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https://www.readbyqxmd.com/read/28339750/downstream-overdrive-pacing-and-intracardiac-concealed-fusion-to-guide-rapid-identification-of-atrial-tachycardia-after-atrial-fibrillation-ablation
#1
Chirag R Barbhaiya, Samuel H Baldinger, Saurabh Kumar, Jason S Chinitz, Alan D Enriquez, Roy John, William G Stevenson, Gregory F Michaud
Aims: Atrial tachycardia (AT) related to atrial fibrillation (AF) ablation frequently poses a diagnostic challenge. Downstream overdrive pacing (DOP) can be used to rapidly detect reentry and assess proximity of a pacing site to an AT circuit or focus. We hypothesized that systematic DOP using multielectrode catheters would facilitate AT mapping. Methods and results: DOP identified constant fusion when the post-pacing interval (PPI)-tachycardia cycle length (TCL) <40 ms and stimulus to adjacent upstream atrial electrogram interval >75% of TCL...
February 17, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339085/integrated-analysis-of-mrna-and-mirna-expression-profiles-in-pancreatic-ductal-adenocarcinoma
#2
Hongwei Sun, Liang Zhao, Kehua Pan, Zhao Zhang, Mengtao Zhou, Guoquan Cao
In the present study, to investigate the potential molecular mechanism of pancreatic ductal adenocarcinoma (PDAC), mRNA and miRNA expression profiles were integrated for systematic analysis. Results showed that a total of 76 common differentially expressed genes (DEGs) were identified from 2 mRNA expression profiles that contained 39 tumor and 15 normal samples. Notably, the tumor and normal samples were able to be clearly classified into 4 groups based on the DEGs. mRNA‑miRNA regulation network analysis indicated that 22 out of the 76 DEGs including MUC4, RRM2 and CCL2 are regulated by 5 reported miRNAs...
March 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28338834/comparative-genomics-of-microsporidian-genomes-reveals-a-minimal-non-coding-rna-set-and-new-insights-for-transcription-in-minimal-eukaryotic-genomes
#3
Abdel Belkorchia, Jean-François Pombert, Valérie Polonais, Nicolas Parisot, Frédéric Delbac, Jean-François Brugère, Pierre Peyret, Christine Gaspin, Eric Peyretaillade
Microsporidia are ubiquitous intracellular pathogens whose opportunistic nature led to their increased recognition with the rise of the AIDS pandemic. As the RNA world was largely unexplored in this parasitic lineage, we developed a dedicated in silico methodology to carry out exhaustive identification of ncRNAs across the Encephalitozoon and Nosema genera. Thus, the previously missing U1 small nuclear RNA (snRNA) and small nucleolar RNAs (snoRNAs) targeting only the LSU rRNA were highlighted and were further validated using 5' and 3'RACE-PCR experiments...
February 28, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/28338594/the-association-of-non-accidental-trauma-with-historical-factors-exam-findings-and-diagnostic-testing-during-the-initial-trauma-evaluation
#4
Mauricio A Escobar, Marc Auerbach, Katherine Flynn-O'Brien, Gunjan Tiyyagura, Matthew A Borgman, Susan J Duffy, Kelly Falcone, Rita Burke, John M Cox, Sabine Maguire
Early identification of non-accidental trauma (NAT) is a critical component of pediatric trauma care. Literature searches were conducted related to the association of NAT with seven key areas: history, exam findings (burns, oral trauma, bruising) and imaging (fractures, abdominal and brain injuries). When available, odds ratios (OR) with 95% confidence intervals (CI) for associations with NAT are presented. Systematic reviews have been published in six of the seven key areas and are described. The operational definition of NAT was widely variable across studies, prohibiting meta-analysis...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28338170/-clinical-research-progress-of-mesenteric-internal-hernia-after-roux-en-y-reconstruction
#5
Zhengrong Xu, Wenjun Guo
Postoperative internal hernia is a rare clinical complication which often occurs after digestive tract reconstruction. Roux-en-Y anastomosis is a common type of digestive tract reconstruction. Internal hernia after Roux-en-Y reconstruction, which occurs mainly in the mesenteric defect caused by incomplete closure of mesenteric gaps in the process of digestive tract reconstruction, is systematically called, in our research, as mesenteric internal hernia after Roux-en-Y reconstruction. Such internal hernia can be divided, according to the different structures of mesentric defect, into 3 types: the type of mesenteric defect at the jejunojejunostomy (J type), the type of Petersen's defect (P type), and the type of mesenteric defect in the transverse mesocolon (M type)...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28338003/directional-phonon-suppression-function-as-a-tool-for-the-identification-of-ultralow-thermal-conductivity-materials
#6
Giuseppe Romano, Alexie M Kolpak
Boundary-engineering in nanostructures has the potential to dramatically impact the development of materials for high- efficiency conversion of thermal energy directly into electricity. In particular, nanostructuring of semiconductors can lead to strong suppression of heat transport with little degradation of electrical conductivity. Although this combination of material properties is promising for thermoelectric materials, it remains largely unexplored. In this work, we introduce a novel concept, the directional phonon suppression function, to unravel boundary-dominated heat transport in unprecedented detail...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337403/an-expanded-conceptual-framework-for-solution-focused-management-of-chemical-pollution-in-european-waters
#7
John Munthe, Eva Brorström-Lundén, Magnus Rahmberg, Leo Posthuma, Rolf Altenburger, Werner Brack, Dirk Bunke, Guy Engelen, Bernd Manfred Gawlik, Jos van Gils, David López Herráez, Tomas Rydberg, Jaroslav Slobodnik, Annemarie van Wezel
BACKGROUND: This paper describes a conceptual framework for solutions-focused management of chemical contaminants built on novel and systematic approaches for identifying, quantifying and reducing risks of these substances. METHODS: The conceptual framework was developed in interaction with stakeholders representing relevant authorities and organisations responsible for managing environmental quality of water bodies. Stakeholder needs were compiled via a survey and dialogue...
2017: Environmental Sciences Europe
https://www.readbyqxmd.com/read/28336542/seten-a-tool-for-systematic-identification-and-comparison-of-processes-phenotypes-and-diseases-associated-with-rna-binding-proteins-from-condition-specific-clip-seq-profiles
#8
Gungor Budak, Rajneesh Srivastava, Sarath Chandra Janga
RNA-binding proteins (RBPs) control the regulation of gene expression in eukaryotic genomes at post-transcriptional level by binding to their cognate RNAs. Although several variants of CLIP (crosslinking and immunoprecipitation) protocols are currently available to study the global protein-RNA interaction landscape at single nucleotide resolution in a cell, currently there are very few tools which can facilitate understanding and dissecting the functional associations of RBPs from the resulting binding maps...
March 23, 2017: RNA
https://www.readbyqxmd.com/read/28336194/screening-medical-patients-for-depression-lessons-from-a-national-program-in-cancer-clinics
#9
Jane Walker, Marta Wanat, Josephine Fielding, Paul Martin, Ariane Petit, Katy Burke, Michael Sharpe
BACKGROUND: Screening has been recommended to improve the identification of depression in medical patients. There is, therefore, a need for useful practical information on how to successfully implement large-scale depression screening in medical clinics. OBJECTIVE: To describe the practical lessons learned from our experience of implementing a large-scale depression screening program in cancer clinics throughout Scotland, UK. METHOD: Reflective review based on the experience of the screening team and records of the iterative development of the program...
January 9, 2017: Psychosomatics
https://www.readbyqxmd.com/read/28335739/identification-of-long-non-coding-transcripts-with-feature-selection-a-comparative-study
#10
Giovanna M M Ventola, Teresa M R Noviello, Salvatore D'Aniello, Antonietta Spagnuolo, Michele Ceccarelli, Luigi Cerulo
BACKGROUND: The unveiling of long non-coding RNAs as important gene regulators in many biological contexts has increased the demand for efficient and robust computational methods to identify novel long non-coding RNAs from transcripts assembled with high throughput RNA-seq data. Several classes of sequence-based features have been proposed to distinguish between coding and non-coding transcripts. Among them, open reading frame, conservation scores, nucleotide arrangements, and RNA secondary structure have been used with success in literature to recognize intergenic long non-coding RNAs, a particular subclass of non-coding RNAs...
March 23, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28335608/superhydrophobic-breakdown-on-nanostructured-surfaces-characterized-by-in-situ-atr-ftir
#11
Nandi Vrancken, Stefanie Sergeant, Guy Vereecke, Geert Doumen, Frank Holsteyns, Herman Terryn, Stefan De Gendt, XiuMei Xu
In situ characterization of the underwater stability of superhydrophobic micro- and nanostructured surfaces is important for the development of self-cleaning and anti-fouling materials. In this work, we demonstrate a novel ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy) based method for large-area wetting characterization of silicon nanopillars. When air is present in between the structures, as is characteristic of the Cassie-Baxter state, the relative intensities of the water bands in the absorption spectrum are changed due to the wavelength-dependent attenuation of the evanescent wave...
March 24, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28334753/alcohol-screening-among-young-people-a-prospective-study-from-the-swiss-sentinel-surveillance-system-sentinella-of-physicians-a-priori-opinions
#12
Coralie Wenger-Bonny, Adjua Alexandra N'goran, Jérôme Pasquier, Charles Dvorak, Dagmar M Haller, Lilli Herzig
Background.: Systematic screening for excessive alcohol use among young people is recommended but rarely implemented. Family practitioners tend to select patients for screening, based on their preliminary subjective opinions, which may be biased. Objective.: To evaluate the ability of family practitioners to identify excessive alcohol use among young people prior to screening them. Methods.: This prospective study was conducted through Sentinella, an epidemiological network involving 150 family practitioners across Switzerland...
February 22, 2017: Family Practice
https://www.readbyqxmd.com/read/28334215/systematic-inference-of-functional-phosphorylation-events-in-yeast-metabolism
#13
Yu Chen, Yonghong Wang, Jens Nielsen
Motivation: Protein phosphorylation is a post-translational modification that affects proteins by changing their structure and conformation in a rapid and reversible way, and it is an important mechanism for metabolic regulation in cells. Phosphoproteomics enables high-throughput identification of phosphorylation events on metabolic enzymes, but identifying functional phosphorylation events still requires more detailed biochemical characterization. Therefore, development of computational methods for investigating unknown functions of a large number of phosphorylation events identified by phosphoproteomics has received increased attention...
March 2, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28334140/circular-rna-identification-based-on-multiple-seed-matching
#14
Yuan Gao, Jinyang Zhang, Fangqing Zhao
Computational detection methods have been widely used in studies on the biogenesis and the function of circular RNAs (circRNAs). However, all of the existing tools showed disadvantages on certain aspects of circRNA detection. Here, we propose an improved multithreading detection tool, CIRI2, which used an adapted maximum likelihood estimation based on multiple seed matching to identify back-spliced junction reads and to filter false positives derived from repetitive sequences and mapping errors. We established objective assessment criteria based on real data from RNase R-treated samples and systematically compared 10 circular detection tools, which demonstrated that CIRI2 outperformed its previous version CIRI and all other widely used tools, featured with remarkably balanced sensitivity, reliability, duration and RAM usage...
February 28, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28334105/biojava-modfinder-identification-of-protein-modifications-in-3d-structures-from-the-protein-data-bank
#15
Jianjiong Gao, Andreas Prlic, Chunxiao Bi, Wolfgang F Bluhm, Dimitris Dimitropoulos, Dong Xu, Philip E Bourne, Peter W Rose
Summary: We developed a new software tool, BioJava-ModFinder, for identifying protein modifications observed in 3D structures archived in the Protein Data Bank (PDB). Information on more than 400 types of protein modifications were collected and curated from annotations in PDB, RESID, and PSI-MOD. We divided these modifications into three categories: modified residues, attachment modifications, and cross-links. We have developed a systematic method to identify these modifications in 3D protein structures...
February 17, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28331987/hypertension-up-to-date-sprint-to-spyral
#16
REVIEW
Saarraaken Kulenthiran, Sebastian Ewen, Michael Böhm, Felix Mahfoud
Hypertension is the most common chronic cardiovascular condition with increasing prevalence all over the world. Treatment of patients at risk requires a multimodal therapeutic concept to adjust blood pressure, including systematic identification of secondary causes of hypertension or pseudo-resistance, lifestyle modification, polypharmacy, and as well as accompanying risk factors and comorbidities. The present review discusses recent studies on patients with increased cardiovascular risk potentially influencing future treatment strategies...
March 22, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28331962/sex-combs-reduced-scr-regulatory-region-of-drosophila-revisited
#17
Juan M Calvo-Martín, Montserrat Papaceit, Carmen Segarra
The Hox gene Sex combs reduced (Scr) is responsible for the differentiation of the labial and prothoracic segments in Drosophila. Scr is expressed in several specific tissues throughout embryonic development, following a complex path that must be coordinated by an equally complex regulatory region. Although some cis-regulatory modules (CRMs) have been identified in the Scr regulatory region (~75 kb), there has been no detailed and systematic study of the distinct regulatory elements present within this region...
March 22, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28331613/systematic-evaluation-of-immune-regulation-and-modulation
#18
REVIEW
David F Stroncek, Lisa H Butterfield, Michael A Cannarile, Madhav V Dhodapkar, Tim F Greten, Jean Charles Grivel, David R Kaufman, Heidi H Kong, Firouzeh Korangy, Peter P Lee, Francesco Marincola, Sergio Rutella, Janet C Siebert, Giorgio Trinchieri, Barbara Seliger
Cancer immunotherapies are showing promising clinical results in a variety of malignancies. Monitoring the immune as well as the tumor response following these therapies has led to significant advancements in the field. Moreover, the identification and assessment of both predictive and prognostic biomarkers has become a key component to advancing these therapies. Thus, it is critical to develop systematic approaches to monitor the immune response and to interpret the data obtained from these assays. In order to address these issues and make recommendations to the field, the Society for Immunotherapy of Cancer reconvened the Immune Biomarkers Task Force...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28329770/antigen-presentation-profiling-reveals-recognition-of-lymphoma-immunoglobulin-neoantigens
#19
Michael S Khodadoust, Niclas Olsson, Lisa E Wagar, Ole A W Haabeth, Binbin Chen, Kavya Swaminathan, Keith Rawson, Chih Long Liu, David Steiner, Peder Lund, Samhita Rao, Lichao Zhang, Caleb Marceau, Henning Stehr, Aaron M Newman, Debra K Czerwinski, Victoria E H Carlton, Martin Moorhead, Malek Faham, Holbrook E Kohrt, Jan Carette, Michael R Green, Mark M Davis, Ronald Levy, Joshua E Elias, Ash A Alizadeh
Cancer somatic mutations can generate neoantigens that distinguish malignant from normal cells. However, the personalized identification and validation of neoantigens remains a major challenge. Here we discover neoantigens in human mantle-cell lymphomas by using an integrated genomic and proteomic strategy that interrogates tumour antigen peptides presented by major histocompatibility complex (MHC) class I and class II molecules. We applied this approach to systematically characterize MHC ligands from 17 patients...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28326141/-z-selective-takai-olefination-of-salicylaldehydes
#20
Stephen M Geddis, Caroline E Hagerman, Warren R J D Galloway, Hannah F Sore, Jonathan M Goodman, David R Spring
The Takai olefination (or Takai reaction) is a method for the conversion of aldehydes to vinyl iodides, and has seen widespread implementation in organic synthesis. The reaction is usually noted for its high (E)-selectivity; however, herein we report the highly (Z)-selective Takai olefination of salicylaldehyde derivatives. Systematic screening of related substrates led to the identification of key factors responsible for this surprising inversion of selectivity, and enabled the development of a modified mechanistic model to rationalise these observations...
2017: Beilstein Journal of Organic Chemistry
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