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Pierina Visciano et al.
Journal of food protection, 78(9), 1719-1728 (2015-09-01)
Concentrations of pollutants with regulatory limits were determined in specimens of Chamelea gallina, a species of clam collected along the Abruzzi coastal region of the central Adriatic Sea. Nine sampling sites were selected to evaluate the distribution of contaminants in
Elena S Chernetsova et al.
Rapid communications in mass spectrometry : RCM, 29(13), 1242-1252 (2015-09-24)
Visual monitoring of the Direct Analysis in Real Time (DART) gas impact region during sampling was demonstrated via its metastable plasma glow. It is known that adding neon into helium for DART leads to plasma glow, but this effect has
Haitao Huang et al.
Colloids and surfaces. B, Biointerfaces, 133, 362-369 (2015-07-06)
In this study, a novel micellar drug carrier was fabricated from an amphiphilic diblock copolymer containing poly (ethylene glycol) monomethyl ether (mPEG) and stearic moiety (C18) with a linkage of valine-citrulline (VC), which can be cleaved by cathepsin B (CB)
Julio César España Amórtegui et al.
Food chemistry, 182, 14-22 (2015-04-07)
The most relevant parameters of a multimode inlet were optimized to increase the injection volume up to 25 μL using solvent vent mode in order to improve the sensitivity of the gas chromatography-mass spectrometry system. Consequently, the implementation of a
Vanessa Cardeñosa et al.
Molecules (Basel, Switzerland), 20(5), 8287-8302 (2015-05-12)
Five sweet orange (Citrus sinensis Osbeck) varieties cultivated in Huelva (Spain) and picked at two seasons during two consecutive years, were characterized for their antioxidant activity (free radicals scavenging activity, reducing power and lipid peroxidation inhibition) and vitamin content (vitamin
Complete oxidation of CO, ethanol, and ethyl acetate over copper oxide supported on titania and ceria modified titania.
Larsson PO and Andersson A.
J. Catal., 179(1), 72-89 (1998)
Yu Ait Bamai et al.
International journal of hygiene and environmental health, 218(5), 461-470 (2015-04-19)
We measured urinary phthalate metabolites, including di-n-butyl phthalate (DnBP), di-isobutyl phthalate, benzyl butyl phthalate (BBzP), and di(2-ethylhexyl) phthalate (DEHP), from 178 school-aged children and their 284 family members using gas chromatography-mass spectrometry, and we calculated daily phthalate intakes. The highest
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
Jingjing Jin et al.
Journal of experimental botany, 66(13), 3959-3975 (2015-05-10)
The pleasant fragrance of ylang ylang varieties (Cananga odorata) is mainly due to volatile organic compounds (VOCs) produced by the flowers. Floral scents are a key factor in plant-insect interactions and are vital for successful pollination. C. odorata var. fruticosa
Kalaiselvi Senthil et al.
PloS one, 10(4), e0123360-e0123360 (2015-04-16)
Free radical scavenging activity (FRSA), total phenolic content (TPC), and total flavonoid content (TFC) of in vitro cultured and field grown Withania somnifera (Ashwagandha) roots were investigated. Withanolides analysis and comprehensive metabolic profiling between 100% methanol extracts of in vitro
Rosa María González Paredes et al.
Journal of chromatography. A, 1359, 52-59 (2014-08-13)
A method based on the coupling of in situ extraction and derivatization of chlorophenols (CPs) (2-chlorophenol, 4-chloro-3-methylphenol, 2,4-dichlorophenol, and 2,4,6-trichlorophenol) from soils, accomplishing their preconcentration by means of automated microextraction by packed sorbent (MEPS), is proposed. After extraction and acylation
Foyez Mahmud et al.
Molecular pharmaceutics, 12(6), 1911-1920 (2015-04-22)
Currently, oral administration of insulin still remains the best option to avoid the burden of repeated subcutaneous injections and to improve its pharmacokinetics. The objective of the present investigation was to demonstrate the absorption mechanism of insulin in the physical
Marianne de Villiers et al.
The FEBS journal, 281(20), 4731-4753 (2014-08-27)
N-substituted pantothenamides are analogues of pantothenic acid, the vitamin precursor of CoA, and constitute a class of well-studied bacterial growth inhibitors that show potential as new antibacterial agents. Previous studies have highlighted the importance of pantothenate kinase (PanK; EC 2.7.1.33)
Marlene Vila et al.
Journal of chromatography. A, 1405, 12-22 (2015-06-21)
A methodology based on pressurized liquid extraction (PLE) followed by gas chromatography-tandem mass spectrometry (GC-MS/MS) has been developed for the simultaneous analysis of different classes of UV filters including methoxycinnamates, benzophenones, salicylates, p-aminobenzoic acid derivatives, and others in cosmetic products.
Katherine Chulvi et al.
Molecules (Basel, Switzerland), 20(11), 20688-20698 (2015-11-28)
The crystal structure of two neutral triarylmethane dyes with a p-quinone methide core was determined by X-ray diffraction analysis. The spectroscopic characteristics of both compounds in 23 solvents with different polarities or hydrogen-bonding donor (HBD) abilities has been studied as
Yuji Mano et al.
Journal of pharmaceutical and biomedical analysis, 114, 82-87 (2015-06-01)
A sensitive method for the determination of total and unbound lenvatinib (Lenvima™), a novel tyrosine kinase inhibitor, in human serum was developed for protein binding studies using an equilibrium dialysis and liquid chromatography with tandem mass spectrometry. Serum samples (0.8
Sérgio Sousa et al.
Food chemistry, 188, 504-509 (2015-06-05)
The objective of this research work was to investigate the antioxidant properties of sterilized yacon tuber flour. The results revealed for the first time the high antioxidant activity of sterilized yacon flour. The best extract obtained by boiling 8.9% (w/v)
Kenji Takahashi et al.
Applied and environmental microbiology, 81(23), 8022-8036 (2015-09-13)
Sphingobium sp. strain SYK-6 is able to degrade various lignin-derived biaryls, including a phenylcoumaran-type compound, dehydrodiconiferyl alcohol (DCA). In SYK-6 cells, the alcohol group of the B-ring side chain of DCA is initially oxidized to the carboxyl group to generate
Ariel R Topletz et al.
Molecular pharmacology, 87(3), 430-441 (2014-12-11)
All-trans-retinoic acid (atRA), the active metabolite of vitamin A, induces gene transcription via binding to nuclear retinoic acid receptors (RARs). The primary hydroxylated metabolites formed from atRA by CYP26A1, and the subsequent metabolite 4-oxo-atRA, bind to RARs and potentially have
Deependra Kumar et al.
Bioorganic chemistry, 57, 57-64 (2014-09-16)
Some 5,6-dihydropyrazolo/pyrazolo[1,5-c]quinazoline derivatives were rationally designed, synthesized and evaluated for in vitro xanthine oxidase inhibitory activity for the first time. Some notions about structure activity relationships are presented. The compounds 6g, 6h and 6e were found to be significantly active
Josephine Al-Alam et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 50(11), 788-796 (2015-09-12)
Pesticides are a real concern for the society as their use has become critical, leading sometimes to their accumulation as residues in fruits and vegetables. After examining the pesticides sold in Northern Lebanon, this study is focused on the analysis
Cunliu Zhou et al.
Pakistan journal of pharmaceutical sciences, 26(5), 1023-1025 (2013-09-17)
Berberine and palmatine are two of the main bioactive components in Huangbai, a major Chinese medicinal herb. The current methods to extract these compounds usually involving the usage of inorganic acid and base, are not only complex and time-consuming, but
A Srivastava et al.
Antimicrobial agents and chemotherapy, 59(4), 2169-2178 (2015-02-04)
The discovery of quorum-sensing (QS) systems regulating antibiotic resistance and virulence factors (VFs) has afforded a novel opportunity to prevent bacterial pathogenicity. Dietary molecules have been demonstrated to attenuate QS circuits of bacteria. But, to our knowledge, no study exploring
Lucia Semelkova et al.
Molecules (Basel, Switzerland), 20(5), 8687-8711 (2015-05-27)
A series of N-alkyl-3-(alkylamino)pyrazine-2-carboxamides and their N-alkyl-3-chloropyrazine-2-carboxamide precursors were prepared. All compounds were characterized by analytical methods and tested for antimicrobial and antiviral activity. The antimycobacterial MIC values against Mycobacterium tuberculosis H37Rv of the most effective compounds, 3-(hexylamino)-, 3-(heptylamino)- and
Kah Yan How et al.
PeerJ, 3, e1117-e1117 (2015-08-21)
Quorum sensing is a mechanism for regulating proteobacterial gene expression in response to changes in cell population. In proteobacteria, N-acyl homoserine lactone (AHL) appears to be the most widely used signalling molecules in mediating, among others, the production of extracellular
Shupeng Yang et al.
Analytical and bioanalytical chemistry, 407(13), 3579-3589 (2015-03-17)
Ochratoxin A (OTA) is a mycotoxin that frequently contaminates a wide variety of food and feedstuffs. The metabolism of OTA greatly affects fate and toxicity in humans and animals, because of its possible carcinogenic character (International Agency for Research on
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
Ashish Punia et al.
International journal of molecular sciences, 16(10), 23867-23880 (2015-10-17)
Synthetic amphiphilic polymers have been established as potentially efficient agents to combat widespread deadly infections involving antibiotic resistant superbugs. Incorporation of poly(ethylene glycol) (PEG) side chains into amphiphilic copolymers can reduce their hemolytic activity while maintaining high antibacterial activity. Our
Rasika S Phansalkar et al.
Fitoterapia, 101, 169-178 (2014-12-30)
Grape seeds are a rich source of polyphenols, especially proanthocyanidins (PACs), and are also known for the presence of galloylated oligomeric PACs (OPACs). The present study focuses on the phytochemical methodology for grape seed (O)PACs and their potential role as
Huiqin Pan et al.
Analytical and bioanalytical chemistry, 407(20), 6057-6070 (2015-06-10)
The exploration of new chemical entities from herbal medicines may provide candidates for the in silico screening of drug leads. However, this significant work is hindered by the presence of multiple classes of plant metabolites and many re-discovered structures. This
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