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https://www.readbyqxmd.com/read/28316828/crystal-structure-of-%C3%AE-benzyl-dl-aspartate-n-carb-oxyanhydride
#1
Hitoshi Kanazawa, Aya Inada
In the title racemic compound, C12H11NO5 [systematic name: benzyl 2-(2,5-dioxooxazolidin-4-yl)acetate], the oxazolidine ring is planar, with an r.m.s. deviation of 0.03 Å. The benzyl ring is almost normal to the oxazolidine ring, making a dihedral angle of 80.11 (12)°. In the crystal, inversion dimers are formed between the l- and d-enanti-omers via pairs of N-H⋯O hydrogen bonds. This arrangement is favourable for the polymerization of the compound in the solid state. The dimers are linked by C-H⋯O hydrogen bonds, forming layers parallel to the ab plane...
March 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28316800/bis-%C3%AE-benzoato-%C3%AE%C2%BA-2-o-o-bis-benzoato-%C3%AE%C2%BAo-octabutyldi-%C3%AE-3-oxido-tetra-tin-iv
#2
Hans Reuter, Coco K Y A Okio
The asymmetric unit of the title compound, [{Sn(C4H9)2(C6H5COO)}2O]2, consists of two half molecules, completed by application of inversion symmetry. Both mol-ecules adopt a ladder structure typical for this class of dimeric tetra-organodistannoxane di-carboxyl-ates characterized by a centrosymmetric four-membered (Sn-O)2 ring of rhomboidal shape that is extended on both sides by folded six-membered Sn-O-C rings. To a first approximation, both kinds of Sn atoms (Sn i and Sn o ) are trigonal-bipyramidally coordinated...
March 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28288685/ontology-based-literature-mining-of-e-coli-vaccine-associated-gene-interaction-networks
#3
Junguk Hur, Arzucan Özgür, Yongqun He
BACKGROUND: Pathogenic Escherichia coli infections cause various diseases in humans and many animal species. However, with extensive E. coli vaccine research, we are still unable to fully protect ourselves against E. coli infections. To more rational development of effective and safe E. coli vaccine, it is important to better understand E. coli vaccine-associated gene interaction networks. METHODS: In this study, we first extended the Vaccine Ontology (VO) to semantically represent various E...
March 14, 2017: Journal of Biomedical Semantics
https://www.readbyqxmd.com/read/28279669/contribution-of-visuospatial-attention-short-term-memory-and-executive-functions-to-performance-in-number-interval-bisection
#4
Mariagrazia Ranzini, Katia Carbè, Wim Gevers
Number interval bisection consists of estimating the mid-number within a pair (1-9=>5). Healthy adults and right-brain damage patients can show biased performance in this task, underestimating and overestimating the mid-number, respectively. The role of visuospatial attention during this task, and its interplay with other cognitive abilities (e.g., working memory) is still object of debate. In this study we explored the relation between visuospatial attention and individual differences in working memory and executive functions during number interval bisection...
March 6, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28254873/inter-and-intra-observer-agreement-of-fdg-pet-ct-image-interpretation-in-patients-referred-for-assessment-of-cardiac-sarcoidosis
#5
Hiroshi Ohira, Brian Mc Ardle, Robert A deKemp, Pablo B Nery, Daniel Juneau, Jennifer M Renaud, Ran Klein, Owen Clarkin, Karen MacDonald, Eugene Leung, Girish Nair, Rob S B Beanlands, David Birnie
Recent studies have reported the usefulness of (18)F-fluoro-2-deoxyglucose positron emission tomography (FDG-PET) in aiding with the diagnosis and management of patients with cardiac sarcoidosis (CS). However, the image interpretation of FDG-PET for CS is sometimes challenging. We sought to investigate the inter- and intra-observer agreement and explore factors which lead to important discrepancies between readers. METHODS: We studied consecutive patients with no significant coronary artery disease who were referred for assessment of CS...
March 2, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28245965/prevalence-serotyping-and-antimicrobials-resistance-mechanism-of-salmonella-enterica-isolated-from-clinical-and-environmental-samples-in-saudi-arabia
#6
Mohamed A El-Tayeb, Abdelnasser S S Ibrahim, Ali A Al-Salamah, Khalid S Almaary, Yahya B Elbadawi
Salmonella is recognized as a common foodborne pathogen, causing major health problems in Saudi Arabia. Herein, we report epidemiology, antimicrobial susceptibility and the genetic basis of resistance among S. enterica strains isolated in Saudi Arabia. Isolation of Salmonella spp. from clinical and environmental samples resulted in isolation of 33 strains identified as S. enterica based on their biochemical characteristics and 16S-rDNA sequences. S. enterica serovar Enteritidis showed highest prevalence (39...
February 14, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28237518/development-and-validation-of-an-extraction-method-for-the-analysis-of-perfluoroalkyl-substances-in-human-hair
#7
Da-Hye Kim, Jeong-Eun Oh
Human hair has many advantages as a non-invasive sample; however, analytical methods for detecting perfluoroalkyl substances (PFASs) in human hair are still in the development stage. Therefore, the aim of this study was to develop and validate a method for monitoring 11 PFASs in human hair. Solid-phase extraction (SPE), ion-pairing extraction (IPE), a combined method (SPE+IPE) and solvent extraction with ENVI-carb clean-up were compared to develop an optimal extraction method using two types of hair sample (powder and piece forms)...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28217352/crystal-structure-of-a-chloride-bridged-copper-ii-dimer-piperazine-1-4-dium-bis-di-%C3%AE-chlorido-bis-4-carboxypyridine-2-carboxyl-ato-%C3%AE%C2%BA-2-n-o-2-chlorido-cuprate-ii
#8
Bassey Enyi Inah, Ayi Anyama Ayi, Amit Adhikary
Crystals of a new dimeric chloride-bridged cuprate(II) derived from pyridine-2,4-di-carb-oxy-lic acid were obtained solvothermally in the presence of piperazine and hydro-chloric acid. The crystal structure determination of the title salt, (C4H12N2)[Cu2(C7H4NO4)2Cl4], revealed one of the carboxyl groups of the original pyridine-2,4-di-carb-oxy-lic acid ligand to be protonated, whereas the other is deprotonated and binds together with the pyridine N atom to the Cu(II) atom. The coordination environment of the Cu(II) atom is distorted square-pyramidal...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28217334/structural-characterization-of-two-tetra-chlorido-zincate-salts-of-4-carb-oxy-1h-imidazol-3-ium-a-salt-hydrate-and-a-co-crystal-salt-hydrate
#9
Sean J Martens, David K Geiger
Imidazole-containing compounds exhibit a myriad of pharmacological activities. Two tetra-chlorido-zincate salts of 4-carb-oxy-1H-imidazol-3-ium, ImHCO2H(+), are reported. Bis(4-carb-oxy-1H-imidazol-3-ium) tetra-chlorido-zincate monohydrate, (C4H5N2O2)2[ZnCl4]·H2O, (I), crystallizes as a monohydrate salt, while bis-(4-carb-oxy-1H-imidazol-3-ium) tetra-chlorido-zincate bis-(1H-imidazol-3-ium-4-carboxyl-ato) monohydrate, (C4H5N2O2)2[ZnCl4]·2C4H4N2O2·H2O, (II), is a co-crystal salt with six residues: two ImHCO2H(+) cations, two formula units of the zwitterionic 1H-imidazol-3-ium-4-carboxyl-ate, ImHCO2, one tetra-chlorido-zincate anion and one water mol-ecule disordered over two sites in a 0...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28217327/crystal-structure-of-caesium-di-hydrogen-citrate-from-laboratory-x-ray-powder-diffraction-data-and-dft-comparison
#10
Alagappa Rammohan, James A Kaduk
The crystal structure of caesium di-hydrogen citrate, Cs(+)·H2C6H5O7(-), has been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional techniques. The coordination polyhedra of the nine-coordinate Cs(+) cations share edges to form chains along the a-axis. These chains are linked by corners along the c-axis. The un-ionized carb-oxy-lic acid groups form two different types of hydrogen bonds; one forms a helical chain along the c-axis, and the other is discrete...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28217320/crystal-structures-of-two-nickel-compounds-comprising-neutral-ni-ii-hydrazone-complexes-and-di-carb-oxy-lic-acids
#11
Takumi Nakanishi, Osamu Sato
Two isostructural Ni(II) compounds, bis-{N-[1-(pyridin-2-yl-κN)eth-ylidene]pyridine-4-carbohydrazonato-κ(2)N',O}nickel(II)-2,5-di-chloro-terephthalic acid (1/1), [Ni(C13H11N4O)2](C8H4Cl2O4), and bis-{N-[1-(pyridin-2-yl-κN)eth-ylidene]pyridine-4-carbohydrazonato-κ(2)N',O}nickel(II)-2,5-di-bromo-terephthalic acid (1/1), [Ni(C13H11N4O)2](C8H4Br2O4), were synthesized and their crystal structures determined. The pair of N,N',O-tridentate N-[1-(pyridin-2-yl-κN)eth-yl]pyridine-4-carbohydrazonate L ligands result in a cis-NiO2N4 octa-hedral coordination sphere for the metal ions...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28212265/variations-in-oxidative-stress-levels-in-3-days-follow-up-in-ultramarathon-mountain-race-athletes
#12
Ypatios Spanidis, Dimitrios Stagos, Marina Orfanou, Nikolaos Goutzourelas, David Bar-Or, Demetrios Spandidos, Demetrios Kouretas
Spanidis, Y, Stagos, D, Orfanou, M, Goutzourelas, N, Bar-or, D, Spandidos, D, and Kouretas, D. Variations in oxidative stress levels in 3 days follow-up in ultramarathon mountain race athletes. J Strength Cond Res 31(3): 582-594, 2017-The aim of the present study was the monitoring of the redox status of runners participating in a mountain ultramarathon race of 103 km. Blood samples from 12 runners were collected prerace and 24, 48, and 72 hours postrace. The samples were analyzed by using conventional oxidative stress markers, such as protein carbonyls (CARB), thiobarbituric acid reactive substances (TBARS), total antioxidant capacity (TAC) in plasma, as well as glutathione (GSH) levels and catalase (CAT) activity in erythrocytes...
March 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28195006/the-differential-effects-of-high-fat-and-high-fructose-diets-on-physiology-and-behavior-in-male-rats
#13
Lauren Woodie, Sarah Blythe
OBJECTIVES: The purpose of the current study is to directly compare a diet high in fat with a diet high in fructose. This side-by-side comparison will allow us to determine the physiological and behavioral effects resulting from the consumption of a diet dominated by one macronutrient. METHODS: Rats were fed pelletized food containing either 60% fat or 55% fructose diet, or control chow (5.8% kcal of fat, 44.3% kcal carb) for 9 weeks. Animals performed a classic Morris Water Maze (MWM) and a reversal MWM to assess spatial and working memory near the end of the feeding period...
February 14, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28177312/ligand-fitting-with-ccp4
#14
Robert A Nicholls
Crystal structures of protein-ligand complexes are often used to infer biology and inform structure-based drug discovery. Hence, it is important to build accurate, reliable models of ligands that give confidence in the interpretation of the respective protein-ligand complex. This paper discusses key stages in the ligand-fitting process, including ligand binding-site identification, ligand description and conformer generation, ligand fitting, refinement and subsequent validation. The CCP4 suite contains a number of software tools that facilitate this task: AceDRG for the creation of ligand descriptions and conformers, Lidia and JLigand for two-dimensional and three-dimensional ligand editing and visual analysis, Coot for density interpretation, ligand fitting, analysis and validation, and REFMAC5 for macromolecular refinement...
February 1, 2017: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/28148458/impact-of-biodiesel-on-regulated-and-unregulated-emissions-and-redox-and-proinflammatory-properties-of-pm-emitted-from-heavy-duty-vehicles
#15
Georgios Karavalakis, Nicholas Gysel, Debra A Schmitz, Arthur K Cho, Constantinos Sioutas, James J Schauer, David R Cocker, Thomas D Durbin
The emissions and the potential health effects of particulate matter (PM) were assessed from two heavy-duty trucks with and without emission control aftertreatment systems when operating on CARB ultra-low sulfur diesel (ULSD) and three different biodiesel blends. The CARB ULSD was blended with soy-based biodiesel, animal fat biodiesel, and waste cooking oil biodiesel at 50vol%. Testing was conducted over the EPA Urban Dynamometer Driving Schedule (UDDS) in triplicate for both trucks. The aftertreatment controls effectively decreased PM mass and number emissions, as well as the polycyclic aromatic hydrocarbons (PAHs) compared to the uncontrolled truck...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28131671/comparison-of-two-rapid-biochemical-tests-and-four-chromogenic-selective-media-for-detection-of-carbapenemase-producing-gram-negative-bacteria
#16
Vladimira Hinić, Ivo Amrein, Sabrina Stammler, Judith Heckendorn, Dominik Meinel, Reno Frei, Adrian Egli
We evaluated RAPIDEC® CARBA NP, Neo-Rapid CARB, chromID® CARBA SMART (CARB/OXA), Brilliance™ CRE/ESBL, ChromArt CRE and BBL™ CHROMagar™ CPE for the detection of carbapenemase-producing bacteria. The analytical sensitivity of RAPIDEC® CARBA NP was better than that of Neo-Rapid CARB. A combination of carbapenemase and ESBL screening plates could be advantageous.
January 25, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28050905/detailed-analysis-of-criteria-and-particle-emissions-from-a-very-large-crude-carrier-using-a-novel-eca-fuel
#17
Nicholas R Gysel, William A Welch, Kent Johnson, Wayne Miller, David R Cocker
Ocean going vessels (OGVs) operating within emission control areas (ECA) are required to use fuels with ≤0.1 wt % sulfur. Up to now only distillate fuels could meet the sulfur limits. Recently refiners created a novel low-sulfur heavy-fuel oil (LSHFO) meeting the sulfur limits so questions were posed whether nitric oxide (NOx) and particulate matter (PM) emissions were the same for the two fuels. This project characterized criteria pollutants and undertook a detailed analysis of PM emissions from a very large crude oil carrier (VLCC) using a distillate ECA fuel (MGO) and novel LSHFO...
February 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28045649/cost-effectiveness-of-pemetrexed-in-combination-with-cisplatin-as-first-line-treatment-for-patients-with-advanced-non-squamous-non-small-cell-lung-cancer-in-spain
#18
Jonathan González García, Fernando Gutiérrez Nicolás, Gloria Julia Nazco Casariego, Cristina Valcárcel Nazco, Jose Norberto Batista López, Juana Oramas Rodríguez
INTRODUCTION: Lung cancer is the third most frequent neoplastic tumour in Spain, with around 27 000 new cases diagnosed per year; 80-95% of these are non-small-cell cancer (NSCLC), and the majority of cases are diagnosed in advanced stages of the disease, and for this reason it is one of the oncologic conditions with higher mortality rates (21.4% mean survival at 5 years). The main treatment regimens used for first-line treatment of NSCLC are: cisplatin/pemetrexed (cis/pem), cisplatin/gemcitabine/ bevacizumab (cis/gem/bev), and carboplatin/paclitaxel/ bevacizumab (carb/pac/bev)...
January 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/27986586/evaluation-of-carbohydrate-restriction-as-primary-treatment-for-post-gastric-bypass-hypoglycemia
#19
Jorick van Meijeren, Ilse Timmer, Hans Brandts, Ignace Janssen, Hans de Boer
BACKGROUND: Up to 15% of patients who have undergone Roux-en-Y gastric bypass (RYGB) surgery may eventually develop symptoms of hypoglycemia. OBJECTIVES: To evaluate the daily life efficacy of a carbohydrate (carb)-restricted dietary advice (CRD) of 6 meals per day with a 30 g carb maximum per meal in patients with documented post-RYGB hypoglycemia. SETTING: Teaching hospital, the Netherlands. METHODS: Frequency and severity of hypoglycemic events before and after CRD were assessed retrospectively in 41 patients with documented post-RYGB hypoglycemia, based on medical records and telephone questionnaires...
November 5, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/27984656/the-toxicity-and-efficacy-of-concomitant-chemoradiotherapy-in-patients-aged-70-years-and-older-with-oropharyngeal-carcinoma-in-the-intensity-modulated-radiotherapy-era
#20
Zachary S Zumsteg, Benjamin H Lok, Allen S Ho, Esther Drill, Zhigang Zhang, Nadeem Riaz, Stephen L Shiao, Jennifer Ma, Sean M McBride, C Jillian Tsai, Shrujal S Baxi, Eric J Sherman, Nancy Y Lee
BACKGROUND: Despite controversy surrounding its benefit, the use of concomitant chemoradiotherapy (CCRT) in patients with oropharyngeal squamous cell carcinoma (OPSCC) who are aged > 70 years is increasing. However, to the authors' knowledge, few studies to date have compared the outcomes of different systemic treatments in this population. METHODS: Records from 74 patients aged ≥ 70 years with stage III to stage IVB OPSCC who were undergoing CCRT from 2002 to 2013 at a single institution were reviewed...
December 16, 2016: Cancer
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