaterialia, 24, 44-52 (2015-06-17)
Regulation of the rate of cell ingrowth into and within a matrix is desirable for efficient tissue regeneration. Polyethylene glycol hydrogels crosslinked with matrix metalloproteinase (MMP) susceptible peptide sequences permit cell-controlled invasion. In this study, hydrogels of the same stiffness...
Julia A Fruetel et al.
Methods in molecular biology (Clifton, N.J.), 919, 165-177 (2012-09-15)
Protein profiling is an increasingly valuable tool for the characterization of protein populations and has been used to identify microorganisms, most often using two-dimensional gel electrophoresis followed by mass spectrometry. We present a rapid method for the identification of viruses...
Laura Contreras-Ruiz et al.
Cornea, 29(5), 550-558 (2010-03-26)
Hyaluronic acid-chitosan nanoparticles (HA-CS NPs) have the potential to serve as a reliable drug delivery system to topically treat ocular surface disorders. We evaluated the in vivo uptake by ocular structures, the acute tolerance, and possible alterations of tear film...
José Bernal et al.
Journal of chromatography. A, 1216(43), 7275-7280 (2009-06-10)
A novel method for the simultaneous analysis at trace level of sulfonamides (sulfaguanidine, sulfanilamide, sulfacetamide, sulfathiazole, sulfapyridine, sulfachloropyridazine, sulfamerazine, sulfameter, sulfamethazine, sulfadoxine, sulfadiazine, sulfamonomethoxine, sulfadimethoxine) in honey is described. Methanol has been used in the sample treatment step to avoid...
Determination of sulfonamides in livers using matrix solid-phase dispersion extraction high-performance liquid chromatography.
Zhang Y, Xu X, Qi X, Gao W, et al.
Journal of Separation Science, 23, 45-52 (2012)
M I Walash et al.
Luminescence : the journal of biological and chemical luminescence, 26(5), 342-348 (2010-08-26)
A new, simple and sensitive spectrofluorimetric method has been developed for the determination of pregabalin (PG) in capsules. The method is based on the reaction between pregabalin and fluorescamine in borate buffer solution of pH 10 to give a highly...
Nengyi Zhang et al.
Plant physiology, 168(2), 575-583 (2015-04-29)
Carbon (C) and nitrogen (N) metabolism are critical to plant growth and development and are at the basis of crop yield and adaptation. We performed high-throughput metabolite analyses on over 12,000 samples from the nested association mapping population to identify...
Hiroyuki Kikuchi et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 53(2), 121-127 (2012-06-13)
A method for the quantification of histamine in fish and fish products using tandem solid-phase extraction and fluorescence derivatization with fluorescamine was previously developed. In this study, we improved this analytical method to develop an official test method for quantification...
The Forms, Distribution, and Risk Assessment of Sulfonamide Antibiotics in the Manure-Soil-Vegetable System of Feedlot Livestock.
Jin, et al.
Bulletin of Environmental Contamination and Toxicology, 105, 790-797 (2020)
Yusuke Suzuki et al.
Journal of agricultural and food chemistry, 56(22), 10811-10816 (2008-11-06)
Photoinduced decarboxylation via homolytic cleavage of the ester linkage generating two benzyl radicals being recoupled is known to be a major photolytic pathway of the insecticide fenvalerate in aqueous or organic solvents. A highly sensitive and selective fluorescence spectroscopic method...
Neeraj Dhaunta et al.
Analytical biochemistry, 408(2), 263-268 (2010-09-21)
We present a single-step procedure for the specific mass labeling of unblocked protein N termini. We show that the dye fluorescamine, which is commonly assumed to require mildly alkaline conditions for undergoing a nonspecific reaction with α- and ε-amino groups...
Jin-Ho Kim et al.
Molecular pharmaceutics, 12(4), 1230-1241 (2015-02-17)
Water-insoluble anticancer drugs, including paclitaxel, present severe clinical side effects when administered to patients, primarily associated with the toxicity of reagents used to solubilize the drugs. In efforts to develop alternative formulations of water-insoluble anticancer drugs suitable for intravenous administration...
Ryan L Fimmen et al.
Journal of environmental sciences (China), 20(10), 1273-1280 (2009-01-16)
The objective of this study was to improve primary-amine nitrogen (1 degree-N) quantification in dissolved organic matter (DOM) originating from natural waters where inorganic forms of N, which may cause analytical interference, are commonly encountered. Efforts were targeted at elucidating...
José Pedro Castro et al.
Redox biology, 21, 101108-101108 (2019-01-21)
Aging is accompanied by the accumulation of oxidized proteins. To remove them, cells employ the proteasomal and autophagy-lysosomal systems; however, if the clearance rate is inferior to its formation, protein aggregates form as a hallmark of proteostasis loss. In cells...

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