keyword
MENU ▼
Read by QxMD icon Read
search

ethyl sulfate

keyword
https://www.readbyqxmd.com/read/28917670/morphological-characterization-and-biocontrol-effects-of-vibrio-vulnificus-phages-against-vibriosis-in-the-shrimp-aquaculture-environment
#1
P Srinivasan, P Ramasamy
The re-emerging field of phage therapy is the potential biocontrol agents for the transfer of virulence factor and to kill their bacterial hosts. In this study, the lytic Vibrio vulnificus phages were studied to provide a better understanding of phage-host interactions and development of phage therapy. Four new V. vulnificus phages were detected from shrimp aquaculture system, named VV1, VV2, VV3 and VV4. All lytic V. vulnificus phages are the Tecviruses of the family Tectiviridae with typical double layered elongated icosahedral head and tailless morphology...
September 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28855472/analytical-method-for-nitroimidazoles-and-their-major-metabolites-in-livestock-and-fishery-products-using-lc-ms-ms
#2
Takatoshi Sakai, Satoru Nemoto, Reiko Teshima, Hiroshi Akiyama
A sensitive and reliable method for the simultaneous determination of four nitroimidazoles (ipronidazole (IPZ), dimetridazole (DMZ), metronidazole (MNZ) and ronidazole (RNZ)) and three metabolites (IPZ-OH, MNZ-OH and 2-hydroxymethyl-1-methyl-5-nitroimidazole (HMMNI)) in livestock and fishery products was developed. The analytes were extracted from samples with acetone containing acetic acid. The crude extracts were defatted by liquid-liquid partition using acetonitrile and n-hexane followed by solid-phase extraction using a cartridge column packed with divinylbenzene-N-vinylpyrolidone copolymer bearing sulfo groups...
2017: Shokuhin Eiseigaku Zasshi. Journal of the Food Hygienic Society of Japan
https://www.readbyqxmd.com/read/28852244/value-of-ethyl-glucuronide-and-ethyl-sulfate-in-serum-as-biomarkers-of-alcohol-consumption
#3
Lekhansh Shukla, Priyamvada Sharma, Suhas Ganesha, Deepak Ghadigaonkar, Evan Thomas, Arun Kandasamy, Pratima Murthy, Vivek Benegal
BACKGROUND: Urinary Ethyl glucuronide (EtG) and Ethyl sulfate (EtS) are established markers of alcohol conumption. Measurement of these markers in serum offers certain advantages. This outpatient department based study evaluated performance of serum Ethyl glucuronide (EtG) and Ethyl sulphate (EtS) as biomarkers of recent alcohol consumption in alcohol dependent subjects. It also evaluated effect of alcohol dose and time since consumption on serum EtG and EtS concentration. METHODS: Information regarding alcohol intake was collected using Time line follow back calendar method from 152 subjects...
July 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28821307/determination-of-residues-of-diazinon-and-chlorpyrifos-in-lavender-and-rosemary-leaves-by-gas-chromatography
#4
Mamdouh R Rezk, Abd El-Aziz B Abd El-Aleem, Shaban M Khalile, Omneya K El-Naggar
A sensitive gas chromatographic (GC) GC method has been developed for the determination of diazinon and chlorpyrifos residues in lavender and rosemary leaves. The developed method consists of blending weighed samples of chopped leaves with sodium sulfate as the dehydrating agent, extraction with ethyl acetate, filtration, evaporation with a rotary evaporator, and, finally, capillary GC determination of the pesticides. The recoveries of the method were greater than 90%, and the LOQ was less than 0.1 µg/mL...
August 18, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28767237/heterogeneous-organophosphate-ethanolysis-degradation-of-phosphonothioate-neurotoxin-by-a-supported-molybdenum-peroxo-polymer
#5
Louis Y Kuo, Andrew Bennett, Qianli Miao
A polystyrene-supported molybdenum peroxo material [Mo-Y(s)] was applied toward the oxidative degradation of the organophosphate neurotoxin O,S-diethylphenyl phosphonothioate (1) through ethanolysis. In addition to the operational advantages of the heterogeneous reactivity, oxidative ethanolysis with a 10-fold excess of hydrogen peroxide yields only P-S bond scission to produce diethylphenyl phosphonate and ethyl sulfate. This is the first report of a molybdenum solid support that promotes the degradation of sulfur-containing organophosphate with the turnover benefits of heterogeneous catalysis...
August 2, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28762331/quantitative-determination-of-synthesized-genotoxic-impurities-in-nifuroxazide-capsules-by-validated-chromatographic-methods
#6
Nada S Abdelwahab, Nouruddin W Ali, Marco M Zaki, M Abdelkawy, Mohammed T El-Saadi
Two accurate, selective, and precise chromatographic methods, namely TLC-densitometric and reversed-phase (RP)-HPLC, were developed and validated for the simultaneous determination of nifuroxazide (NIF) and its four synthesized impurities, which are also reported to be its related substances in the range of 10–100 μg/band and 10–100 μg/mL for NIF in the TLC and RP-HPLC methods, respectively. The developed TLC-densitometric method depended on the separation and quantitation of the studied components on silica gel 60 F254 TLC plates...
July 31, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28762065/lc-high-resolution-ms-ms-for-identification-of-69-metabolites-of-the-new-psychoactive-substance-1-4-ethylphenyl-n-2-methoxyphenyl-methyl-propane-2-amine-4-ea-nbome-in-rat-urine-and-human-liver-s9-incubates-and-comparison-of-its-screening-power-with-further
#7
Achim T Caspar, Folker Westphal, Markus R Meyer, Hans H Maurer
4-EA-NBOMe (N-(2-methoxybenzyl)-4-ethylamphetamine, 1-(4-ethylphenyl-)-N-[(2-methoxyphenyl)methyl]propane-2-amine) is an amphetamine-derived new psychoactive substance (NPS) of the N-methoxybenzyl (NBOMe) group first seized by German custom authorities. In contrast to the phenethylamine NBOMes, studies on the pharmacological, toxicological, or metabolic properties are not yet published. The aims of the presented work were the use of LC-HR-MS/MS for identification of the phase I and II metabolites of 4-EA-NBOMe in rat urine and pooled human S9 fraction (pS9) incubations, to compare metabolite formation in both models, to identify involved monooxygenases, and to elucidate its detectability in standard urine screening approaches (SUSAs) using GC-MS, LC-MS(n), and LC-HR-MS/MS...
July 31, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28741862/in-vivo-comparison-of-jellyfish-and-bovine-collagen-sponges-as-prototype-medical-devices
#8
Jonathan P Widdowson, Alex J Picton, Valerie Vince, Chris J Wright, Andrew Mearns-Spragg
Jellyfish have emerged as a source of next generation collagen that is an attractive alternative to existing sources, such as bovine and porcine, due to a plentiful supply and providing a safer source through lack of bovine spongiform encephalopathy (BSE) transmission risk and potential viral vectors, both of which could be transmitted to humans. Here we compare collagen implantable sponges derived for the first time from the Rhizostoma pulmo jellyfish. A further novelty for the research was that there was a comparison for sponges that were either uncrosslinked or crosslinked using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC), and an assessment on how this affected resorption, as well as their biocompatibility compared to bovine type I collagen sponges...
July 25, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28728424/annals-express-false-negative-results-in-the-immunoassay-analysis-of-drugs-of-abuse-can-adulterants-be-detected-by-sample-check-test
#9
Barbara Matriciani, Bernd Huppertz, Ruprecht Keller, Ralf Weiskirchen
BACKGROUND: The dilution or adulteration of urine is a serious problem in drugs of abuse (DOA) testing. Tests to identify adulteration are currently available. This study investigated the ability of the CEDIA® sample check to detect adulteration. METHODS: Eight different DOAs were added to a urine sample obtained from a healthy, drug free subject: 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine, 3,4-methylenedioxyamphetamine, benzoylecgonine, D-amphetaminesulfate, ethyl-D-glucuronide, morphine sulfate, oxazepam, (-)-11-nor-9-carboxy-∆(9)-tetrahydrocannabinol...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28699536/supramolecular-self-assembled-nanogels-a-new-platform-for-anticancer-drug-delivery
#10
Jaleh Varshosaz, Somayeh Taymouri, Erfaneh Ghassami
Polymer micellar nanogels are a group of core-shell polymeric micelles with swelling properties in aqueous media. Nanogel systems have proven their potential in controlled, sustained and targetable drug delivery area with no immunological responses. This review includes a comprehensive wide range of self-assembly of polymeric nanogels as delivery systems for anticancer drugs. Nanogels are nanoparticulate drug delivery systems which are specially designed for enhanced target oriented and cellular uptake of drugs with emphasis on chemotherapeutic agents studied in this review...
July 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28692891/degradation-studies-of-quizalofop-p-and-related-compounds-in-soils-using-liquid-chromatography-coupled-to-low-and-high-resolution-mass-analyzers
#11
Rosalía López-Ruiz, Roberto Romero-González, José Luis Martínez Vidal, Manuel Fernández-Pérez, Antonia Garrido Frenich
A comprehensive degradation study of quizalofop-p, quizalofop-p-ethyl, quizalofop-p-tefuryl and propaquizafop in soil samples have been firstly performed using ultra high performance liquid chromatography coupled to Orbitrap mass spectrometry (UHPLC-Orbitrap-MS). Thus, metabolites or degradation products, such as CHHQ (dihydroxychloroquinoxalin), CHQ (6-chloroquinoxalin-2-ol), PPA ((R)-2-(4-hydroxyphenoxy)propionic acid) and 2,3-dihydroxyquinoxaline were also monitored. An extraction procedure based on QuEChERS procedure was used...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28688172/potential-impact-of-the-sewer-system-on-the-applicability-of-alcohol-and-tobacco-biomarkers-in-wastewater-based-epidemiology
#12
Andrew P W Banks, Foon Yin Lai, Jochen F Mueller, Guangming Jiang, Steve Carter, Phong K Thai
Understanding the actual consumption of alcohol and tobacco in the population is important for forming public health policy. For this purpose, wastewater-based epidemiology has been applied as a complementary method to estimate the overall alcohol and tobacco consumption in different communities. However, the stability of their consumption biomarkers, ethyl sulfate, ethyl glucuronide, cotinine and trans-3'-hydroxycotinine, in the sewer system has not yet been assessed. This study aimed to conduct such assessment using sewer reactors mimicking conditions of rising main, gravity sewer and wastewater alone, over a 12-hour period...
July 8, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28685869/biomarkers-of-the-alcohol-hangover-state-ethyl-glucuronide-etg-and-ethyl-sulfate-ets
#13
Marlou Mackus, Aurora J A E van de Loo, S Jorinde Raasveld, Anna Hogewoning, Javier Sastre Toraño, Frits M Flesch, Gerdien A H Korte-Bouws, Renier H P van Neer, Xiaochun Wang, Thomas T Nguyen, Karel A Brookhuis, Aletta D Kraneveld, Johan Garssen, Joris C Verster
INTRODUCTION: The aim of this study was to investigate the usefulness of ethyl glucuronide (EtG) and ethyl sulfate (EtS) as biomarkers of the hangover state. METHODS: Thirty-sixhealthy social drinkers participated in this study, being of naturalistic design. Eighteen participants experience regular hangovers (the hangover group), whereas the other 18 claim to not experience a hangover (the hangover-immune group). On a control day (alcohol-free) day and a post-alcohol day, urine EtG and EtS concentrations were determined and hangover severity assessed...
July 6, 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28671321/the-influence-of-small-doses-of-ethanol-on-the-urinary-testosterone-to-epitestosterone-ratio-in-men-and-women
#14
Sami Albeiroti, Brian D Ahrens, Timofei Sobolevskii, Anthony W Butch
Endogenous steroid use can increase urinary testosterone/epitestosterone (T/E) values. In addition, ethanol in amounts >0.5 g per kg of body weight (g/kg) can also increase T/E values. However, the effect of smaller doses of ethanol on T/E values is unknown. The influence of 0.2 and 0.4 g/kg of ethanol on baseline T/E values in 20 men and 20 women with low and high baseline T/E values was investigated and correlated with ethyl glucuronide (EtG) and ethyl sulfate (EtS) concentrations. T/E values for 7 of the women were excluded from the study because of undetectable T concentrations or for other reasons...
July 3, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28658739/targeted-screening-and-safety-evaluation-of-276-agrochemical-residues-in-raisins-using-buffered-ethyl-acetate-extraction-and-liquid-chromatography-tandem-mass-spectrometry-analysis
#15
T P Ahammed Shabeer, Manjusha Jadhav, Rushali Girame, Sandip Hingmire, Aarti Bhongale, Anjali Pudale, Kaushik Banerjee
A buffered ethyl acetate extraction method was optimized and validated in raisin matrix to monitor 276 pesticides by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. The final method involved homogenization of raisinsalong with water 1:1 raisins: water followed by extraction using ethyl acetate (10 mL/10 g raisins homogenate in presence of 0.1 mL acetic acid, 0.5 g sodium acetate and 10 g sodium sulfate, and cleanup by dispersive solid phase extraction with primary secondary amine sorbent (25 mg/5 mL extract)...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28539735/pharmacognostic-specification-chlorogenic-acid-content-and-in-vitro-antioxidant-activities-of-lonicera-japonica-flowering-bud
#16
Chayanon Chaowuttikul, Chanida Palanuvej, Nijsiri Ruangrungsi
BACKGROUND: Lonicera japonica Thunb. or Japanese Honeysuckle has been widely used in traditional medicine for antipyretic. OBJECTIVE: To establish the pharmacognostic specification of L. japonica flowering bud in Thailand and to determine its chlorogenic acid content and in vitro antioxidant activities. MATERIALS AND METHODS: Dried L. japonica flowering bud from 15 various herbal drugstores throughout Thailand were investigated for pharmacognostic specification...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28534923/divergent-syntheses-of-iodinated-isobenzofuranones-and-isochromenones-by-iodolactonization-of-2-alkynylbenzoic-acids-in-ionic-liquids
#17
Raffaella Mancuso, Christian C Pomelli, Francesco Malafronte, Asif Maner, Nadia Marino, Cinzia Chiappe, Bartolo Gabriele
The regiochemical outcome of the iodolactonization of 2-alkynylbenzoic acids, carried out at 100 °C in ionic liquids (ILs) as unconventional solvents and with molecular iodine as the iodine source, in the absence of external bases, was found to be strongly dependent on the nature of the IL medium. In particular, while the use of N-ethyl-N-methylmorpholinium dicyanamide (Mor1,2N(CN)2) promoted the stereoselective formation of (E)-3-(iodomethylene)isobenzofuran-1(3H)-ones, through an anti-5-exo-dig cyclization route, the use of 1-ethyl-3-methylimidazolium ethyl sulfate (EmimEtSO4) tended to favor the 6-endo-dig cyclization mode, with preferential or selective formation of 4-iodo-1H-isochromen-1-ones...
June 7, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28458298/biological-activities-and-antibacterial-biomarker-of-sesbania-grandiflora-bark-extract
#18
Pimporn Anantaworasakul, Hiroshi Hamamoto, Kazuhisa Sekimizu, Siriporn Okonogi
In the present study, the fractionated extracts of Sesbania grandiflora bark were prepared and evaluated for their biological activities. The ethyl acetate fractionate (EAF) showed high antioxidant activity along with free radical scavenging and reducing mechanisms. The free radical scavenging antioxidant activity of EAF was 69.3 ± 3.6% where its Trolox equivalent antioxidant capacity was 13.6 ± 0.7 mM/mg. EAF exhibited the reducing power equivalent to ferrous sulfate at 152 ± 2 mM/mg and equivalent to gallic acid at 1...
May 30, 2017: Drug Discoveries & Therapeutics
https://www.readbyqxmd.com/read/28453638/etg-ets-in-serum-by-uhplc-ms-ms-in-suspected-sexual-assault-cases
#19
Solfrid Hegstad, Arne Helland, Cecilie Hagemann, Olav Spigset
A method including semi-automated extraction of ethyl glucuronide (EtG) and ethyl sulfate (EtS) from serum followed by ultra-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS-MS) has been developed and validated. Sample preparation prior to UHPLC-MS-MS analysis consisted of protein precipitation and filtration through a phospholipid removal plate. Chromatography was achieved using an HSS T3 column and gradient elution with formic acid in water in combination with methanol. The mass spectrometer was monitored in the negative mode with multiple reaction monitoring...
September 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28447183/optical-and-photophysical-investigation-of-2e-1-2-5-dimethylfuran-3-yl-3-9-ethyl-9h-carbazol-3-yl-prop-2-en-1-one-depo-by-spectrofluorometer-in-organized-medium
#20
Abdullah M Asiri, Al-Anood M Al-Dies, Salman A Khan
(2E)-1-(2,5-dimethylfuran-3-yl)-3-(9-ethyl-9H-carbazol-3-yl)prop-2-en-1-one (DEPO) was prepared by the reaction of 9-ethyl-9H-carbazole-3-carbaldehyde with 1-(2,5-dimethylfuran-3-yl)ethanone under microwave irradiation. The structure of DEPO was established experimentally by EI-MS, FT-IR, (1)H and (13)C NMR spectral studies. Electronic absorption and emission spectra of DEPO were studied in different solvents on the basis of polarities, and the obtain data were used to determine the solvatochromic properties such as extinction coefficient, oscillator strength, transition dipole moment, stokes shift, fluorescence quantum yield and photochemical quantum yield...
April 26, 2017: Journal of Fluorescence
keyword
keyword
72151
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"