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Martin Leon

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https://www.readbyqxmd.com/read/28812743/cross-realm-assessment-of-climate-change-impacts-on-species-abundance-trends
#1
Diana E Bowler, Christian Hof, Peter Haase, Ingrid Kröncke, Oliver Schweiger, Rita Adrian, Léon Baert, Hans-Günther Bauer, Theo Blick, Rob W Brooker, Wouter Dekoninck, Sami Domisch, Reiner Eckmann, Frederik Hendrickx, Thomas Hickler, Stefan Klotz, Alexandra Kraberg, Ingolf Kühn, Silvia Matesanz, Angelika Meschede, Hermann Neumann, Robert O'Hara, David J Russell, Anne F Sell, Moritz Sonnewald, Stefan Stoll, Andrea Sundermann, Oliver Tackenberg, Michael Türkay, Fernando Valladares, Kok van Herk, Roel van Klink, Rikjan Vermeulen, Karin Voigtländer, Rüdiger Wagner, Erik Welk, Martin Wiemers, Karen H Wiltshire, Katrin Böhning-Gaese
Climate change, land-use change, pollution and exploitation are among the main drivers of species' population trends; however, their relative importance is much debated. We used a unique collection of over 1,000 local population time series in 22 communities across terrestrial, freshwater and marine realms within central Europe to compare the impacts of long-term temperature change and other environmental drivers from 1980 onwards. To disentangle different drivers, we related species' population trends to species- and driver-specific attributes, such as temperature and habitat preference or pollution tolerance...
February 17, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28810235/obesity-as-a-conditioning-factor-for-high-altitude-diseases
#2
Rocío San Martin, Julio Brito, Patricia Siques, Fabiola León-Velarde
Obesity, a worldwide epidemic, has become a major health burden because it is usually accompanied by an increased risk for insulin resistance, diabetes, hypertension, cardiovascular diseases, and even some kinds of cancer. It also results in associated increases in healthcare expenditures and labor and economic consequences. There are also other fields of medicine and biology where obesity or being overweight play a major role, such as high-altitude illnesses (acute mountain sickness, hypoxic pulmonary hypertension, and chronic mountain sickness), where an increasing relationship among these two morbid statuses has been demonstrated...
August 16, 2017: Obesity Facts
https://www.readbyqxmd.com/read/28809722/classification-for-assessing-the-quality-of-diagnostic-coronary-angiography
#3
Philippe Généreux, Roxana Mehran, Martin B Leon, Nicolas Bettinger, Gregg W Stone
Coronary angiography remains the gold standard for diagnosing obstructive coronary artery disease. However, no standardized, objective, and quantitative classification to assess the quality of coronary angiography exists. In the present report, we sought to establish a novel standardized quantitative classification for the quality of coronary angiography, taking into consideration two main parameters: coronary contrast filling and coronary sinus contrast reflux. Intraobserver and interobserver reproducibility performed among 70 angiograms and 9 readers demonstrated excellent and substantial reproducibility, respectively...
August 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28806082/the-discovery-of-novel-antimalarial-aminoxadiazoles-as-a-promising-nonendoperoxide-scaffold
#4
Elena Sandoval, María José Lafuente-Monasterio, María J Almela, Pablo Castañeda, María Belén Jiménez Díaz, María S Martínez-Martínez, Jaume Vidal, Íñigo Angulo-Barturen, Paul Bamborough, Jeremy Burrows, Nicholas Cammack, María J Chaparro, José M Coterón, Cristina de Cozar, Benigno Crespo, Beatriz Díaz, Gerard Drewes, Esther Fernández, Santiago Ferrer-Bazaga, María Teresa Fraile, Francisco J Gamo, Sonja Ghidelli-Disse, Rubén Gómez, John Haselden, Sophie Huss, María Luisa León, Jaime de Mercado, Simon J F Macdonald, José Ignacio Martín Hernando, Sara Prats, Margarita Puente, Anne Rodríguez, Juan C de la Rosa, Lourdes Rueda, Carolyn Selenski, Paul Willis, David M Wilson, Michael Witty, Félix Calderón
Since the appearance of resistance to the current front-line antimalarial treatments, ACTs (artemisinin combination therapies), the discovery of novel chemical entities to treat the disease is recognized as a major global health priority. From the GSK antimalarial set, we identified an aminoxadiazole with an antiparasitic profile comparable with artemisinin (1), with no cross-resistance in a resistant strains panel and a potential new mode of action. A medicinal chemistry program allowed delivery of compounds such as 19 with high solubility in aqueous media, an acceptable toxicological profile, and oral efficacy...
August 14, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28798182/draft-genome-sequences-of-yersinia-frederiksenii-yersinia-intermedia-and-yersinia-kristensenii-strains-from-brazil
#5
Priscilla Fernanda Martins Imori, Fábio Campioni, Guojie Cao, George Kastanis, Maria Sanchez Leon, Marc William Allard, Juliana Pfrimer Falcão
Yersinia enterocolitica-like strains are usually understudied. In this work, we reported the draft genome sequences of two Yersinia frederiksenii, two Yersinia intermedia, and two Yersinia kristensenii strains isolated from humans, animals, food, and the environment in Brazil. These draft genomes will provide better molecular characterizations of these species.
August 10, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28794001/randomized-comparison-of-ridaforolimus-eluting-and-zotarolimus-eluting-coronary-stents-in-patients-with-coronary-artery-disease-primary-results-from-the-bionics-trial
#6
David E Kandzari, Pieter C Smits, Michael P Love, Ori Ben-Yehuda, Shmuel Banai, Simon D Robinson, Michael Jonas, Ran Kornowski, Rodrigo Bagur, Andres Iniguez, Haim D Danenberg, Robert L Feldman, Rajiv Jauhar, Harish Chandna, Manish A Parikh, Gidon Y Perlman, Mercedes Balcells, Peter M Markham, Melek Ozgu Ozan, Philippe Genereux, Elazer Edelman, Martin B Leon, Gregg W Stone
Background -The safety and efficacy of a novel cobalt alloy-based coronary stent with a durable elastomeric polymer eluting the antiproliferative agent ridaforolimus for treatment of patients with coronary artery disease is undetermined. Methods -A prospective, international 1:1 randomized trial was conducted to evaluate in a noninferiority design the relative safety and efficacy of ridaforolimus-eluting stents (RES) and slow-release zotarolimus-eluting stents (ZES) among 1,919 patients at 76 centers undergoing percutaneous coronary intervention...
August 9, 2017: Circulation
https://www.readbyqxmd.com/read/28760429/evidence-based-recommendations-and-expert-consensus-on-enteral-nutrition-in-the-adult-patient-with-diabetes-mellitus-or-hyperglycemia
#7
Alejandro Sanz-Paris, Julia Álvarez Hernández, María D Ballesteros-Pomar, Francisco Botella-Romero, Miguel León-Sanz, Ángela Martín-Palmero, Miguel Ángel Martínez Olmos, Gabriel Olveira
OBJECTIVE: The aim of this study was to develop evidence-based recommendations for glycemic control of patients with diabetes mellitus or stress hyperglycemia who are receiving enteral nutrition (EN). METHODS: A Delphi survey method using Grading Recommendations Assessment, Development and Evaluation criteria was utilized for evaluation of suitable studies. RESULTS: In patients with diabetes or stress hyperglycemia who were on EN support, the following results were found: CONCLUSIONS: These recommendations and suggestions regarding enteral feeding in patients with diabetes and hyperglycemia have direct clinical applicability...
September 2017: Nutrition
https://www.readbyqxmd.com/read/28760396/transcatheter-aortic-valve-replacement-with-new-generation-devices-a-systematic-review-and-meta-analysis
#8
Marco Barbanti, Sergio Buccheri, Josep Rodés-Cabau, Simona Gulino, Philippe Généreux, Gerlando Pilato, Danny Dvir, Andrea Picci, Giuliano Costa, Corrado Tamburino, Martin B Leon, John G Webb
OBJECTIVE: The aim of this study was to conduct a weighted meta-analysis to determine the rates of acute (≤30days) major outcomes after (TAVR) with second-generation devices. METHODS: A comprehensive search of multiple electronic databases from January 2011 to May 2017 was conducted using predefined criteria. New-generation TAVR devices were defined as any device which received CE mark approval or is still under evaluation for CE marking after CoreValve and SAPIEN XT prostheses...
July 25, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28755684/epstein-barr-virus-and-multiple-sclerosis-updating-pender-s-hypothesis
#9
REVIEW
Martin Laurence, Julián Benito-León
Substantial epidemiological evidence supports the involvement of the Epstein-Barr virus (EBV) in multiple sclerosis (MS). Mechanisms through which EBV may increase MS risk are reviewed here. Most individuals contract EBV in early childhood yet only develop MS in early adulthood, by which time EBV has been latent for decades. When latent, EBV is confined to a minute subset of memory B cells: about 1000 cells in peripheral blood and 500,000 cells in the lymphoid system, mainly in the mouth. Reactivation of EBV in the central nervous system (CNS) has been proposed as a cause of MS...
August 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28755136/erratum-to-mayarhynchus-karlae-n-g-n-sp-acanthocephala-neoechinorhynchidae-a-parasite-of-cichlids-perciformes-cichlidae-in-southeastern-mexico-with-comments-on-the-paraphyly-of-neoechinorhynchus-stiles-hassall-1905
#10
Carlos D Pinacho-Pinacho, Jesús S Hernández-Orts, Ana L Sereno-Uribe, Gerardo Pérez-Ponce de León, Martín García-Varela
No abstract text is available yet for this article.
July 28, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28749933/participation-of-women-and-children-in-hunting-activities-in-sierra-leone-and-implications-for-control-of-zoonotic-infections
#11
Jesse Bonwitt, Martin Kandeh, Michael Dawson, Rashid Ansumana, Foday Sahr, Ann H Kelly, Hannah Brown
The emergence of infectious diseases of zoonotic origin highlights the need to understand social practices at the animal-human interface. This study provides a qualitative account of interactions between humans and wild animals in predominantly Mende villages of southern Sierra Leone. We conducted fieldwork over 4 months including participant and direct observations, semi-structured interviews (n = 47), spontaneously occurring focus group discussions (n = 12), school essays and informal interviews to describe behaviours that may serve as pathways for zoonotic infection...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28746531/effective-tobacco-control-measures-agreement-among-medical-students
#12
Stella Regina Martins, Renato Batista Paceli, Marco Antônio Bussacos, Frederico Leon Arrabal Fernandes, Gustavo Faibischew Prado, Elisa Maria Siqueira Lombardi, Mário Terra-Filho, Ubiratan Paula Santos
Objective: To determine the level of agreement with effective tobacco control measures recommended by the World Health Organization and to assess the attitudes toward, knowledge of, and beliefs regarding smoking among third-year medical students at University of São Paulo School of Medicine, located in the city of São Paulo, Brazil. Methods: Between 2008 and 2012, all third-year medical students were invited to complete a self-administered questionnaire based on the Global Health Professionals Student Survey and its additional modules...
May 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28741573/novel-radiation-dose-reduction-fluoroscopic-technology-facilitates-chronic-total-occlusion-percutaneous-coronary-interventions
#13
Stephen Balter, Matthew Brinkman, Sanjog Kalra, Tamim Nazif, Manish Parikh, Ajay J Kirtane, Jeffrey Moses, Martin B Leon, Angeli Feri, Philip Green, Ziad A Ali, Ming Liao, Dimitrios Karmpaliotis
AIMS: Radiation exposure and prolonged procedure time continue to limit the complexity of CTO-PCI procedures attempted. This study aimed assess the impact of radiation-dose-limiting equipment on radiation dosage and fluoroscopic time in chronic total occlusion (CTO) percutaneous coronary interventions (PCI). METHODS AND RESULTS: Retrospective clinical and dosimetric data from diagnostic catheterizations (DXC) and CTO-PCI procedures performed on one of three variants of interventional fluoroscopic equipment were collected...
July 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28739812/transcatheter-therapy-for-mitral-regurgitation-clinical-challenges-and-potential-solutions
#14
REVIEW
Paul Sorajja, Martin B Leon, David H Adams, John G Webb, R Saeid Farivar
Severe mitral regurgitation is a common and complex disease that is associated with an adverse prognosis. For decades, surgical treatment has been the standard of care. Recently, multiple technologies for transcatheter mitral therapy have emerged, with the potential for both repair and replacement in patients with native mitral regurgitation. Transcatheter mitral technologies have potential as solutions for unmet clinical needs. Further rigorous clinical studies are needed to determine their efficacy and safety, as well as the appropriate patient candidates...
July 25, 2017: Circulation
https://www.readbyqxmd.com/read/28734891/ct-defined-prosthesis-patient-mismatch-downgrades-frequency-and-severity-and%C3%A2-demonstrates-no-association-with-adverse-outcomes-after-tavr
#15
John Mooney, Stephanie L Sellers, Phillip Blanke, Philippe Pibarot, Rebecca T Hahn, Danny Dvir, Pamela S Douglas, Neil J Weissman, Susheel K Kodali, Vinod H Thourani, Hasan Jilaihawi, Omar Khalique, Craig R Smith, Shaw Hua Kueh, Mickael Ohana, Romi Grover, Christopher Naoum, Aaron Crowley, Wael A Jaber, Maria C Alu, Rupa Parvataneni, Michael Mack, John G Webb, Martin B Leon, Jonathon A Leipsic
OBJECTIVES: This study sought to determine if indexed effective orifice area (EOAi), using left ventricular outflow tract measured from computed tomography (EOAiCT), reclassified prosthesis-patient mismatch (PPM) compared with conventional echocardiogram-defined measurements (EOAiTTE). BACKGROUND: PPM does not predict mortality following transcatheter aortic valve replacement (TAVR). However, it is unknown if the EOAiCT of the left ventricular outflow tract improves risk stratification...
July 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28722330/tunable-biogenic-manganese-oxides
#16
Alexandr Nikolaevich Simonov, Rosalie K Hocking, Lizhi Tao, Thomas Gengenbach, Timothy Williams, Xi-Ya Fang, Hannah J King, Shannon A Bonke, Dijon A Hoogeveen, Christine A Romano, Bradley M Tebo, Lisandra L Martin, William H Casey, Leone Spiccia
Influence of the conditions for aerobic oxidation of Mn2+(aq) catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnOx) is explored. Physical characterisation of MnOx includes scanning and transmission electron microscopies, X-ray photoelectron and K-edge Mn, Fe X-ray absorption spectroscopies. This characterisation reveals that the MnOx materials share the structural features of birnessite, yet differ in the degree of structural disorder...
July 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28719762/a-million-steps-developing-a-health-promotion-program-at-the-workplace-to-enhance-physical-activity
#17
María Eugenia González-Dominguez, José Manuel Romero-Sánchez, Antonio Ares-Camerino, Jose Carlos Marchena-Aparicio, Manuel Flores-Muñoz, Inés Infantes-Guzmán, José Manuel León-Asuero, Fernando Casals-Martín
The workplace is a key setting for the prevention of occupational risks and for promoting healthy activities such as physical activity. Developing a physically active lifestyle results in many health benefits, improving both well-being and quality of life. This article details the experience of two Spanish companies that implemented a program to promote physical exercise in the workplace, called "A Million Steps." This program aimed to increase the physical activity of participants, challenging them to reach at least a million steps in a month through group walks...
July 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28717419/platelet-extracellular-vesicles-induce-a-pro-inflammatory-smooth-muscle-cell-phenotype
#18
Tanja Vajen, Birke J Benedikter, Alexandra C A Heinzmann, Elena M Vasina, Yvonne Henskens, Martin Parsons, Patricia B Maguire, Frank R Stassen, Johan W M Heemskerk, Leon J Schurgers, Rory R Koenen
Extracellular vesicles (EVs) are mediators of cell communication during health and disease, and abundantly released by platelets upon activation or during ageing. Platelet EVs exert modulatory effects on immune and vascular cells. Platelet EVs may modulate the function of vascular smooth muscle cells (SMC). Platelet EVs were isolated from platelet-rich plasma and incubated with SMC in order to assess binding, proliferation, migration and pro-inflammatory phenotype of the cells. Platelet EVs firmly bound to resting SMC through the platelet integrin αIIbβ3, while binding also occurred in a CX3CL1-CX3CR1-dependent manner after cytokine stimulation...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28705759/implementation-of-an-electronic-checklist-in-the-icu-association-with-improved-outcome
#19
Gary Duclos, Sophie Medam, François Antonini, Djamel Mokart, Véronique Paone, Marie Hélène Po, Coralie Vigne, Emmanuelle Hammad, Frédéric Potié, Claude Martin, Laurent Zieleskiewicz, Marc Leone
OBJECTIVE: To assess the impact of an electronic checklist during the morning rounds on ventilator-associated pneumonia (VAP) in the intensive care unit (ICU). PATIENTS AND METHODS: We conducted a retrospective, before/after study in a single ICU of a university hospital. A systematic electronic checklist focusing on guidelines adherence was introduced in January 2012. From January 2008 to June 2014, we screened patients with ICU stay durations of at least 48hours...
July 10, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28701528/blood-pressure-and-arterial-load-after-transcatheter-aortic-valve-replacement-for-aortic-stenosis
#20
MULTICENTER STUDY
Brian R Lindman, Catherine M Otto, Pamela S Douglas, Rebecca T Hahn, Sammy Elmariah, Neil J Weissman, William J Stewart, Girma M Ayele, Feifan Zhang, Alan Zajarias, Hersh S Maniar, Hasan Jilaihawi, Eugene Blackstone, Khaja M Chinnakondepalli, E Murat Tuzcu, Martin B Leon, Philippe Pibarot
BACKGROUND: After aortic valve replacement, left ventricular afterload is often characterized by the residual valve obstruction. Our objective was to determine whether higher systemic arterial afterload-as reflected in blood pressure, pulsatile and resistive load-is associated with adverse clinical outcomes after transcatheter aortic valve replacement (TAVR). METHODS AND RESULTS: Total, pulsatile, and resistive arterial load were measured in 2141 patients with severe aortic stenosis treated with TAVR in the PARTNER I trial (Placement of Aortic Transcatheter Valve) who had systolic blood pressure (SBP) and an echocardiogram obtained 30 days after TAVR...
July 2017: Circulation. Cardiovascular Imaging
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