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a2706

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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
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
Yunus Emre Unsal et al.
Journal of AOAC International, 97(4), 1034-1038 (2014-08-26)
Total concentration of metal ions at trace levels does not give sufficient information about toxicity and biological availability of these elements in fertilizer samples. In the presented work, a sequential extraction procedure modified by the European Community Bureau of Reference
Yuwei Tian et al.
Analytical chemistry, 87(22), 11509-11515 (2015-10-17)
Monoclonal antibodies (mAbs) are among the fastest growing class of therapeutics due to their high specificity and low incidence of side effects. Unlike most drugs, mAbs are complex macromolecules (∼150 kDa), leading to a host of quality control and characterization
Iva Kulic et al.
The Journal of experimental medicine, 212(1), 37-52 (2014-12-17)
Aberrant Notch activity is oncogenic in several malignancies, but it is unclear how expression or function of downstream elements in the Notch pathway affects tumor growth. Transcriptional regulation by Notch is dependent on interaction with the DNA-binding transcriptional repressor, RBPJ
Pavla Pantůčková et al.
Journal of chromatography. A, 1389, 1-7 (2015-03-10)
Enhanced sensitivity for determination of basic drugs in body fluids was achieved by in-line coupling of extraction across supported liquid membrane (SLM) to large electrokinetic injection and transient isotachophoresis-capillary zone electrophoresis (tITP-CZE) in commercial CZE instrument. Twelve cm long tITP
Chris L Schaich et al.
Journal of cardiovascular pharmacology, 65(5), 473-479 (2015-01-31)
As they age, Sprague-Dawley (SD) rats develop elevated systolic blood pressure associated with impaired baroreflex sensitivity (BRS) for control of heart rate. We previously demonstrated in young hypertensive (mRen2)27 rats that impaired BRS is restored by CB1 cannabinoid receptor blockade
Nantana Nuchtavorn et al.
Journal of chromatography. A, 1286, 216-221 (2013-03-21)
Microfluidic chip electrophoresis (chip-CE) is a separation method that is compatible with portable and on-site analysis, however, only few commercial chip-CE systems with laser-induced fluorescence (LIF) and light emitting diode (LED) fluorescence detection are available. They are established for several
Monika Gibis et al.
Journal of food science, 80(11), C2430-C2439 (2015-10-08)
The impact of precursors such as creatine, creatinine, and glucose on the formation of mutagenic/carcinogenic heterocyclic amines (HAs) were studied in patties of 9 different animal species equally heat treated with a double-plate contact grill. All grilled patties of the
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
Sarah L Shammas et al.
Nature communications, 6, 7025-7025 (2015-05-01)
Protein aggregation plays a key role in neurodegenerative disease, giving rise to small oligomers that may become cytotoxic to cells. The fundamental microscopic reactions taking place during aggregation, and their rate constants, have been difficult to determine due to lack
Nils Tore Vethe et al.
Therapeutic drug monitoring, 36(1), 108-118 (2013-09-26)
The development of biomarkers describing the individual responses to the immunosuppressant mycophenolic acid (MPA) has focused on the target enzyme activity [inosine 5'-monophosphate dehydrogenase (IMPDH)]. An extended strategy is to quantify the metabolic consequences of IMPDH inhibition. The aim of
Djemel Hamdane et al.
Biochemistry, 54(28), 4354-4364 (2015-06-30)
Enzyme-catalyzed reactions often rely on a noncovalently bound cofactor whose reactivity is tuned by its immediate environment. Flavin cofactors, the most versatile catalyst encountered in biology, are often maintained within the protein throughout numbers of complex ionic and aromatic interactions.
Zbynek Dzuman et al.
Analytica chimica acta, 863, 29-40 (2015-03-04)
A new reliable and highly sensitive method based on high performance liquid chromatographic (HPLC) separation and high resolution tandem mass spectrometric detection (HRMS/MS) has been developed and validated for determination of 323 pesticide residues, 55 mycotoxins, and 11 plant toxins
Yoshiaki Ohtsu et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 997, 56-63 (2015-06-21)
We developed and validated bioanalytical methods for a potent helicase-primase inhibitor ASP2151 that has two conformers. These conformers elute as unseparated broad peaks under ordinary high-performance liquid chromatographic conditions, indicating discernable differences in hydrophobicity. We observed that column temperature and
Lauriane Goldwirt et al.
Journal of neuro-oncology, 122(2), 273-281 (2015-03-22)
Glioblastoma (GBM) is the most common primary malignant brain tumour in adults. Prognosis of GBM patients is poor with median overall survival around 15 months. Temozolomide is the chemotherapeutic agent used in the standard of care of newly diagnosed GBM
Kyounghwan Lee et al.
Journal of molecular biology, 427(2), 274-286 (2014-12-03)
Myosin binding protein C is a thick filament protein of vertebrate striated muscle. The cardiac isoform [cardiac myosin binding protein C (cMyBP-C)] is essential for normal cardiac function, and mutations in cMyBP-C cause cardiac muscle disease. The rod-shaped molecule is
Tara Mastren et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 90, 117-121 (2014-04-09)
Effective specific activity of (64)Cu (amount of radioactivity per µmol metal) is important in order to determine purity of a particular (64)Cu lot and to assist in optimization of the purification process. Metal impurities can affect effective specific activity and
Haoyue Zhang et al.
Molecular genetics and metabolism, 114(2), 123-128 (2014-12-03)
Mucopolysaccharidoses (MPS) are complex storage disorders that result in the accumulation of glycosaminoglycans (GAGs) in urine, blood, brain and other tissues. Symptomatic patients are typically screened for MPS by analysis of GAG in urine. Current screening methods used in clinical
Royston S Quintyn et al.
Analytical chemistry, 87(23), 11879-11886 (2015-10-27)
One attractive feature of ion mobility mass spectrometry (IM-MS) lies in its ability to provide experimental collision cross section (CCS) measurements, which can be used to distinguish different conformations that a protein complex may adopt during its gas-phase unfolding. However
Timothy M Allison et al.
Nature communications, 6, 8551-8551 (2015-10-07)
The effects of protein-ligand interactions on protein stability are typically monitored by a number of established solution-phase assays. Few translate readily to membrane proteins. We have developed an ion-mobility mass spectrometry approach, which discerns ligand binding to both soluble and
Charlène Pouech et al.
Journal of chromatography. A, 1423, 111-123 (2015-11-12)
Polymer items are extensively present in the human environment. Humans may be consequently exposed to some compounds, such as additives, incorporated in these items. The objective of this work is to assess the human exposure to the main additives such
Oskar Vilhelmsson-Timmermand et al.
Nuclear medicine and biology, 42(4), 375-380 (2015-01-13)
Human tumors xenografted in immunodeficient mice are crucial models in nuclear medicine to evaluate the effectiveness of candidate diagnostic and therapeutic compounds. However, little attention has been focused on the biological profile of the host model and its potential effects
Robert Jirásko et al.
Analytical and bioanalytical chemistry, 406(19), 4601-4610 (2014-05-21)
The combination of ultrahigh-resolution mass spectrometry imaging (UHRMSI) and ultrahigh-performance liquid chromatography coupled with tandem mass spectrometry (UHPLC/MS/MS) was used for the identification and the spatial localization of atorvastatin (AT) and its metabolites in rat tissues. Ultrahigh-resolution and high mass
S Squadrone et al.
Environmental monitoring and assessment, 187(7), 438-438 (2015-06-19)
Perfluoroalkylated substances (PFASs) are highly fluorinated aliphatic compounds with high thermal and chemical stability, used in a range of industrial applications. Extensive screening analyses in biota samples from all over the world have shown the bioaccumulation of PFAS into higher
Benedikt Warth et al.
Journal of chromatography. A, 1423, 183-189 (2015-11-12)
Nucleotide sugars, the activated forms of monosaccharides, are important metabolites involved in a multitude of cellular processes including glycosylation of xenobiotics. Especially in plants, UDP-glucose is one of the most prominent members among these nucleotide-sugars, as it is involved in
Sabin Prajapati et al.
Structure (London, England : 1993), 27(7), 1124-1136 (2019-05-28)
The pseudo-atomic structural model of human pyruvate dehydrogenase complex (PDHc) core composed of full-length E2 and E3BP components, calculated from our cryoelectron microscopy-derived density maps at 6-Å resolution, is similar to those of prokaryotic E2 structures. The spatial organization of
Yuki Maeda et al.
Journal of chromatography. A, 1355, 206-210 (2014-07-09)
A novel pre-column fluorescence derivatization method for chromatographic analysis of azide compounds was developed based on the Huisgen reaction, which is a specific cycloaddition reaction between an alkyne and an azide. We designed and synthesized a fluorescent alkyne, 2-(4-ethynylphenyl)-4,5-diphenyl-1H-imidazole (DIB-ET)
Carolien Grammen et al.
International journal of pharmaceutics, 475(1-2), 238-244 (2014-09-02)
The purpose of this work was to design and evaluate a vaginal film delivery system for UAMC01398, a novel non-nucleoside reverse transcriptase inhibitor currently under investigation for use as an anti-HIV microbicide. UAMC01398 (1mg) films consisting of hydroxypropylmethylcellulose (HPMC) and
Tejia Zhang et al.
ACS chemical biology, 10(6), 1398-1403 (2015-03-31)
BCL-2 proteins are key regulators of programmed cell death. The interplay between pro and antiapoptotic BCL-2 members has important roles in many cancers. In addition to their apoptotic function, recent evidence supports key nonapoptotic roles for several BCL-2 proteins. We
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