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Showing 1-30 of 5496 results for "733466" within Papers
Niclas Stephanson et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 985, 189-196 (2015-02-18)
A mass spectrometric method for drugs of abuse testing in exhaled breath employing a sampling device collecting aerosol particles was developed and applied in routine use. Analytes covered were amphetamine, methamphetamine, 6-acetylmorphine, morphine, cocaine, benzoylecgonine, diazepam, oxazepam and tetrahydrocannabinol. The
Regina Lohmayer et al.
Analytical chemistry, 87(6), 3388-3395 (2015-02-25)
Molybdenum precipitates preferentially under reducing conditions; therefore, its occurrence in sediment records is used as an indicator of paleoredox conditions. Although thiomolybdates (MoO4-xSx(2-) with x = 1-4) supposedly are necessary intermediates in the process of molybdenum precipitation under anoxic conditions
Natalia Campillo et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 32(12), 2039-2047 (2015-09-29)
Seven strobilurin fungicides were pre-concentrated from soya-based drinks using dispersive liquid-liquid micro-extraction (DLLME) with a prior protein precipitation step in acid medium. The enriched phase was analysed by liquid chromatography (LC) with dual detection, using diode array detection (DAD) and
A Vasanits-Zsigrai et al.
Journal of chromatography. A, 1394, 81-88 (2015-04-05)
Quantification, stability and unique spectroscopic properties of indolinyl-caged glutamates (ICGs), with the o-phthalaldehyde-3-mercaptopropionic acid (OPA-MPA) reagent, were described, at first. As new principle to the field, reactivity and stoichiometry of variously substituted OPA-MPA derivatized ICGs, such as 4-methoxy-7-nitroindolinyl-(MNI-Glu), 4-methoxy-5,7-dinitroindolinyl-(DNI-Glu), 2-dimethylamino-propoxy
Kjell W Schroder et al.
The journal of physical chemistry letters, 6(15), 2888-2891 (2015-08-13)
We investigate the source of Raman background signal commonly misidentified as fluorescence in nonaqueous electrolytes via a variety of spectroscopies (Raman, fluorescence, NMR) and find evidence of hydrogen-bonding interactions. This hydrogen bonding gives rise to broadband anharmonic vibrational modes and
Annamária Fejes-Szabó et al.
Journal of neural transmission (Vienna, Austria : 1996), 121(7), 725-738 (2014-01-05)
The systemic administration of nitroglycerine induces attacks in migraineurs and is able to activate and sensitize the trigeminal system in animals involving glutamate and α7-nicotinic acetylcholine receptors, among others. Kynurenic acid is one of the endogenous glutamate receptor antagonists, and
Yoshimi Yamakami et al.
Bioscience, biotechnology, and biochemistry, 78(12), 2022-2029 (2014-09-10)
Sublethal doses of surfactants as exemplified by NP-40 clearly induce premature senescence in normal human cells. To understand molecular basis for this phenomenon, we tried to suppress it with use of various inhibitors. An inhibitor of p38 of the MAPK
Rong-Jie Zeng et al.
Biomedical chromatography : BMC, 29(3), 459-464 (2014-07-30)
Boldine is a potential anti-inflammatory agent found in several different plants. Published bioanalytical methods using HPLC with ultraviolet and fluorescent detection lacked enough sensitivity and required tedious sample preparation procedures. Herein, we describe the development of a novel ultra-high performance
Sayaka Shimada et al.
International journal of clinical pharmacology and therapeutics, 53(5), 398-407 (2015-03-06)
This study aimed to evaluate influence of ethnic factors on the pharmacokinetics of orally inhaled QMF149, a novel combination of an approved longacting β2-agonist, indacaterol (Onbrez® Breezhaler® for COPD), and an approved inhaled corticosteroid, mometasone furoate (MF), (Asmanex® Twisthaler® for
Eshwar Jagerdeo et al.
Journal of analytical toxicology, 39(2), 83-88 (2014-11-30)
The abuse of gamma-hydroxybutyric acid (GHB) and its suspicion in cases of suspected drug-facilitated sexual assault is of keen interest to forensic toxicology laboratories. This paper reports an extraction, separation and detection procedure for GHB in hair utilizing a combination
Ajoy Saha et al.
Journal of food science and technology, 52(7), 4001-4014 (2015-07-04)
This paper reports a simple and rapid method for simultaneous determination of the residues of selected herbicides viz. pendimethalin, oxyfluorfen, imazethapyr and quizalofop-p-ethyl in peanut by liquid chromatography-tandem mass spectrometry (LC-MS/MS). A modified approach of the QuEChERS methodology was used
Wooram Lee et al.
Analytical chemistry, 86(13), 6379-6386 (2014-05-27)
Quantitative proteomic experiments with mass spectrometry detection are typically conducted by using stable isotope labeling and label-free quantitation approaches. Proteins with housekeeping functions and stable expression level such actin, tubulin, and glyceraldehyde-3-phosphate dehydrogenase are frequently used as endogenous controls. Recent
Juan José Baeza-Baeza et al.
Journal of separation science, 37(17), 2269-2277 (2014-06-20)
The so-called "fundamental equation for gradient elution" has been used for modeling the retention in gradient elution. In this approach, the instantaneous retention factor (k) is expressed as a function of the change in the modifier content (φ(ts )), ts
Christopher J Konop et al.
Journal of the American Society for Mass Spectrometry, 26(12), 2009-2023 (2015-07-16)
Neuromodulators have become an increasingly important component of functional circuits, dramatically changing the properties of both neurons and synapses to affect behavior. To explore the role of neuropeptides in Ascaris suum behavior, we devised an improved method for cleanly dissecting
Fenxia Zhu et al.
Journal of chromatographic science, 52(8), 862-871 (2013-08-31)
An ultra performance liquid chromatography coupled with photodiode array detector and time-of-flight tandem mass spectrometry (UPLC-PDA-TOF-MS) method was developed for the quality assessment of Danmu preparations, a commonly used traditional Chinese medicine. Thirty-three compounds from Danmu preparations were simultaneously detected;
Hiroto Maeda et al.
The Journal of veterinary medical science, 77(8), 937-943 (2015-03-31)
Feline renal diseases are increasingly noted in veterinary practice. It is important to diagnose and identify the pathological basis of renal dysfunction accurately at an early stage, but there are only a few reports on this area in clinical veterinary
David Falck et al.
Journal of proteome research, 14(9), 4019-4028 (2015-08-06)
It has been reported that glycosylation can influence the proteolytic cleavage of proteins. A thorough investigation of this phenomenon was conducted for the serine protease trypsin, which is essential in many proteomics workflows. Monoclonal and polyclonal immunoglobulin G biopharmaceuticals were
Adriana S A Pereira et al.
Parasitology research, 114(3), 1145-1152 (2015-01-13)
Schistosoma mansoni is one of the most common parasites infecting humans. They are well adapted to the host, and this parasite's longevity is a consequence of effective escape from the host immune system. In the blood circulation, lipoproteins not only
Maria Sol Degese et al.
The Biochemical journal, 467(1), 77-90 (2015-01-15)
Mitogen-activated protein kinase (MAPK) pathways constitute key regulatory elements linking extracellular stimuli to nuclear gene expression. Immediate-early responsive genes (IEGs) of the activator protein 1 (AP-1) family, such as fos, achieve peak expression levels shortly after cells are stimulated with
Yusuke Matsumura et al.
PloS one, 9(11), e112180-e112180 (2014-11-07)
Numerous clinical studies have reported that ingestion of chocolate reduces the risk of metabolic syndrome. However, the mechanisms by which this occurs remain unclear. In this murine study, the metabolic-enhancing activity of a 10 mg/kg mixture of flavan-3-ol fraction derived
Gerardo Leyva-Gómez et al.
Journal of pharmaceutical sciences, 103(8), 2509-2519 (2014-06-12)
To document the efficacy of clonazepam (CLZ) either free as a solution or loaded in solid lipid nanoparticles (CLZ-SLN) or mixed micelles (CLZ-MM), the in vitro blood-brain barrier permeability of the formulations was determined. Behavior and/or electroencephalograms (EEGs) of rodents
Suramya Waidyanatha et al.
Xenobiotica; the fate of foreign compounds in biological systems, 45(9), 811-819 (2015-04-30)
1. Bisphenol AF (BPAF) is used as a crosslinking agent for polymers and is being considered as a replacement for bisphenol A (BPA). 2. In this study, comparative clearance and metabolism of BPAF and BPA in hepatocytes and the disposition and metabolism
Yan Yan et al.
Journal of pharmaceutical and biomedical analysis, 95, 76-84 (2014-03-19)
A liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method was developed and validated for simultaneous determination of seven constituents including puerarin, daidzin, daidzein, paeoniflorin, albiflorin, liquiritin and liquiritigenin in rat plasma using schisandrin as the internal standard (IS). The plasma samples
Marta Pastor-Belda et al.
Journal of chromatography. A, 1394, 1-8 (2015-04-07)
A sensitive method for the determination of five new generation pesticides (chlorantraniliprole, spirotetramat, spiromesifen, spirodiclofen and flubendiamide) in soil samples has been developed using liquid chromatography and tandem mass spectrometry (LC-MS(2)) with a triple-quadrupole in the multiple reaction monitoring mode.
I Zabaleta et al.
Journal of chromatography. A, 1387, 13-23 (2015-02-25)
An analytical method for the simultaneous determination in fish liver and muscle tissue and mussel samples of 14 perfluorinated compounds (PFCs), including three perfluoroalkylsulfonates (PFSAs), seven perfluorocarboxylic acids (PFCAs), three perfluorophosphonic acids (PFPAs) and perfluorooctanesulfonamide (PFOSA), and 10 potential precursors
Square Wave Voltammetric Determination of Diclofenac in Pharmaceutical Preparations and Human Serum.
Ulvihan Ciltas et al.
Iranian journal of pharmaceutical research : IJPR, 14(3), 715-722 (2015-09-04)
In this study, a simple and reliable square wave voltammetric (SWV) method was developed and validated for determination of diclofenac in pharmaceutical preparations and human serum. The proposed method was based on electrooxidation of diclofenac at platinum electrode in 0.1
Margherita Di Pisa et al.
Journal of medicinal chemistry, 58(3), 1390-1399 (2015-01-15)
Celiac disease (CD) patients usually present high levels of circulating IgA antibodies directed to different antigens, in particular tissue transglutaminase (tTG), gliadin (Glia), and endomysium. A series of synthetic peptide constructs containing cross-linked tTG and Glia deamidated peptides have been
N Bostanci et al.
Molecular oral microbiology, 30(4), 323-335 (2015-03-20)
Periodontitis is the chronic inflammatory destruction of periodontal tissues as a result of bacterial biofilm formation on the tooth surface. Proteins secreted by the gingival epithelium challenged by subgingival biofilms represent an important initial response for periodontal inflammation. The aim
Joanne L Porter et al.
ACS chemical biology, 10(2), 611-621 (2014-11-25)
The ease with which enzymes can be adapted from their native roles and engineered to function specifically for industrial or commercial applications is crucial to enabling enzyme technology to advance beyond its current state. Directed evolution is a powerful tool
Kejia Zhang et al.
BioMed research international, 2015, 169215-169215 (2015-09-09)
Sulfa antibiotics are a family of typical broad-spectrum antibiotics, which have become one of the most frequently detected antibiotics in water, posing a great threat to human health and ecosystem. Potassium ferrate is a new type of high-efficiency multifunctional water
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