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https://www.readbyqxmd.com/read/28732309/zebularine-induces-replication-dependent-double-strand-breaks-which-are-preferentially-repaired-by-homologous-recombination
#1
Manuel Luis Orta, Nuria Pastor, Estefanía Burgos-Morón, Inmaculada Domínguez, José Manuel Calderón-Montaño, Carlos Huertas Castaño, Miguel López-Lázaro, Thomas Helleday, Santiago Mateos
Zebularine is a second-generation, highly stable hydrophilic inhibitor of DNA methylation with oral bioavailability that preferentially target cancer cells. It acts primarily as a trap for DNA methyl transferases (DNMTs) protein by forming covalent complexes between DNMT protein and zebularine-substrate DNA. It's well documented that replication-blocking DNA lesions can cause replication fork collapse and thereby to the formation of DNA double-strand breaks (DSB). DSB are dangerous lesions that can lead to potentially oncogenic genomic rearrangements or cell death...
July 12, 2017: DNA Repair
https://www.readbyqxmd.com/read/28732146/medicago-truncatula-zinc-iron-permease6-provides-zinc-to-rhizobia-infected-nodule-cells
#2
Isidro Abreu, Ángela Saéz, Rosario Castro-Rodríguez, Viviana Escudero, Benjamín Rodríguez-Haas, Marta Senovilla, Camille Larue, Daniel Grolimund, Manuel Tejada-Jiménez, Juan Imperial, Manuel González-Guerrero
Zinc is a micronutrient required for symbiotic nitrogen fixation. It has been proposed that in model legume Medicago truncatula, zinc is delivered by the root vasculature into the nodule and released in the infection/differentiation zone. There, transporters must introduce this element into rhizobia-infected cells to metallate the apoproteins that use zinc as a cofactor. MtZIP6 (Medtr4g083570) is a M. truncatula Zinc-Iron Permease (ZIP) that is expressed only in roots and nodules, with the highest expression levels in the infection/differentiation zone...
July 21, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28732064/mechanisms-of-aggregation-in-an-ant-tended-treehopper-attraction-to-mutualists-is-balanced-by-conspecific-competition
#3
Manuel A Morales, Andrew G Zink
Understanding the spatial structure of populations and communities has been a dominant focus of ecological research, and spatial structure is increasingly seen as critical for understanding population dynamics. Habitat (or host) preference is a proximate mechanism that can generate aggregation or overdispersion, lending insight into the ultimate consequences of observed spatial distributions. Publilia concava is a univoltine phloem-feeding insect that forms mutualistic associations with ants, which consume honeydew and protect treehoppers from predation...
2017: PloS One
https://www.readbyqxmd.com/read/28732017/disease-severity-in-patients-with-visceral-leishmaniasis-is-not-altered-by-co-infection-with-intestinal-parasites
#4
Fitsumbrhan Tajebe, Mulusew Getahun, Emebet Adem, Asrat Hailu, Mulualem Lemma, Helina Fikre, John Raynes, Aschalew Tamiru, Zemenay Mulugeta, Ermias Diro, Frederic Toulza, Ziv Shkedy, Tadesse Ayele, Manuel Modolell, Markus Munder, Ingrid Müller, Yegnasew Takele, Pascale Kropf
Visceral leishmaniasis (VL) is a neglected tropical disease that affects the poorest communities and can cause substantial morbidity and mortality. Visceral leishmaniasis is characterized by the presence of Leishmania parasites in the spleen, liver and bone marrow, hepatosplenomegaly, pancytopenia, prolonged fever, systemic inflammation and low body mass index (BMI). The factors impacting on the severity of VL are poorly characterized. Here we performed a cross-sectional study to assess whether co-infection of VL patients with intestinal parasites influences disease severity, assessed with clinical and haematological data, inflammation, cytokine profiles and BMI...
July 21, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28731747/tuning-paramagnetic-spin-excitations-of-single-adatoms
#5
Julen Ibañez-Azpiroz, Manuel Dos Santos Dias, Benedikt Schweflinghaus, Stefan Blügel, Samir Lounis
We predict the existence of paramagnetic spin excitations (PSE) in nonmagnetic single adatoms. Our calculations demonstrate that PSE develop a well-defined structure in the meV region when the adatom's Stoner criterion for magnetism is close to the critical point. We further reveal a subtle tunability and enhancement of PSE by external magnetic fields. Finally, we show how PSE can be detected as moving steps in the dI/dV signal of inelastic scanning tunneling spectroscopy, opening a potential route for experimentally accessing electronic properties of nonmagnetic adatoms, such as the Stoner parameter...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28731689/dinuclear-coordination-compounds-based-on-a-5-nitropicolinic-carboxylate-ligand-with-single-molecule-magnet-behavior
#6
Álvaro Raya-Barón, Itziar Oyarzabal, Francisco M Arrabal-Campos, José Manuel Seco, Antonio Rodríguez-Diéguez, Ignacio Fernández
Isostructural dinuclear dysprosium and yttrium coordination compounds based on the 5-nitropicolinic carboxylate ligand were synthesized and characterized. The formation of these air-stable complexes is achieved via solvothermal routes employing water as the reaction solvent. The dysprosium-based complex exhibits single-molecule magnet behavior with frequency dependence of the out-of-phase susceptibility at zero direct-current field. High-resolution mass spectrometry (electrospray ionization) experiments and advanced NMR methods including diffusion NMR techniques were applied on the diamagnetic yttrium analogue and established that these species retained their solid-state structure in solution with hydrodynamic radii of 6...
July 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28731680/nitrilotriacetic-amine-functionalized-polymeric-core-shell-nanoparticles-as-enzyme-immobilization-supports
#7
Dominic Keller, Ana Beloqui, Monica Martínez-Martínez, Manuel Ferrer, Guillaume Delaittre
Nitrilotriacetic amine (NTA) functionalized nanoparticles obtained by aqueous polymerization-induced self-assembly (PISA) are introduced as immobilization supports for polyhistidine-functionalized (His-tagged) enzymes. A novel initiator for nitroxide-mediated polymerization based on the nitroxide SG1 and carrying a protected NTA moiety was first synthesized. Size-exclusion chromatography (SEC) and electrospray ionization mass spectrometry (ESI-MS) proved the ability of this initiator to produce well-defined end-functional vinyl polymers...
July 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28731551/sarcopenia-and-hospitalisation-costs-in-older-adults-a-cross-sectional-study
#8
Ana C Antunes, Daniela A Araújo, Manuel T Veríssimo, Teresa F Amaral
AIM: The impact of sarcopenia on hospitalisation has been under intense investigation; however, little is known about the association between sarcopenia and their costs among hospitalised patients. The aim of the present study was to quantify the association between sarcopenia and hospitalisation costs among older adults. METHODS: A cross-sectional study was conducted in 201 hospitalised older adults in a general hospital. Sarcopenia was identified according to the European Working Group on Sarcopenia in Older People (EWGSOP) criteria...
February 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28731432/multivariate-approach-for-alzheimer-s-disease-detection-using-stationary-wavelet-entropy-and-predator-prey-particle-swarm-optimization
#9
Yudong Zhang, Shuihua Wang, Yuxiu Sui, Ming Yang, Bin Liu, Hong Cheng, Junding Sun, Wenjuan Jia, Preetha Phillips, Juan Manuel Gorriz
BACKGROUND: The number of patients with Alzheimer's disease is increasing rapidly every year. Scholars often use computer vision and machine learning methods to develop an automatic diagnosis system. OBJECTIVE: In this study, we developed a novel machine learning system that can make diagnoses automatically from brain magnetic resonance images. METHODS: First, the brain imaging was processed, including skull stripping and spatial normalization...
July 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28730271/serious-adverse-events-after-hpv-vaccination-a-critical-review-of-randomized-trials-and-post-marketing-case-series
#10
Manuel Martínez-Lavín, Luis Amezcua-Guerra
This article critically reviews HPV vaccine serious adverse events described in pre-licensure randomized trials and in post-marketing case series. HPV vaccine randomized trials were identified in PubMed. Safety data were extracted. Post-marketing case series describing HPV immunization adverse events were reviewed. Most HPV vaccine randomized trials did not use inert placebo in the control group. Two of the largest randomized trials found significantly more severe adverse events in the tested HPV vaccine arm of the study...
July 20, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28729711/an-ecological-and-digital-epidemiology-analysis-on-the-role-of-human-behavior-on-the-2014-chikungunya-outbreak-in-martinique
#11
Benjamin Roche, Béatrice Gaillard, Lucas Léger, Renélise Pélagie-Moutenda, Thomas Sochacki, Bernard Cazelles, Martine Ledrans, Alain Blateau, Didier Fontenille, Manuel Etienne, Frédéric Simard, Marcel Salathé, André Yébakima
Understanding the spatio-temporal dynamics of endemic infections is of critical importance for a deeper understanding of pathogen transmission, and for the design of more efficient public health strategies. However, very few studies in this domain have focused on emerging infections, generating a gap of knowledge that hampers epidemiological response planning. Here, we analyze the case of a Chikungunya outbreak that occurred in Martinique in 2014. Using time series estimates from a network of sentinel practitioners covering the entire island, we first analyze the spatio-temporal dynamics and show that the largest city has served as the epicenter of this epidemic...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729641/the-rhizosphere-microbiome-of-burned-holm-oak-potential-role-of-the-genus-arthrobacter-in-the-recovery-of-burned-soils
#12
Antonio J Fernández-González, Pilar Martínez-Hidalgo, José F Cobo-Díaz, Pablo J Villadas, Eustoquio Martínez-Molina, Nicolás Toro, Susannah G Tringe, Manuel Fernández-López
After a forest wildfire, the microbial communities have a transient alteration in their composition. The role of the soil microbial community in the recovery of an ecosystem following such an event remains poorly understood. Thus, it is necessary to understand the plant-microbe interactions that occur in burned soils. By high-throughput sequencing, we identified the main bacterial taxa of burnt holm-oak rhizosphere, then we obtained an isolate collection of the most abundant genus and its growth promoting activities were characterised...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729547/antarctic-sea-ice-region-as-a-source-of-biogenic-organic-nitrogen-in-aerosols
#13
Manuel Dall'Osto, Jurgita Ovadnevaite, Marco Paglione, David C S Beddows, Darius Ceburnis, Charlotte Cree, Pau Cortés, Marina Zamanillo, Sdena O Nunes, Gonzalo L Pérez, Eva Ortega-Retuerta, Mikhail Emelianov, Dolors Vaqué, Cèlia Marrasé, Marta Estrada, M Montserrat Sala, Montserrat Vidal, Mark F Fitzsimons, Rachael Beale, Ruth Airs, Matteo Rinaldi, Stefano Decesari, Maria Cristina Facchini, Roy M Harrison, Colin O'Dowd, Rafel Simó
Climate warming affects the development and distribution of sea ice, but at present the evidence of polar ecosystem feedbacks on climate through changes in the atmosphere is sparse. By means of synergistic atmospheric and oceanic measurements in the Southern Ocean near Antarctica, we present evidence that the microbiota of sea ice and sea ice-influenced ocean are a previously unknown significant source of atmospheric organic nitrogen, including low molecular weight alkyl-amines. Given the keystone role of nitrogen compounds in aerosol formation, growth and neutralization, our findings call for greater chemical and source diversity in the modelling efforts linking the marine ecosystem to aerosol-mediated climate effects in the Southern Ocean...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729180/symptom-and-quality-of-life-improvement-in-lux-lung-8-an-open-label-phase-iii-study-of-second-line-afatinib-versus-erlotinib-in-patients-with-advanced-squamous-cell-carcinoma-of-the-lung-after-first-line-platinum-based-chemotherapy
#14
Enriqueta Felip, Vera Hirsh, Sanjay Popat, Manuel Cobo, Andrea Fülöp, Charles Dayen, José M Trigo, Richard Gregg, Cornelius F Waller, Jean-Charles Soria, Glenwood D Goss, James Gordon, Bushi Wang, Michael Palmer, Eva Ehrnrooth, Shirish M Gadgeel
INTRODUCTION: In the phase III LUX-Lung 8 trial, afatinib significantly improved progression-free survival (PFS) and overall survival (OS) versus erlotinib in patients with squamous cell carcinoma (SCC) of the lung progressing during or after platinum-based chemotherapy. Patient-reported outcomes (PROs) and health-related quality of life (QoL) in these patients are presented. PATIENTS AND METHODS: Patients (n = 795) were randomized 1:1 to oral afatinib (40 mg/d) or erlotinib (150 mg/d)...
June 23, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28728809/scrofula-in-a-child
#15
Catarina Pereira, Mafalda Cascais, Miguel Félix, Manuel Salgado
No abstract text is available yet for this article.
July 17, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28728801/-muscle-dysmorphia-and-use-of-ergogenics-substances-a-systematic-review
#16
Jaime García-Rodríguez, Georgina Alvarez-Rayón, Jaime Camacho-Ruíz, Adriana Amaya-Hernández, Juan Manuel Mancilla-Díaz
The use of ergogenic substances (UES) is not restricted to achieving a better athletic performance, but also it is a behavior for body changing through muscle development; however, little is known about the relationship between muscle dysmorphia (MD) and UES. Therefore, it was conducted a systematic review of those empirical papers that have studied this relationship over the last decade (2004-2014). First it is highlighted that of the 22 articles analyzed, only 13 explicitly aimed this interest. Besides, although the documented data outlined some relevant aspects such as the existence of a high co-occurrence (60-90%) between MD and UES...
July 2017: Revista Colombiana de Psiquiatría
https://www.readbyqxmd.com/read/28728683/nutritional-intervention-in-acute-heart-failure-patients-with-undernutrition-and-normalbuminemia-a-subgroup-analysis-of-picnic-study
#17
Esmeralda Ramiro-Ortega, Juan L Bonilla-Palomas, Antonio L Gámez-López, Mirian Moreno-Conde, María C López-Ibáñez, Rosa Alhambra-Expósito, Manuel Anguita Sánchez
BACKGROUND & AIMS: Hypoalbuminemia is common in acute heart failure (HF) patients and has been associated with increased hospital mortality and long-term mortality. Undernutrition is a factor causing hypoalbuminemia. The PICNIC study results show that a nutritional intervention in undernourished acute HF patients reduces the risks of all-cause death and of readmission for HF. We aimed to investigate whether the efficacy of a nutritional intervention is consistent among the subgroups of patients with and without hypoalbuminemia...
July 14, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28728389/influence-of-substituting-steam-flaked-corn-for-dry-rolled-corn-on-feedlot-cattle-growth-performance-when-cattle-are-allowed-either-ad-libitum-or-restricted-access-to-the-finishing-diet
#18
Víctor Manuel González-Vizcarra, Alejandro Plascencia, Daniel Ramos-Aviña, Richard Avery Zinn
Objective: The influence of substituting steam-flaked corn (SFC) for dry rolled corn (DRC) on feedlot cattle growth performance and dietary net energy when cattle are allowed either ad libitum or 2-h restricted access to the finishing diet was evaluated. Methods: Treatment effects were tested using 96 crossbred steers (251 ±2 kg) during the initial 56 d of the finishing phase. Cattle were blocked by weight and randomly assigned within blocks to 16 pens (4 pens/treatment)...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727971/congenital-extrahepatic-portosystemic-shunt-abernethy-malformation-type-ib-with-associated-hepatocellular-carcinoma-case-report-and-literature-review
#19
Mark Benedict, Manuel Rodriguez-Davalos, Sukru Emre, Zenta Walther, Raffaella Morotti
Abernethy malformation, also termed congenital portosystemic shunt and congenital absence of portal vein is the result of malformation of the splanchnic venous system. Congenital portosystemic shunts are divided into extra- and intrahepatic shunts. Two shunts have been defined: Type I is characterized by the complete diversion of portal blood into the vena cava with an associated congenital absence of the portal vein. Type II is defined by an intact but diverted portal vein through a side-to-side, extrahepatic connection to the vena cava...
July 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28727732/incidence-of-thromboembolic-events-in-asymptomatic-carriers-of-iga-anti-%C3%A3-2-glycoprotein-i-antibodies
#20
Carlos Tortosa, Oscar Cabrera-Marante, Manuel Serrano, José A Martínez-Flores, Dolores Pérez, David Lora, Luis Morillas, Estela Paz-Artal, José M Morales, Daniel Pleguezuelo, Antonio Serrano
BACKGROUND: The antiphospholipid syndrome (APS) is defined by simultaneous presence of vascular clinical events and antiphospholipid antibodies (aPL). The aPL considered as diagnostics are lupus anticoagulant and antibodies anticardiolipin (aCL) and anti-ß2 glycoprotein-I (aB2GP1). During recent years, IgA aB2GP1 antibodies have been associated with thrombotic events both in patients positive, and mainly negative for other aPL, however its value as a pro-thrombotic risk-factor in asymptomatic patients has not been well defined...
2017: PloS One
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