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https://www.readbyqxmd.com/read/29156080/stereocontrolled-synthesis-of-polypropionate-fragments-based-on-a-building-block-assembly-strategy-using-lithiation-borylation-methodologies
#1
Alba Millán, Pablo Grigol Martínez, Varinder Kumar Aggarwal
Polypropionates are important structural motifs in nature and are commonly made by iterative aldol or crotylation methodologies. Herein, we present an alternative strategy in which stereochemically predefined building blocks bearing appropriate functionality are coupled together using lithiation-borylation methodology with complete stereocontrol. The building blocks comprise lithiated carbamates acting as donors and boronic esters acting as acceptors. The acceptor building blocks contain β-hydroxyl groups masked as silyl groups to avoid elimination of the boronate intermediates...
November 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29155165/bovine-babesiosis-cattle-protected-in-the-field-with-a-frozen-vaccine-containing-babesia-bovis-and-babesia-bigemina-cultured-in-vitro-with-a-serum-free-medium
#2
Carmen Rojas-Martínez, Roger Iván Rodríguez-Vivas, Julio Vicente Figueroa Millán, Carlos Ramón Bautista-Garfias, Roberto Omar Castañeda-Arriola, José Juan Lira-Amaya, Patricia Vargas Urióstegui, Juan José Ojeda Carrasco, Jesús Antonio Álvarez Martínez
An attenuated live vaccine containing Babesia bovis and B. bigemina cultured in vitro with a serum-free medium was assessed for its clinical protection conferred of naïve cattle, under natural tick-challenge in a high endemicity zone to Babesia spp. Three groups of six animals were treated as follows: group I (GI) received a vaccine derived from parasites cultured with a free-serum medium; group II (GII) were immunized with the standard vaccine, with parasites cultured in a medium supplemented with 40% (v/v) bovine serum; and a control group (GIII) inoculated with non-infected bovine erythrocytes...
November 16, 2017: Parasitology International
https://www.readbyqxmd.com/read/29149855/increasing-upper-limb-training-intensity-in-chronic-stroke-using-embodied-virtual-reality-a-pilot-study
#3
Daniel Perez-Marcos, Odile Chevalley, Thomas Schmidlin, Gangadhar Garipelli, Andrea Serino, Philippe Vuadens, Tej Tadi, Olaf Blanke, José D R Millán
BACKGROUND: Technology-mediated neurorehabilitation is suggested to enhance training intensity and therefore functional gains. Here, we used a novel virtual reality (VR) system for task-specific upper extremity training after stroke. The system offers interactive exercises integrating motor priming techniques and embodied visuomotor feedback. In this pilot study, we examined (i) rehabilitation dose and training intensity, (ii) functional improvements, and (iii) safety and tolerance when exposed to intensive VR rehabilitation...
November 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29144972/building-bridges-through-science
#4
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/29141621/expectations-and-perceptions-of-primary-healthcare-professionals-regarding-their-own-continuous-education-in-catalonia-spain-a-qualitative-study
#5
Xavier Mundet-Tuduri, Ramon Crespo, Ma Luisa Fernandez-Coll, Montserrat Saumell, Flor Millan-Mata, Àngels Cardona, Núria Codern-Bové
BACKGROUND: The planning and execution of continuous education in an organization that provides health services is a complex process. The objectives, learning sequences, and implementation strategies should all be oriented to improving the health of the population. The aim of this study was to analyse the expectations and perceptions of continuous educations by primary healthcare professionals (physicians and nurses) and identify aspects that hinder or encourage the process. METHODS: A qualitative study with 5 focus groups made up of 25 primary healthcare professionals from the Catalan Health Institute, Barcelona (Catalonia, Spain)...
November 15, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/29132749/use-of-immunomodulatory-drugs-at-a-uveitis-clinic
#6
Claudia Millán-Longo, Diana Peiteado, Armelle Schlincker, Ventura Hidalgo, Amara Pieren, Alejandro Balsa, Eugenio de Miguel
OBJECTIVE: The treatment of noninfectious uveitis includes steroids and immunomodulatory drugs, the use of which has increased in the last few years, and the options have been enriched with the development of new treatments. However, clear therapeutic guidelines and protocols have not been developed. The purpose is to analyze the response to the drugs used and the characteristics of the patients treated at a multidisciplinary uveitis clinic. MATERIAL AND METHODS: Observational and retrospective study of the patients attended to from January 2012 to December 2015...
November 10, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/29132720/intensify-production-transform-biomass-to-energy-and-novel-goods-and-protect-soils-in-europe-a-vision-how-to-mobilize-marginal-lands
#7
REVIEW
P Schröder, B Beckers, S Daniels, F Gnädinger, E Maestri, N Marmiroli, M Mench, R Millan, M M Obermeier, N Oustriere, T Persson, C Poschenrieder, F Rineau, B Rutkowska, T Schmid, W Szulc, N Witters, A Sæbø
The rapid increase of the world population constantly demands more food production from agricultural soils. This causes conflicts, since at the same time strong interest arises on novel bio-based products from agriculture, and new perspectives for rural landscapes with their valuable ecosystem services. Agriculture is in transition to fulfill these demands. In many countries, conventional farming, influenced by post-war food requirements, has largely been transformed into integrated and sustainable farming...
November 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29129157/thrombectomy-6-to-24-hours-after-stroke-with-a-mismatch-between-deficit-and-infarct
#8
Raul G Nogueira, Ashutosh P Jadhav, Diogo C Haussen, Alain Bonafe, Ronald F Budzik, Parita Bhuva, Dileep R Yavagal, Marc Ribo, Christophe Cognard, Ricardo A Hanel, Cathy A Sila, Ameer E Hassan, Monica Millan, Elad I Levy, Peter Mitchell, Michael Chen, Joey D English, Qaisar A Shah, Frank L Silver, Vitor M Pereira, Brijesh P Mehta, Blaise W Baxter, Michael G Abraham, Pedro Cardona, Erol Veznedaroglu, Frank R Hellinger, Lei Feng, Jawad F Kirmani, Demetrius K Lopes, Brian T Jankowitz, Michael R Frankel, Vincent Costalat, Nirav A Vora, Albert J Yoo, Amer M Malik, Anthony J Furlan, Marta Rubiera, Amin Aghaebrahim, Jean-Marc Olivot, Wondwossen G Tekle, Ryan Shields, Todd Graves, Roger J Lewis, Wade S Smith, David S Liebeskind, Jeffrey L Saver, Tudor G Jovin
Background The effect of endovascular thrombectomy that is performed more than 6 hours after the onset of ischemic stroke is uncertain. Patients with a clinical deficit that is disproportionately severe relative to the infarct volume may benefit from late thrombectomy. Methods We enrolled patients with occlusion of the intracranial internal carotid artery or proximal middle cerebral artery who had last been known to be well 6 to 24 hours earlier and who had a mismatch between the severity of the clinical deficit and the infarct volume, with mismatch criteria defined according to age (<80 years or ≥80 years)...
November 11, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/29123682/analysis-of-xfel-serial-diffraction-data-from-individual-crystalline-fibrils
#9
David H Wojtas, Kartik Ayyer, Mengning Liang, Estelle Mossou, Filippo Romoli, Carolin Seuring, Kenneth R Beyerlein, Richard J Bean, Andrew J Morgan, Dominik Oberthuer, Holger Fleckenstein, Michael Heymann, Cornelius Gati, Oleksandr Yefanov, Miriam Barthelmess, Eirini Ornithopoulou, Lorenzo Galli, P Lourdu Xavier, Wai Li Ling, Matthias Frank, Chun Hong Yoon, Thomas A White, Saša Bajt, Anna Mitraki, Sebastien Boutet, Andrew Aquila, Anton Barty, V Trevor Forsyth, Henry N Chapman, Rick P Millane
Serial diffraction data collected at the Linac Coherent Light Source from crystalline amyloid fibrils delivered in a liquid jet show that the fibrils are well oriented in the jet. At low fibril concentrations, diffraction patterns are recorded from single fibrils; these patterns are weak and contain only a few reflections. Methods are developed for determining the orientation of patterns in reciprocal space and merging them in three dimensions. This allows the individual structure amplitudes to be calculated, thus overcoming the limitations of orientation and cylindrical averaging in conventional fibre diffraction analysis...
November 1, 2017: IUCrJ
https://www.readbyqxmd.com/read/29109410/changes-in-the-soil-bacterial-community-along-a-pedogenic-gradient
#10
Manuel Sánchez-Marañón, Isabel Miralles, José F Aguirre-Garrido, Manuel Anguita-Maeso, Vicenta Millán, Raul Ortega, José A García-Salcedo, Francisco Martínez-Abarca, Miguel Soriano
Current research on the influence of environmental and physicochemical factors in shaping the soil bacterial structure has seldom been approached from a pedological perspective. We studied the bacterial communities of eight soils selected along a pedogenic gradient at the local scale in a Mediterranean calcareous mountain (Sierra de María, SE Spain). The results showed that the relative abundance of Acidobacteria, Canditate division WPS-1, and Armatimonadetes decreased whereas that of Actinobacteria, Bacteroidetes, and Proteobacteria increased from the less-developed soils (Leptosol) to more-developed soils (Luvisol)...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29108957/matrix-vesicles-from-chondrocytes-and-osteoblasts-their-biogenesis-properties-functions-and-biomimetic-models
#11
REVIEW
Massimo Bottini, Saida Mebarek, Karen L Anderson, Agnieszka Strzelecka-Kiliszek, Lukasz Bozycki, Ana Maria Sper Simão, Maytê Bolean, Pietro Ciancaglini, Joanna Bandorowicz Pikula, Slawomir Pikula, David Magne, Niels Volkmann, Dorit Hanein, José Luis Millán, Rene Buchet
BACKGROUND: Matrix vesicles (MVs) are released from hypertrophic chondrocytes and from mature osteoblasts, the cells responsible for endochondral and membranous ossification. Under pathological conditions, they can also be released from cells of non-skeletal tissues such as vascular smooth muscle cells. MVs are extracellular vesicles of approximately 100-300nm diameter harboring the biochemical machinery needed to induce mineralization. SCOPE OF THE REVIEW: The review comprehensively delineates our current knowledge of MV biology and highlights open questions aiming to stimulate further research...
November 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29098448/incidence-of-airway-complications-in-patients-using-endotracheal-tubes-with-continuous-aspiration-of-subglottic-secretions
#12
Jordi Vallés, Susana Millán, Emili Díaz, Eva Castanyer, Xavier Gallardo, Ignacio Martín-Loeches, Marta Andreu, Mario Prenafeta, Paula Saludes, Jorge Lema, Montse Batlle, Néstor Bacelar, Antoni Artigas
BACKGROUND: Continuous aspiration of subglottic secretions is effective in preventing ventilator-associated pneumonia, but it involves a risk of mucosal damage. The main objective of our study was to determine the incidence of airway complications related to continuous aspiration of subglottic secretions. METHODS: In consecutive adult patients with continuous aspiration of subglottic secretions, we prospectively recorded clinical airway complications during the period after extubation...
November 2, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/29089903/intravesicular-phosphatase-phospho1-function-in-enamel-mineralization-and-prism-formation
#13
Mirali Pandya, Lauren Rosene, Colin Farquharson, José L Millán, Thomas G H Diekwisch
The transport of mineral ions from the enamel organ-associated blood vessels to the developing enamel crystals involves complex cargo packaging and carriage mechanisms across several cell layers, including the ameloblast layer and the stratum intermedium. Previous studies have established PHOSPHO1 as a matrix vesicle membrane-associated phosphatase that interacts with matrix vesicles molecules phosphoethanolamine and phosphocholine to initiate apatite crystal formation inside of matrix vesicles in bone. In the present study, we sought to determine the function of Phospho1 during amelogenesis...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29089624/combating-virulence-of-gram-negative-bacilli-by-ompa-inhibition
#14
Xavier Vila-Farrés, Raquel Parra-Millán, Viviana Sánchez-Encinales, Monica Varese, Rafael Ayerbe-Algaba, Nuria Bayó, Salvador Guardiola, María Eugenia Pachón-Ibáñez, Martin Kotev, Jesús García, Meritxell Teixidó, Jordi Vila, Jerónimo Pachón, Ernest Giralt, Younes Smani
Preventing the adhesion of pathogens to host cells provides an innovative approach to tackling multidrug-resistant bacteria. In this regard, the identification of outer membrane protein A (OmpA) as a key bacterial virulence factor has been a major breakthrough. The use of virtual screening helped us to identify a cyclic hexapeptide AOA-2 that inhibits the adhesion of Acinetobacter baumannii, Pseudomonas aeruginosa and Escherichia coli to host cells and the formation of biofilm, thereby preventing the development of infection in vitro and in a murine sepsis peritoneal model...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29079689/basolateral-amygdala-neurons-maintain-aversive-emotional-salience
#15
Auntora Sengupta, Joanna O Y Yau, Philip Jean-Richard Dit Bressel, Yu Liu, Zayra E Millan, John M Power, Gavan P McNally
Basolateral amygdala (BLA) neurons serve a well-accepted role in fear conditioning and fear extinction. However, the specific learning processes related to their activity at different times during learning remain poorly understood. We addressed this using behavioral tasks isolating distinct aspects of fear learning in male rats. We show that brief optogenetic inhibition of BLA neurons around moments of aversive reinforcement or non-reinforcement causes reductions in the salience of conditioned stimuli, rendering these stimuli less able to be learned about and less able to control fear or safety behaviours...
October 27, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29078386/strong-attractions-and-repulsions-mediated-by-monovalent-salts
#16
Yaohua Li, Martin Girard, Meng Shen, Jaime Andres Millan, Monica Olvera de la Cruz
Controlling interactions between proteins and nanoparticles in electrolyte solutions is crucial for advancing biological sciences and biotechnology. The assembly of charged nanoparticles (NPs) and proteins in aqueous solutions can be directed by modifying the salt concentration. High concentrations of monovalent salt can induce the solubilization or crystallization of NPs and proteins. By using a multiscale coarse-grained molecular dynamics approach, we show that, due to ionic correlations in the electrolyte, NPs pairs at high monovalent salt concentrations interact via remarkably strong long-range attractions or repulsions, which can be split into three regimes depending on the surface charge densities of the NPs...
October 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29072197/the-phase-problem-for-two-dimensional-crystals-i-theory
#17
Romain D Arnal, Rick P Millane
Properties of the phase problem for two-dimensional crystals are examined. This problem is relevant to protein structure determination using diffraction from two-dimensional crystals that has been proposed using new X-ray free-electron laser sources. The problem is shown to be better determined than for conventional three-dimensional crystallography, but there are still a large number of solutions in the absence of additional a priori information. Molecular envelope information reduces the size of the solution set, and for an envelope that deviates sufficiently from the unit cell a unique solution is possible...
November 1, 2017: Acta Crystallographica. Section A, Foundations and Advances
https://www.readbyqxmd.com/read/29071795/hemodynamic-assessment-of-perceval-sutureless-bioprosthesis-by-dobutamine-stress-echocardiography
#18
Antonino S Rubino, Fausto Biancari, Vincenzo Caruso, Vincenzo Lavanco, Fiorella Privitera, Ivana Rinaldi, Maria Sanfilippo, Giovanni Millan, Lucia V D'Urso, Sergio Castorina, Carmelo Mignosa
OBJECTIVES: The aim of this study was to evaluate the hemodynamic performance of a sutureless bioprosthesis under high workload at mid-term follow-up. METHODS: Thirty-two patients who underwent isolated aortic valve replacement with a Perceval sutureless bioprosthesis with a minimum follow-up of 1 year were enrolled in this study. S size prosthesis was deployed in 10 patients (31.3%), M size in 9 (28.1%), L size in 8 (25%) and XL size in 5 (15.6%). Effective orifice area (EOA), EOA index (EOAi), and transvalvular gradients were assessed at rest and during dobutamine stress echocardiography (DSE) a median of 19...
October 26, 2017: Echocardiography
https://www.readbyqxmd.com/read/29071301/action-monitoring-cortical-activity-coupled-to-submovements
#19
Michael Pereira, Aleksander Sobolewski, José Del R Millán
Numerous studies have examined neural correlates of the human brain's action-monitoring system during experimentally segmented tasks. However, it remains unknown how such a system operates during continuous motor output when no experimental time marker is available (such as button presses or stimulus onset). We set out to investigate the electrophysiological correlates of action monitoring when hand position has to be repeatedly monitored and corrected. For this, we recorded high-density electroencephalography (EEG) during a visuomotor tracking task during which participants had to follow a target with the mouse cursor along a visible trajectory...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29065061/a-national-study-links-nurses-physical-and-mental-health-to-medical-errors-and-perceived-worksite-wellness
#20
Bernadette Mazurek Melnyk, Liana Orsolini, Alai Tan, Cynthia Arslanian-Engoren, Gail D'Eramo Melkus, Jacqueline Dunbar-Jacob, Virginia Hill Rice, Angelica Millan, Sandra B Dunbar, Lynne T Braun, JoEllen Wilbur, Deborah A Chyun, Kate Gawlik, Lisa M Lewis
OBJECTIVE: To describe: (1) nurses' physical and mental health; (2) the relationship between health and medical errors; and (3) the association between nurses' perceptions of wellness support and their health. METHODS: A cross sectional descriptive survey was conducted with 1,790 nurses across the U.S. RESULTS: Over half of the nurses reported sub-optimal physical and mental health. Approximately half of the nurses reported having medical errors in the past 5 years...
October 23, 2017: Journal of Occupational and Environmental Medicine
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