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https://www.readbyqxmd.com/read/28239752/potential-and-limitations-of-cochrane-reviews-in-pediatric-cardiology-a-systematic-analysis
#1
Martin Poryo, Sara Khosrawikatoli, Hashim Abdul-Khaliq, Sascha Meyer
Evidence-based medicine has contributed substantially to the quality of medical care in pediatric and adult cardiology. However, our impression from the bedside is that a substantial number of Cochrane reviews generate inconclusive data that are of limited clinical benefit. We performed a systematic synopsis of Cochrane reviews published between 2001 and 2015 in the field of pediatric cardiology. Main outcome parameters were the number and percentage of conclusive, partly conclusive, and inconclusive reviews as well as their recommendations and their development over three a priori defined intervals...
February 27, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28254836/optimizing-a-drone-network-to-deliver-automated-external-defibrillators
#2
Justin J Boutilier, Steven C Brooks, Alyf Janmohamed, Adam Byers, Jason E Buick, Cathy Zhan, Angela P Schoellig, Sheldon Cheskes, Laurie J Morrison, Timothy C Y Chan
Background -Public access defibrillation programs can improve survival after out-of-hospital cardiac arrest (OHCA), but automated external defibrillators (AEDs) are rarely available for bystander use at the scene. Drones are an emerging technology that can deliver an AED to the scene of an OHCA for bystander use. We hypothesize that a drone network designed with the aid of a mathematical model combining both optimization and queuing can reduce the time to AED arrival. Methods -We applied our model to 53,702 OHCAs that occurred in the eight regions of the Toronto Regional RescuNET between January 1st 2006 and December 31st 2014...
March 2, 2017: Circulation
https://www.readbyqxmd.com/read/28241135/an-atlas-of-human-long-non-coding-rnas-with-accurate-5-ends
#3
Chung-Chau Hon, Jordan A Ramilowski, Jayson Harshbarger, Nicolas Bertin, Owen J L Rackham, Julian Gough, Elena Denisenko, Sebastian Schmeier, Thomas M Poulsen, Jessica Severin, Marina Lizio, Hideya Kawaji, Takeya Kasukawa, Masayoshi Itoh, A Maxwell Burroughs, Shohei Noma, Sarah Djebali, Tanvir Alam, Yulia A Medvedeva, Alison C Testa, Leonard Lipovich, Chi-Wai Yip, Imad Abugessaisa, Mickaël Mendez, Akira Hasegawa, Dave Tang, Timo Lassmann, Peter Heutink, Magda Babina, Christine A Wells, Soichi Kojima, Yukio Nakamura, Harukazu Suzuki, Carsten O Daub, Michiel J L de Hoon, Erik Arner, Yoshihide Hayashizaki, Piero Carninci, Alistair R R Forrest
Long non-coding RNAs (lncRNAs) are largely heterogeneous and functionally uncharacterized. Here, using FANTOM5 cap analysis of gene expression (CAGE) data, we integrate multiple transcript collections to generate a comprehensive atlas of 27,919 human lncRNA genes with high-confidence 5' ends and expression profiles across 1,829 samples from the major human primary cell types and tissues. Genomic and epigenomic classification of these lncRNAs reveals that most intergenic lncRNAs originate from enhancers rather than from promoters...
March 1, 2017: Nature
https://www.readbyqxmd.com/read/28230125/seven-temperate-terrestrial-planets-around-the-nearby-ultracool-dwarf-star-trappist-1
#4
Michaël Gillon, Amaury H M J Triaud, Brice-Olivier Demory, Emmanuël Jehin, Eric Agol, Katherine M Deck, Susan M Lederer, Julien de Wit, Artem Burdanov, James G Ingalls, Emeline Bolmont, Jeremy Leconte, Sean N Raymond, Franck Selsis, Martin Turbet, Khalid Barkaoui, Adam Burgasser, Matthew R Burleigh, Sean J Carey, Aleksander Chaushev, Chris M Copperwheat, Laetitia Delrez, Catarina S Fernandes, Daniel L Holdsworth, Enrico J Kotze, Valérie Van Grootel, Yaseen Almleaky, Zouhair Benkhaldoun, Pierre Magain, Didier Queloz
One aim of modern astronomy is to detect temperate, Earth-like exoplanets that are well suited for atmospheric characterization. Recently, three Earth-sized planets were detected that transit (that is, pass in front of) a star with a mass just eight per cent that of the Sun, located 12 parsecs away. The transiting configuration of these planets, combined with the Jupiter-like size of their host star-named TRAPPIST-1-makes possible in-depth studies of their atmospheric properties with present-day and future astronomical facilities...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/27939315/a-feathered-dinosaur-tail-with-primitive-plumage-trapped-in-mid-cretaceous-amber
#5
Lida Xing, Ryan C McKellar, Xing Xu, Gang Li, Ming Bai, W Scott Persons, Tetsuto Miyashita, Michael J Benton, Jianping Zhang, Alexander P Wolfe, Qiru Yi, Kuowei Tseng, Hao Ran, Philip J Currie
In the two decades since the discovery of feathered dinosaurs [1-3], the range of plumage known from non-avialan theropods has expanded significantly, confirming several features predicted by developmentally informed models of feather evolution [4-10]. However, three-dimensional feather morphology and evolutionary patterns remain difficult to interpret, due to compression in sedimentary rocks [9, 11]. Recent discoveries in Cretaceous amber from Canada, France, Japan, Lebanon, Myanmar, and the United States [12-18] reveal much finer levels of structural detail, but taxonomic placement is uncertain because plumage is rarely associated with identifiable skeletal material [14]...
December 19, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27973993/-zombie-outbreak-caused-by-the-synthetic-cannabinoid-amb-fubinaca-in-new-york
#6
Axel J Adams, Samuel D Banister, Lisandro Irizarry, Jordan Trecki, Michael Schwartz, Roy Gerona
Background New psychoactive substances constitute a growing and dynamic class of abused drugs in the United States. On July 12, 2016, a synthetic cannabinoid caused mass intoxication of 33 persons in one New York City neighborhood, in an event described in the popular press as a "zombie" outbreak because of the appearance of the intoxicated persons. Methods We obtained and tested serum, whole blood, and urine samples from 8 patients among the 18 who were transported to local hospitals; we also tested a sample of the herbal "incense" product "AK-47 24 Karat Gold," which was implicated in the outbreak...
January 19, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/27934765/zika-virus-produces-noncoding-rnas-using-a-multi-pseudoknot-structure-that-confounds-a-cellular-exonuclease
#7
Benjamin M Akiyama, Hannah M Laurence, Aaron R Massey, David A Costantino, Xuping Xie, Yujiao Yang, Pei-Yong Shi, Jay C Nix, J David Beckham, Jeffrey S Kieft
The outbreak of Zika virus (ZIKV) and associated fetal microcephaly mandates efforts to understand the molecular processes of infection. Related flaviviruses produce noncoding subgenomic flaviviral RNAs (sfRNAs) that are linked to pathogenicity in fetal mice. These viruses make sfRNAs by co-opting a cellular exonuclease via structured RNAs called xrRNAs. We found that ZIKV-infected monkey and human epithelial cells, mouse neurons, and mosquito cells produce sfRNAs. The RNA structure that is responsible for ZIKV sfRNA production forms a complex fold that is likely found in many pathogenic flaviviruses...
December 2, 2016: Science
https://www.readbyqxmd.com/read/27905412/planetary-science-pluto-s-telltale-heart
#8
COMMENT
Amy C Barr
No abstract text is available yet for this article.
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27738015/detection-of-human-adaptation-during-the-past-2000-years
#9
Yair Field, Evan A Boyle, Natalie Telis, Ziyue Gao, Kyle J Gaulton, David Golan, Loic Yengo, Ghislain Rocheleau, Philippe Froguel, Mark I McCarthy, Jonathan K Pritchard
Detection of recent natural selection is a challenging problem in population genetics. Here we introduce the singleton density score (SDS), a method to infer very recent changes in allele frequencies from contemporary genome sequences. Applied to data from the UK10K Project, SDS reflects allele frequency changes in the ancestors of modern Britons during the past ~2000 to 3000 years. We see strong signals of selection at lactase and the major histocompatibility complex, and in favor of blond hair and blue eyes...
November 11, 2016: Science
https://www.readbyqxmd.com/read/27651369/high-g-force-rollercoaster-rides-induce-sinus-tachycardia-but-no-cardiac-arrhythmias-in-healthy-children
#10
Guido E Pieles, Victoria Husk, Teresa Blackwell, Deirdre Wilson, Simon M Collin, Craig A Williams, A Graham Stuart
Theme park operators and medical professionals advise children with heart conditions against using rollercoaster rides, but these recommendations are not evidence-based. The underlying assumption is that the combination of adrenergic stimulation through stress and acceleration might trigger arrhythmias in susceptible individuals. We conducted a cross-sectional observational study to assess heart rate and rhythm in healthy children during commercial rollercoaster rides. Twenty healthy children (9 male) aged 11-15 (mean 13...
January 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/27580034/rapid-emergence-of-life-shown-by-discovery-of-3-700-million-year-old-microbial-structures
#11
Allen P Nutman, Vickie C Bennett, Clark R L Friend, Martin J Van Kranendonk, Allan R Chivas
Biological activity is a major factor in Earth's chemical cycles, including facilitating CO2 sequestration and providing climate feedbacks. Thus a key question in Earth's evolution is when did life arise and impact hydrosphere-atmosphere-lithosphere chemical cycles? Until now, evidence for the oldest life on Earth focused on debated stable isotopic signatures of 3,800-3,700 million year (Myr)-old metamorphosed sedimentary rocks and minerals from the Isua supracrustal belt (ISB), southwest Greenland. Here we report evidence for ancient life from a newly exposed outcrop of 3,700-Myr-old metacarbonate rocks in the ISB that contain 1-4-cm-high stromatolites-macroscopically layered structures produced by microbial communities...
September 22, 2016: Nature
https://www.readbyqxmd.com/read/27462056/watching-television-and-risk-of-mortality-from-pulmonary-embolism-among-japanese-men-and-women-the-jacc-study-japan-collaborative-cohort
#12
Toru Shirakawa, Hiroyasu Iso, Kazumasa Yamagishi, Hiroshi Yatsuya, Naohito Tanabe, Satoyo Ikehara, Shigekazu Ukawa, Akiko Tamakoshi
No abstract text is available yet for this article.
July 26, 2016: Circulation
https://www.readbyqxmd.com/read/27303055/discovery-of-the-interstellar-chiral-molecule-propylene-oxide-ch%C3%A2-chch%C3%A2-o
#13
Brett A McGuire, P Brandon Carroll, Ryan A Loomis, Ian A Finneran, Philip R Jewell, Anthony J Remijan, Geoffrey A Blake
Life on Earth relies on chiral molecules-that is, species not superimposable on their mirror images. This manifests itself in the selection of a single molecular handedness, or homochirality, across the biosphere. We present the astronomical detection of a chiral molecule, propylene oxide (CH3CHCH2O), in absorption toward the Galactic center. Propylene oxide is detected in the gas phase in a cold, extended molecular shell around the embedded, massive protostellar clusters in the Sagittarius B2 star-forming region...
June 17, 2016: Science
https://www.readbyqxmd.com/read/26836220/national-cluster-randomized-trial-of-duty-hour-flexibility-in-surgical-training
#14
RANDOMIZED CONTROLLED TRIAL
Karl Y Bilimoria, Jeanette W Chung, Larry V Hedges, Allison R Dahlke, Remi Love, Mark E Cohen, David B Hoyt, Anthony D Yang, John L Tarpley, John D Mellinger, David M Mahvi, Rachel R Kelz, Clifford Y Ko, David D Odell, Jonah J Stulberg, Frank R Lewis
BACKGROUND: Concerns persist regarding the effect of current surgical resident duty-hour policies on patient outcomes, resident education, and resident well-being. METHODS: We conducted a national, cluster-randomized, pragmatic, noninferiority trial involving 117 general surgery residency programs in the United States (2014-2015 academic year). Programs were randomly assigned to current Accreditation Council for Graduate Medical Education (ACGME) duty-hour policies (standard-policy group) or more flexible policies that waived rules on maximum shift lengths and time off between shifts (flexible-policy group)...
February 25, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27296867/fathers-roles-in-the-care-and-development-of-their-children-the-role-of-pediatricians
#15
Michael Yogman, Craig F Garfield
Fathers' involvement in and influence on the health and development of their children have increased in a myriad of ways in the past 10 years and have been widely studied. The role of pediatricians in working with fathers has correspondingly increased in importance. This report reviews new studies of the epidemiology of father involvement, including nonresidential as well as residential fathers. The effects of father involvement on child outcomes are discussed within each phase of a child's development. Particular emphasis is placed on (1) fathers' involvement across childhood ages and (2) the influence of fathers' physical and mental health on their children...
July 2016: Pediatrics
https://www.readbyqxmd.com/read/27225129/genome-wide-association-study-identifies-74-loci-associated-with-educational-attainment
#16
Aysu Okbay, Jonathan P Beauchamp, Mark Alan Fontana, James J Lee, Tune H Pers, Cornelius A Rietveld, Patrick Turley, Guo-Bo Chen, Valur Emilsson, S Fleur W Meddens, Sven Oskarsson, Joseph K Pickrell, Kevin Thom, Pascal Timshel, Ronald de Vlaming, Abdel Abdellaoui, Tarunveer S Ahluwalia, Jonas Bacelis, Clemens Baumbach, Gyda Bjornsdottir, Johannes H Brandsma, Maria Pina Concas, Jaime Derringer, Nicholas A Furlotte, Tessel E Galesloot, Giorgia Girotto, Richa Gupta, Leanne M Hall, Sarah E Harris, Edith Hofer, Momoko Horikoshi, Jennifer E Huffman, Kadri Kaasik, Ioanna P Kalafati, Robert Karlsson, Augustine Kong, Jari Lahti, Sven J van der Lee, Christiaan deLeeuw, Penelope A Lind, Karl-Oskar Lindgren, Tian Liu, Massimo Mangino, Jonathan Marten, Evelin Mihailov, Michael B Miller, Peter J van der Most, Christopher Oldmeadow, Antony Payton, Natalia Pervjakova, Wouter J Peyrot, Yong Qian, Olli Raitakari, Rico Rueedi, Erika Salvi, Börge Schmidt, Katharina E Schraut, Jianxin Shi, Albert V Smith, Raymond A Poot, Beate St Pourcain, Alexander Teumer, Gudmar Thorleifsson, Niek Verweij, Dragana Vuckovic, Juergen Wellmann, Harm-Jan Westra, Jingyun Yang, Wei Zhao, Zhihong Zhu, Behrooz Z Alizadeh, Najaf Amin, Andrew Bakshi, Sebastian E Baumeister, Ginevra Biino, Klaus Bønnelykke, Patricia A Boyle, Harry Campbell, Francesco P Cappuccio, Gail Davies, Jan-Emmanuel De Neve, Panos Deloukas, Ilja Demuth, Jun Ding, Peter Eibich, Lewin Eisele, Niina Eklund, David M Evans, Jessica D Faul, Mary F Feitosa, Andreas J Forstner, Ilaria Gandin, Bjarni Gunnarsson, Bjarni V Halldórsson, Tamara B Harris, Andrew C Heath, Lynne J Hocking, Elizabeth G Holliday, Georg Homuth, Michael A Horan, Jouke-Jan Hottenga, Philip L de Jager, Peter K Joshi, Astanand Jugessur, Marika A Kaakinen, Mika Kähönen, Stavroula Kanoni, Liisa Keltigangas-Järvinen, Lambertus A L M Kiemeney, Ivana Kolcic, Seppo Koskinen, Aldi T Kraja, Martin Kroh, Zoltan Kutalik, Antti Latvala, Lenore J Launer, Maël P Lebreton, Douglas F Levinson, Paul Lichtenstein, Peter Lichtner, David C M Liewald, Anu Loukola, Pamela A Madden, Reedik Mägi, Tomi Mäki-Opas, Riccardo E Marioni, Pedro Marques-Vidal, Gerardus A Meddens, George McMahon, Christa Meisinger, Thomas Meitinger, Yusplitri Milaneschi, Lili Milani, Grant W Montgomery, Ronny Myhre, Christopher P Nelson, Dale R Nyholt, William E R Ollier, Aarno Palotie, Lavinia Paternoster, Nancy L Pedersen, Katja E Petrovic, David J Porteous, Katri Räikkönen, Susan M Ring, Antonietta Robino, Olga Rostapshova, Igor Rudan, Aldo Rustichini, Veikko Salomaa, Alan R Sanders, Antti-Pekka Sarin, Helena Schmidt, Rodney J Scott, Blair H Smith, Jennifer A Smith, Jan A Staessen, Elisabeth Steinhagen-Thiessen, Konstantin Strauch, Antonio Terracciano, Martin D Tobin, Sheila Ulivi, Simona Vaccargiu, Lydia Quaye, Frank J A van Rooij, Cristina Venturini, Anna A E Vinkhuyzen, Uwe Völker, Henry Völzke, Judith M Vonk, Diego Vozzi, Johannes Waage, Erin B Ware, Gonneke Willemsen, John R Attia, David A Bennett, Klaus Berger, Lars Bertram, Hans Bisgaard, Dorret I Boomsma, Ingrid B Borecki, Ute Bültmann, Christopher F Chabris, Francesco Cucca, Daniele Cusi, Ian J Deary, George V Dedoussis, Cornelia M van Duijn, Johan G Eriksson, Barbara Franke, Lude Franke, Paolo Gasparini, Pablo V Gejman, Christian Gieger, Hans-Jörgen Grabe, Jacob Gratten, Patrick J F Groenen, Vilmundur Gudnason, Pim van der Harst, Caroline Hayward, David A Hinds, Wolfgang Hoffmann, Elina Hyppönen, William G Iacono, Bo Jacobsson, Marjo-Riitta Järvelin, Karl-Heinz Jöckel, Jaakko Kaprio, Sharon L R Kardia, Terho Lehtimäki, Steven F Lehrer, Patrik K E Magnusson, Nicholas G Martin, Matt McGue, Andres Metspalu, Neil Pendleton, Brenda W J H Penninx, Markus Perola, Nicola Pirastu, Mario Pirastu, Ozren Polasek, Danielle Posthuma, Christine Power, Michael A Province, Nilesh J Samani, David Schlessinger, Reinhold Schmidt, Thorkild I A Sørensen, Tim D Spector, Kari Stefansson, Unnur Thorsteinsdottir, A Roy Thurik, Nicholas J Timpson, Henning Tiemeier, Joyce Y Tung, André G Uitterlinden, Veronique Vitart, Peter Vollenweider, David R Weir, James F Wilson, Alan F Wright, Dalton C Conley, Robert F Krueger, George Davey Smith, Albert Hofman, David I Laibson, Sarah E Medland, Michelle N Meyer, Jian Yang, Magnus Johannesson, Peter M Visscher, Tõnu Esko, Philipp D Koellinger, David Cesarini, Daniel J Benjamin
Educational attainment is strongly influenced by social and other environmental factors, but genetic factors are estimated to account for at least 20% of the variation across individuals. Here we report the results of a genome-wide association study (GWAS) for educational attainment that extends our earlier discovery sample of 101,069 individuals to 293,723 individuals, and a replication study in an independent sample of 111,349 individuals from the UK Biobank. We identify 74 genome-wide significant loci associated with the number of years of schooling completed...
May 26, 2016: Nature
https://www.readbyqxmd.com/read/27174967/plant-science-how-the-venus-flytrap-acquired-its-taste-for-meat
#17
Erik Stokstad
No abstract text is available yet for this article.
May 13, 2016: Science
https://www.readbyqxmd.com/read/27151873/nongenetic-functions-of-the-genome
#18
REVIEW
Michael Bustin, Tom Misteli
The primary function of the genome is to store, propagate, and express the genetic information that gives rise to a cell's architectural and functional machinery. However, the genome is also a major structural component of the cell. Besides its genetic roles, the genome affects cellular functions by nongenetic means through its physical and structural properties, particularly by exerting mechanical forces and by serving as a scaffold for binding of cellular components. Major cellular processes affected by nongenetic functions of the genome include establishment of nuclear structure, signal transduction, mechanoresponses, cell migration, and vision in nocturnal animals...
May 6, 2016: Science
https://www.readbyqxmd.com/read/27013737/design-and-synthesis-of-a-minimal-bacterial-genome
#19
Clyde A Hutchison, Ray-Yuan Chuang, Vladimir N Noskov, Nacyra Assad-Garcia, Thomas J Deerinck, Mark H Ellisman, John Gill, Krishna Kannan, Bogumil J Karas, Li Ma, James F Pelletier, Zhi-Qing Qi, R Alexander Richter, Elizabeth A Strychalski, Lijie Sun, Yo Suzuki, Billyana Tsvetanova, Kim S Wise, Hamilton O Smith, John I Glass, Chuck Merryman, Daniel G Gibson, J Craig Venter
We used whole-genome design and complete chemical synthesis to minimize the 1079-kilobase pair synthetic genome of Mycoplasma mycoides JCVI-syn1.0. An initial design, based on collective knowledge of molecular biology combined with limited transposon mutagenesis data, failed to produce a viable cell. Improved transposon mutagenesis methods revealed a class of quasi-essential genes that are needed for robust growth, explaining the failure of our initial design. Three cycles of design, synthesis, and testing, with retention of quasi-essential genes, produced JCVI-syn3...
March 25, 2016: Science
https://www.readbyqxmd.com/read/26953612/polymorphism-identification-and-cardiac-gene-expression-analysis-of-the-calsequestrin-2-gene-in-broiler-chickens-with-sudden-death-syndrome
#20
M Basaki, K Asasi, M R Tabandeh, M Aminlari
Sudden death syndrome (SDS) in broilers is a cardiac disease associated with ventricular tachycardia (VT) and ventricular fibrillation (VF); however, its pathogenesis at the molecular level is not precisely determined. Downregulation and mutations of calsequestrin 2 (CASQ2), a major intracellular Ca(2+) buffer, have been associated with VT and sudden cardiac death (SCD) in humans but in chickens there is no report describing CASQ2 abnormalities in cardiac diseases. In order to better understand the molecular mechanisms predisposing the myocardium to fatal arrhythmia in broilers, the mRNA expression level of chicken CASQ2 gene (chCASQ2) in the left ventricle of dead broilers with SDS was determined and compared to healthy broilers using quantitative real-time PCR (qPCR)...
April 2016: British Poultry Science
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