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Tao Chen et al.
SpringerPlus, 4, 652-652 (2015-11-07)
Hetrombopag as the derivative of ethylidene hydrazine carboxamide was recently developed into a novel patented non-peptide thrombopoietin mimetic and thrombopoietin receptor agonist to treat idiopathic thrombocytopenic purpura. To study the pharmacokinetics of hetrombopag, a highly sensitive, rapid and reliable liquid...
Hye-In Woo et al.
CNS neuroscience & therapeutics, 21(5), 417-424 (2015-01-23)
Amino acids are important body metabolites and seem to be helpful for understanding pathogenesis and predicting therapeutic response in major depressive disorder (MDD). We performed amino acid profiling to discover potential biomarkers in major depressive patients treated with selective serotonin...
Liyun Ma et al.
Journal of chromatography. A, 1376, 64-73 (2014-12-22)
Cucurbit[7]uril (CB7), one host macromolecule, possesses a hydrophobic inner cavity and two identical hydrophilic carbonyl fringe portals, thus interacting with a variety of guest molecules through hydrophobic, hydrogen bonding and ion-dipole interactions. These characteristics make CB7 a good candidate as...
Lydia Beyer et al.
Journal of bacteriology, 195(7), 1428-1435 (2013-01-22)
Enterobacteria such as Escherichia coli generate formate, lactate, acetate, and succinate as major acidic fermentation products. Accumulation of these products in the cytoplasm would lead to uncoupling of the membrane potential, and therefore they must be either metabolized rapidly or...
C Gröer et al.
Journal of pharmaceutical and biomedical analysis, 100, 393-401 (2014-09-15)
Cytochrome P450 (CYP) enzymes and UDP-glucuronosyltransferases (UGT) are major determinants in the pharmacokinetics of most drugs on the market. To investigate their impact on intestinal and hepatic drug metabolism, we developed and validated quantification methods for nine CYP (CYP1A2, CYP2B6...
Serena Giuliano et al.
PloS one, 9(12), e110073-e110073 (2014-12-04)
Nasu-Hakola disease (NHD) is a recessively inherited rare disorder characterized by a combination of neuropsychiatric and bone symptoms which, while being unique to this disease, do not provide a rationale for the unambiguous identification of patients. These individuals, in fact...
Microbiology. An enzymatic route to H2 storage.
Inês A C Pereira
Science (New York, N.Y.), 342(6164), 1329-1330 (2013-12-18)
Anirban Ghosh et al.
PloS one, 9(10), e110443-e110443 (2014-10-21)
Recent studies indicate that extracellular vesicles are an important source material for many clinical applications, including minimally-invasive disease diagnosis. However, challenges for rapid and simple extracellular vesicle collection have hindered their application. We have developed and validated a novel class...
Maria-Theresia Gekenidis et al.
Applied and environmental microbiology, 80(14), 4234-4241 (2014-05-06)
A well-accepted method for identification of microorganisms uses matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) coupled to analysis software which identifies and classifies the organism according to its ribosomal protein spectral profile. The method, called MALDI biotyping...
Yu Fen Zheng et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 68, 117-127 (2014-03-19)
We evaluated the potential of BST204, a purified dry extract of ginseng, to inhibit or induce human liver cytochrome P450 enzymes (CYPs) and UDP-glucuronosyltransferases (UGTs) in vitro to assess its safety. In vitro drug interactions of four bioactive ginsenosides of...
Wenkui Li et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 983-984, 117-124 (2015-02-04)
A high-performance liquid chromatography-tandem mass spectrometric (LC-MS/MS) method has been developed and validated for the quantitative analysis of loratadine, an H1 histamine antagonist, in human dried blood spot (DBS) samples following a single self-administered 10 or 20mg oral dose. The...
Vera Hillewaert et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 981-982, 40-47 (2015-01-21)
Tapentadol is a novel, centrally acting analgesic with 2 mechanisms of action, MOR agonism and noradrenaline (NA) reuptake inhibition in a single molecule. It is the first member of a new therapeutic class, MOR-NRI. A high throughput liquid chromatography-tandem mass...
Theresa A Isbell et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 980, 65-71 (2015-01-16)
The determination of morphine and its isobaric metabolites morphine-3-beta-d-glucuronide (M3G) and morphine-6-beta-d-glucuronide (M6G) is useful for therapeutic drug monitoring and forensic identification of drug use. In particular, capillary electrophoresis with mass spectrometry (CE-MS) represents an attractive tool for opioid analysis....
ShuLing Wang et al.
Analytica chimica acta, 900, 67-75 (2015-11-18)
In this paper, polypyrrole/graphene (PPy/G) composite coating was prepared by a facile electrochemical polymerization strategy on the inner surface of a stainless steel (SS) tube. Based on the coating tube, a novel online in-tube solid-phase microextraction -high performance liquid chromatography...
Anita Aranyi et al.
Journal of chromatography. A, 1387, 123-133 (2015-02-18)
The direct separation of the enantiomers of 1-(α-aminoarylmethyl)-2-naphthol, 1-(α-aminoalkyl)-2-naphthol, 2-(α-aminoarylmethyl)-1-naphthol analogues and 2-(1-amino-2-methylpropyl)-1-naphthol) was investigated in supercritical fluid chromatography. Five commercially available chiral stationary phases based on immobilized polysaccharide chiral selectors (Chiralpak IA, IB, IC, ID and IE) were evaluated....
Lolo Wal Marzan et al.
Archives of microbiology, 195(3), 161-171 (2013-01-01)
Effect of acidic condition on the fermentation characteristics was investigated by the continuous culture of Escherichia coli. In accordance with down-regulation of crp gene transcript level as well as up-regulation of arcA, the expressions of the TCA cycle genes were...
Ludmila Müllerová et al.
Journal of chromatography. A, 1384, 147-154 (2015-02-11)
Interactions among analyte forms that undergo simultaneous dissociation/protonation and complexation with multiple selectors take the shape of a highly interconnected multi-equilibrium scheme. This makes it difficult to express the effective mobility of the analyte in these systems, which are often...
Shunli Ji et al.
The Analyst, 139(21), 5594-5599 (2014-09-03)
A facile method to prepare a polar stationary phase for hydrophilic interaction chromatography (HILIC) was proposed by coating polyvinyl alcohol onto silica particles (PVA-Sil). A water or organic solvent-insoluble permanent PVA coating on the silica particle surface can be formed...
Yoann Rombouts et al.
Annals of the rheumatic diseases, 74(1), 234-241 (2013-10-10)
To determine whether anticitrullinated protein antibodies (ACPA) exhibit specific changes in Fc glycosylation prior to the onset of arthritis. Serum samples of patients with ACPA-positive arthralgia (n=183) were collected at baseline and at various time points of follow-up. 105 patients...
Nguyen Minh Duc et al.
Journal of the American Society for Mass Spectrometry, 26(5), 808-817 (2015-03-06)
G protein-coupled receptors (GPCRs) have important roles in physiology and pathology, and 40% of drugs currently on the market target GPCRs for the treatment of various diseases. Because of their therapeutic importance, the structural mechanism of GPCR signaling is of...
Nina C Hubner et al.
Journal of proteome research, 14(2), 1315-1329 (2014-12-30)
Interactions between transcription factors and genomic DNA, and in particular their impact on disease and cell fate, have been extensively studied on a global level using techniques based on next-generation sequencing. These approaches, however, do not allow an unbiased study...
John Suberu et al.
Journal of pharmaceutical and biomedical analysis, 117, 522-531 (2015-10-18)
An improved liquid chromatography-tandem mass spectrometry (LC-MS/MS) protocol for rapid analysis of co-metabolites of A. annua in raw extracts was developed and extensively characterized. The new method was used to analyse metabolic profiles of 13 varieties of A. annua from...
Xiaohui Xu et al.
Carbohydrate research, 407, 26-33 (2015-02-24)
Low molecular weight heparins (LMWHs) are linear and highly charged carbohydrate polymers prepared by chemical or enzymatic depolymerization of heparin. Compared to unfractionated heparin (UFH), LMWHs are prevalently used as clinical anticoagulant drugs due to their lower side effects and...
Chloe Townley et al.
European journal of mass spectrometry (Chichester, England), 21(3), 433-442 (2015-08-27)
A new and more reliable method is reported for distinguishing the equatorial and axial epimers of oleanolic and ursolic acids and related triterpenoids based primarily on the relative abundance of the [M+H](+) and [M+-H(2)O](+) signals in their positive mode atmospheric...
Fei Ye et al.
PloS one, 10(11), e0142082-e0142082 (2015-11-07)
Chronic hepatitis C virus (HCV) infection is one of the leading causes of severe hepatitis. The molecular mechanisms underlying HCV replication and pathogenesis remain unclear. The development of the subgenome replicon model system significantly enhanced study of HCV. However, the...
Khushwant S Bhullar et al.
Food chemistry, 168, 595-605 (2014-08-31)
Partridgeberry (Vaccinium vitis-idaea) is a polyphenol-rich berry of the Ericaceous family, grown in Newfoundland and Labrador province of Canada. The aims of this study were to identify extraction solvents for the maximum recovery of polyphenols, to establish fractionation technique for...
S Arenas-Lopez et al.
British journal of anaesthesia, 113(6), 964-969 (2014-08-01)
Clonidine is a useful analgesic-sedative agent; however, few data exist regarding its use in infants after congenital heart disease surgery. We thus aimed to assess the absorption and safety of enterally administered clonidine in this setting. Sixteen infants (median age...
John O Suberu et al.
ChemMedChem, 9(12), 2791-2797 (2014-09-12)
In parts of Africa and Asia, self-medication with a hot water infusion of Artemisia annua (Artemisia tea) is a common practice for a number of ailments including malaria and cancer. In our earlier work, such an extract showed better potency...
J R Bales et al.
Clinical chemistry, 30(3), 426-432 (1984-03-01)
Numerous low-Mr metabolites--including creatinine, citrate, hippurate, glucose, ketone bodies, and various amino acids--have been identified in 400- and 500-MHz proton nuclear magnetic resonance (1H NMR) spectra of intact human urine. The presence of many of these was related to the...
Hikaru Nagasawa et al.
Rinsho shinkeigaku = Clinical neurology, 45(7), 527-530 (2005-08-27)
We report a 24-year-old man with severe methanol intoxication, who showed cerebral and optic nerve damages on MRI. He was admitted to our hospital with an acute onset of unconsciousness and severe metabolic acidosis, and was immediately treated by hemodialysis....
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