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https://www.readbyqxmd.com/read/27913731/disentangling-polydispersity-in-the-pcna-p15paf-complex-a-disordered-transient-and-multivalent-macromolecular-assembly
#1
Tiago N Cordeiro, Po-Chia Chen, Alfredo De Biasio, Nathalie Sibille, Francisco J Blanco, Jochen S Hub, Ramon Crehuet, Pau Bernadó
The intrinsically disordered p15(PAF) regulates DNA replication and repair when interacting with the Proliferating Cell Nuclear Antigen (PCNA) sliding clamp. As many interactions between disordered proteins and globular partners involved in signaling and regulation, the complex between p15(PAF) and trimeric PCNA is of low affinity, forming a transient complex that is difficult to characterize at a structural level due to its inherent polydispersity. We have determined the structure, conformational fluctuations, and relative population of the five species that coexist in solution by combining small-angle X-ray scattering (SAXS) with molecular modelling...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27909642/seasonal-variations-and-trends-in-hospitalization-for-peptic-ulcer-disease-in-the-united-states-a-12-year-analysis-of-the-nationwide-inpatient-sample
#2
Ritesh Kanotra, Moiz Ahmed, Nileshkumar Patel, Badal Thakkar, Shantanu Solanki, Sarah Tareen, Matthew J Fasullo, Mayurathan Kesavan, Nikhil Nalluri, Ahsan Khan, Dhaval Pau, Liliane Deeb, Jeffrey Abergel, Ananya Das
BACKGROUND: Peptic ulcer disease (PUD) is a major public health burden significantly impacting the cost of hospitalization in the United States (US). We examined the trends, characteristics, complications, cost, and seasonality of PUD-related hospitalizations from 2000 to 2011. METHODS: With the use of the Nationwide Inpatient Sample from 2000 through 2011, we identified PUD-related hospitalizations using the International Classification of Diseases (ICD-9), 9th Revision, and the Clinical Modification code 531...
October 30, 2016: Curēus
https://www.readbyqxmd.com/read/27903476/rapid-aneurysmal-sac-expansion-following-endovascular-repair-of-a-dissecting-thoracoabdominal-aneurysm
#3
Pau Bargay-Juan, Teresa Martin-Gonzalez, Rachel Clough, Rafaëlle Spear, Jonathan Sobocinski, Stephan Haulon
Endovascular repair of dissecting thoracoabdominal aneurysms (TAAA) is challenging and often requires multiple procedures. A 61-year-old man with a dissecting type-II TAAA treated first by placement of a thoracic endograft, and subsequently implantation of a fenestrated endograft. Six months postoperatively, a 10mm increase of the aorta was observed. A re-entry tear in left external iliac artery(EIA) was perfusing the false lumen in a retrograde fashion connecting with the endoleak caused by the inferior mesenteric artery and lumbar arteries...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27895592/effects-of-six-months-training-on-physical-capacity-and-metaboreflex-activity-in-patients-with-multiple-sclerosis
#4
Sara Magnani, Sergio Olla, Massimiliano Pau, Girolamo Palazzolo, Filippo Tocco, Azzurra Doneddu, Maura Marcelli, Andrea Loi, Federica Corona, Francesco Corona, Giancarlo Coghe, Maria G Marrosu, Alberto Concu, Eleonora Cocco, Elisabetta Marongiu, Antonio Crisafulli
Patients with multiple sclerosis (MS) have an increased systemic vascular resistance (SVR) response during the metaboreflex. It has been hypothesized that this is the consequence of a sedentary lifestyle secondary to MS. The purpose of this study was to discover whether a 6-month training program could reverse this hemodynamic dysregulation. Patients were randomly assigned to one of the following two groups: the intervention group (MSIT, n = 11), who followed an adapted training program; and the control group (MSCTL, n = 10), who continued with their sedentary lifestyle...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27892865/co-occurrence-of-a-metastatic-mammary-liposarcoma-and-an-ovarian-sex-cord-stromal-tumor-in-a-dog
#5
M Polinas, G P Burrai, V Marras, R Ariu, M T Zedda, S Pau, E Antuofermo
Sarcoma arising in the mammary gland is a rare tumor in dogs, and primary liposarcoma with metastatic behavior has never been previously reported among canine mammary tumors. A 14-year old female poodle had a mammary mass diagnosed as pleomorphic liposarcoma. Two years following surgical removal, the tumor recurred in the mammary gland with lymph node metastases. In addition, a sex-cord stromal tumor was identified in the ovary. Immunohistochemistry was performed on both tumors that were positive for oestrogen and progesterone receptors...
October 13, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27892553/photochemical-co2-reduction-in-water-using-a-co-immobilised-nickel-catalyst-and-a-visible-light-sensitiser
#6
Gaia Neri, Mark Forster, James J Walsh, C M Robertson, T J Whittles, Pau Farràs, Alexander J Cowan
A dye-sensitised CO2 reduction photocatalyst that operates in water is reported. Transient spectroscopy demonstrates that the facile co-immobilisation of a Ru dye and a Ni CO2 reduction electrocatalyst enables efficient on-particle electron transfer leading to photocatalytic activity that greatly exceeds the equivalent solution based system.
November 28, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27889205/structural-analysis-of-multi-component-amyloid-systems-by-chemometric-saxs-data-decomposition
#7
Fátima Herranz-Trillo, Minna Groenning, Andreas van Maarschalkerweerd, Romà Tauler, Bente Vestergaard, Pau Bernadó
Formation of amyloids is the hallmark of several neurodegenerative pathologies. Structural investigation of these complex transformation processes poses significant experimental challenges due to the co-existence of multiple species. The additive nature of small-angle X-ray scattering (SAXS) data allows for probing the evolution of these mixtures of oligomeric states, but the decomposition of SAXS data into species-specific spectra and relative concentrations is burdened by ambiguity. We present an objective SAXS data decomposition method by adapting the multivariate curve resolution alternating least squares (MCR-ALS) chemometric method...
November 9, 2016: Structure
https://www.readbyqxmd.com/read/27888629/inhibition-of-bcr-signaling-using-the-syk-inhibitor-tak-659-prevents-stroma-mediated-signaling-in-chronic-lymphocytic-leukemia-cells
#8
Noelia Purroy, Júlia Carabia, Pau Abrisqueta, Leire Egia, Meritxell Aguiló, Cecilia Carpio, Carles Palacio, Marta Crespo, Francesc Bosch
Proliferation and survival of chronic lymphocytic leukemia (CLL) cells depend on microenvironmental signals coming from lymphoid organs. One of the key players involved in the crosstalk between CLL cells and the microenvironment is the B-cell receptor (BCR). Syk protein, a tyrosine kinase essential for BCR signaling, is therefore a rational candidate for targeted therapy in CLL. Against this background, we tested the efficacy of the highly specific Syk inhibitor TAK-659 in suppressing the favorable signaling derived from the microenvironment...
November 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27886508/immunization-and-targeted-destruction-of-networks-using-explosive-percolation
#9
Pau Clusella, Peter Grassberger, Francisco J Pérez-Reche, Antonio Politi
A new method ("explosive immunization") is proposed for immunization and targeted destruction of networks. It combines the explosive percolation (EP) paradigm with the idea of maintaining a fragmented distribution of clusters. The ability of each node to block the spread of an infection (or to prevent the existence of a large cluster of connected nodes) is estimated by a score. The algorithm proceeds by first identifying low score nodes that should not be vaccinated or destroyed, analogously to the links selected in EP if they do not lead to large clusters...
November 11, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27886230/controlling-the-electromagnetic-field-confinement-with-metamaterials
#10
Jordi Bonache, Gerard Zamora, Ferran Paredes, Simone Zuffanelli, Pau Aguilà, Ferran Martín
The definition of a precise illumination region is essential in many applications where the electromagnetic field should be confined in some specific volume. By using conventional structures, it is difficult to achieve an adequate confinement distance (or volume) with negligible levels of radiation leakage beyond it. Although metamaterial structures and metasurfaces are well-known to provide high controllability of their electromagnetic properties, this feature has not yet been applied to solve this problem...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27886166/generation-of-single-photons-with-highly-tunable-wave-shape-from-a-cold-atomic-ensemble
#11
Pau Farrera, Georg Heinze, Boris Albrecht, Melvyn Ho, Matías Chávez, Colin Teo, Nicolas Sangouard, Hugues de Riedmatten
The generation of ultra-narrowband, pure and storable single photons with widely tunable wave shape is an enabling step toward hybrid quantum networks requiring interconnection of remote disparate quantum systems. It allows interaction of quantum light with several material systems, including photonic quantum memories, single trapped ions and opto-mechanical systems. Previous approaches have offered a limited tuning range of the photon duration of at most one order of magnitude. Here we report on a heralded single photon source with controllable emission time based on a cold atomic ensemble, which can generate photons with temporal durations varying over three orders of magnitude up to 10 μs without a significant change of the readout efficiency...
November 25, 2016: Nature Communications
https://www.readbyqxmd.com/read/27875187/physics-based-visual-characterization-of-molecular-interaction-forces
#12
Pedro Hermosilla, Jorge Estrada, Victor Guallar, Timo Ropinski, Alvar Vinacua, Pere-Pau Vazquez
Molecular simulations are used in many areas of biotechnology, such as drug design and enzyme engineering. Despite the development of automatic computational protocols, analysis of molecular interactions is still a major aspect where human comprehension and intuition are key to accelerate, analyze, and propose modifications to the molecule of interest. Most visualization algorithms help the users by providing an accurate depiction of the spatial arrangement: the atoms involved in inter-molecular contacts. There are few tools that provide visual information on the forces governing molecular docking...
January 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27872015/self-hardening-and-thermoresponsive-alpha-tricalcium-phosphate-pluronic-pastes
#13
Yassine Maazouz, Edgar B Montufar, Julien Malbert, Montserrat Espanol, Maria-Pau Ginebra
: Although calcium phosphate cements (CPCs) are used for bone regeneration in a wide range of clinical applications, various physicochemical phenomena are known to hinder their potential use in minimally invasive surgery or in highly vascularized surgical sites, mainly because of their lack of injectability or their low washout resistance. The present work shows that the combination of CPCs with an inverse-thermoresponsive hydrogel is a good strategy for finely tuning the cohesive and rheological properties of CPCs to achieve clinical acceptable injectability to prevent phase separation during implantation and cohesion to avoid washout of the paste...
November 18, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27867069/statistical-study-on-bracket-debonding-rate-with-the-win-lingual-technique
#14
Laetitia Pau-Bruchet, Christelle Reynes, Robert Sabatier, Catherine Galletti
The aim of this study is to present the results of a statistical inquiry measuring the bracket debonding rate using the WIN lingual technique. This inquiry was performed in the Odontology Unit at the Rothschild Hospital in the framework of the Lingual Orthodontics University Diploma at Paris VII university. Results were gathered by 8 orthodontic practitioners during two years of training from all their patients treated with the WIN lingual technique. The sample study comprised 33 patients treated exclusively with the WIN lingual technique...
November 17, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27867067/%C3%A3-tude-statistique-sur-le-taux-de-d%C3%A3-collement-des-attaches-en-technique-linguale-win
#15
Laetitia Pau-Bruchet, Christelle Reynes, Robert Sabatier, Catherine Galletti
No abstract text is available yet for this article.
November 17, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27863955/the-blueprint-data-analysis-portal
#16
José María Fernández, Victor de la Torre, David Richardson, Romina Royo, Montserrat Puiggròs, Valentí Moncunill, Stamatina Fragkogianni, Laura Clarke, Paul Flicek, Daniel Rico, David Torrents, Enrique Carrillo de Santa Pau, Alfonso Valencia
The impact of large and complex epigenomic datasets on biological insights or clinical applications is limited by the lack of accessibility by easy, intuitive, and fast tools. Here, we describe an epigenomics comparative cyber-infrastructure (EPICO), an open-access reference set of libraries to develop comparative epigenomic data portals. Using EPICO, large epigenome projects can make available their rich datasets to the community without requiring specific technical skills. As a first instance of EPICO, we implemented the BLUEPRINT Data Analysis Portal (BDAP)...
November 23, 2016: Cell Systems
https://www.readbyqxmd.com/read/27863252/the-allelic-landscape-of-human-blood-cell-trait-variation-and-links-to-common-complex-disease
#17
William J Astle, Heather Elding, Tao Jiang, Dave Allen, Dace Ruklisa, Alice L Mann, Daniel Mead, Heleen Bouman, Fernando Riveros-Mckay, Myrto A Kostadima, John J Lambourne, Suthesh Sivapalaratnam, Kate Downes, Kousik Kundu, Lorenzo Bomba, Kim Berentsen, John R Bradley, Louise C Daugherty, Olivier Delaneau, Kathleen Freson, Stephen F Garner, Luigi Grassi, Jose Guerrero, Matthias Haimel, Eva M Janssen-Megens, Anita Kaan, Mihir Kamat, Bowon Kim, Amit Mandoli, Jonathan Marchini, Joost H A Martens, Stuart Meacham, Karyn Megy, Jared O'Connell, Romina Petersen, Nilofar Sharifi, Simon M Sheard, James R Staley, Salih Tuna, Martijn van der Ent, Klaudia Walter, Shuang-Yin Wang, Eleanor Wheeler, Steven P Wilder, Valentina Iotchkova, Carmel Moore, Jennifer Sambrook, Hendrik G Stunnenberg, Emanuele Di Angelantonio, Stephen Kaptoge, Taco W Kuijpers, Enrique Carrillo-de-Santa-Pau, David Juan, Daniel Rico, Alfonso Valencia, Lu Chen, Bing Ge, Louella Vasquez, Tony Kwan, Diego Garrido-Martín, Stephen Watt, Ying Yang, Roderic Guigo, Stephan Beck, Dirk S Paul, Tomi Pastinen, David Bujold, Guillaume Bourque, Mattia Frontini, John Danesh, David J Roberts, Willem H Ouwehand, Adam S Butterworth, Nicole Soranzo
Many common variants have been associated with hematological traits, but identification of causal genes and pathways has proven challenging. We performed a genome-wide association analysis in the UK Biobank and INTERVAL studies, testing 29.5 million genetic variants for association with 36 red cell, white cell, and platelet properties in 173,480 European-ancestry participants. This effort yielded hundreds of low frequency (<5%) and rare (<1%) variants with a strong impact on blood cell phenotypes. Our data highlight general properties of the allelic architecture of complex traits, including the proportion of the heritable component of each blood trait explained by the polygenic signal across different genome regulatory domains...
November 17, 2016: Cell
https://www.readbyqxmd.com/read/27862578/rapid-postglacial-diversification-and-long-term-stasis-within-the-songbird-genus-junco-phylogeographic-and-phylogenomic-evidence
#18
Guillermo Friis, Pau Aleixandre, Ricardo Rodríguez-Estrella, Adolfo G Navarro-Sigüenza, Borja Milá
Natural systems composed of closely-related taxa that vary in the degree of phenotypic divergence and geographic isolation, provide an opportunity to investigate the rate of phenotypic diversification and the relative roles of selection and drift in driving lineage formation. The genus Junco (Aves: Emberizidae) of North America includes parapatric northern forms that are markedly divergent in plumage pattern and color, in contrast to geographically isolated southern populations in remote areas that show moderate phenotypic divergence...
November 14, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27851975/cd8-t-cells-from-human-neonates-are-biased-toward-an-innate-immune-response
#19
Ariel O Galindo-Albarrán, Oscar H López-Portales, Darely Y Gutiérrez-Reyna, Otoniel Rodríguez-Jorge, José Antonio Sánchez-Villanueva, Oscar Ramírez-Pliego, Aurélie Bergon, Béatrice Loriod, Hélène Holota, Jean Imbert, Armando Hernández-Mendoza, Pierre Ferrier, Enrique Carrillo-de Santa Pau, Alfonso Valencia, Salvatore Spicuglia, M Angélica Santana
To better understand why human neonates show a poor response to intracellular pathogens, we compared gene expression and histone modification profiles of neonatal naive CD8(+) T cells with that of their adult counterparts. We found that neonatal lymphocytes have a distinct epigenomic landscape associated with a lower expression of genes involved in T cell receptor (TCR) signaling and cytotoxicity and a higher expression of genes involved in the cell cycle and innate immunity. Functional studies corroborated that neonatal CD8(+) T cells are less cytotoxic, transcribe antimicrobial peptides, and produce reactive oxygen species...
November 15, 2016: Cell Reports
https://www.readbyqxmd.com/read/27837280/thr105ile-rs11558538-polymorphism-in-the-histamine-1-methyl-transferase-hnmt-gene-and-risk-for-restless-legs-syndrome
#20
Félix Javier Jiménez-Jiménez, Elena García-Martín, Hortensia Alonso-Navarro, Carmen Martínez, Martín Zurdo, Laura Turpín-Fenoll, Jorge Millán-Pascual, Teresa Adeva-Bartolomé, Esther Cubo, Francisco Navacerrada, Ana Rojo-Sebastián, Lluisa Rubio, Sara Ortega-Cubero, Pau Pastor, Marisol Calleja, José Francisco Plaza-Nieto, Belén Pilo-de-la-Fuente, Margarita Arroyo-Solera, Esteban García-Albea, José A G Agúndez
A recent meta-analysis suggests an association between the rs11558538 single nucleotide polymorphism in the histamine-N-methyl-transferase (HNMT) gene and the risk for Parkinson's disease. Based on the possible relationship between PD and restless legs syndrome (RLS), we tried to establish whether rs11558538 SNP is associated with the risk for RLS. We studied the genotype and allelic variant frequencies of HNMT rs11558538 SNP 205 RLS patients and 410 healthy controls using a TaqMan assay. The frequencies of the HNMT rs11558538 genotypes allelic variants were similar between RLS patients and controls, and were not influenced by gender, family history of RLS, or RLS severity...
November 11, 2016: Journal of Neural Transmission
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