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Giuseppe De Palma et al.
Biomarkers : biochemical indicators of exposure, response, and susceptibility to chemicals, 17(4), 343-351 (2012-03-31)
This cross-sectional study was aimed at reconstructing the exposure to gasoline in 102 petrol station attendants by environmental and biological monitoring of benzene, toluene, ethylbenzene and xylene (BTEX) and biomonitoring of methyl tert-butyl ether (MTBE). Airborne BTEX were higher for
Yuru Wang et al.
Environmental science & technology, 48(24), 14534-14542 (2014-11-26)
A sulfate radical-based advanced oxidation process (SR-AOP) has received increasing application interest for the removal of water/wastewater contaminants. However, limited knowledge is available on its side effects. This study investigated the side effects in terms of the production of total
Liangpo Liu et al.
Journal of separation science, 38(2), 247-253 (2014-11-12)
In this study, a novel method for the analysis of perfluorinated compounds in whole blood has been developed and validated. The method was developed by using a conventional reversed-phase C18 column as a trapping column for the elimination of background
Wim Van Gansbeke et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1001, 221-240 (2015-08-22)
In 2013, the World Anti-Doping Agency (WADA) drastically lowered the minimum required performance levels (MRPLs) of most doping substances, demanding a substantial increase in sensitivity of the existing methods. For a number of compounds, conventional electron impact ionization gas chromatography
Jérôme Cotton et al.
Journal of agricultural and food chemistry, 62(46), 11335-11345 (2014-10-31)
Analytical methods for food control are mainly focused on restricted lists of well-known contaminants. This paper shows that liquid chromatography-high-resolution mass spectrometry (LC/ESI-HRMS) associated with the data mining tools developed for metabolomics can address this issue by enabling (i) targeted
Laura J Owen et al.
Annals of clinical biochemistry, 50(Pt 5), 489-491 (2013-07-31)
Supported liquid extraction (SLE) techniques are relatively new compared to other sample preparation approaches such as solid phase extraction (SPE), liquid-liquid extraction (LLE) and protein precipitation (PPE). We investigated the use of SLE as an alternative to SPE for the
Justine Lanzini et al.
Biochimie, 118, 234-243 (2015-10-03)
Nude mice carry a spontaneous mutation affecting the gene Foxn1 mainly expressed in the epidermis. This gene is involved in several skin functions, especially in the proliferation and the differentiation of keratinocytes which are key cells of epithelial barrier. The
Sean M Prager et al.
Environmental entomology, 44(4), 1065-1075 (2015-08-28)
Plant pathogens can influence the behavior and performance of insect herbivores. Studies of these associations typically focus on tripartite interactions between a plant host, a plant pathogen, and its insect vector. An unrelated herbivore or pathogen might influence such interactions.
Igor Otavio Minatel et al.
Journal of medicinal food, 17(10), 1134-1141 (2014-08-28)
Bioactive components in rice vary depending on the variety and growing condition. Fat-soluble components such as γ-oryzanol, tocopherols, tocotrienols, carotenoids, and fatty acids were analyzed in brown, sugary brown, red, and black rice varieties using established high-performance liquid chromatography (HPLC)
Cecilia Karlsson et al.
Endocrinology, 156(4), 1237-1241 (2014-12-31)
The individual weight loss response to obesity treatment is diverse. Here we test the hypothesis that the weight loss response to the CB1 receptor antagonist rimonabant is influenced by endogenous levels of receptor agonists. We show that baseline anandamide levels
J-F Li et al.
European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 33(10), 1725-1732 (2014-05-09)
Hepatic steatosis affects disease progression in patients with chronic hepatitis C virus (HCV) infection. We investigated the plasma sphingolipid profile in patients with chronic hepatitis C (CHC) and whether there was an association between HCV-related steatosis and plasma sphingolipids. We
Scott Phillips et al.
Journal of medical toxicology : official journal of the American College of Medical Toxicology, 4(2), 115-126 (2008-06-24)
This paper reviews the published information assessing the kinetics and potential for adverse health effects related to exposure to the fuel oxygenate, methyl tert-butyl ether (MTBE). Data were obtained from previously published reports, using human data where possible. If human
Miroslav Ryska
European journal of mass spectrometry (Chichester, England), 21(3), 423-432 (2015-08-27)
Adsorption effects in the chromatographic system and/or ion source may play a very important role in the ionization processes of liquid chromatography/mass spectrometry. They have been illustrated and considered as matrix effects extensively. These effects cannot be simply removed by
David Ilko et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 94, 569-574 (2014-12-03)
The fatty acid (FA) composition of polysorbate 80 (PS80), a sorbitan oleic acid ester copolymerized with about 20mole of ethylene oxide, is typically characterized by gas chromatography. Here, an alternative method was developed. After saponification with potassium hydroxide the FA
Chuan-Hsi Hung et al.
Journal of separation science, 38(17), 2968-2974 (2015-06-16)
Three mixed-mode high-performance liquid chromatography columns packed with superficially porous carbon/nanodiamond/amine-polymer particles were used to separate mixtures of cannabinoids. Columns evaluated included: (i) reversed phase (C18 ), weak anion exchange, 4.6 × 33 mm, 3.6 μm, and 4.6 × 100
Manisha Bhateria et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1001, 131-139 (2015-08-19)
Recently, a fixed dose combination (FDC) of memantine (MM) and donepezil (DPZ) has been approved for the treatment of Alzheimer's disease (AD). In the present work, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the simultaneous determination of MM and
Yu Li et al.
Journal of ethnopharmacology, 171, 154-160 (2015-06-10)
Isoboldine is one of the major bioactive constituents in the total alkaloids from Radix Linderae (TARL) which could effectively alleviate inflammation and joints destruction in mouse collagen-induced arthritis. To better understand its pharmacological activities, we need to determine its pharmacokinetic
Annelie Hansson et al.
Drug testing and analysis, 7(8), 673-683 (2015-01-07)
Selective androgen receptor modulators, SARMs, constitute a class of compounds with anabolic properties but with few androgenic side-effects. This makes them possible substances of abuse and the World Anti-Doping Agency (WADA) has banned the entire class of substances. There have
Rohini Sidhu et al.
Journal of lipid research, 56(6), 1222-1233 (2015-04-14)
24(S)-hydroxycholesterol [24(S)-HC] is a cholesterol metabolite that is formed almost exclusively in the brain. The concentrations of 24(S)-HC in cerebrospinal fluid (CSF) and/or plasma might be a sensitive marker of altered cholesterol metabolism in the CNS. A highly sensitive 2D-LC-MS/MS
Anna Vallverdú-Queralt et al.
International journal of molecular sciences, 16(5), 9588-9599 (2015-05-01)
The consumption of carotenoid-rich vegetables such as tomatoes and tomato sauces is associated with reduced risk of several chronic diseases. The predominant carotenoids in tomato products are in the (all-E) configuration, but (Z) isomers can be formed during thermal processing.
Chamila Nimalaratne et al.
Food chemistry, 194, 111-116 (2015-10-17)
The aromatic amino acids and carotenoids are the major contributors to the antioxidant properties of egg yolk. This study aimed to evaluate the effect of simulated retail storage and domestic cooking on the antioxidant activity as well as on the
Sylvain Merel et al.
Chemosphere, 127, 238-245 (2015-03-10)
N,N-diethyl-m-toluamide (DEET), the active component of many insect repellents, is among the most frequently detected compounds in aqueous environments with concentrations reported in the ng L(-1) to μg L(-1) range. However, DEET is often detected in blanks and reported concentrations
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
Ceinwen A Schreiner et al.
Regulatory toxicology and pharmacology : RTP, 70(2 Suppl), S29-S34 (2014-05-24)
Micronucleus and sister chromatid exchange (SCE) tests were performed for vapor condensate of baseline gasoline (BGVC), or gasoline with oxygenates, methyl tert-butyl ether (G/MTBE), ethyl tert butyl ether (G/ETBE), t-amyl methyl ether (G/TAME), diisopropyl ether (G/DIPE), t-butyl alcohol (TBA), or
Shanshan Li et al.
Environmental science and pollution research international, 22(13), 10196-10205 (2015-02-24)
The release of methyl tert-butyl-ether (MTBE) into the environment has increased the worldwide concern about the pollution of MTBE. In this paper, a microbial consortium was isolated from the soil sample near an oil station, which can degrade MTBE directly
Damayanthi Devineni et al.
Clinical therapeutics, 37(3), 610-628 (2015-02-11)
Canagliflozin is a sodium-glucose cotransporter 2 inhibitor approved for the treatment of type 2 diabetes mellitus (T2DM). Because T2DM is often associated with renal or hepatic impairment, understanding the effects of these comorbid conditions on the pharmacokinetics of canagliflozin, and
Jun-Feng Li et al.
Molecular medicine reports, 12(1), 323-330 (2015-02-20)
The plasma profile of sphingolipids in hepatic fibrosis patients with chronic hepatitis C (CHC) is rarely considered at present. The association between plasma sphingolipids and severe fibrosis in CHC remains an obscure area of research. The aim of the present
Julie A Ray et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 970, 102-107 (2014-09-24)
Accurate measurement of aldosterone is important for the standardized testing of primary hyperaldosteronism. Commercial immunoassays show substantial between-method variations resulting in significant clinical consequences. We developed a specific two dimensional (2D)-LC-MS/MS method for measuring aldosterone in human serum and plasma
A Hokkanen et al.
Biomicrofluidics, 9(5), 054109-054109 (2015-10-01)
We have developed a microfluidics based sampling system for tissue analytics. The proof-of-concept of the sampling system was demonstrated by extracting lipid samples from tissue biopsies. The sample collection system consists of a disposable silicon based multiport microneedle integrated with
J Scott Boone et al.
Journal of chromatography. A, 1345, 68-77 (2014-05-06)
A trace analytical method was developed for the determination of seventeen specific perfluorinated chemicals (PFCs) in environmental and drinking waters. The objectives were to optimize an isotope-dilution method to increase the precision and accuracy of the analysis of the PFCs
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