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Vicente Ferreira et al.
Journal of chromatography. A, 1407, 30-41 (2015-07-15)
SPME is extremely sensitive to experimental parameters affecting liquid-gas and gas-solid distribution coefficients. Our aims were to measure the weights of these factors and to design a multivariate strategy based on the addition of a pool of internal standards, to
Yuanyuan Zhou et al.
Molecules (Basel, Switzerland), 20(10), 19252-19262 (2015-10-28)
Among the classes of identified natural products, triterpenoids, one of the largest families, have been studied extensively for their diverse structures and variety of biological activities, including antitumor effects. In the present study, a phytochemical study of the green walnut
Jeremy G Owen et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(14), 4221-4226 (2015-04-02)
In molecular evolutionary analyses, short DNA sequences are used to infer phylogenetic relationships among species. Here we apply this principle to the study of bacterial biosynthesis, enabling the targeted isolation of previously unidentified natural products directly from complex metagenomes. Our
Valentino Ruggieri et al.
BMC plant biology, 14, 337-337 (2014-12-04)
Genome Wide Association Studies (GWAS) have been recently used to dissect complex quantitative traits and identify candidate genes affecting phenotype variation of polygenic traits. In order to map loci controlling variation in tomato marketable and nutritional fruit traits, we used
Arne Trettin et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 959, 71-81 (2014-04-29)
Paracetamol (acetaminophen) is a widely used safe analgesic drug when administered at therapeutic doses. Given the chemical reactivity of its phenolic group towards electrophilic species, we assumed that detection of paracetamol metabolites distinctly different from its known phase I metabolite
Zhiming Xiao et al.
Journal of chromatography. A, 1418, 29-35 (2015-10-05)
Subcritical water extraction was investigated as a novel and alternative technology for the separation of trace amounts of chloramphenicol, thiamphenicol, florfenicol and its major metabolite florfenicol amine from poultry tissues and its results were compared with those of conventional shaking
Tlabo C Leboho et al.
Bioorganic & medicinal chemistry, 23(15), 4943-4951 (2015-06-06)
The synthesis of 2,3,5-trisubstituted 7-azaindoles as well as 2,5-disubstituted 7-azaindoles from 3,5-dihalogenated 2-aminopyridines is outlined. Using a double Sonogashira coupling reaction on 2-amino-3,5-diiodopyridine followed by the Cacchi reaction the synthesis of 2,3,5-trisubstituted 7-azaindoles was accomplished. In addition, using two sequential
Rebecca J Strong et al.
General and comparative endocrinology, 214, 47-55 (2015-03-18)
This study investigated the feasibility of measuring corticosterone in feathers from cryo-archived raptor specimens, in order to provide a retrospective assessment of the activity of the stress axis in relation to contaminant burden. Feather samples were taken from sparrowhawk Accipiter
Phanuel Saroni Arwa et al.
Journal of ethnopharmacology, 174, 410-418 (2015-09-01)
Garcinia brasiliensis, a plant native to the Brazilian Amazon Rainforest, is used in traditional medicine to treat inflammation of the urinary tract, peptic ulcers, arthritis and other conditions. The purposes of this study were to analyze the chemical constituents of
Maria Celeiro et al.
Journal of chromatography. A, 1344, 1-14 (2014-04-29)
An effective, simple and low cost sample preparation method based on matrix solid-phase dispersion (MSPD) followed by gas chromatography-mass spectrometry (GC-MS) or gas chromatography-triple quadrupole-mass spectrometry (GC-MS/MS) has been developed for the rapid simultaneous determination of 38 cosmetic ingredients, 25
Anupam G Banerjee et al.
European journal of medicinal chemistry, 101, 81-95 (2015-06-29)
A series of triazin-3(2H)-one derivatives bearing 1,3,4-oxadiazole (4a-4o) were synthesized, characterized and evaluated for anti-inflammatory and analgesic activities. Preliminary in vitro anti-inflammatory activity was assessed using an albumin denaturation assay. The promising compounds were further evaluated in acute, sub-chronic and chronic
Kohji Abe et al.
Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 34(12), 1907-1913 (2014-09-18)
To assess reactive oxygen species (ROS) production by detecting the fluorescent oxidation product, hydroethidine has been used extensively. The present study was undertaken to evaluate the potential of the hydroethidine derivative as a radiotracer to measure in vivo brain ROS
Naima G Cortes-Perez et al.
BMC microbiology, 15, 112-112 (2015-05-25)
Mechanisms underlying the transition from commensalism to virulence in Enterococcus faecalis are not fully understood. We previously identified the enterococcal leucine-rich protein A (ElrA) as a virulence factor of E. faecalis. The elrA gene is part of an operon that
Yang Yang et al.
Environmental science & technology, 48(20), 12362-12369 (2014-09-16)
Disinfectants inactivate pathogens in source water; however, they also react with organic matter and bromide/iodide to form disinfection byproducts (DBPs). Although only a few DBP classes have been systematically analyzed for toxicity, iodinated and brominated DBPs tend to be the
Fumio Kondo et al.
Analytical and bioanalytical chemistry, 407(18), 5261-5272 (2015-01-31)
Determination of neuroactive substances, such as neurotransmitters and prostanoids, in the extracellular space of the living brain is a very important technique in neuroscience. The hypothalamic paraventricular nucleus (PVN) is one of the most important autonomic control centers in the
Lorraine Aparecida Pinto et al.
Naunyn-Schmiedeberg's archives of pharmacology, 388(3), 305-317 (2014-11-25)
The purpose of the present study was to evaluate the gastroprotective and healing effects of the methanolic extract of the seed of the papaya Carica papaya L. (MECP) in rats. Models of acute gastric ulcer induction by ethanol and indomethacin
Jean Claude Alvarez et al.
Bioanalysis, 7(13), 1675-1684 (2015-08-01)
Remifentanil and propofol are often used in combination for general anesthesia. We developed a method using LC-MS for their simultaneous measurement in human plasma. Methodology & results: After addition of remifentanil-(13)C6 and propofol-d18 (IS), 500 µl of plasma were extracted
Lutz Ahrens et al.
Journal of chromatography. A, 1405, 1-11 (2015-06-20)
Five different passive sampler devices were characterized under laboratory conditions for measurement of 124 legacy and current used pesticides in water. In addition, passive sampler derived time-weighted average (TWA) concentrations were compared to time-integrated active sampling in the field. Sampling
Emanuela Scolamiero et al.
Molecular bioSystems, 11(6), 1525-1535 (2015-02-18)
Inborn errors of metabolism are genetic disorders due to impaired activity of enzymes, transporters, or cofactors resulting in accumulation of abnormal metabolites proximal to the metabolic block, lack of essential products or accumulation of by-products. Many of these disorders have
Natalie Cortes et al.
Life sciences, 122, 42-50 (2014-12-23)
Amaryllidaceae alkaloids exhibit a wide range of physiological effects, of which the acetylcholinesterase (AChE) inhibitory activity is the most relevant. However, scientific evidence related to their neuroprotective effectiveness against glutamate-induced toxicity has been lacking. Thus, the purpose of this study
Nicolas Morin et al.
Environmental science & technology, 49(13), 7675-7683 (2015-06-10)
The plastic additive bisphenol A (BPA) is commonly found in landfill leachate at levels exceeding acute toxicity benchmarks. To gain insight into the mechanisms controlling BPA emissions from waste and waste-handling facilities, a comprehensive field and laboratory campaign was conducted
Chang Li et al.
Journal of agricultural and food chemistry, 63(44), 9850-9854 (2015-10-20)
The capacities of six antioxidants to inhibit the formation of 3-monochloropropane-1,2 diol (3-MCPD) esters were examined in this study. Inhibitory capacities of the antioxidants were investigated both in chemical models containing the precursors (tripalmitoyl glycerol, 1,2-dipalmitoyl-sn-glycerol, monopalmitoyl glycerol, and sodium
Giampietro Frison et al.
Rapid communications in mass spectrometry : RCM, 29(13), 1196-1204 (2015-09-24)
We describe the analytical characterization of the designer drug bk-2C-B, a cathinone derivative, contained in a seized tablet, in the absence of an analytical standard. The analytical techniques employed include gas chromatography/mass spectrometry (GC/MS), without and with derivatization with 2,2,2-trichloroethyl
Franziska Janusch et al.
Environmental toxicology and pharmacology, 38(3), 792-799 (2014-10-13)
The application of antibiotics including fluoroquinolones to farming animals is widespread and may lead to the development of antibiotic resistance and other environmental effects. To calculate environmental loads and for a proper risk assessment it is necessary to determine the
Matthew Fankhauser et al.
Clinical cancer research : an official journal of the American Association for Cancer Research, 20(21), 5547-5557 (2014-04-29)
It has been recognized for almost a decade that concentrations of signaling androgens sufficient to activate the androgen receptor are present in castration-resistant prostate cancer tissue. The source of these androgens is highly controversial, with three competing models proposed. We
Abhishek Bhanot et al.
Pakistan journal of biological sciences : PJBS, 16(22), 1612-1617 (2014-02-12)
To explore in vitro anticancer potential of Aerva lanata L. (flowering aerial part). The study was performed with 5 different human cell lines for the study of lung, leukaemia, prostate, colon and cervix cancer by using Sulphorhodamine B (SRB) assay.
J P Tindall
Journal of the American Academy of Dermatology, 13(4), 539-558 (1985-10-01)
Chloracne, an acneform eruption resulting from poisoning by halogenated aromatic compounds, has been a considerable problem over the last 40 years. The condition is always a symptom of systemic poisoning and should be familiar to all practitioners, particularly dermatologists. It
Nuria Ortuño et al.
The Science of the total environment, 499, 27-35 (2014-09-01)
The constant increase in the production of electronic devices implies the need for an appropriate management of a growing number of waste electrical and electronic equipment. Thermal treatments represent an interesting alternative to recycle this kind of waste, but particular
Terencio R Aguiar et al.
Environmental science and pollution research international, 22(14), 10618-10626 (2015-03-07)
Several studies have pointed to the potential benefits of riparian vegetation as buffer zones for agricultural and industrial pollutants harmful to aquatic ecosystems. However, other studies have called into question its use as an ecological filter, questioning the widths and
Koichi Natori et al.
Chirality, 27(8), 479-486 (2015-05-07)
Two analogs of blestriarene C (4,4'-dimethoxy-1,1'-biphenanthrene-2,2',7,7'-tetraol) bearing no 7,7'-dihydroxy (3) and 4,4'-dimethoxy groups were prepared. Unlike blestriarene C (1), compounds and , as well as 1,1'-biphenanthrene-2,2'-diol (5), do not racemize under fluorescent lamp illumination. Cyclic voltammetry analysis reveals that compound
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