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Valmiki B Koli, Sagar D Delekar, Shivaji H Pawar
In this study, nanocomposites of Fe-doped TiO2 with multi-walled carbon nanotubes (0.1- 0.5 wt. %) were prepared by using sol-gel method. The structural and morphological analysis were carried out with using X-ray diffraction pattern and transmission electron microscopy, which confirm the presence of pure anatase phase and particle sizes in the range 15-20 nm. X-ray photoelectron spectroscopy was used to determine the surface compositions of the nanocomposites. UV-vis diffuse reflectance spectra confirm redshift in the optical absorption edge of nanocomposites with increasing amount of multi-walled carbon nanotubes...
December 2016: Journal of Materials Science. Materials in Medicine
Tanja Radovanovic, Slobodan Spasojevic, Vesna Stojanovic, Aleksandra Doronjski
INTRODUCTION: An apparent life-threatening event (ALTE) is defined as "an episode that is frightening to the observer and is characterized by some combination of apnea, color change, marked change of muscle tone, choking, or gagging." OBJECTIVE: The aims of this study were to determine etiology and outcome of severe ALTE (requiring resuscitation measures) and to review diagnostic approaches in infants hospitalized after such an episode of ALTE. METHODS: Retrospective analysis included patients hospitalized at the Intensive Care Unit, Institute of Child and Youth Healthcare of Vojvodina, after an episode of severe ALTE over a 4-year period...
September 30, 2016: Pediatric Emergency Care
Xiayan Pan, Jian Wu, Shu Xu, Yabing Duan, Zhou Mingguo
Rice bacterial leaf blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), and rice bacterial leaf streak, caused by Xanthomonas oryzae pv. oryzicola (Xoc), are major diseases of rice. Phenazine-1-carboxylic acid (PCA) is a natural product that is isolated from Pseudomonas spp. and is used to control many important rice diseases in China. We previously reported that PCA disturbs the redox balance, which results in the accumulation of reactive oxygen species (ROS) in Xoo. In this study, we found that PCA significantly up-regulated the transcript levels of catB and katE, which encode catalases, and that PCA-sensitivity was reduced when Xoo and Xoc were cultured with exogenous catalase...
October 17, 2016: Phytopathology
Jeannine Hess, Malay Patra, Abdul Jabbar, Vanessa Pierroz, Sandro Konatschnig, Bernhard Spingler, Stefano Ferrari, Robin B Gasser, Gilles Gasser
In this study, we present the design, synthesis, characterization and biological evaluation of structurally new ferrocenyl and ruthenocenyl derivatives of the organic anthelmintic monepantel (Zolvix(®)). All seven metallocenyl derivatives prepared (4a/b, 5a/b, 6a/b and 7) were isolated as racemates and characterized by (1)H, (13)C and (19)F NMR spectroscopies, mass spectrometry, IR spectroscopy and elemental microanalysis. The molecular structures of four compounds (4a/b, 6a and 7) were further confirmed by X-ray crystallography...
October 17, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
X Bao, Q Zhu, S Xue, Y Xu, X Ma, F Chen, X Hu, Z Zhu, S Chen, A Sun, D Wu, Y Song, H Qiu
No abstract text is available yet for this article.
October 17, 2016: Bone Marrow Transplantation
Michael I Jacobs, Bo Xu, Oleg Kostko, Nadja Heine, Musahid Ahmed, Kevin R Wilson
The heterogeneous reaction of ozone (O3) with 200 nm squalene nanoparticles is studied using near edge X-ray absorption fine structure (NEXAFS), ultraviolet (UPS) and X-ray photoelectron spectroscopy (XPS). Photoelectrons are detected from free nanoparticle beams using a velocity map imaging (VMI) spectrometer capable of detecting photoelectrons with up to 40 eV of kinetic energy. Heterogeneous kinetics are quantified using changes in the UPS, XPS and NEXAFS spectrum, yielding uptake coefficients for the decay of the double bonds in squalene of (3...
October 17, 2016: Journal of Physical Chemistry. A
Shiladitya Chatterjee, George H Major, Barry M Lunt, Massoud Kaykhaii, Matthew R Linford
Resist lithography is an important microfabrication technique in the electronics industry. In this, patterns are transferred by irradiation onto a photosensitive polymer. SU-8 has emerged as a favorite photoresist for High Aspect Ratio (HAR) lithography, showing high chemical and mechanical stability and biocompatibility. Unfortunately, its poor adhesion to substrates is a drawback, with possible solutions being the use of low-viscosity SU-8, surface modification with a low molecular weight adsorbate like hexamethyldisilazane (HMDS), or a commercial adhesion promotion reagent...
October 17, 2016: Microscopy and Microanalysis
Massimo Calderazzo, Pierandrea Rende, Paolo Gambardella, Giovambattista De Sarro, Luca Gallelli
A 44-year-old male developed interstitial lung disease (ILD) during treatment with rituximab (375 mg/m(2) weekly intravenous × 4 weeks) for the management of immune thrombocytopenia (ITP). After 1 month of treatment he developed dyspnea, fever (38.9 °C), an increase of C-reactive protein (CRP) and white blood cells with hypoxemia, and decreased platelets. Chest X-ray and high-resolution computed tomography revealed diffuse bilateral lung infiltrates. He was diagnosed with severe ILD; rituximab was discontinued, and treatment with fluticasone combined with salmeterol, methylprednisolone, and omeprazole was started, with an improvement of symptoms over 15 days with normalization in CRP at 30 days...
December 2015: Drug Saf Case Rep
Sylvie Y Doerflinger, Julia Tabatabai, Paul Schnitzler, Carlo Farah, Steffen Rameil, Peter Sander, Anna Koromyslova, Grant S Hansman
Human noroviruses are the dominant cause of outbreaks of acute gastroenteritis. These viruses are usually detected by molecular methods, including reverse transcriptase PCR (RT-PCR) and enzyme-linked immunosorbent assay (ELISA). Human noroviruses are genetically and antigenically diverse, with two main genogroups that are further subdivided into over 40 different genotypes. During the past decade, genogroup 2 genotype 4 (GII.4) has dominated in most countries, but recently, viruses belonging to GII.17 have increased in prevalence in a number of countries...
September 2016: MSphere
Andras Herner, Jasmina Marjanovic, Tracey Lewandowski, Violeta L Marin, Melanie J Patterson, Laura Miesbauer, Damien Ready, Jon Williams, Anil Vasudevan, Qing Lin
Photoaffinity labels are powerful tools for dissecting ligand-protein interactions, and have a broad utility in medicinal chemistry and drug discovery. Traditional photoaffinity labels work through non-specific C-H/X-H bond insertion reactions with the protein of interest by the highly reactive photo-generated intermediate. Herein, we report a new photo-affinity label, 2-aryl-5-carboxytetrazole (ACT) that interacts with the target protein via a unique mechanism in which the photo-generated carboxynitrile imine reacts with a proximal nucleophile near the target active site...
October 14, 2016: Journal of the American Chemical Society
Paolo Pirovano, Erik R Farquhar, Marcel Swart, Aidan Richard McDonald
Two metastable NiIII complexes, [NiIII(OAc)(L)] and [NiIII(ONO2)(L)] (L = N,N'-(2,6-dimethylphenyl)-2,6-pyridinedicarboxamidate, OAc = acetate), were prepared, adding to the previously prepared [NiIII(OCO2H)(L)], with the purpose of probing the properties of terminal late-transition metal oxidants. These high-valent oxidants were prepared by the one-electron oxidation of their NiII precursors ([NiII(OAc)(L)]- and [NiII(ONO2)(L)]-) with tris(4-bromophenyl)ammoniumyl hexachloroantimonate. Fascinatingly, the reaction between any [NiII(X)(L)]- and NaOCl/acetic acid (AcOH) or cerium ammonium nitrate ((NH4)2[CeIV(NO3)6], CAN), yielded [NiIII(OAc)(L)] and [NiIII(ONO2)(L)], respectively...
October 14, 2016: Journal of the American Chemical Society
Saba Farnaghi, Indira Prasadam, Guangping Cai, Thor Friis, Zhibin Du, Ross Crawford, Xinzhan Mao, Yin Xiao
The contribution of metabolic factors on the severity of osteoarthritis (OA) is not fully appreciated. This study aimed to define the effects of hypercholesterolemia on the progression of OA. Apolipoprotein E-deficient (ApoE(-/-)) mice and diet-induced hypercholesterolemic (DIHC) rats were used to explore the effects of hypercholesterolemia on the progression of OA. Both models exhibited OA-like changes, characterized primarily by a loss of proteoglycans, collagen and aggrecan degradation, osteophyte formation, changes to subchondral bone architecture, and cartilage degradation...
October 13, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
X-M Wang, Y-G Zhang, A-L Li, Z-H Long, D Wang, X-X Li, J-H Xia, S-Y Luo, Y-H Shan
OBJECTIVE: The present study aims to investigate the relationship between expression of inflammatory cytokines in the peripheral blood and the severity of depression and anxiety in patients with Parkinson's disease (PD). PATIENTS AND METHODS: Between January 2012 and December 2015, 62 PD patients admitted to our institution were included in the PD group, and 62 healthy subjects seeking health check-up at our institution during the same period of time were enrolled in the control group...
September 2016: European Review for Medical and Pharmacological Sciences
Y Li, C G Zhang, X-H Wang, D-H Liu
OBJECTIVE: To construct the atherosclerosis model of ApoE-knockout (ApoE-/-) mouse after deposition of high-fat diet at brachiocephalic artery and coronary artery. MATERIALS AND METHODS: 40 healthy 8-week SPF-level male ApoE-/- mice of body weigh 16 to 23 g were averagely divided into a high-fat diet group and an ordinary diet group. Mice were sacrificed in a time course study by 3 months, 6 months, 9 months and 12 months. The brachiocephalic artery and coronary artery were extracted for pathological examination, and enzyme-linked immunosorbent assay (ELISA) was used for the examination of serum high-sensitivity C-reactive protein (hs-CRP) content and the relative expression level of liver peroxisome proliferator activated receptor (PPAR)...
September 2016: European Review for Medical and Pharmacological Sciences
Peter Portius, Martin Davis
A convenient synthetic route to poly(tetrazolato) silicon complexes is described based on the four reactive centres of the N-rich, highly endothermic tetraazides of the type Si(N3)4(L2). Hypercoordinate azido(tetrazolato) silicon complexes Si(N3)2(N4C-R)2(L2), R = CH3, C6H5, 4-C6H4CH3 (4a, 5, 6, 7) and Si(N3)2(N4C-L)2 (9, L = 2-C5H4N), L2 = 2,2'-bipyridine, 1,10-phenanthroline, with SiN6 skeletons were synthesised via multiple [3 + 2] dipolar cycloaddition reactions starting from Si(N3)4(L2) and a nitrile. The isolated new complexes were characterised by standard analytical methods, single crystal X-ray diffraction and differential scanning calorimetry (4a,b)...
October 13, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Lisa M Shank, Marian Tanofsky-Kraff, Nichole R Kelly, Natasha A Schvey, Shannon E Marwitz, Rim D Mehari, Sheila M Brady, Andrew P Demidowich, Miranda M Broadney, Ovidiu A Galescu, Courtney K Pickworth, Susan Z Yanovski, Jack A Yanovski
BACKGROUND: Loss of control (LOC) eating in youth is associated with excess body weight and adiposity. After adjusting for fat mass, youth with LOC eating have higher blood pressure and higher low-density lipoprotein cholesterol compared to youth without LOC eating. Increased inflammation may account for this relationship, although few data have examined this hypothesis. Therefore, this study explored the association between LOC eating and high-sensitivity C-reactive protein (hsCRP), a marker of inflammation...
October 12, 2016: Childhood Obesity
Hannah Dengel, Crispin Lichtenberg
The synthetic access to cationic bismuth compounds based on simple, monodentate, synthetically useful amido ligands, [Bi(NR2)2(L)n]+, has been investigated (R = Me, iPr, Ph; L = neutral ligand). With [BPh4]- as a counteranion, the formation of contact ion pairs and subsequent phenyl transfer from B to Bi is observed. An intermediate of this reaction, [Bi(NMe2)2(HNMe2)(BPh4)] (1), could be isolated and fully characterized. The use of fluorinated tetrarylborates as counteranions leads to more stable cationic bismuth amides...
October 12, 2016: Chemistry: a European Journal
Giuseppe Meola, Henrik Braband, Paul Schmutz, Michael Benz, Bernhard Spingler, Roger Alberto
The synthesis of mono- and difunctionalized [Re(η(6)-C6H5R)(η(6)-C6H6-nRn)](+) (n = 0, 1; R = COOH, Br) complexes starting from [Re(η(6)-benzene)2](+) is described. The lithiation of [Re(η(6)-benzene)2](+) with n-BuLi leads preferentially to the neutral, alkylated product [Re(η(6)-C6H6)(η(5)-C6H6-Bu)] but not to the expected deprotonation of the arene ring. Deprotonation/lithiation with LDA gave the mono- and the dilithiated products in situ. Their reactions with 1,1,2,2-tetra-bromoethane (TBE) or with CO2, respectively, gave [Re(η(6)-C6H5Br)(η(6)-C6H6)](+), [Re(η(6)-C6H5Br)2](+), or [Re(η(6)-C6H5COOH)(η(6)-C6H6)](+), [Re(η(6)-C6H5COOH)2](+)...
October 12, 2016: Inorganic Chemistry
Alessandro Chieregato, Claudia Bandinelli, Patricia Concepción, M Dolores Soriano, Francesco Puzzo, Francesco Basile, Fabrizio Cavani, José M López Nieto
The design of suitable catalysts for the one-pot conversion of glycerol into acrylic acid (AA) is a complex matter, as only fine-tuning of the redox and acid properties makes it possible to obtain significant yields of AA. However, fundamental understanding behind the catalytic phenomenon is still unclear. Structure-reactivity correlations are clearly behind these results, and acid sites are involved in the dehydration of glycerol into acrolein with vanadium as the main (or only) redox element. For the first time, we propose an in-depth study to shed light on the molecular-level relations behind the overall catalytic results shown by several types of V-containing catalysts...
October 12, 2016: ChemSusChem
Shin Nakamura, Takumi Noguchi
During photosynthesis, the light-driven oxidation of water performed by photosystem II (PSII) provides electrons necessary to fix CO2, in turn supporting life on Earth by liberating molecular oxygen. Recent high-resolution X-ray images of PSII show that the water-oxidizing center (WOC) is composed of an Mn4CaO5 cluster with six carboxylate, one imidazole, and four water ligands. FTIR difference spectroscopy has shown significant structural changes of the WOC during the S-state cycle of water oxidation, especially within carboxylate groups...
October 11, 2016: Proceedings of the National Academy of Sciences of the United States of America
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