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https://www.readbyqxmd.com/read/27922792/wound-bed-preparation-a-novel-approach-using-hydrotherapy
#1
Leanne Atkin, Karen Ousey
Wounds that fail to heal quickly are often encountered by community nursing staff. An important step in assisting these chronic or stalled wounds progress through healing is debridement to remove devitalised tissue, including slough and eschar, that can prevent the wound from healing. A unique wound treatment called HydroTherapy aims to provide an optimal healing environment. The first step of HydroTherapy involves HydroClean plus™, this dressing enables removal of devitalised tissue through autolytic debridement and absorption of wound fluid...
December 2016: British Journal of Community Nursing
https://www.readbyqxmd.com/read/27922249/severe-hyperphosphatemia-after-oral-laxative-administration-in-a-7-year-old-patient
#2
Çağlar Ödek, Tanıl Kendirli, Ayhan Yaman, Eda Didem Kurt-Şükür, Onur Telli, Berk Burgu, Z Birsin Özçakar
Sodium phosphate based laxatives are commonly used for constipation and pre-procedural bowel cleansing. Phosphate intoxication related with these preparations is well recognized. Herein, we present a case of severe hyperphosphatemia and seizure in a 7-year-old male patient after administration of an oral sodium phosphate based laxative. At the time of admission, serum phosphorus level was 25.6 mg/dl. Aggressive fluid therapy was started. Although serum phosphorus level decreased to 20.9 mg/dl eight hours after admission, hemodialysis was performed because of the preexisting renal disease and declined glomerular filtration rate...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27922097/arctic-megaslide-at-presumed-rest
#3
Wolfram H Geissler, A Catalina Gebhardt, Felix Gross, Jutta Wollenburg, Laura Jensen, Mechita C Schmidt-Aursch, Sebastian Krastel, Judith Elger, Giacomo Osti
Slope failure like in the Hinlopen/Yermak Megaslide is one of the major geohazards in a changing Arctic environment. We analysed hydroacoustic and 2D high-resolution seismic data from the apparently intact continental slope immediately north of the Hinlopen/Yermak Megaslide for signs of past and future instabilities. Our new bathymetry and seismic data show clear evidence for incipient slope instability. Minor slide deposits and an internally-deformed sedimentary layer near the base of the gas hydrate stability zone imply an incomplete failure event, most probably about 30000 years ago, contemporaneous to or shortly after the Hinlopen/Yermak Megaslide...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921106/quantum-and-classical-inter-cage-hopping-of-hydrogen-molecules-in-clathrate-hydrate-temperature-and-cage-occupation-effects
#4
Christian J Burnham, Zdenek Futera, Niall J English
Building on our previous work (J. Phys. Chem. C, 2016, 120, 16561), using an empirical model we run both classical and path-integral molecular dynamics simulations for a type II clathrate hydrate containing different amounts of guest H2 molecules from 1 to 5 molecules per large cage, with results presented at temperatures of 50, 100 K and 200 K. We present results for the density isosurfaces of the guest molecules at all different occupations and temperatures, showing how the density approaches the perfect tetrahedral structure which has been found for the n = 4 case in which each molecule sits on the vertex of a tetrahedron about the centre of each large cage...
December 6, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27920934/crystal-structure-of-3-2-hy-droxy-eth-yl-2-methyl-sulfanyl-6-nitro-3h-benzimidazol-1-ium-chloride-monohydrate
#5
Akoun Abou, Siomenan Coulibali, Rita Kakou-Yao, T Jérémie Zoueu, A Jules Tenon
In the cation of the title hydrated molecular salt, C10H12N3O3S(+)·Cl(-)·H2O, the benzimidazolium ring system is almost planar (r.m.s. deviation = 0.006 Å) and the nitro group is inclined at an angle of 4.86 (9)° to this plane. In the crystal, C-H⋯O hydrogen bonds form centrosymmetric R2(2)(20) dimers and these are further aggregated through N-H⋯O and O-H⋯Cl hydrogen bonds involving the water mol-ecules and chloride anions. Aromatic π-π stacking inter-actions are also found between two parallel benzene rings or the benzene and imidazolium rings, with centroid-centroid distances of 3...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920933/crystal-structure-of-1-3-bis-3-tert-butyl-2-hy-droxy-5-methyl-benz-yl-1-3-diazinan-5-ol-monohydrate
#6
Augusto Rivera, Ingrid Miranda-Carvajal, Jaime Ríos-Motta, Michael Bolte
In the title hydrate, C28H42N2O3·H2O, the central 1,3-diazinan-5-ol ring adopts a chair conformation with the two benzyl substituents equatorial and the lone pairs of the N atoms axial. The dihedral angle between the aromatic rings is 19.68 (38)°. There are two intra-molecular O-H⋯N hydrogen bonds, each generating an S(6) ring motif. In the crystal, classical O-H⋯O hydrogen bonds connect the 1,3-diazinane and water mol-ecules into columns extending along the b axis. The crystal structure was refined as a two-component twin with a fractional contribution to the minor domain of 0...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920929/crystal-structure-of-methyl-4-4-hy-droxy-phen-yl-6-methyl-2-oxo-1-2-3-4-tetra-hydro-pyrimidine-5-carboxyl-ate-monohydrate
#7
Keshab M Bairagi, Katharigatta N Venugopala, Pradip Kumar Mondal, Bharti Odhav, Susanta K Nayak
The title hydrate, C13H14N2O4·H2O, crystallizes with two formula units in the asymmetric unit (Z' = 2). The dihedral angles between the planes of the tetra-hydro-pyrimidine ring and the 4-hy-droxy-phenyl ring and ester group are 86.78 (4) and 6.81 (6)°, respectively, for one mol-ecule and 89.35 (4) and 3.02 (4)° for the other. In the crystal, the organic mol-ecules form a dimer, linked by a pair of N-H⋯O hydrogen bonds. The hydroxy groups of the organic mol-ecules donate O-H⋯O hydrogen bonds to water mol-ecules...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920927/synthesis-and-crystal-structure-of-e-2-e-4-hy-droxynaphthalen-1-yl-methyl-idene-hydrazin-1-yl-methyl-sulfan-yl-methyl-idene-azanium-hydrogen-sulfate-monohydrate
#8
Oussama Nehar, Samira Louhibi, Leila Boukli-Hacene, Thierry Roisnel
In the title hydrated mol-ecular salt, C13H14N3S(+)·HSO4(-)·H2O, the protonation of the azomethine N atom in sulfuric acid medium involves the formation of the bis-ulfate anion. The mol-ecular structure of the cation is obtained from the thiol tautomer of thio-semicarbazone wherein the naphthalene moiety and the conjugation of the bonds contribute to the planarity of the mol-ecular skeleton. In the crystal, the cation, anion and water mol-ecule of crystallization are linked by a series of O-H⋯O and N-H⋯O hydrogen bonds, forming a three-dimensional network...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920913/crystal-structure-of-aqua-tris-isonicotinamide-%C3%AE%C2%BAn-bis-thio-cyanato-%C3%AE%C2%BAn-cobalt-ii-2-5-hydrate
#9
Tristan Neumann, Inke Jess, Christian Näther
The asymmetric unit of the title compound, [Co(NCS)2(C6H6N2O)3(H2O)]·2.5H2O, comprises one Co(II) cation, three isonicotinamide ligands, two thio-cyanate anions, one aqua ligand and two water solvent mol-ecules in general positions, as well as one water solvent mol-ecule that is located on a twofold rotation axis. The Co(II) cations are octa-hedrally coordinated by two terminally N-bonded thio-cyanate anions, one water mol-ecule and three isonicotinamide ligands, each coordinating via the pyridine N atom. The discrete complexes are linked by inter-molecular O-H⋯O, N-H⋯O and N-H⋯S hydrogen bonding into a three-dimensional network that contains cavities in which the solvent water mol-ecules are located...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920908/crystal-structure-of-tris-4-4-bi-pyridine-diium-bis-1-1-3-3-tetra-cyano-2-eth-oxy-propenide-trihydrate
#10
Fatima Setifi, Arto Valkonen, Zouaoui Setifi, Sami Nummelin, Rachid Touzani, Christopher Glidewell
The title hydrated salt, C30H26N6(2+)·2C9H5N4O(-)·3H2O, was obtained as an unexpected product from the hydro-thermal reaction between potassium 1,1,3,3-tetra-cyano-2-eth-oxy-propenide, 4,4'-bi-pyridine and iron(II) sulfate hepta-hydrate. The cation lies across a twofold rotation axis in the space group I2/a with the other components all in general positions. In the cation, the H atom linking the pyridine units is disordered over two adjacent sites having occupancies of 0.66 (4) and 0.36 (4), i.e. as N-H⋯N and N⋯H-N...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920825/evaluation-of-cardioprotective-effect-of-aqueous-extract-of-allium-cepa-linn-bulb-on-isoprenaline-induced-myocardial-injury-in-wistar-albino-rats
#11
Geeta B Kharadi, Kaksha J Patel, Bhargav M Purohit, Seema N Baxi, C B Tripathi
To investigate the cardioprotective potential of the aqueous extract of Allium cepa Linn. bulb in isoprenaline-induced myocardial injury in Wistar albino rats. In vitro total phenolic, total flavonoid content and 2, 2'-diphenyl-1-picrylhydrazyl hydrate radical scavenging activity was measured. Isoprenaline-induced myocardial injury model was used to evaluate in vivo effect of aqueous extract of A. cepa in Wistar albino rats. Seventy two rats were randomly divided in 6 groups. Rats were treated with A. cepa 400 mg/kg and 800 mg/kg doses for 30 days and myocardial injury was produced by subcutaneous injection of isoprenaline (ISO) 85 mg/kg on day 28 and 29...
October 2016: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27919736/effect-of-morin-5-sulfonic-acid-sodium-salt-on-the-expression-of-apoptosis-related-proteins-caspase-3-bax-and-bcl-2-due-to-the-mercury-induced-oxidative-stress-in-albino-rats
#12
Rantham Subramaniam Venkatesan, Abdul Majeeth Mohamed Sadiq
Many environmental contaminants have been reported to disturb the pro-oxidant or antioxidant balance of the cells by inducing oxidative stress. Oxidative stress mediated by the HgCl2 induces DNA, protein and lipid oxidation resulted in necrosis or apoptosis, or both. Currently flavonoids are being emerging topic and reported to have antiviral, anti-inflammatory, anti- tumor and antioxidant activities. Morin is one of the flavonoid protects the cells from oxygen free radical damage and scavenges the free radicals and metals and also heals the injured cells commercially...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27918439/phenols-and-polyphenols-as-carbonic-anhydrase-inhibitors
#13
REVIEW
Anastasia Karioti, Fabrizio Carta, Claudiu T Supuran
Phenols are among the largest and most widely distributed groups of secondary metabolites within the plant kingdom. They are implicated in multiple and essential physiological functions. In humans they play an important role as microconstituents of the daily diet, their consumption being considered healthy. The physical and chemical properties of phenolic compounds make these molecules versatile ligands, capable of interacting with a wide range of targets, such as the Carbonic Anhydrases (CAs, EC 4.2.1.1). CAs reversibly catalyze the fundamental reaction of CO₂ hydration to bicarbonate and protons in all living organisms, being actively involved in the regulation of a plethora of patho/physiological processes...
December 2, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27918027/why-do-proton-conducting-polybenzimidazole-phosphoric-acid-membranes-perform-well-in-high-temperature-pem-fuel-cells
#14
Jan-Patrick Melchior, Günter Majer, Klaus-Dieter Kreuer
Transport properties and hydration behavior of phosphoric acid/(benz)imidazole mixtures are investigated by diverse NMR techniques, thermogravimetric analysis (TGA) and conductivity measurements. The monomeric systems can serve as models for phosphoric acid/poly-benzimidazole membranes which are known for their exceptional performance in high temperature PEM fuel cells. (1)H- and (31)P-NMR data show benzimidazole acting as a strong Brønsted base with respect to neat phosphoric acid. Since benzimidazole's nitrogens are fully protonated with a low rate for proton exchange with phosphate species, proton diffusion and conduction processes must take place within the hydrogen bond network of phosphoric acid only...
December 5, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27918026/infrared-dynamics-study-of-thermally-treated-perfluoroimide-acid-proton-exchange-membranes
#15
L Puskar, E Ritter, U Schade, M Yandrasits, S J Hamrock, M Schaberg, E F Aziz
The temperature induced dehydration process of the 3M Brand perfluoroimide acid (PFIA), an advanced proton exchange membrane for fuel cells, was studied by in situ infrared spectroscopy to understand proton transport processes under conditions of low hydration levels. A comprehensive assignment of the vibrational bands of PFIA in the mid infrared region is provided. Investigation of the kinetics in conjunction with 2D correlation spectroscopy methods revealed the sequential process of the hydration and dehydration in a conclusive model...
December 5, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27917925/direct-synthesis-of-hydrogen-peroxide-from-plasma-water-interactions
#16
Jiandi Liu, Bangbang He, Qiang Chen, Junshuai Li, Qing Xiong, Guanghui Yue, Xianhui Zhang, Size Yang, Hai Liu, Qing Huo Liu
Hydrogen peroxide (H2O2) is usually considered to be an important reagent in green chemistry since water is the only by-product in H2O2 involved oxidation reactions. Early studies show that direct synthesis of H2O2 by plasma-water interactions is possible, while the factors affecting the H2O2 production in this method remain unclear. Herein, we present a study on the H2O2 synthesis by atmospheric pressure plasma-water interactions. The results indicate that the most important factors for the H2O2 production are the processes taking place at the plasma-water interface, including sputtering, electric field induced hydrated ion emission, and evaporation...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917571/comparative-germination-responses-to-water-potential-across-different-populations-of-aegilops-geniculata-and-cultivar-varieties-of-triticum-durum-and-t-aestivum
#17
Simone Orsenigo, Filippo Guzzon, Thomas Abeli, Graziano Rossi, Ilda Vagge, Alma Balestrazzi, Andrea Mondoni, Jonas V Müller
Crop Wild Relatives (CWRs) are often used to improve crop quality and yields, because they contain genetically important traits that can contribute to stress resistance and adaptation. Here, seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf...
December 5, 2016: Plant Biology
https://www.readbyqxmd.com/read/27916697/composition-dependent-structural-changes-and-antitumor-activity-of-asc-dp-dspe-peg-nanoparticles
#18
Kenjirou Higashi, Fusako Mibu, Kengo Saito, Waree Limwikrant, Keiji Yamamoto, Kunikazu Moribe
Ascorbyl 2,6-dipalmitate (ASC-DP) and distearoyl phosphatidylethanolamine polyethylene glycol 2000 (DSPE-PEG) formed stable nanoparticles at a molar ratio of less than or equal to 2:1 after dispersing the solvent-evaporated film in water. The mean particle sizes measured by dynamic light scattering were within the range of ca. 100-160nm. Composition-dependent changes of the ASC-DP and DSPE-PEG molecular states within the film were analyzed by wide-angle X-ray diffraction and infrared (IR) and solid-state nuclear magnetic resonance (NMR) spectroscopy...
December 1, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27914949/anion-inhibition-profiles-of-the-%C3%AE-carbonic-anhydrase-from-the-pathogenic-bacterium-burkholderia-pseudomallei-responsible-of-melioidosis-and-highly-drug-resistant-to-common-antibiotics
#19
Sonia Del Prete, Daniela Vullo, Pietro Di Fonzo, Sameh M Osman, Zeid AlOthman, Claudiu T Supuran, Clemente Capasso
Burkholderia pseudomallei is a Gram-negative saprophytic bacterium responsible of melioidosis, an endemic disease of tropical and sub-tropical regions of the world. A recombinant γ-CA (BpsγCA) identified in the genome of this bacterium was cloned and purified. Its catalytic activity and anion inhibition profiles were investigated. The enzyme was an efficient catalyst for the CO2 hydration showing a kcat of 5.3×10(5)s(-1) and kcat/Km of 2.5×10(7)M(-1)×s(-1). The best BpsγCA inhibitors were sulfamide, sulfamic acid, phenylboronic acid and phenylarsonic acid, which showed KI in the range of 49-83μM (these inhibitors showed millimolar inhibition constant against hCA II), followed by diethyldithiocarbamate, selenate, tellurate, perrhenate, selenocyanate, trithiocarbonate, tetraborato, pyrophosphate, stannate, carbonate, bicarbonate, azide, cyanide, thiocyanate and cyanate with KIs in the range of 0...
November 14, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27914283/binding-pattern-of-intermediate-udp-4-keto-xylose-to-human-udp-xylose-synthase-synthesis-and-std-nmr-of-model-keto-saccharides
#20
Claudia Puchner, Thomas Eixelsberger, Bernd Nidetzky, Lothar Brecker
Human UDP-xylose synthase (hUXS1) exclusively converts UDP-glucuronic acid to UDP-xylose via intermediate UDP-4-keto-xylose (UDP-Xyl-4O). Synthesis of model compounds like methyl-4-keto-xylose (Me-Xyl-4O) is reported to investigate the binding pattern thereof to hUXS1. Hence, selective oxidation of the desired hydroxyl function required employment of protecting group chemistry. Solution behavior of synthesized keto-saccharides was studied without enzyme via (1)H and (13)C NMR spectroscopy with respect to existent forms in deuterated potassium phosphate buffer...
November 5, 2016: Carbohydrate Research
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