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https://www.readbyqxmd.com/read/28645177/mobile-genetic-elements-in-neisseria-gonorrhoeae-movement-for-change
#1
Ana Cehovin, Steven B Lewis
Neisseria gonorrhoeae, the causative agent of the sexually transmitted disease gonorrhoeae, possesses several mobile genetic elements (MGEs). The MGEs such as transposable elements mediate intra-chromosomal rearrangements, while plasmids and the gonococcal genetic island are involved in inter-chromosomal gene transfer. Additionally, gonococcal MGEs serve as hotspots for recombination and integration of other genetic elements such as bacteriophages, contribute to gene regulation or spread genes through gonococcal populations by horizontal gene transfer...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28644379/physical-forces-may-cause-the-hoxd-gene-cluster-elongation
#2
Spyros Papageorgiou
Hox gene collinearity was discovered be Edward B. Lewis in 1978. It consists of the Hox1, Hox2, Hox3 ordering of the Hox genes in the chromosome from the telomeric to the centromeric side of the chromosome. Surprisingly, the spatial activation of the Hox genes in the ontogenetic units of the embryo follows the same ordering along the anterior-posterior embryonic axis. The chromosome microscale differs from the embryo macroscale by 3 to 4 orders of magnitude. The traditional biomolecular mechanisms are not adequate to comprise phenomena at so divergent spatial domains...
June 23, 2017: Biology
https://www.readbyqxmd.com/read/28644034/predicting-the-oxygen-binding-properties-of-platinum-nanoparticle-ensembles-by-combining-high-precision-electron-microscopy-dft
#3
Jolyon Aarons, Lewys Jones, Aakash Varambhia, Katherine E MacArthur, Dogan Ozkaya, Misbah Sarwar, Chris-Kriton Skylaris, Peter D Nellist
Many studies of heterogeneous catalysis, both experimental and computational, make use of idealised structures such as extended surfaces or regular polyhedral nanoparticles. This simplification neglects the morphological diversity in real commercial oxygen reduction reaction (ORR) catalysts used in fuel-cell cathodes. Here we introduce an approach that combines 3D nanoparticle structures obtained from high-throughput high-precision electron microscopy with density functional theory. Discrepancies between experimental observations and cuboctahedral/truncated-octahedral particles are revealed and discussed using a range of widely used descriptors, such as electron-density, d-band centres and generalised coordination numbers...
June 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28644024/direct-visible-light-excited-asymmetric-lewis-acid-catalysis-of-intermolecular-2-2-photocycloadditions
#4
Xiaoqiang Huang, Taylor Robyn Quinn, Klaus Harms, Richard D Webster, Lilu Zhang, Olaf Wiest, Eric Meggers
A reaction design is reported in which a substrate-bound chiral Lewis acid complex absorbs visible light and generates an excited state which directly reacts with a co-substrate in a highly stereocontrolled fashion. Specifically, a chiral rhodium complex catalyzes visible-light-activated intermolecular [2+2] cycloadditions, providing a wide range of cyclobutanes with up to >99% ee and up to >20:1 d.r. Noteworthy is the ability to create vicinal all-carbon-quaternary stereocenters including spiro centers in an intermolecular fashion...
June 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28643874/2-6-bis-diazaboryl-pyridine-a-superbasic-sterically-demanding-pyridine-ligand
#5
Tobias Böttcher, Daniel Himmel, Jan Schröder
Herein we present a convenient one-pot route to a sterically demanding superbasic pyridine. Functionalization of the 2,6-positions with the highly sigma-donating boryl-groups shifts the calculated gas phase basicity of the pyridine's nitrogen atom to 1012 kJ mol-1, which outperforms the 'proton sponge' 1,8-bis(dimethylamino)naphthalene (996 kJ mol-1). The diazaboryl groups are oriented orthogonal to the pyridine ring and do not block the N-position, resembling the geometry of commonly used N-heterocyclic carbenes...
June 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28643839/a-visible-light-activated-rhodium-complex-in-enantioselective-conjugate-addition-of-%C3%AE-amino-radicals-with-michael-acceptors
#6
Shao-Xia Lin, Gui-Jun Sun, Qiang Kang
We report an efficient enantioselective conjugate addition of photogenerated α-amino radicals to Michael acceptors catalyzed by a newly prepared chiral-at-metal rhodium complex. This protocol shows that a single Rh(iii) complex can serve not only as a Lewis acid but also as a photoredox catalyst to control the stereoselectivity during the bond formation.
June 23, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28643406/prussian-blue-nanocubes-with-an-open-framework-structure-coated-with-pedot-as-high-capacity-cathodes-for-lithium-sulfur-batteries
#7
Dawei Su, Michael Cortie, Hongbo Fan, Guoxiu Wang
It is shown that Prussian blue analogues (PBAs) can be a very competitive sulfur host for lithium-sulfur (Li-S) batteries. Sulfur stored in the large interstitial sites of a PBA host can take advantage of reversible and efficient insertion/extraction of both Li(+) and electrons, due to the well-trapped mobile dielectron redox centers in the well-defined host. It is demonstrated that Na2 Fe[Fe(CN)6 ] has a large open framework, and as a cathode, it both stores sulfur and acts as a polysulfide diffusion inhibitor based on the Lewis acid-base bonding effect...
June 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28643075/a-standardized-comparison-of-peri-operative-complications-after-minimally-invasive-esophagectomy-ivor-lewis-versus-mckeown
#8
Andrew M Brown, Michael J Pucci, Adam C Berger, Talar Tatarian, Nathaniel R Evans, Ernest L Rosato, Francesco Palazzo
BACKGROUND: While our institutional approach to esophageal resection for cancer has traditionally favored a minimally invasive (MI) 3-hole, McKeown esophagectomy (MIE 3-hole) during the last five years several factors has determined a shift in our practice with an increasing number of minimally invasive Ivor Lewis (MIE IL) resections being performed. We compared peri-operative outcomes of the two procedures, hypothesizing that MIE IL would be less morbid in the peri-operative setting compared to MIE 3-hole...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28643012/clinical-outcomes-in-pt4-tongue-carcinoma-are-worse-than-in-pt3-disease-how-extrinsic-muscle-invasion-should-be-considered
#9
EDITORIAL
Carol M Lewis
No abstract text is available yet for this article.
June 22, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28642965/erratum-to-development-of-a-unifying-target-and-consensus-indicators-for-global-surgical-systems-strengthening-proposed-by-the-global-alliance-for-surgery-obstetric-trauma-and-anaesthesia-care-the-g4-alliance
#10
Adil Haider, John W Scott, Colin D Gause, Mira Meheš, Grace Hsiung, Albulena Prelvukaj, Dana Yanocha, Lauren M Baumann, Faheem Ahmed, Na'eem Ahmed, Sara Anderson, Herve Angate, Lisa Arfaa, Horacio Asbun, Tigistu Ashengo, Kisembo Asuman, Ruben Ayala, Stephen Bickler, Saul Billingsley, Peter Bird, Matthijs Botman, Marilyn Butler, Jo Buyske, Angelo Capozzi, Kathleen Casey, Charles Clayton, James Cobey, Michael Cotton, Dan Deckelbaum, Miliard Derbew, Catherine deVries, Jeanne Dillner, Max Downham, Natalie Draisin, David Echinard, Sohier Elneil, Ahmed ElSayed, Abigail Estelle, Allen Finley, Erica Frenkel, Philip K Frykman, Florin Gheorghe, Julian Gore-Booth, Richard Henker, Jaymie Henry, Orion Henry, Laura Hoemeke, David Hoffman, Iko Ibanga, Eric V Jackson, Pankaj Jani, Walter Johnson, Andrew Jones, Zeina Kassem, Asuman Kisembo, Abbey Kocan, Sanjay Krishnaswami, Robert Lane, Asad Latif, Barbara Levy, Dimitrios Linos, Peter Linz, Louis A Listwa, Declan Magee, Emmanuel Makasa, Michael L Marin, Claude Martin, Kelly McQueen, Jamie Morgan, Richard Moser, Robert Neighbor, William M Novick, Stephen Ogendo, Akinyinka Omigbodun, Bisola Onajin-Obembe, Neil Parsan, Beverly K Philip, Raymond Price, Shahnawaz Rasheed, Marjorie Ratel, Cheri Reynolds, Steven M Roser, Jackie Rowles, Lubna Samad, John Sampson, Harshadkumar Sanghvi, Marchelle L Sellers, David Sigalet, Bruce C Steffes, Erin Stieber, Mamta Swaroop, John Tarpley, Asha Varghese, Julie Varughese, Richard Wagner, Benjamin Warf, Neil Wetzig, Susan Williamson, Joshua Wood, Anne Zeidan, Lewis Zirkle, Brendan Allen, Fizan Abdullah
No abstract text is available yet for this article.
June 22, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28642612/active-removal-of-waste-dye-pollutants-using-ta3n5-w18o49-nanocomposite-fibres
#11
Daniel R Jones, Virginia Gomez, Joseph C Bear, Bertrand Rome, Francesco Mazzali, James D McGettrick, Aled R Lewis, Serena Margadonna, Waheed A Al-Masry, Charles W Dunnill
A scalable solvothermal technique is reported for the synthesis of a photocatalytic composite material consisting of orthorhombic Ta3N5 nanoparticles and WOx≤3 nanowires. Through X-ray diffraction and X-ray photoelectron spectroscopy, the as-grown tungsten(VI) sub-oxide was identified as monoclinic W18O49. The composite material catalysed the degradation of Rhodamine B at over double the rate of the Ta3N5 nanoparticles alone under illumination by white light, and continued to exhibit superior catalytic properties following recycling of the catalysts...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642540/dental-education-potentially-damaging-disconnect
#12
L Cabot, M Woolford, A Banerjee, M Cobourne, A Hasan, H Lewis-Greene, M Packer, S Sood, J Turner, E Whaites
No abstract text is available yet for this article.
June 23, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28642330/effects-of-intensive-bp-control-in-ckd
#13
Alfred K Cheung, Mahboob Rahman, David M Reboussin, Timothy E Craven, Tom Greene, Paul L Kimmel, William C Cushman, Amret T Hawfield, Karen C Johnson, Cora E Lewis, Suzanne Oparil, Michael V Rocco, Kaycee M Sink, Paul K Whelton, Jackson T Wright, Jan Basile, Srinivasan Beddhu, Udayan Bhatt, Tara I Chang, Glenn M Chertow, Michel Chonchol, Barry I Freedman, William Haley, Joachim H Ix, Lois A Katz, Anthony A Killeen, Vasilios Papademetriou, Ana C Ricardo, Karen Servilla, Barry Wall, Dawn Wolfgram, Jerry Yee
The appropriate target for BP in patients with CKD and hypertension remains uncertain. We report prespecified subgroup analyses of outcomes in participants with baseline CKD in the Systolic Blood Pressure Intervention Trial. We randomly assigned participants to a systolic BP target of <120 mm Hg (intensive group; n=1330) or <140 mm Hg (standard group; n=1316). After a median follow-up of 3.3 years, the primary composite cardiovascular outcome occurred in 112 intensive group and 131 standard group CKD participants (hazard ratio [HR], 0...
June 22, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28642257/interaction-between-the-fto-gene-body-mass-index-and-depression-meta-analysis-of-13701-individuals
#14
REVIEW
Margarita Rivera, Adam E Locke, Tanguy Corre, Darina Czamara, Christiane Wolf, Ana Ching-Lopez, Yuri Milaneschi, Stefan Kloiber, Sara Cohen-Woods, James Rucker, Katherine J Aitchison, Sven Bergmann, Dorret I Boomsma, Nick Craddock, Michael Gill, Florian Holsboer, Jouke-Jan Hottenga, Ania Korszun, Zoltan Kutalik, Susanne Lucae, Wolfgang Maier, Ole Mors, Bertram Müller-Myhsok, Michael J Owen, Brenda W J H Penninx, Martin Preisig, John Rice, Marcella Rietschel, Federica Tozzi, Rudolf Uher, Peter Vollenweider, Gerard Waeber, Gonneke Willemsen, Ian W Craig, Anne E Farmer, Cathryn M Lewis, Gerome Breen, Peter McGuffin
BackgroundDepression and obesity are highly prevalent, and major impacts on public health frequently co-occur. Recently, we reported that having depression moderates the effect of the FTO gene, suggesting its implication in the association between depression and obesity.AimsTo confirm these findings by investigating the FTO polymorphism rs9939609 in new cohorts, and subsequently in a meta-analysis.MethodThe sample consists of 6902 individuals with depression and 6799 controls from three replication cohorts and two original discovery cohorts...
June 22, 2017: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/28642152/g-quadruplex-dynamics
#15
REVIEW
Robert W Harkness, Anthony K Mittermaier
G-quadruplexes (GQs) are four-stranded nucleic acid secondary structures formed by guanosine (G)-rich DNA and RNA sequences. It is becoming increasingly clear that cellular processes including gene expression and mRNA translation are regulated by GQs. GQ structures have been extensively characterized, however little attention to date has been paid to their conformational dynamics, despite the fact that many biological GQ sequences populate multiple structures of similar free energies, leading to an ensemble of exchanging conformations...
June 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28641913/a-five-year-review-of-paediatric-burns-and-social-deprivation-is-there-a-link
#16
Helen Richards, Maria Kokocinska, Darren Lewis
AIM: To establish if there is a correlation between burn incidence and social deprivation in order to formulate a more effective burns prevention strategy. METHODS: A quantitative retrospective review of International Burn Injury Database (IBID) was carried out over a period from 2006 to 2011 to obtain data for children referred to our burns centre in West Midlands. Social deprivation scores for geographical areas were obtained from Office of National Statistics (ONS)...
June 19, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28641737/exploring-experiences-barriers-and-enablers-to-home-and-class-based-exercise-in-rotator-cuff-tendinopathy-a-qualitative-study
#17
Fiona M Sandford, Thomas A B Sanders, Jeremy S Lewis
STUDY DESIGN: Qualitative study. INTRODUCTION: Adherence is paramount to the successful outcome of exercise-based treatment. PURPOSE OF STUDY: The barriers and enablers to adherence to a home- and class-based exercise program were explored in this qualitative study. METHODS: Semi-structured interviews were carried out to establish common themes relating to the participants' experiences during a year-long randomized controlled trial...
April 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28641222/theoretical-evaluation-on-selective-adsorption-characteristics-of-alkali-metal-based-sorbents-for-gaseous-oxidized-mercury
#18
Hongjian Tang, Yufeng Duan, Chun Zhu, Tianyi Cai, Chunfeng Li, Liang Cai
Alkali metal-based sorbents are potential for oxidized mercury (Hg(2+)) selective adsorption but show hardly effect to elemental mercury (Hg(0)) in flue gas. Density functional theory (DFT) was employed to investigate the Hg(0) and HgCl2 adsorption mechanism over alkali metal-based sorbents, including calcium oxide (CaO), magnesium oxide (MgO), potassium chloride (KCl) and sodium chloride (NaCl). Hg(0) was found to weakly interact with CaO (001), MgO (001), KCl (001) and NaCl (001) surfaces while HgCl2 was effectively adsorbed on top-O and top-Cl sites...
June 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28640913/temporal-patterns-of-deepwater-horizon-impacts-on-the-benthic-infauna-of-the-northern-gulf-of-mexico-continental-slope
#19
Michael G Reuscher, Jeffrey G Baguley, Nathan Conrad-Forrest, Cynthia Cooksey, Jeffrey L Hyland, Christopher Lewis, Paul A Montagna, Robert W Ricker, Melissa Rohal, Travis Washburn
The Deepwater Horizon oil spill occurred in spring and summer 2010 in the northern Gulf of Mexico. Research cruises in 2010 (approximately 2-3 months after the well had been capped), 2011, and 2014 were conducted to determine the initial and subsequent effects of the oil spill on deep-sea soft-bottom infauna. A total of 34 stations were sampled from two zones: 20 stations in the "impact" zone versus 14 stations in the "non-impact" zone. Chemical contaminants were significantly different between the two zones...
2017: PloS One
https://www.readbyqxmd.com/read/28640813/identification-of-a-sj%C3%A3-gren-s-syndrome-susceptibility-locus-at-oas1-that-influences-isoform-switching-protein-expression-and-responsiveness-to-type-i-interferons
#20
He Li, Tove Ragna Reksten, John A Ice, Jennifer A Kelly, Indra Adrianto, Astrid Rasmussen, Shaofeng Wang, Bo He, Kiely M Grundahl, Stuart B Glenn, Corinne Miceli-Richard, Simon Bowman, Sue Lester, Per Eriksson, Maija-Leena Eloranta, Johan G Brun, Lasse G Gøransson, Erna Harboe, Joel M Guthridge, Kenneth M Kaufman, Marika Kvarnström, Deborah S Cunninghame Graham, Ketan Patel, Adam J Adler, A Darise Farris, Michael T Brennan, James Chodosh, Rajaram Gopalakrishnan, Michael H Weisman, Swamy Venuturupalli, Daniel J Wallace, Kimberly S Hefner, Glen D Houston, Andrew J W Huang, Pamela J Hughes, David M Lewis, Lida Radfar, Evan S Vista, Contessa E Edgar, Michael D Rohrer, Donald U Stone, Timothy J Vyse, John B Harley, Patrick M Gaffney, Judith A James, Sean Turner, Ilias Alevizos, Juan-Manuel Anaya, Nelson L Rhodus, Barbara M Segal, Courtney G Montgomery, R Hal Scofield, Susan Kovats, Xavier Mariette, Lars Rönnblom, Torsten Witte, Maureen Rischmueller, Marie Wahren-Herlenius, Roald Omdal, Roland Jonsson, Wan-Fai Ng, Gunnel Nordmark, Christopher J Lessard, Kathy L Sivils
Sjögren's syndrome (SS) is a common, autoimmune exocrinopathy distinguished by keratoconjunctivitis sicca and xerostomia. Patients frequently develop serious complications including lymphoma, pulmonary dysfunction, neuropathy, vasculitis, and debilitating fatigue. Dysregulation of type I interferon (IFN) pathway is a prominent feature of SS and is correlated with increased autoantibody titers and disease severity. To identify genetic determinants of IFN pathway dysregulation in SS, we performed cis-expression quantitative trait locus (eQTL) analyses focusing on differentially expressed type I IFN-inducible transcripts identified through a transcriptome profiling study...
June 22, 2017: PLoS Genetics
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