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https://www.readbyqxmd.com/read/29149572/au-i-catalyzed-dimerization-of-two-alkyne-units-interplay-between-butadienyl-and-cyclopropenylmethyl-cation-model-studies-and-trapping-experiments
#1
Mathis Kreuzahler, Sven Fabig, Gebhard Haberhauer, Rolf Gleiter
In recent years, Au(I)-catalyzed reactions proved to be a valuable tool for the synthesis of substituted cycles by cycloaromatization and cycloisomerization starting from alkynes. Despite of the myriads of Au(I)-catalyzed reactions of alkynes, the mono Au(I)-catalyzed pendant to the radical dimerization of non-conjugated alkyne units has not been investigated by quantum chemical calculations. Herein by means of quantum chemical calculations, we describe the mono Au(I)-catalyzed dimerization of two alkyne units as well as the transannular ring closure reaction of a non-conjugated diyne...
November 17, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29149274/meretoja-syndrome-general-considerations-and-contributions-of-plastic-surgery-in-surgical-treatment
#2
Henri Friedhofer, Aneta Hionia Vassiliadis, Marcela Benetti Scarpa, Bruno Ferreira Luitgards, Rolf Gemperli
No abstract text is available yet for this article.
November 15, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29149245/high-dimensional-therapeutic-inference-in-the-focally-damaged-human-brain
#3
Tianbo Xu, Hans Rolf Jäger, Masud Husain, Geraint Rees, Parashkev Nachev
Though consistency across the population renders the extraordinarily complex functional anatomy of the human brain surveyable, the inverse inference-from common functional maps to individual behaviour-is constrained by marked individual deviation from the population mean. Such inference is fundamental to the evaluation of therapeutic interventions in focal brain injury, where the impact of an induced structural change in the brain is quantified by its behavioural consequences, inevitably refracted through the lens of lesion-outcome relations...
November 15, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29147921/correction-to-sub-anesthetic-xenon-increases-erythropoietin-levels-in-humans-a-randomized-controlled-trial
#4
Christian Stoppe, Julia Ney, Martin Brenke, Andreas Goetzenich, Christoph Emontzpohl, Gereon Schälte, Oliver Grottke, Manfred Moeller, Rolf Rossaint, Mark Coburn
Page 1764, Column 2, `Acknowledgements' section: The first sentence, which previously read.
November 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29146996/the-role-of-cxcr3-lrp1-cross-talk-in-the-invasion-of-primary-brain-tumors
#5
Kevin Boyé, Nadège Pujol, Isabel D Alves, Ya-Ping Chen, Thomas Daubon, Yi-Zong Lee, Stephane Dedieu, Marion Constantin, Lorenzo Bello, Marco Rossi, Rolf Bjerkvig, Shih-Che Sue, Andreas Bikfalvi, Clotilde Billottet
CXCR3 plays important roles in angiogenesis, inflammation, and cancer. However, the precise mechanism of regulation and activity in tumors is not well known. We focused on CXCR3-A conformation and on the mechanisms controlling its activity and trafficking and investigated the role of CXCR3/LRP1 cross talk in tumor cell invasion. Here we report that agonist stimulation induces an anisotropic response with conformational changes of CXCR3-A along its longitudinal axis. CXCR3-A is internalized via clathrin-coated vesicles and recycled by retrograde trafficking...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29144972/building-bridges-through-science
#6
Thomas Lissek, Michelle Adams, John Adelman, Ehud Ahissar, Mohammed Akaaboune, Huda Akil, Mustafa al'Absi, Fazal Arain, Juan Carlos Arango-Lasprilla, Deniz Atasoy, Jesus Avila, Ashraf Badawi, Hilmar Bading, Abdul Mannan Baig, Jimena Baleriola, Carlos Belmonte, Ilaria Bertocchi, Heinrich Betz, Colin Blakemore, Olaf Blanke, Philipp Boehm-Sturm, Tobias Bonhoeffer, Paolo Bonifazi, Nils Brose, Patrizia Campolongo, Tansu Celikel, Cathy C Chang, Ta-Yuan Chang, Ami Citri, Hollis T Cline, Jesus M Cortes, Kathleen Cullen, Kellie Dean, José M Delgado-Garcia, Mathieu Desroches, John F Disterhoft, John E Dowling, Andreas Draguhn, Sherif F El-Khamisy, Abdeljabbar El Manira, S Ather Enam, Juan M Encinas, Asier Erramuzpe, José A Esteban, Isabel Fariñas, Edmond Fischer, Izumi Fukunaga, Iñigo Gabilondo, Detlev Ganten, Albert Gidon, Juan Carlos Gomez-Esteban, Paul Greengard, Valery Grinevich, Agnés Gruart, Roger Guillemin, Ahmad R Hariri, Bassem Hassan, Michael Häusser, Yasunori Hayashi, Natasha K Hussain, Adnan Abdul Jabbar, Mohamed Jaber, Reinhardt Jahn, Essam Mohammed Janahi, Mohamed Kabbaj, Helmut Kettenmann, Merel Kindt, Shira Knafo, Georg Köhr, Shoji Komai, Harm Krugers, Bernd Kuhn, Nouria Lakhdar Ghazal, Matthew E Larkum, Mickey London, Beat Lutz, Carlos Matute, Luis Martinez-Millan, Mouna Maroun, James McGaugh, Ahmed A Moustafa, Anwar Nasim, Klaus-Armin Nave, Erwin Neher, Karoly Nikolich, Tiago Outeiro, Lucy M Palmer, Olga Penagarikano, Isabel Perez-Otano, Donald W Pfaff, Bruno Poucet, Atta-Ur Rahman, Pedro Ramos-Cabrer, Ali Rashidy-Pour, Richard J Roberts, Serafim Rodrigues, Joshua R Sanes, Andreas T Schaefer, Menahem Segal, Idan Segev, Saad Shafqat, Nikhat Ahmed Siddiqui, Hermona Soreq, Eduardo Soriano-García, Rainer Spanagel, Rolf Sprengel, Greg Stuart, Thomas C Südhof, Jan Tønnesen, Mario Treviño, Basim M Uthman, J Craig Venter, Alexei Verkhratsky, Craig Weiss, Torsten N Wiesel, Emre Yaksi, Ofer Yizhar, Larry J Young, Paul Young, Nasser H Zawia, José L Zugaza, Mazahir T Hasan
Science is ideally suited to connect people from different cultures and thereby foster mutual understanding. To promote international life science collaboration, we have launched "The Science Bridge" initiative. Our current project focuses on partnership between Western and Middle Eastern neuroscience communities.
November 15, 2017: Neuron
https://www.readbyqxmd.com/read/29142783/birth-order-and-maternal-age-for-reported-cases-of-severe-prenatal-cortical-hyperostosis-caffey-silverman-disease
#7
Rolf R Engel, Raul F Cifuentes
The spectrum of prenatal cortical hyperostosis includes a mild phenotype that typically presents after 35 weeks of gestation, and a severe form that presents earlier. The skeletal and systemic manifestations of the severe phenotype remain unexplained. A review of reported cases indicates that older mothers and firstborn infants are overrepresented. This combination suggests decreased fertility. Fourteen years after the birth of the present case, his mother presented with renal failure from multiple myeloma raising the possibility that a maternal antibody may play a role in the etiology of severe prenatal Caffey disease...
July 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/29142490/postoperative-elevated-resistive-indices-do-not-predict-hepatic-artery-thrombosis-in-extended-criteria-donor-livers
#8
Eric J Siskind, Fauzia Vandermeer, Tamar R Siskind, David A Bruno, Samuel Sultan, Josue Alvarez-Casas, Arielle Stafford, Barton Lane, John C Lamattina, Rolf N Barth, Steven I Hanish
Postoperative transplant liver ultrasounds were analyzed in standard criteria donor (SCD), extended criteria donor (ECD), and donation after cardiac death (DCD) liver allografts to determine if elevated resistive indices (RIs) are consistently present and if they are pathological. Postoperative transplant liver ultrasounds were reviewed from 115 consecutive patients. Hepatic arterial RIs were stratified based on the type of donor: DCD, macrosteatosis (>30%), or standard criteria. In all patients with elevated RI, subsequent ultrasounds were reviewed to demonstrate RI normalization...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142318/the-natural-product-carolacton-inhibits-folate-dependent-c1-metabolism-by-targeting-fold-mthfd
#9
Chengzhang Fu, Asfandyar Sikandar, Jannik Donner, Nestor Zaburannyi, Jennifer Herrmann, Michael Reck, Irene Wagner-Döbler, Jesko Koehnke, Rolf Müller
The natural product carolacton is a macrolide keto-carboxylic acid produced by the myxobacterium Sorangium cellulosum, and was originally described as an antibacterial compound. Here we show that carolacton targets FolD, a key enzyme from the folate-dependent C1 metabolism. We characterize the interaction between bacterial FolD and carolacton biophysically, structurally and biochemically. Carolacton binds FolD with nanomolar affinity, and the crystal structure of the FolD-carolacton complex reveals the mode of binding...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29141958/dna-methylation-defines-regional-identity-of-human-intestinal-epithelial-organoids-and-undergoes-dynamic-changes-during-development
#10
Judith Kraiczy, Komal M Nayak, Kate J Howell, Alexander Ross, Jessica Forbester, Camilla Salvestrini, Roxana Mustata, Sally Perkins, Amanda Andersson-Rolf, Esther Leenen, Anke Liebert, Ludovic Vallier, Philip C Rosenstiel, Oliver Stegle, Gordon Dougan, Robert Heuschkel, Bon-Kyoung Koo, Matthias Zilbauer
OBJECTIVE: Human intestinal epithelial organoids (IEOs) are increasingly being recognised as a highly promising translational research tool. However, our understanding of their epigenetic molecular characteristics and behaviour in culture remains limited. DESIGN: We performed genome-wide DNA methylation and transcriptomic profiling of human IEOs derived from paediatric/adult and fetal small and large bowel as well as matching purified human gut epithelium. Furthermore, organoids were subjected to in vitro differentiation and genome editing using CRISPR/Cas9 technology...
November 15, 2017: Gut
https://www.readbyqxmd.com/read/29141914/proteotranscriptomics-reveal-signaling-networks-in-the-ovarian-cancer-microenvironment
#11
Thomas Worzfeld, Florian Finkernagel, Silke Reinartz, Anne Konzer, Till Adhikary, Andrea Nist, Thorsten Stiewe, Uwe Wagner, Mario Looso, Johannes Graumann, Rolf Müller
Ovarian cancer is characterized by early transcoelomic metastatic spread via the peritoneal fluid, where tumor cell spheroids (TU), tumor-associated T cells (TAT), and macrophages (TAM) create a unique microenvironment promoting cancer progression, chemoresistance and immuno-suppression. However, the underlying signaling mechanisms remain largely obscure.  To chart these signaling networks, we performed comprehensive proteomic and transcriptomic analyses of TU, TAT and TAM from ascites of ovarian cancer patients...
November 15, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29140964/whole-body-computed-tomography-in-severely-injured-patients
#12
Stefan Huber-Wagner, Karl-Georg Kanz, Marc Hanschen, Martijn van Griensven, Peter Biberthaler, Rolf Lefering
PURPOSE OF REVIEW: To provide an update on the relevant and recent studies on whole-body computed tomography (WBCT) imaging of severely injured patients. RECENT FINDINGS: The advantages of WBCT in time saving, diagnostic accuracy and even in survival have been proven in numerous studies. WBCT can also be beneficial in haemodynamically unstable major trauma patients. The CT scanner should be located close to the emergency department or even in the trauma room. The issue of radiation is still quite important, however, iterative as well as split-bolus protocols can nowadays reduce radiation significantly...
November 14, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29140636/trends-and-patterns-in-unintentional-injury-fatalities-in-australian-agriculture
#13
Tony Lower, Margaret Rolfe, Noeline Monaghan
Agriculture is recognized internationally as a hazardous industry. This article describes the trends and patterns of unintentional farm fatalities in Australia. Data from the National Coronial Information System were analyzed to assess all unintentional farm fatalities for the 2001-2015 period. A secondary comparison with earlier coronial system data from 1989-1992 was also completed to ascertain historical changes. There was no statistically significant change in the rate of work-related fatalities per 100,000 workers in the 2001-2015 period...
April 26, 2017: Journal of Agricultural Safety and Health
https://www.readbyqxmd.com/read/29139245/evaluation-of-a-pointwise-microcirculation-assessment-method-using-liquid-and-multilayered-tissue-simulating-phantoms
#14
Ingemar Fredriksson, Rolf B Saager, Anthony J Durkin, Tomas Strömberg
A fiber-optic probe-based instrument, designed for assessment of parameters related to microcirculation, red blood cell tissue fraction (fRBC), oxygen saturation (SO2), and speed resolved perfusion, has been evaluated using state-of-the-art tissue phantoms. The probe integrates diffuse reflectance spectroscopy (DRS) at two source-detector separations and laser Doppler flowmetry, using an inverse Monte Carlo method for identifying the parameters of a multilayered tissue model. Here, we characterize the accuracy of the DRS aspect of the instrument using (1) liquid blood phantoms containing yeast and (2) epidermis-dermis mimicking solid-layered phantoms fabricated from polydimethylsiloxane, titanium oxide, hemoglobin, and coffee...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29138893/standardization-of-pediatric-uroradiological-terms-a-multidisciplinary-european-glossary
#15
REVIEW
Pierre-Hugues Vivier, Thomas A Augdal, Fred E Avni, Justine Bacchetta, Rolf Beetz, Anna K Bjerre, Johan Blickman, Pierre Cochat, Rosana Coppo, Beatrice Damasio, Kassa Darge, Alaa El-Ghoneimi, Piet Hoebeke, Göran Läckgren, Marc-David Leclair, Maria-Luisa Lobo, Gianantonio Manzoni, Stephen D Marks, Girolamo Mattioli, Hans-Joachim Mentzel, Pierre Mouriquand, Tryggve Nevéus, Aikaterini Ntoulia, Lil-Sofie Ording-Muller, Josef Oswald, Frederica Papadopoulou, Gabriella Porcellini, Ekkehard Ring, Wolfgang Rösch, Ana F Teixeira, Michael Riccabona
To promote the standardization of nephro-uroradiological terms used in children, the European Society of Paediatric Radiology uroradiology taskforce wrote a detailed glossary. This work has been subsequently submitted to European experts in pediatric urology and nephrology for discussion and acceptance to improve the quality of radiological reports and communication between different clinicians involved in pediatric urology and nephrology.
November 15, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29138460/global-sequestration-potential-of-increased-organic-carbon-in-cropland-soils
#16
Robert J Zomer, Deborah A Bossio, Rolf Sommer, Louis V Verchot
The role of soil organic carbon in global carbon cycles is receiving increasing attention both as a potentially large and uncertain source of CO2 emissions in response to predicted global temperature rises, and as a natural sink for carbon able to reduce atmospheric CO2. There is general agreement that the technical potential for sequestration of carbon in soil is significant, and some consensus on the magnitude of that potential. Croplands worldwide could sequester between 0.90 and 1.85 Pg C/yr, i.e. 26-53% of the target of the "4p1000 Initiative: Soils for Food Security and Climate"...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29138093/electrophysiological-correlates-of-performance-monitoring-under-social-observation-in-patients-with-social-anxiety-disorder-and-healthy-controls
#17
Rolf Voegler, Jutta Peterburs, Hannah Lemke, Sebastian Ocklenburg, Roman Liepelt, Thomas Straube
Previous research suggests that electrophysiological correlates of performance monitoring, in particular the error-related negativity (ERN), vary according to psychopathology and context factors. The present study examined the effect of social context on behavioral and electrophysiological correlates of performance monitoring in healthy adult subjects and in patients with social anxiety disorder (SAD). Participants performed two runs of a Go/NoGo flanker task in different social conditions: in the observation condition, they were observed by a confederate while performing the task, whereas there was no observation in the control condition...
November 11, 2017: Biological Psychology
https://www.readbyqxmd.com/read/29137234/the-af4-mll-fusion-transiently-augments-multilineage-hematopoietic-engraftment-but-is-not-sufficient-to-initiate-leukemia-in-cord-blood-cd34-cells
#18
Cristina Prieto, Rolf Marschalek, Alessa Kühn, Adelheid Bursen, Clara Bueno, Pablo Menéndez
The translocation t(4;11)(q21;q23) is the hallmark genetic abnormality associated with infant pro-B acute lymphoblastic leukemia (B-ALL) and has the highest frequency of rearrangement in Mixed-lineage leukemia (MLL) leukemias. Unlike other MLL translocations, MLL-AF4-induced proB-ALL is exceptionally difficult to model in mice/humans. Previous work has investigated the relevance of the reciprocal translocation fusion protein AF4-MLL for t(4;11) leukemia, finding that AF4-MLL is capable of inducing proB-ALL without requirement for MLL-AF4 when expressed in murine hematopoietic stem/progenitor cells (HSPCs)...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136794/determination-of-neutral-diols-and-carboxylic-acids-formed-during-glycerol-electrooxidation-by-capillary-electrophoresis-with-dual-c-4-d
#19
Wanderson Sirley Reis Teixeira, Mauro Sérgio Ferreira Santos, Jonas Gruber, Ivano Gebhardt Rolf Gutz, Fernando Silva Lopes
Methods for determination of glycerol and its electrooxidation products (neutral diols and carboxylates) by capillary electrophoresis (CE) with dual capacitively coupled contactless conductivity detectors (C(4)D) are presented. Glycerol, dihydroxyacetone and glyceraldehyde were detected as anionic borate complexes in less than 3min under counter Electroosmotic Flow (EOF) mode (resolution of the critical pair of 1.8). Limits of detection (LODs) of 15, 15 and 10µmolL(-1) were obtained for glycerol, dihydroxyacetone and glyceraldehyde, respectively...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136644/developmentally-regulated-internal-transcription-initiation-during-meiosis-in-budding-yeast
#20
Sai Zhou, Rolf Sternglanz, Aaron M Neiman
Sporulation of budding yeast is a developmental process in which cells undergo meiosis to generate stress-resistant progeny. The dynamic nature of the budding yeast meiotic transcriptome has been well established by a number of genome-wide studies. Here we develop an analysis pipeline to systematically identify novel transcription start sites that reside internal to a gene. Application of this pipeline to data from a synchronized meiotic time course reveals over 40 genes that display specific internal initiations in mid-sporulation...
2017: PloS One
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