Search Within
Filtros aplicados
Exibindo 1-30 of 5437 resultados for "


" no prazo de Papéis
Tingting Zhang et al.
Analytical and bioanalytical chemistry, 407(21), 6543-6555 (2015-06-24)
This article describes the development of a lipidomic platform consisting of a 4000 QTRAP mass spectrometer and a self-installed sample inlet system to indentify and quantify 12 phospholipid and five sphingolipid classes from lipid-rich brain tissues of mouse, duck, and
Katarina Rubin et al.
Drug metabolism and disposition: the biological fate of chemicals, 43(1), 119-125 (2014-11-06)
The suppression of hepatic cytochrome P450 (P450) expression during inflammatory and infectious diseases and the relief of this suppression by successful disease treatment have been previously demonstrated to impact drug disposition. To address this clinically relevant phenomenon preclinically, the effect
Qun Tao Liang et al.
Glycobiology, 25(7), 714-725 (2015-02-14)
The rare N-unsubstituted glucosamine (GlcNH(3)(+)) residues in heparan sulfate (HS) have important biological and pathophysiological roles. Because of their low natural abundance, the use of chemically generated, structurally defined, N-unsubstituted heparin/HS oligosaccharides can greatly contribute to the investigation of their
Mahdi Moridi Farimani et al.
Phytochemistry, 108, 264-269 (2014-09-23)
Three labdane diterpenoids, 14α-hydroxy-15-chlorosclareol (1), 14α-hydroxy-15-acetoxysclareol (2), and 6β-hydroxy-14α-epoxysclareol (3), together with the known diterpenoids sclareol (4), 6β-hydroxysclareol (5), and 14α-epoxysclareol (6), as well as other common plant constituents were isolated from the n-hexane extract of aerial parts of Salvia
Xiaoxia Zhu et al.
Journal of ethnopharmacology, 160, 86-93 (2014-12-02)
Danzhi Xiaoyao San (DXS) is a canonical Chinese medicine formula from Principles of Internal Medicine, which was written during the Ming dynasty. This formula is approved and commercialized for use in the prevention and treatment of affective disorders. This study
Adrianne M Rosales et al.
Biomacromolecules, 16(3), 798-806 (2015-01-30)
The elastic modulus of the extracellular matrix is a dynamic property that changes during various biological processes, such as disease progression or wound healing. Most cell culture platforms, however, have traditionally exhibited static properties, making it necessary to replate cells
Ricard Brossa et al.
Planta, 241(4), 803-822 (2014-12-17)
The interaction between enzymatic and non-enzymatic antioxidants, endogenous levels of ABA and ABA-GE, the rapid recuperation of photosynthetic proteins under re-watering as well the high level of antioxidant proteins in previously drought-stressed plants under re-watering conditions, will contribute to drought
Karolina Gromadzka et al.
Arhiv za higijenu rada i toksikologiju, 66(2), 159-164 (2015-06-26)
Zearalenone (ZEA) is a mycotoxin produced by some Fusarium species in food and feed. The toxicity of ZEA and its metabolites is related to the chemical structure of the mycotoxin, which is similar to naturally occurring oestrogens. Currently, there is
Lea Ann Dailey et al.
Nanotoxicology, 9(1), 106-115 (2014-03-14)
Inhaled nanomaterials present a challenge to traditional methods and understanding of respiratory toxicology. In this study, a non-targeted metabolomics approach was used to investigate relationships between nanoparticle hydrophobicity, inflammatory outcomes and the metabolic fingerprint in bronchoalveolar fluid. Measures of acute
Kangmin Chon et al.
Bioresource technology, 190, 499-507 (2015-03-24)
This study investigated the removal efficiency and mechanisms of water contaminants (mainly N-nitrosamines) during municipal wastewater reclamation by a membrane bioreactor (MBR) and nanofiltration (NF) hybrid system. The removal of bulk water contaminants was governed by the microbial activities in
Chien-Ming Chen et al.
Journal of pharmaceutical and biomedical analysis, 116, 150-155 (2015-08-13)
In this study, we aimed to develop a new enzymatic assay system of d-lactate with good precision, accuracy, and sensitivity for the determination of D-lactate concentrations in rat serum. D-Lactate dehydrogenase (D-LDH) was utilized to catalyze D-lactate and NAD(+) to
Żaneta Rembisz et al.
Journal of chromatography. A, 1407, 184-192 (2015-07-15)
A high-performance liquid chromatography method based on pre-column derivatization with the pyrylium salts (4-[p-(N,N-dimethylamino)phenyl]-2,6-diphenylpyrylium perchlorate (LN1) and 2,4,6-triphenylpyrylium tetrafluoroborate (L1)) has been developed for the determination of sulfide. After the reaction of sulfide ions with LN1 or L1 aiming at
Laura E Herring et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 988, 166-174 (2015-03-18)
Phosphorylation is an important post-translational modification that is involved in regulating many signaling pathways. Of particular interest are the growth factor mediated Ras and phosphoinositide 3-kinase (PI3K) signaling pathways which, if misregulated, can contribute to the progression of cancer. Phosphoproteomic
Eugenia Mato et al.
Molecular and cellular endocrinology, 404, 37-45 (2015-01-27)
We investigated the role of VDAC2 in human epithelial thyroid tumours using proteomic 2D-DIGE analysis and qRT-PCR. We found a significant up-regulation of VDAC2 in thyroid tumours and in thyroid tumour cell lines (TPC-1 and CAL-62). We did not detect
K Dadakova et al.
Journal of proteomics, 119, 143-153 (2015-02-18)
Gray mold caused by Botrytis cinerea is one of the most important diseases of grapevine resulting in significant reductions in yield and fruit quality. In order to examine the molecular mechanisms that characterize the interaction between B. cinerea and the
Ying Zhou et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 976-977, 78-83 (2014-12-09)
A robust and validated method based on ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC-MS/MS) has been developed for the simultaneous determination of remimazolam, which is a new chemical entity, and its major carboxylic acid metabolite (M1) in human
Yogesh T Patel et al.
Cancer chemotherapy and pharmacology, 75(5), 897-906 (2015-03-01)
Clofarabine, a deoxyadenosine analog, was an active anticancer drug in our in vitro high-throughput screening against mouse ependymoma neurospheres. To characterize the clofarabine disposition in mice for further preclinical efficacy studies, we evaluated the plasma and central nervous system disposition
Jannet Kamoun et al.
Biochimica et biophysica acta, 1851(2), 129-140 (2014-12-03)
Yarrowia lipolytica is a lipolytic yeast possessing 16 paralog genes coding for lipases. Little information on these lipases has been obtained and only the major secreted lipase, namely YLLIP2, had been biochemically and structurally characterized. Another secreted lipase, YLLIP8, was
G Astrid Garzón et al.
Journal of agricultural and food chemistry, 63(6), 1803-1811 (2015-02-11)
The contents and profile of polyphenols were analyzed in edible petals of nasturtium flowers (Tropaeolum majus) of three colors, and their oxygen radical absorbance capacities (ORAC) were compared. Three primary anthocyanins (ACNs) and 15 non-ACN phenolic compounds including hydroxycinammic acids
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
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
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
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
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
Ayorinde Adehin et al.
Drug metabolism and personalized therapy, 30(3), 203-210 (2015-06-23)
CYP1A2 and CYP2A6 are polymorphic enzymes that metabolise several compounds of clinical importance. This study investigated the prevalent phenotypes of these enzymes and the influence of age and sex on enzyme activity in a Nigerian population. Caffeine (110 mg) was
M Lloberas et al.
New Zealand veterinary journal, 63(4), 227-234 (2015-02-18)
To compare the pharmacokinetics, distribution and efficacy (pharmacodynamic response) of intraruminal ivermectin (IVM) and moxidectin (MXD) administered at 0.2 and 0.4 mg/kg to naturally nematode-infected lambs, and to determine the ex vivo accumulation of these anthelmintics by Haemonchus contortus. Romney
Página 1 de 182
Página 1 de 182