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https://www.readbyqxmd.com/read/27920921/a-two-dimensional-cd-ii-coordination-polymer-poly-di-aqua-%C3%AE-3-5-6-bis-pyridin-2-yl-pyrazine-2-3-di-carboxyl-ato-%C3%AE%C2%BA-5-o-2-o-3-o-3-n-4-n-5-cadmium
#1
Monserrat Alfonso, Helen Stoeckli-Evans
The reaction of 5,6-bis-(pyridin-2-yl)pyrazine-2,3-di-carb-oxy-lic acid with cadmium dichloride leads to the formation of the title two-dimensional coordination polymer, [Cd(C16H8N4O4)(H2O)2] n . The metal atom is sevenfold coordinated by one pyrazine and one pyridine N atom, two water O atoms, and by two carboxyl-ate O atoms, one of which bridges two Cd(II) atoms to form a Cd2O2 unit situated about a centre of inversion. Hence, the ligand coordinates to the cadmium atom in an N,N',O-tridentate and an O-monodentate manner...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920897/impact-of-biopolymer-matrices-on-relaxometric-properties-of-contrast-agents
#2
Alfonso Maria Ponsiglione, Maria Russo, Paolo Antonio Netti, Enza Torino
Properties of water molecules at the interface between contrast agents (CAs) for magnetic resonance imaging and macromolecules could have a valuable impact on the effectiveness of metal chelates. Recent studies, indeed, demonstrated that polymer architectures could influence CAs' relaxivity by modifying the correlation times of the metal chelate. However, an understanding of the physico-chemical properties of polymer/CA systems is necessary to improve the efficiency of clinically used CAs, still exhibiting low relaxivity...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920268/clinical-value-of-perfusion-abnormalities-of-brain-on-technetium-99m-hmpao-single-photon-emission-computed-tomography-in-children-with-sydenham-chorea
#3
Sara Maria Delle Acque Giorgio, Maria Grazia Caprio, Flavia Galante, Giustina Russo, Alfonso Romano, Emilia Vergara, Maria Alessio, Alberto Cuocolo
We evaluated whether perfusion brain abnormalities by single-photon emission computed tomography (SPECT) imaging improves diagnostic and prognostic assessment in Sydenham chorea. Twenty-three children with acute autoimmune chorea underwent technetium-99m hexamethylpropyleneamine oxime brain SPECT imaging. In 16 children, SPECT was repeated during the follow-up. A pattern of basal ganglia hyperperfusion was observed in 20 (87%) patients. In 4 of 10 patients with generalized chorea, perfusion was comparable in right and left striatum and right and left thalamus...
December 5, 2016: Journal of Child Neurology
https://www.readbyqxmd.com/read/27920260/how-to-deal-with-anterior-knee-pain-in-the-active-young-patient
#4
Vicente Sanchis-Alfonso, Scott F Dye
CONTEXT: Anterior knee pain (AKP) represents the most common reason to consult with a clinician who specializes in the knee. Despite the high incidence of the disorder, however, its etiology is still controversial. Many unnecessary surgeries that may damage the patient are done for this clinical entity. EVIDENCE ACQUISITION: A PubMed search from 1995 through June 2016. STUDY DESIGN: Clinical review. LEVEL OF EVIDENCE: Level 4...
December 5, 2016: Sports Health
https://www.readbyqxmd.com/read/27916198/-zodiac-consensus-on-herpes-zoster-prevention-in-persons-with-diabetes-mellitus
#5
Esther Redondo Margüello, Dídac Mauricio, José Javier Mediavilla Bravo, Alfonso Soto González, Elías Delgado Álvarez, F Javier Ampudia-Blasco, Esteban Jódar Gimeno
No abstract text is available yet for this article.
November 2016: Semergen
https://www.readbyqxmd.com/read/27915000/drug-resistant-pathogens-and-travel-no-road-map-but-a-new-initiative-from-travel-medicine-and-infectious-disease
#6
EDITORIAL
Patricia Schlagenhauf, Philippe Gautret, Alfonso J Rodrguez-Morales, Michael E Jones, Stephen Toovey, Eskild Petersen, Lin H Chen
No abstract text is available yet for this article.
November 30, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27914908/association-between-ventilatory-settings-and-development-of-acute-respiratory-distress-syndrome-in-mechanically-ventilated-patients-due-to-brain-injury
#7
Eva Tejerina, Paolo Pelosi, Alfonso Muriel, Oscar Peñuelas, Yuda Sutherasan, Fernando Frutos-Vivar, Nicolás Nin, Andrew R Davies, Fernando Rios, Damian A Violi, Konstantinos Raymondos, Javier Hurtado, Marco González, Bin Du, Pravin Amin, Salvatore M Maggiore, Arnaud W Thille, Marco Antonio Soares, Manuel Jibaja, Asisclo J Villagomez, Michael A Kuiper, Younsuck Koh, Rui P Moreno, Amine Ali Zeggwagh, Dimitrios Matamis, Antonio Anzueto, Niall D Ferguson, Andrés Esteban
PURPOSE: In neurologically critically ill patients with mechanical ventilation (MV), the development of acute respiratory distress syndrome (ARDS) is a major contributor to morbidity and mortality, but the role of ventilatory management has been scarcely evaluated. We evaluate the association of tidal volume, level of PEEP and driving pressure with the development of ARDS in a population of patients with brain injury. MATERIALS AND METHODS: We performed a secondary analysis of a prospective, observational study on mechanical ventilation...
November 18, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27913842/alfonso-luis-herrera-and-the-beginnings-of-evolutionism-and-studies-in-the-origin-of-life-in-mexico
#8
Ismael Ledesma-Mateos, H James Cleaves
Alfonso Luis Herrera (1868-1942) was a Mexican biologist, and significant as the principal promoter of Darwinian thought in that country. However, Herrera's thinking went beyond the evolution of living beings, and extended to the question of the origin of life itself and the place of living phenomena in the larger context of the cosmos. Perhaps more significantly, though now largely forgotten, Herrera was among the first to embark on an experimental program to understand the origin of life, one which may be seen as foundational for later workers, most notably Sidney Fox and Alexander Oparin, and which has been resuscitated recently...
December 2016: Journal of Molecular Evolution
https://www.readbyqxmd.com/read/27913588/action-categories-in-lateral-occipitotemporal-cortex-are-organized-along-sociality-and-transitivity
#9
Moritz F Wurm, Alfonso Caramazza, Angelika Lingnau
: How neural specificity for distinct conceptual knowledge categories arises is central for understanding the organization of semantic memory in the human brain. While there is a large body of research on the neural processing of distinct object categories, the organization of action categories remains largely unknown. In particular, it is unknown if different action categories follow a specific topographical organization on the cortical surface, analogously to the category-specific organization of object knowledge...
December 2, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27909475/ablation-of-atrial-fibrillation-in-combination-with-left-atrial-appendage-occlusion-in-a-single-procedure-rationale-and-technique
#10
REVIEW
Ignacio García-Bolao, Naiara Calvo, Alfonso Macias, Joaquin Barba, Nahikari Salterain, Pablo Ramos, Gabriel Ballesteros, Renzo Neglia
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, and is associated with a fivefold increase in the risk of ischemic stroke and systemic embolism. Left atrial appendage (LAA) is the source of thrombi in up to 90% of patients with nonvalvular atrial fibrillation (AF). Although thromboembolic prophylaxis by means of oral anticoagulants (OAC) has been shown to be very effective (OAC), they also confer an inevitably risk of serious bleeding. Catheter ablation (CA) is an effective treatment for symptomatic AF but its role in stroke prevention remains unproved...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908996/draft-genome-sequence-of-aeromonas-caviae-ch129-a-marine-derived-bacterium-isolated-from-the-coast-of-s%C3%A3-o-paulo-state-brazil
#11
Flávio Augusto Cardozo, Nadia Catalina Alfonso Vargas, Cristina Kraemer Zimpel, Adalberto Pessoa, Irma Nelly Gutierrez Rivera
We report here the draft genome sequence of Aeromonas caviae CH129, a marine-derived bacterium isolated from the coast of São Paulo state, Brazil. Genomic analysis revealed genes encoding enzymes involved in binding, transport, and chitin metabolism and different virulence-associated factors.
December 1, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27907157/human-bone-derived-collagen-for-the-development-of-an-artificial-corneal-endothelial-graft-in-vivo-results-in-a-rabbit-model
#12
Natalia Vázquez, Manuel Chacón, Carlos A Rodríguez-Barrientos, Jesús Merayo-Lloves, Miguel Naveiras, Begoña Baamonde, Jose F Alfonso, Iriana Zambrano-Andazol, Ana C Riestra, Álvaro Meana
Corneal keratoplasty (penetrating or lamellar) using cadaveric human tissue, is nowadays the main treatment for corneal endotelial dysfunctions. However, there is a worldwide shortage of donor corneas available for transplantation and about 53% of the world's population have no access to corneal transplantation. Generating a complete cornea by tissue engineering is still a tough goal, but an endothelial lamellar graft might be an easier task. In this study, we developed a tissue engineered corneal endothelium by culturing human corneal endothelial cells on a human purified type I collagen membrane...
2016: PloS One
https://www.readbyqxmd.com/read/27907134/reward-contingencies-improve-goal-directed-behavior-by-enhancing-posterior-brain-attentional-regions-and-increasing-corticostriatal-connectivity-in-cocaine-addicts
#13
Patricia Rosell-Negre, Juan-Carlos Bustamante, Paola Fuentes-Claramonte, Víctor Costumero, Juan-José Llopis-Llacer, Alfonso Barrós-Loscertales
The dopaminergic system provides the basis for the interaction between motivation and cognition. It is triggered by the possibility of obtaining rewards to initiate the neurobehavioral adaptations necessary to achieve them by directing the information from motivational circuits to cognitive and action circuits. In drug addiction, the altered dopamine (DA) modulation of the meso-cortico-limbic reward circuitry, such as the prefrontal cortex (PFC), underlies the disproportionate motivational value of drug use at the expense of other non-drug reinforcers and the user's loss of control over his/her drug intake...
2016: PloS One
https://www.readbyqxmd.com/read/27907122/biodegradation-of-methyl-tertiary-butyl-ether-mtbe-by-a-microbial-consortium-in-a-continuous-up-flow-packed-bed-biofilm-reactor-kinetic-study-metabolite-identification-and-toxicity-bioassays
#14
Guadalupe Alfonso-Gordillo, César Mateo Flores-Ortiz, Liliana Morales-Barrera, Eliseo Cristiani-Urbina
This study investigated the aerobic biodegradation of methyl tertiary-butyl ether (MTBE) by a microbial consortium in a continuous up-flow packed-bed biofilm reactor using tezontle stone particles as a supporting material for the biofilm. Although MTBE is toxic for microbial communities, the microbial consortium used here was able to resist MTBE loading rates up to 128.3 mg L-1 h-1, with removal efficiencies of MTBE and chemical oxygen demand (COD) higher than 90%. A linear relationship was observed between the MTBE loading rate and the MTBE removal rate, as well as between the COD loading rate and the COD removal rate, within the interval of MTBE loading rates from 11...
2016: PloS One
https://www.readbyqxmd.com/read/27906407/active-magnetoplasmonic-split-ring-ring-nanoantennas
#15
Hua Yu Feng, Feng Luo, Raul Arenal, Luc Henrard, Fernando García, Gaspar Armelles, Alfonso Cebollada
Here we present a novel active system, which combines the plasmon resonance enhancement of the magneto-optical activity in magnetoplasmonic nanostructures and the strong electromagnetic field localization of split ring resonators. The structures consist of a gold split ring resonator placed on top of a gold nanoring in the section of which a Co nanodot is inserted. By placing the split ring gap on top of the nanodot, and continuously varying the split ring gap opening, we are able to tune and enhance the electromagnetic field intensity in the Co nanodot, as confirmed experimentally by EELS and numerically using DDA simulation methods...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27905926/understanding-clinical-and-non-clinical-decisions-under-uncertainty-a-scenario-based-survey
#16
Vlad V Simianu, Margaret A Grounds, Susan L Joslyn, Jared E LeClerc, Anne P Ehlers, Nidhi Agrawal, Rafael Alfonso-Cristancho, Abraham D Flaxman, David R Flum
BACKGROUND: Prospect theory suggests that when faced with an uncertain outcome, people display loss aversion by preferring to risk a greater loss rather than incurring certain, lesser cost. Providing probability information improves decision making towards the economically optimal choice in these situations. Clinicians frequently make decisions when the outcome is uncertain, and loss aversion may influence choices. This study explores the extent to which prospect theory, loss aversion, and probability information in a non-clinical domain explains clinical decision making under uncertainty...
December 1, 2016: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/27903651/t-cells-encountering-myeloid-cells-programmed-for-amino-acid-dependent-immunosuppression-use-rictor-mtorc2-for-proliferative-checkpoint-decisions
#17
Lee-Ann Van de Velde, Chitra Subramanian, Amber M Smith, Luke Barron, Joseph E Qualls, Geoffrey Neale, Adolfo Alfonso-Pecchio, Suzanne Jackowski, Charles O Rock, Thomas A Wynn, Peter J Murray
Modulation of T cell proliferation and function by immunoregulatory myeloid cells is an essential means of preventing self-reactivity and restoring tissue homeostasis. Consumption of amino acids such as arginine and tryptophan by immunoregulatory macrophages is one pathway that suppresses local T cell proliferation. Using a reduced complexity in vitro macrophage: T cell co-culture system, we show that macrophage Arginase-1 (Arg1) is the only factor required by M2 macrophages to block T cells in G1, and this effect is mediated by L-arginine elimination rather than metabolite generation...
November 30, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27900404/erasing-borders-a-brief-chronicle-of-early-synthetic-biology
#18
REVIEW
Juli Peretó
Synthetic Biology is currently presented as an emergent field involving the application of engineering principles to living matter. However, the scientific pursuit of making life in a laboratory is not new and has been the ultimate, if somewhat distant, aim of the origin-of-life research program for many years. Actually, over a century ago, the idea that the synthesis of life was indispensable to fully understand its nature already appealed to material scientists and evolutionists alike. Jacques Loeb proposed a research program from an engineering standpoint, following a synthetic method (experimental abiogenesis) and based on his mechanist vision of living beings, which he considered true chemical machines...
December 2016: Journal of Molecular Evolution
https://www.readbyqxmd.com/read/27900172/comparative-effects-of-three-48-week-community-based-physical-activity-and-exercise-interventions-on-aerobic-capacity-total-cholesterol-and-mean-arterial-blood-pressure
#19
Steven Mann, Alfonso Jimenez, Sarah Domone, Chris Beedie
AIM: Insufficient research examines the treatment effectiveness of real-world physical activity (PA) interventions. PURPOSE: We investigated the effects of 3 interventions on directly measured cardiovascular variables. All treatments and measures were administered in community settings by fitness centre staff. METHODS: Participants were sedentary individuals receiving no medication to reduce cardiovascular disease (CVD) risk (n=369, age 43 ±5 years)...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899818/bnc2-is-a-putative-tumor-suppressor-gene-in-high-grade-serous-ovarian-carcinoma-and-impacts-cell-survival-after-oxidative-stress
#20
Laura Cesaratto, Eleonora Grisard, Michela Coan, Luigi Zandonà, Elena De Mattia, Elena Poletto, Erika Cecchin, Fabio Puglisi, Vincenzo Canzonieri, Maria Teresa Mucignat, Antonella Zucchetto, Gabriele Stocco, Alfonso Colombatti, Milena S Nicoloso, Riccardo Spizzo
Rs3814113 is the single-nucleotide polymorphism (SNP) showing the strongest association with high-grade serous ovarian carcinoma (HGSOC) incidence and is located in an intergenic region about 44 kb downstream of basonuclin 2 (BNC2) gene. Lifetime number of ovulations is associated with increased risk to develop HGSOC, probably because of cell damage of extrauterine Müllerian epithelium by ovulation-induced oxidative stress. However, the impact of low-penetrance HGSOC risk alleles (e.g. rs3814113) on the damage induced by oxidative stress remains unclear...
September 22, 2016: Cell Death & Disease
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