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Christiane Auray-Blais et al.
Clinica chimica acta; international journal of clinical chemistry, 436, 249-255 (2014-06-10)
Creatine synthesis and transport disorders, Triple H syndrome and ornithine transcarbamylase deficiency are treatable inborn errors of metabolism. Early screening of patients was found to be beneficial. Mass spectrometry analysis of specific urinary biomarkers might lead to early detection and
J K Htoo et al.
Journal of animal science, 90 Suppl 4, 346-349 (2013-02-13)
Dietary inclusion of salts of organic acids may modulate intestinal microbiota and enhance performance of pigs. Published data on the effects of potassium formate (KF; pH 6.0-8.5) on pig performance are scarce compared with that of potassium diformate (KDF; pH
Xavier Matabosch et al.
Journal of mass spectrometry : JMS, 50(3), 633-642 (2015-03-25)
Glucocorticosteroids are prohibited in sports when used by systemic administrations (e.g. oral), whereas they are allowed using other administration ways. Strategies to discriminate between administrations routes have to be developed by doping control laboratories. For this reason, the metabolism of
Ying Zhou et al.
Biomedical chromatography : BMC, 28(12), 1597-1600 (2014-05-09)
A rapid, simple and validated method based on liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) has been developed for the determination of granisetron in human plasma. Plasma samples were pre-purified by protein precipitation procedure. The chromatographic separation was achieved
A T Mata et al.
Food chemistry, 176, 455-464 (2015-01-28)
The presence of mycotoxins in food samples has been widely studied as well as its impact in human health, however, information about its distribution in the environment is scarce. An analytical method comprising a solid phase extraction procedure followed by
Michael J Wright et al.
Clinical chemistry, 61(3), 505-513 (2015-01-22)
LC-MS/MS with multiple reaction monitoring (MRM) is a powerful tool for quantifying target analytes in complex matrices. However, the technique lacks selectivity when plasma free metanephrines are measured. We propose the use of multistage fragmentation (MRM(3)) to improve the analytical
Remco A Koster et al.
Therapeutic drug monitoring, 36(1), 35-45 (2013-09-28)
To facilitate the monitoring of drug abuse by patients, a method was developed and validated for fast and highly selective screening for amphetamine, methamphetamine, 3,4-methylenedioxymethamphetamine, methylenedioxyamphetamine, methylenedioxyethylamphetamine, methylphenidate, cocaine, benzoylecgonine, morphine, codeine, heroin, 6-monoacteylmorphine, methadone, 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine, nicotine, and cotinine in
Rao Mukkavilli et al.
PloS one, 9(9), e108386-e108386 (2014-09-25)
Natural and complementary therapies in conjunction with mainstream cancer care are steadily gaining popularity. Ginger extract (GE) confers significant health-promoting benefits owing to complex additive and/or synergistic interactions between its bioactive constituents. Recently, we showed that preservation of natural "milieu"
Gilles Provencher et al.
Journal of chromatography. A, 1348, 97-104 (2014-05-20)
Bisphenol A (BPA) and triclosan (TCS) are ubiquitous environmental phenols exhibiting endocrine disrupting activities that may be involved in various health disorders in humans. There is a need to measure separately free forms and conjugated metabolites because only the former
Xiaowu Chen et al.
Analytica chimica acta, 836, 61-71 (2014-07-01)
A novel method based on the strategy of N-phosphorylation labeling is described for quantification of twenty natural amino acids in human serum by reversed-phase liquid chromatography-electrospray tandem mass spectrometry (RP-LC/ESI-MS). The derivatization reaction was easily performed in one-pot reaction under
Dae J Park et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 962, 147-152 (2014-06-14)
New tandem mass spectrometric method coupled with liquid chromatography (LC-MS/MS) has been developed to determine the total concentration of camptothecin derivatives (irinotecan and SN-38) regardless of inter-conversion phenomenon between carboxylate and lactone forms. At first, all sample solutions were acidified
Noel Kong et al.
Journal of separation science, 37(21), 3015-3023 (2014-08-22)
A sensitive hydrophilic interaction liquid chromatography coupled with tandem mass spectrometry method was developed and validated for the simultaneous detection and quantification of etilefrine and oxilofrine in equine blood plasma and urine. The method is highly sensitive and specific with
Diana L Shuster et al.
Biochemical pharmacology, 92(4), 690-700 (2014-12-03)
Glyburide is commonly prescribed for the treatment of gestational diabetes mellitus; however, fetal exposure to glyburide is not well understood and may have short- and long-term consequences for the health of the child. Glyburide can cross the placenta; fetal concentrations
Therese Fagerqvist et al.
Journal of neurochemistry, 126(1), 131-144 (2013-02-01)
Inclusions of intraneuronal alpha-synuclein (α-synuclein) can be detected in brains of patients with Parkinson's disease and dementia with Lewy bodies. The aggregation of α-synuclein is a central feature of the disease pathogenesis. Among the different α-synuclein species, large oligomers/protofibrils have
Linlin Zhao et al.
Evidence-based complementary and alternative medicine : eCAM, 2014, 385102-385102 (2014-08-21)
A metabonomics approach based on liquid chromatography/quadrupole time-of-flight mass spectrometry (LC-Q-TOF/MS) was utilized to obtain potential biomarkers of coronary heart disease (CHD) patients and investigate the ZHENG types differentiation in CHD patients. The plasma samples of 20 CHD patients with
Lizhen Qiao et al.
Journal of chromatography. A, 1360, 240-247 (2014-08-19)
Glucaminium-based ionic liquids are a new class of recently developed ionic liquids and prepared by functionalizing the amine group of N-methyl-d-glucamine, which renders them good hydrophilicity due to the presence of the glucose structure and charged quaternary ammonium group. In
Xi Huang et al.
PloS one, 9(11), e113819-e113819 (2014-11-27)
Meranzin hydrate (MH), an absorbed bioactive compound from the Traditional Chinese Medicine (TCM) Chaihu-Shugan-San (CSS), was first isolated in our laboratory and was found to possess anti-depression activity. However, the role of cytochrome P450s (CYPs) in the metabolism of MH
Jessica Welter et al.
Analytical and bioanalytical chemistry, 407(5), 1371-1388 (2014-12-05)
5-APB (5-(2-aminopropyl)benzofuran) and its N-methyl derivative 5-MAPB (N-methyl-5-(2-aminopropyl)benzofuran) are analogues of amphetamine and methamphetamine, respectively, and belong to the so-called novel psychoactive substances (NPS). They were consumed as stimulants or entactogens with euphoric and empathogenic effects. Being controlled in some
Miranda G M Kok et al.
Talanta, 132, 1-7 (2014-12-06)
In order to assess the utility of a recently developed capillary electrophoresis-mass spectrometry (CE-MS) method for the study of anionic metabolites in urine, a comparison was made with hydrophilic interaction chromatography-MS (HILIC-MS) using negative electrospray ionization. After optimization of the
Jace W Jones et al.
Analytical and bioanalytical chemistry, 406(19), 4663-4675 (2014-05-21)
The potential risk of a radiological catastrophe highlights the need for identifying and validating potential biomarkers that accurately predict radiation-induced organ damage. A key target organ that is acutely sensitive to the effects of irradiation is the gastrointestinal (GI) tract
María del Mar Ramírez Fernández et al.
Journal of analytical toxicology, 38(5), 280-288 (2014-05-03)
The aim of this work was to automate a sample preparation procedure extracting morphine, hydromorphone, oxymorphone, norcodeine, codeine, dihydrocodeine, oxycodone, 6-monoacetyl-morphine, hydrocodone, ethylmorphine, benzoylecgonine, cocaine, cocaethylene, tramadol, meperidine, pentazocine, fentanyl, norfentanyl, buprenorphine, norbuprenorphine, propoxyphene, methadone and 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine from urine samples.
Tu Liang et al.
Journal of chromatography. A, 1388, 110-118 (2015-03-03)
A diterpene glycoside compound, rebaudioside A (commonly abbreviated as RA), was immobilized onto porous silica surface through "thiol-ene" click chemistry strategy. The successful immobilization of the RA on the silica support was confirmed by FT-IR and elemental analysis. Chromatographic characteristics
Raman Sharma et al.
Drug metabolism and disposition: the biological fate of chemicals, 43(2), 190-198 (2014-11-12)
A previous report from our laboratory disclosed the identification of PF-04991532 [(S)-6-(3-cyclopentyl-2-(4-trifluoromethyl)-1H-imidazol-1-yl)propanamido)nicotinic acid] as a hepatoselective glucokinase activator for the treatment of type 2 diabetes mellitus. Lack of in vitro metabolic turnover in microsomes and hepatocytes from preclinical species and
Qianying Sheng et al.
Journal of chromatography. A, 1345, 57-67 (2014-05-06)
A-saccharide-based stationary phase for hydrophilic interaction liquid chromatography (HILIC) is presented. The method uses carbonyl di-imidazole (CDI) as a cross-linker for dextran in aqueous solution. Different from the traditional immobilized saccharide stationary phase, this method was using a simple way
Thomas Berg et al.
Journal of chromatography. A, 1344, 83-90 (2014-05-02)
Stable isotope-labeled internal standards (SIL-ISs) are often used when applying liquid chromatography-tandem mass spectrometry (LC-MS/MS) to analyze for legal and illegal drugs. ISs labeled with (13)C, (15)N, and (18)O are expected to behave more closely to their corresponding unlabeled analytes
Nicolaas A Verwey et al.
Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis, 20(3), 179-187 (2013-07-09)
Abstract Amyloid β-peptide (Aβ) is a key molecule in Alzheimer's disease (AD). Reliable immunohistochemical (IHC) methods to detect Aβ and Aβ-associated factors (AAF) in brain specimens are needed to determine their role in AD pathophysiology. Formic acid (FA) pre-treatment, which
Pavel Kubáň et al.
Analytica chimica acta, 768, 82-89 (2013-03-12)
A simple method using direct injection of human blood samples and quantitative analysis of formate was developed for rapid diagnosis of methanol poisoning. A sample pretreatment device including a 500Da molecular weight cut-off dialysis membrane was in-line coupled to capillary
A Mena-Bravo et al.
Clinica chimica acta; international journal of clinical chemistry, 442, 6-12 (2015-01-13)
A method for quantitative analysis of vitamin D (both D2 and D3) and its main metabolites - monohydroxylated vitamin D (25-hydroxyvitamin D2 and 25-hydroxyvitamin D3) and dihydroxylated metabolites (1,25-dihydroxyvitamin D2, 1,25-dihydroxyvitamin D3 and 24,25-dihydroxyvitamin D3) in human serum is here
Bio-inspired catalytic imine reduction by rhodium complexes with tethered Hantzsch pyridinium groups: evidence for direct hydride transfer from dihydropyridine to metal-activated substrate.
Alex McSkimming et al.
Angewandte Chemie (International ed. in English), 52(12), 3411-3416 (2013-02-27)
Ganesh S Moorthy et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 971, 30-34 (2014-09-30)
We describe a selective and highly sensitive high-performance liquid chromatography-electrospray ionization-collision induced dissociation-tandem mass spectrometry (HPLC-ESI-CID-MS/MS) assay for the pan-antiapoptotic Bcl-2 family inhibitor, obatoclax, in human plasma. Fifty μL plasma specimens were prepared by addition of extraction solution consisting of
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