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https://www.readbyqxmd.com/read/28448571/localization-of-adenovirus-morphogenesis-players-together-with-visualization-of-assembly-intermediates-and-failed-products-favor-a-model-where-assembly-and-packaging-occur-concurrently-at-the-periphery-of-the-replication-center
#1
Gabriela N Condezo, Carmen San Martín
Adenovirus (AdV) morphogenesis is a complex process, many aspects of which remain unclear. In particular, it is not settled where in the nucleus assembly and packaging occur, and whether these processes occur in a sequential or a concerted manner. Here we use immunofluorescence and immunoelectron microscopy (immunoEM) to trace packaging factors and structural proteins at late times post infection by either wildtype virus or a delayed packaging mutant. We show that representatives of all assembly factors are present in the previously recognized peripheral replicative zone, which therefore is the AdV assembly factory...
April 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28448529/a-genome-wide-analysis-of-the-rna-guided-silencing-pathway-in-coffee-reveals-insights-into-its-regulatory-mechanisms
#2
Christiane Noronha Fernandes-Brum, Pâmela Marinho Rezende, Thales Henrique Cherubino Ribeiro, Raphael Ricon de Oliveira, Thaís Cunha de Sousa Cardoso, Laurence Rodrigues do Amaral, Matheus de Souza Gomes, Antonio Chalfun-Junior
microRNAs (miRNAs) are derived from self-complementary hairpin structures, while small-interfering RNAs (siRNAs) are derived from double-stranded RNA (dsRNA) or hairpin precursors. The core mechanism of sRNA production involves DICER-like (DCL) in processing the smallRNAs (sRNAs) and ARGONAUTE (AGO) as effectors of silencing, and siRNA biogenesis also involves action of RNA-Dependent RNA Polymerase (RDR), Pol IV and Pol V in biogenesis. Several other proteins interact with the core proteins to guide sRNA biogenesis, action, and turnover...
2017: PloS One
https://www.readbyqxmd.com/read/28448468/transcriptome-analysis-of-core-dinoflagellates-reveals-a-universal-bias-towards-gc-rich-codons
#3
Ernest Williams, Allen Place, Tsvetan Bachvaroff
Although dinoflagellates are a potential source of pharmaceuticals and natural products, the mechanisms for regulating and producing these compounds are largely unknown because of extensive post-transcriptional control of gene expression. One well-documented mechanism for controlling gene expression during translation is codon bias, whereby specific codons slow or even terminate protein synthesis. Approximately 10,000 annotatable genes from fifteen "core" dinoflagellate transcriptomes along a range of overall guanine and cytosine (GC) content were used for codonW analysis to determine the relative synonymous codon usage (RSCU) and the GC content at each codon position...
April 27, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28447407/wiedemann-rautenstrauch-syndrome-a-phenotype-analysis
#4
Stefano Paolacci, Debora Bertola, José Franco, Shehla Mohammed, Marco Tartaglia, Bernd Wollnik, Raoul C Hennekam
Wiedemann-Rautenstrauch syndrome (WRS) is a neonatal progeroid disorder characterized by growth retardation, lipodystrophy, a distinctive face, and dental anomalies. Patients reported to date demonstrate a remarkable variability in phenotype, which hampers diagnostics. We performed a literature search, and analyzed 51 reported patients, using the originally reported patients as "gold standard." In 15 patients sufficient information and photographic evidence was available to confirm the clinical diagnosis. In 12 patients the diagnosis was suggestive but lack of data prevented a definite diagnosis, and in 24 patients an alternative diagnosis was likely...
April 26, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28442399/the-genome-sequence-of-agrotis-segetum-granulovirus-isolate-agsegv-da-reveals-a-new-betabaculovirus-species-of-a-slow-killing-granulovirus
#5
Gianpiero Gueli Alletti, Marina Eigenbrod, Eric B Carstens, Regina G Kleespies, Johannes A Jehle
The European isolate Agrotis segetum granulovirus DA (AgseGV-DA) is a slow killing, type I granulovirus due to low dose-mortality responses within seven days post infection and a tissue tropism of infection restricted solely to the fat body of infected Agrotis segetum host larvae. The genome of AgseGV-DA was completely sequenced and compared to the whole genome sequences of the Chinese isolates AgseGV-XJ and AgseGV-L1. All three isolates share highly conserved genomes. The AgseGV-DA genome is 131,557 bp in length and encodes for 149 putative open reading frames, including 37 baculovirus core genes and the per os infectivity factor ac110...
April 22, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28440640/nucleic-acid-nanocapsules-for-enzyme-triggered-drug-release
#6
Joseph K Awino, Saketh Gudipati, Alyssa K Hartmann, Joshua J Santiana, Dominic F Cairns-Gibson, Nicole Gomez, Jessica L Rouge
Herein we describe a nucleic acid functionalized nanocapsule in which nucleic acid ligands are assembled and disassembled in the presence of enzymes. The particles are fully degradable in response to esterases due to an embedded ester cross-linker in the particle's core. During synthesis the nanocapsules can be loaded with hydrophobic small molecules and post self-assembly undergo covalent cross-linking using copper catalyzed click chemistry. They can then be functionalized with thiolated DNA through stepwise thiolyne chemistry using UV light irradiation...
April 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28440627/composite-micro-posts-with-high-dry-adhesion-strength
#7
Helen K Minsky, Kevin T Turner
Interfaces with enhanced and tunable adhesion have applications in a broad range of fields, including microtransfer printing of semiconductors, grippers on robots, and component handling in manufacturing. Here, a composite post structure with a stiff core and compliant shell is used to achieve enhanced adhesion under normal loading. Loading the composite structure in shear significantly reduces the effective adhesion strength, thus providing tunability. The composite posts can be used as stamps in microtransfer printing processes or as building blocks of large area tunable surfaces composed of arrays of posts...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28439909/effect-of-thermally%C3%A2-deposited-siloxane-methacrylate-coating-on-bonding-to-glass-fibre-posts
#8
F P Silva, A L Faria-E-Silva, R R Moraes, A O Ogliari, G R Reis, A R F Oliveira, M S Menezes
AIM: To evaluate the alterations promoted by a thermally deposited siloxane-methacrylate coating on the surface of glass-fibre posts and its effect on the bond strength of resin-core materials to the posts. METHODOLOGY: Fibre post surfaces were treated with experimental thermally deposited siloxane-methacrylate coatings or clinically available treatments (i.e., hydrogen peroxide and methylene chloride); non-treated posts were used as controls. The contact angles formed between the post surface and the water/adhesive were measured with a tensiometer...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439740/synthetic-cold-inducible-promoter-enhances-recombinant-protein-accumulation-during-agrobacterium-mediated-transient-expression-in-nicotiana-excelsior-at-chilling-temperatures
#9
I M Gerasymenko, Y V Sheludko
OBJECTIVES: To exploit cold-inducible biochemical processes beneficial for foreign mRNA transcription, translation and storage, as well as protein product stability, during Agrobacterium-mediated transient expression. RESULTS: The efficiency of three different 5'-regulatory sequences to achieve transient expression of the GFP-based reporter gene under chilling conditions (6-8 °C since the 3rd day post inoculation) was compared. We studied the upstream sequences of a cold-inducible Arabidopsis thaliana cor15a gene, the core element of 35S CaMV promoter fused to the TMV omega 5'-UTR, and the synthetic promoter including the 35S core sequence and two binding sites for cold-inducible CBF transcription factors (P_DRE::35S)...
April 24, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28436351/reactivity-to-unpredictable-threat-as-a-treatment-target-for-fear-based-anxiety-disorders
#10
S M Gorka, L Lieberman, H Klumpp, K L Kinney, A E Kennedy, O Ajilore, J Francis, J Duffecy, M G Craske, J Nathan, S Langenecker, S A Shankman, K L Phan
BACKGROUND: Heightened reactivity to unpredictable threat (U-threat) is a core individual difference factor underlying fear-based psychopathology. Little is known, however, about whether reactivity to U-threat is a stable marker of fear-based psychopathology or if it is malleable to treatment. The aim of the current study was to address this question by examining differences in reactivity to U-threat within patients before and after 12-weeks of selective serotonin reuptake inhibitors (SSRIs) or cognitive-behavioral therapy (CBT)...
April 24, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28435741/the-influence-of-clarification-and-threats-on-life-situation-patients-experiences-1-year-after-tsci
#11
Bodil Bjørnshave Noe, Merete Bjerrum, Sanne Angel
INTRODUCTION: The study was conducted at the Spinal Cord Injury Centre of Western Denmark (VCR). The aim of the study was to explore patients' experiences following traumatic spinal cord injury and to identify characteristics of positive versus negative life situation 1 year post discharge from hospital rehabilitation. This was a qualitative study conducted using inductive content analysis. CASE PRESENTATION: In this qualitative study seven patients were interviewed one year after discharge from initial rehabilitation at the VCR...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28434685/influence-of-inhomogeneous-dental-posts-on-stress-distribution-in-tooth-root-and-interfaces-three-dimensional-finite-element-analysis
#12
Mojtaba Mahmoudi, Ali Reza Saidi, Parviz Amini, Maryam Alsadat Hashemipour
STATEMENT OF PROBLEM: In post-core crown restorations, the use of flexible posts concentrates stresses at the dentin and the use of stiff posts concentrates stresses at the interfaces. A class of inhomogeneous materials (called functionally graded materials) has been proposed for posts to resolve the weaknesses of both flexible and rigid posts. PURPOSE: The purpose of this in vitro study was to design an inhomogeneous post and investigate its influence on the stress distribution of post-core crown restorations...
April 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28434464/development-of-a-falls-reduction-yoga-program-for-older-adults-a-pilot-study
#13
Paul D Smith, Paul Mross, Nate Christopher
OBJECTIVES: Work with local rural organizations to develop an evidence-based hatha yoga program intended to improve core strength and balance to reduce falls risk. Feasibility determined by successful recruiting, intervention and evaluation of participants and acceptable frequency of adverse events. DESIGN: Single-arm pilot study. SETTING: Rural Wisconsin town of 4200 people. INTERVENTION: Eight week yoga program with weekly group classes and home yoga practice three times per week...
April 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28434138/dynamic-epr-oximetry-of-changes-in-intracerebral-oxygen-tension-during-induced-thromboembolism
#14
Huagang Hou, Nadeem Khan, Sangeeta Gohain, Clifford J Eskey, Karen L Moodie, Kirk J Maurer, Harold M Swartz, Periannan Kuppusamy
Cerebral tissue oxygenation (oxygen tension, pO2) is a critical parameter that is closely linked to brain metabolism, function, and pathophysiology. In this work, we have used electron paramagnetic resonance oximetry with a deep-tissue multi-site oxygen-sensing probe, called implantable resonator, to monitor temporal changes in cerebral pO2 simultaneously at four sites in a rabbit model of ischemic stroke induced by embolic clot. The pO2 values in healthy brain were not significantly different among the four sites measured over a period of 4 weeks...
April 22, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28430363/cerebrolysin-for-acute-ischaemic-stroke
#15
REVIEW
Liliya Eugenevna Ziganshina, Tatyana Abakumova, Ludivine Vernay
BACKGROUND: Cerebrolysin is a mixture of low-molecular-weight peptides and amino acids derived from pigs' brain tissue, which has potential neuroprotective and neurotrophic properties. It is widely used in the treatment of acute ischaemic stroke in Russia, Eastern Europe, China, and other Asian and post-Soviet countries. OBJECTIVES: To assess the benefits and risks of cerebrolysin for treating acute ischaemic stroke. SEARCH METHODS: In May 2016 we searched the Cochrane Stroke Group Trials Register, CENTRAL, MEDLINE, Embase, Web of Science Core Collection, with Science Citation Index, LILACS, OpenGrey, and a number of Russian Databases...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28427913/predicting-the-stone-composition-of-children-preoperatively-by-hounsfield-unit-detection-on-non-contrast-computed-tomography
#16
Mesut Altan, Burak Çitamak, Ali Cansu Bozaci, Altan Güneş, Hasan Serkan Doğan, Mithat Haliloğlu, Serdar Tekgül
INTRODUCTION: Many studies have been performed on adult patients to reveal the relationship between Hounsfield unit (HU) value and composition of stone, but none have focused on childhood. OBJECTIVE: We aimed to predict stone composition by HU properties in pre-intervention non-contrast computed tomography (NCCT) in children. This could help to orient patients towards more successful interventions. MATERIALS AND METHODS: Data of 94 children, whose pre-intervention NCCT and post-interventional stone analysis were available were included...
March 31, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28426108/mri-assessment-and-outcomes-in-patients-receiving-neoadjuvant-chemotherapy-only-for-primary-rectal-cancer-long-term-results-from-the-gemcad-0801-trial
#17
U B Patel, G Brown, I Machado, J Santos-Cores, C Pericay, E Ballesteros, A Salud, M Isabel-Gil, C Montagut, J Maurel, J Ramón-Ayuso, N Martin, R Estevan, C Fernandez-Martos
Background: Primary chemotherapy has been tested as a possible approach for patients with high risk features but predicted clear mesorectal margins on preoperative MRI assessment. This study investigates the prognostic relevance of baseline and post-treatment MRI and pathology staging in rectal cancer patients undergoing primary chemotherapy. Patients and methods: Forty-six patients with T3 tumour > =2 mm from the mesorectal fascia were prospectively treated with Neoadjuvant Capecitabine, Oxaliplatin and Bevacizumab prior to surgery between 2009 and 2011...
February 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28426042/antibodies-to-h2a-and-h2b-histones-from-the-sera-of-hiv-infected-patients-catalyze-site-specific-degradation-of-these-histones
#18
Svetlana V Baranova, Pavel S Dmitrienok, Nikita V Ivanisenko, Valentina N Buneva, Georgy A Nevinsky
Histones and their post-translational modifications have key roles in chromatin remodeling and gene transcription. Besides intranuclear functions, histones act as damage-associated molecules when they are released into the extracellular space. Administration of histones to animals leads to systemic inflammatory and toxic responses. Autoantibodies with enzymatic activities (abzymes) are distinctive features of some autoimmune and viral diseases. Electrophoretically homogeneous IgGs containing no canonical enzymes were isolated from the sera of HIV-infected patients by chromatography on several affinity sorbents including anti-histone Sepharose...
April 20, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28425221/conceptualizing-movement-by-expert-bobath-instructors-in-neurological-rehabilitation
#19
Julie Vaughan-Graham, Kara Patterson, Karl Zabjek, Cheryl A Cott
RATIONALE, AIMS, AND OBJECTIVES: Movement, a core aspect of physiotherapy practice, and integral to the clinical reasoning process has undergone limited theoretical development. Instead, research has focused on intervention effectiveness embedded within the positivist paradigm. The purpose of this study was to explore how expert neurorehabilitation therapists conceptualize movement as part of their clinical reasoning. METHOD: A qualitative interpretive descriptive approach consisting of stimulated recall using video-recorded treatment sessions and in-depth interviews was used...
April 20, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28423932/comparing-biomechanical-properties-repair-times-and-value-of-common-core-flexor-tendon-repairs
#20
Aakash Chauhan, Patrick Schimoler, Mark C Miller, Alexander Kharlamov, Gregory A Merrell, Bradley A Palmer
BACKGROUND: The aim of the study was to compare biomechanical strength, repair times, and repair values for zone II core flexor tendon repairs. METHODS: A total of 75 fresh-frozen human cadaveric flexor tendons were harvested from the index through small finger and randomized into one of 5 repair groups: 4-stranded cross-stitch cruciate (4-0 polyester and 4-0 braided suture), 4-stranded double Pennington (2-0 knotless barbed suture), 4-stranded Pennington (4-0 double-stranded braided suture), and 6-stranded modified Lim-Tsai (4-0 looped braided suture)...
April 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
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