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Ž Snoj, G Riegler, T Moritz, G Bodner
No abstract text is available yet for this article.
July 27, 2017: Muscle & Nerve
Takanori Shibata, Akihito Mitake, Yosuke Akiyama, Kyalo Stephen Kanyiva
Sulfur-directed sp C-S bond cleavage along with a regioselective reaction with alkynes proceeded to give (Z)-enyne sulfides in high to excellent yields. Mechanistic studies were conducted, including characterization of an intermediate. An intramolecular variant realized the construction of a dibenzodithiepin skeleton, which is a seven-membered ring with two sulfur atoms.
July 27, 2017: Chemical Communications: Chem Comm
Hui Liu, Hangzhou Yang, Xueguang Qiao, Yongqiang Wang, Xiaochong Liu, Yen-Sian Lee, Kok-Sing Lim, Harith Ahmad
We have experimentally demonstrated an optical fiber Mach-Zehnder interferometer (MZI) structure formed by a few-mode photonic crystal fiber (PCF) for curvature measurement and inscribed a fiber Bragg grating (FBG) in the PCF for the purpose of simultaneously measuring temperature. The structure consists of a PCF sandwiched between two multi-mode fibers (MMFs). Bending experimental results show that the proposed sensor has a sensitivity of -1.03 nm/m(-1) at a curvature range from 10 m(-1) to 22.4 m(-1), and the curvature sensitivity of the embedded FBG was -0...
July 27, 2017: Sensors
Jian Liang, Yang Chen, Gang Ren, Wei Dong, Min Shi, Li Xiong, Jiankang Li, Jiahao Dong, Fei Li, Jinbin Yuan
Euodia rutaecarpa is a common traditional Chinese medicine (TCM) in clinical practice, having the ability to suppress pain and cease coughing; however, with the increasing reports showing that it is toxic, particularly hepatotoxic, the concerns raised by what cause its toxicity is growing. In the current study, an analysis method based on the spectrum effect has been employed to screen the major hepatotoxic components in Euodia rutaecarpa so that the toxic material's basis would be elucidated. A fingerprinting method of the Euodia rutaecarpa extracts (which were petroleum ether, chloroform, ethyl acetate, n-butanol, and water) using ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometer (UHPLC-QTOF/MS) has been developed...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Simon Chamberland, Helen H Yang, Michael M Pan, Stephen W Evans, Sihui Guan, Mariya Chavarha, Ying Yang, Charleen Salesse, Haodi Wu, Joseph C Wu, Thomas R Clandinin, Katalin Toth, Michael Z Lin, François St-Pierre
Monitoring voltage dynamics in defined neurons deep in the brain is critical for unraveling the function of neuronal circuits, but is challenging due to the limited performance of existing tools. In particular, while genetically encoded voltage indicators have shown promise for optical detection of voltage transients, many indicators exhibit low sensitivity when imaged under two-photon illumination. Previous studies thus fell short of visualizing voltage dynamics in individual neurons in single trials. Here, we report ASAP2s, a novel voltage indicator with improved sensitivity...
July 27, 2017: ELife
Ivica Cvrtila, Hugo Fanlo-Virgós, Gaël Schaeffer, Guillermo Monréal Santiago, Sijbren Otto
Photoisomerization provides a clean and efficient way of reversibly altering physical properties of chemical systems and injecting energy into them. These effects have been applied in development of systems such as photoresponsive materials, molecular motors, or photoactivated drugs. Typically, switching from more to less stable isomer(s) is per-formed by irradiation with UV or visible light, while the reverse process proceeds thermally, or by irradiation using another wavelength. In this work we developed a method of rapid and tunable ZE isomerization of C=N bond in acyl hydrazones, using aromatic thiols as nucleophilic catalysts...
July 27, 2017: Journal of the American Chemical Society
Sanith Cheriyamundath, Rahul Raghavan, Asoke Banerji, Karel D Klika, Cornelia Ulrich, Robert W Owen, Joseph Madassery
The aim of the study was to isolate and identify the major cytotoxic principle from plant leaves of Pogostemon quadrifolius (Benth.) and evaluate its antiproliferative potential against human cancer cells. Plant leaves were extracted sequentially with a soxhlet apparatus, using petroleum ether, chloroform and methanol solvents. Petroleum ether and chloroform extracts exhibited antiproliferative properties against Caco-2, HeLa, THP-1, MCF-7 and Jurkat E6-1cancer cell lines tested, but methanol extracts failed to exhibit such activity...
July 27, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
Jason A Wilken, Paran Pordell, Brant Goode, Rachel Jarteh, Zayzay Miller, Benjamin G Saygar, Leroy Maximore, Watta M Borbor, Moses Carmue, Gregory W Walker, Adolphus Yeiah
BACKGROUND: In early 2015, a patient from a cluster of cases of Ebola Virus Disease (EVD) in Monrovia, Liberia traveled to a rural village in Margibi County, potentially exposing numerous persons. The patient died in the village and post-mortem testing confirmed Ebola Virus infection. Problem The Margibi County Health Team (CHT; Kakata, Margibi, Liberia) needed to prevent further transmission of EVD within and outside of the affected villages, and they needed to better understand the factors that support or impede compliance with measures to stop the spread of EVD...
July 27, 2017: Prehospital and Disaster Medicine
Stanisław Lamperski, Lutful Bari Bhuiyan, Douglas Henderson, Monika Kaja
Grand canonical Monte Carlo simulation results are reported for an electric double layer (EDL) modeled by a planar charged hard wall, hard sphere cations with an off-center charge, and spherical anions with a charge at the center of the sphere. The ion charge numbers are Z+ = +1 and Z- = -1, and the diameter, d, of a hard sphere is the same for anions and cations. The ions are immersed in a solvent mimicked by a continuum dielectric medium at standard temperature. The results are obtained for three values of charge displacement, s+0 = d/16, d/4, 7d/16 from the center of the sphere and the following electrolyte concentrations: 0...
July 27, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Liam J McGuffin, Ahmad N Shuid, Robert Kempster, Ali H A Maghrabi, John O Nealon, Bajuna R Salehe, Jennifer D Atkins, Daniel B Roche
Our aim in CASP12 was to improve our Template Based Modelling (TBM) methods through better model selection, accuracy self-estimate (ASE) scores and refinement. To meet these aims we developed two new automated methods, which we used to score, rank and improve upon the provided server models. Firstly, the ModFOLD6_rank method, for improved global Quality Assessment (QA), model ranking and the detection of local errors. Secondly, the ReFOLD method for fixing errors through iterative QA guided refinement. For our automated predictions we developed the IntFOLD4-TS protocol, which integrates the ModFOLD6_rank method for scoring the multiple-template models that were generated using a number of alternative sequence-structure alignments...
July 27, 2017: Proteins
Magnus B Widegren, Gavin J Harkness, Alexandra M Z Slawin, David B Cordes, Matthew L Clarke
No abstract text is available yet for this article.
August 1, 2017: Angewandte Chemie
A J Kämpe, A Costantini, R E Mäkitie, N Jäntti, H Valta, M Mäyränpää, H Kröger, M Pekkinen, F Taylan, H Jiao, O Mäkitie
Altogether 95 children with primary bone fragility were screened for variants in PLS3, the gene underlying X-linked osteoporosis. Two children with multiple peripheral and spinal fractures and low BMD had novel disease-causing PLS3 variants. Children with milder phenotypes had no pathogenic variants. PLS3 screening is indicated in childhood-onset primary osteoporosis. INTRODUCTION: The study aimed to determine the role of pathogenic PLS3 variants in children's bone fragility and to elucidate the associated phenotypic features...
July 26, 2017: Osteoporosis International
Jean-Pierre Gratia
The exact meaning of sexual reproduction and the precise evolutionary period at which recombination first took place remains the subject of intense debates. Despite some unity in biochemical organisation of genetic recombination, a plethora of mechanisms are found to exist in microbes and their viruses. Some routes used by viruses bypass barriers to genetic heterology and provide bacteria with genes conferring a selective advantage, and some contribute to genome enlargement. The present review aims at highlighting the diversity of such mechanisms with a particular focus on spontaneous zygogenesis (or Z-mating)...
July 26, 2017: Antonie Van Leeuwenhoek
Z C Wong, W Y Fan, T S Chwee, Michael B Sullivan
Fluorescence lifetimes were evaluated using TD-DFT under different approximations for the emitting molecule and various exchange-correlation functionals, such as B3LYP, BMK, CAM-B3LYP, LC-BLYP, M06, M06-2X, M11, PBE0, ωB97, ωB97X, LC-BLYP*, and ωB97X* where the range-separation parameters in the last two functionals were tuned in a non-empirical fashion. Changes in the optimised molecular geometries between the ground and electronically excited states were found to affect the quality of the calculated lifetimes significantly, while the inclusion of vibronic features led to further improvements over the assumption of a vertical electronic transition...
July 27, 2017: Physical Chemistry Chemical Physics: PCCP
Reginald C Ohiri, Essien E Bassey
Fermented African oil bean (Pentaclethra macrophylla Benth) seed also referred to as "Ugba" is a known delicacy, mainly consumed by Africans. Human migration has also led to the introduction of this delicacy into most European and American countries. This study shows the changes in volatile components of African oil bean (P. macrophylla Benth) seed at different stages of fermentation. A quantity of 0.3 kg each of dehulled and sliced raw sample and cooked unfermented sample were separately ground, while 2 and 4 days fermented samples obtained by inoculating 0...
July 2017: Food Science & Nutrition
W Dmowski, S Gierlotka, Z Wang, Y Yokoyama, B Palosz, T Egami
Through high-energy x-ray diffraction and atomic pair density function analysis we find that Zr-based metallic alloy, heated to the supercooled liquid state under hydrostatic pressure and then quenched to room temperature, exhibits a distinct glassy structure. The PDF indicates that the Zr-Zr distances in this glass are significantly reduced compared to those quenched without pressure. Annealing at the glass transition temperature at ambient pressure reverses structural changes and the initial glassy state is recovered...
July 26, 2017: Scientific Reports
Ammar Bin Yousaf, M Imran, Syed Javaid Zaidi, Peter Kasak
The demand for clean renewable energy is increasing due to depleting fossil fuels and environmental concerns. Photocatalytic hydrogen production through water splitting is one such promising route to meet global energy demands with carbon free technology. Alternative photocatalysts avoiding noble metals are highly demanded. Herein, we fabricated heterostructure consist of oxygen-deficient WO3-x nanorods with Zn0.3Cd0.7S nanoparticles for an efficient Z-Scheme photocatalytic system. Our as obtained heterostructure showed photocatalytic H2 evolution rate of 352...
July 26, 2017: Scientific Reports
Ingrid E Christophersen, Michiel Rienstra, Carolina Roselli, Xiaoyan Yin, Bastiaan Geelhoed, John Barnard, Honghuang Lin, Dan E Arking, Albert V Smith, Christine M Albert, Mark Chaffin, Nathan R Tucker, Molong Li, Derek Klarin, Nathan A Bihlmeyer, Siew-Kee Low, Peter E Weeke, Martina Müller-Nurasyid, J Gustav Smith, Jennifer A Brody, Maartje N Niemeijer, Marcus Dörr, Stella Trompet, Jennifer Huffman, Stefan Gustafsson, Claudia Schurmann, Marcus E Kleber, Leo-Pekka Lyytikäinen, Ilkka Seppälä, Rainer Malik, Andrea R V R Horimoto, Marco Perez, Juha Sinisalo, Stefanie Aeschbacher, Sébastien Thériault, Jie Yao, Farid Radmanesh, Stefan Weiss, Alexander Teumer, Seung Hoan Choi, Lu-Chen Weng, Sebastian Clauss, Rajat Deo, Daniel J Rader, Svati H Shah, Albert Sun, Jemma C Hopewell, Stephanie Debette, Ganesh Chauhan, Qiong Yang, Bradford B Worrall, Guillaume Paré, Yoichiro Kamatani, Yanick P Hagemeijer, Niek Verweij, Joylene E Siland, Michiaki Kubo, Jonathan D Smith, David R Van Wagoner, Joshua C Bis, Siegfried Perz, Bruce M Psaty, Paul M Ridker, Jared W Magnani, Tamara B Harris, Lenore J Launer, M Benjamin Shoemaker, Sandosh Padmanabhan, Jeffrey Haessler, Traci M Bartz, Melanie Waldenberger, Peter Lichtner, Marina Arendt, Jose E Krieger, Mika Kähönen, Lorenz Risch, Alfredo J Mansur, Annette Peters, Blair H Smith, Lars Lind, Stuart A Scott, Yingchang Lu, Erwin B Bottinger, Jussi Hernesniemi, Cecilia M Lindgren, Jorge A Wong, Jie Huang, Markku Eskola, Andrew P Morris, Ian Ford, Alex P Reiner, Graciela Delgado, Lin Y Chen, Yii-Der Ida Chen, Roopinder K Sandhu, Man Li, Eric Boerwinkle, Lewin Eisele, Lars Lannfelt, Natalia Rost, Christopher D Anderson, Kent D Taylor, Archie Campbell, Patrik K Magnusson, David Porteous, Lynne J Hocking, Efthymia Vlachopoulou, Nancy L Pedersen, Kjell Nikus, Marju Orho-Melander, Anders Hamsten, Jan Heeringa, Joshua C Denny, Jennifer Kriebel, Dawood Darbar, Christopher Newton-Cheh, Christian Shaffer, Peter W Macfarlane, Stefanie Heilmann-Heimbach, Peter Almgren, Paul L Huang, Nona Sotoodehnia, Elsayed Z Soliman, Andre G Uitterlinden, Albert Hofman, Oscar H Franco, Uwe Völker, Karl-Heinz Jöckel, Moritz F Sinner, Henry J Lin, Xiuqing Guo, Martin Dichgans, Erik Ingelsson, Charles Kooperberg, Olle Melander, Ruth J F Loos, Jari Laurikka, David Conen, Jonathan Rosand, Pim van der Harst, Marja-Liisa Lokki, Sekar Kathiresan, Alexandre Pereira, J Wouter Jukema, Caroline Hayward, Jerome I Rotter, Winfried März, Terho Lehtimäki, Bruno H Stricker, Mina K Chung, Stephan B Felix, Vilmundur Gudnason, Alvaro Alonso, Dan M Roden, Stefan Kääb, Daniel I Chasman, Susan R Heckbert, Emelia J Benjamin, Toshihiro Tanaka, Kathryn L Lunetta, Steven A Lubitz, Patrick T Ellinor
No abstract text is available yet for this article.
July 27, 2017: Nature Genetics
Y M Liu, Y Z He, C G Bao
An approach is proposed to solve the coupled Gross-Pitaevskii equations (CGP) of the 3-species BEC in an analytical way under the Thomas-Fermi approximation (TFA). It was found that, when the strength of a kind of interaction increases and crosses over a critical value, a specific type of state-transition will occur and will cause a jump in the total energy. Due to the jump, the energy of the lowest symmetric state becomes considerably higher. This leaves a particular opportunity for the lowest asymmetric state to replace the symmetric states as the ground state...
July 26, 2017: Scientific Reports
Ricardo C Ferreira, Henry Z Simons, Whitney S Thompson, Daniel B Rainbow, Xin Yang, Antony J Cutler, Joao Oliveira, Xaquin Castro Dopico, Deborah J Smyth, Natalia Savinykh, Meghavi Mashar, Tim J Vyse, David B Dunger, Helen Baxendale, Anita Chandra, Chris Wallace, John A Todd, Linda S Wicker, Marcin L Pekalski
Identification of alterations in the cellular composition of the human immune system is key to understanding the autoimmune process. Recently, a subset of FOXP3(+) cells with low CD25 expression was found to be increased in peripheral blood from systemic lupus erythematosus (SLE) patients, although its functional significance remains controversial. Here we find in comparisons with healthy donors that the frequency of FOXP3(+) cells within CD127(low)CD25(low) CD4(+) T cells (here defined as CD25(low)FOXP3(+) T cells) is increased in patients affected by autoimmune disease of varying severity, from combined immunodeficiency with active autoimmunity, SLE to type 1 diabetes...
July 23, 2017: Journal of Autoimmunity
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