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https://www.readbyqxmd.com/read/28807812/evaluation-and-clinical-validation-of-two-field-deployable-reverse-transcription-insulated-isothermal-pcr-assays-for-the-detection-of-the-middle-east-respiratory-syndrome-coronavirus
#1
Yun Young Go, Yeon-Sook Kim, Shinhye Cheon, Sangwoo Nam, Keun Bon Ku, Meehyein Kim, Nam Hyuk Cho, Hyun Park, Pei-Yu Alison Lee, Yu-Chun Lin, Yun-Long Tsai, Hwa-Tang Thomas Wang, Udeni B R Balasuriya
Middle East respiratory syndrome (MERS) is an emerging zoonotic viral respiratory disease that was first identified in Saudi Arabia in 2012. In 2015, the largest MERS outbreak outside of the Middle East region occurred in the Republic of Korea. The rapid nosocomial transmission of MERS-coronavirus (MERS-CoV) in Korean healthcare settings highlighted the importance and urgent need for a rapid and reliable on-site diagnostic assay to implement effective control and preventive measures. Here, we describe the evaluation and validation of two newly developed reverse transcription-insulated isothermal PCR (RT-iiPCR) methods targeting the ORF1a and upE genes of MERS-CoV...
August 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28801913/design-of-synthetic-promoters-for-gene-circuits-in-mammalian-cells
#2
Pratik Saxena, Daniel Bojar, Martin Fussenegger
Synthetic biology, the synthesis of engineering and biology, has rapidly matured and has dramatically increased the complexity of artificial gene circuits in recent years. The deployment of intricate synthetic gene circuits in mammalian cells requires the establishment of very precise and orthogonal control of transgene expression. In this chapter, we describe methods of modulating the expression of transgenes at the transcriptional level. Using cAMP-response element-binding protein (CREB)-dependent promoters as examples, a tool for the precise tuning of gene expression by using different core promoters and by varying the binding affinity of transcription factor operator sites is described...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28801106/comparison-of-caged-and-native-blue-mussels-mytilus-edulis-spp-for-environmental-monitoring-of-pah-pcb-and-trace-metals
#3
Merete Schøyen, Ian J Allan, Anders Ruus, Jarle Håvardstun, Dag Ø Hjermann, Jonny Beyer
Contaminant bioaccumulation was studied in blue mussels (Mytilus edulis spp.) using the harbor waters of Kristiansand (Norway) as a case study. A suite of chemical contaminants (trace metals, PAHs and PCBs) was analyzed in caged and native mussels as well as in passive samplers (Diffusive Gradients in Thin films (DGT)-devices and silicone rubbers) placed alongside the mussels for estimation of contaminant concentrations in water and uptake rates and bioaccumulation factors (BAFs) in mussels during a six-months deployment period...
August 2, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28792543/oyster-toadfish-opsanus-tau-boatwhistle-call-detection-and-patterns-within-a-large-scale-oyster-restoration-site
#4
Shannon W Ricci, DelWayne R Bohnenstiehl, David B Eggleston, M Lisa Kellogg, R Patrick Lyon
During May 2015, passive acoustic recorders were deployed at eight subtidal oyster reefs within Harris Creek Oyster Sanctuary in Chesapeake Bay, Maryland USA. These sites were selected to represent both restored and unrestored habitats having a range of oyster densities. Throughout the survey, the soundscape within Harris Creek was dominated by the boatwhistle calls of the oyster toadfish, Opsanus tau. A novel, multi-kernel spectral correlation approach was developed to automatically detect these boatwhistle calls using their two lowest harmonic bands...
2017: PloS One
https://www.readbyqxmd.com/read/28783915/comparison-of-pocis-passive-samplers-vs-composite-water-sampling-a-case-study
#5
Justine Criquet, David Dumoulin, Michael Howsam, Leslie Mondamert, Jean-François Goossens, Jean Prygiel, Gabriel Billon
The relevance of Polar Organic Chemical Integrative Samplers (POCIS) was evaluated for the assessment of concentrations of 46 pesticides and 19 pharmaceuticals in a small, peri-urban river with multi-origin inputs. Throughout the period of POCIS deployment, 24h-average water samples were collected automatically, and showed the rapid temporal evolution of concentrations of several micropollutants, as well as permitting the calculation of average concentrations in the water phase for comparison with those estimated from POCIS passive samplers...
August 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28782729/glacial-seismology
#6
Richard Aster, Paul Winberry
Seismic source and wave propagation studies contribute to understanding structure, transport, fracture mechanics, mass balance, and other processes within glaciers and their surrounding environments. Glaciogenic seismic waves readily couple with the bulk Earth, and can be recorded by seismographs deployed at local to global ranges. Although the fracturing, ablating, melting, and/or highly irregular environment of active glaciers can be highly unstable and hazardous, informative seismic measurements can commonly be made at stable proximal ice or rock sites...
August 7, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28782007/a-modular-yeast-biosensor-for-low-cost-point-of-care-pathogen-detection
#7
Nili Ostrov, Miguel Jimenez, Sonja Billerbeck, James Brisbois, Joseph Matragrano, Alastair Ager, Virginia W Cornish
The availability of simple, specific, and inexpensive on-site detection methods is of key importance for deployment of pathogen surveillance networks. We developed a nontechnical and highly specific colorimetric assay for detection of pathogen-derived peptides based on Saccharomyces cerevisiae-a genetically tractable model organism and household product. Integrating G protein-coupled receptors with a visible, reagent-free lycopene readout, we demonstrate differential detection of major human, plant, and food fungal pathogens with nanomolar sensitivity...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28780120/vaccines-against-ebola-virus
#8
Navin Venkatraman, Daniel Silman, Pedro M Folegatti, Adrian V S Hill
We have just witnessed the largest and most devastating outbreak of Ebola virus disease, which highlighted the urgent need for development of an efficacious vaccine that could be used to curtail future outbreaks. Prior to 2014, there had been limited impetus worldwide to develop a vaccine since the virus was first discovered in 1976. Though too many lives were lost during this outbreak, it resulted in the significantly accelerated clinical development of a number of candidate vaccines through an extraordinary collaborative global effort coordinated by the World Health Organisation (WHO) and involving a number of companies, trial centres, funders, global stakeholders and agencies...
August 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28779888/in-situ-elemental-characterisation-of-marine-microplastics-by-portable-xrf
#9
Andrew Turner
The performance of a portable x-ray fluorescence spectrometer configured in a test stand and coupled to a laptop has been evaluated for the determination of various elements (including Br, Cd, Cl, Cr, Cu, Fe, Pb and Zn) in beached microplastics. Under laboratory conditions, analysis of samples that covered the 3-mm x-ray beam returned concentrations that, on average, were within 20% of concentrations determined by ICP following acid digestion. Analysis of progressively smaller offcuts (to <1mm) resulted in corresponding concentrations that were comparable to those determined in original samples but errors and detection limits that progressively increased...
August 2, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28776028/along-trench-variation-in-seafloor-displacements-after-the-2011-tohoku-earthquake
#10
Fumiaki Tomita, Motoyuki Kido, Yusaku Ohta, Takeshi Iinuma, Ryota Hino
The 2011 Tohoku-oki earthquake was the largest earthquake ever observed with seafloor geodetic techniques in and around its source region. Large crustal deformation associated with both the coseismic rupture and the rapid postseismic deformation has been reported. However, these observations are insufficient to describe the postseismic deformation processes occurring around the broad rupture area. We report the first results of seafloor Global Positioning System and acoustic ranging (GPS-A) observations based on repeated campaign surveys conducted over nearly 4 years using the extended GPS-A network deployed along the Japan Trench in September 2012...
July 2017: Science Advances
https://www.readbyqxmd.com/read/28774650/rapid-anatomical-brain-imaging-using-spiral-acquisition-and-an-expanded-signal-model
#11
Lars Kasper, Maria Engel, Christoph Barmet, Maximilian Haeberlin, Bertram J Wilm, Benjamin E Dietrich, Thomas Schmid, Simon Gross, David O Brunner, Klaas E Stephan, Klaas P Pruessmann
We report the deployment of spiral acquisition for high-resolution structural imaging at 7T. Long spiral readouts are rendered manageable by an expanded signal model including static off-resonance and B0 dynamics along with k-space trajectories and coil sensitivity maps. Image reconstruction is accomplished by inversion of the signal model using an extension of the iterative non-Cartesian SENSE algorithm. Spiral readouts up to 25 ms are shown to permit whole-brain 2D imaging at 0.5 mm in-plane resolution in less than a minute...
July 31, 2017: NeuroImage
https://www.readbyqxmd.com/read/28767719/task-shifting-impact-of-introducing-a-pilot-community-health-worker-cadre-into-zambia-s-public-sector-health-workforce
#12
Brett Keller, Elizabeth McCarthy, Kathryn Bradford Vosburg, Mutinta Musonda, Jere Mwila, Jan Willem van den Broek, Fiona J Walsh
BACKGROUND: The Zambia Ministry of Health (MOH) recruited and trained a new cadre of Community Health Assistants (CHAs) as part of its National Community Health Strategy. The inaugural class of 307 CHAs completed one year of training in July 2012 and deployed to their communities. METHODS: The impact of the CHA program on the volume and type of health services provided at health posts and their respective referral health centers was measured with a non-randomized difference-in-differences design...
2017: PloS One
https://www.readbyqxmd.com/read/28767309/best-practices-for-healthcare-facility-and-regional-stockpile-maintenance-and-sustainment-a-literature-review
#13
Terri Rebmann, Kyle McPhee, Leslie Osborne, Daniel P Gillen, Gabriel A Haas
Preparing for mass casualty incidents is essential to maximizing community resilience. Many US-based organizations and regions have developed stockpiles of medications, supplies, and equipment for mass casualty incident preparedness. The Centers for Disease Control and Prevention (CDC) assess and manage federally stockpiled materials, but hospitals, healthcare systems, and regional organizations are responsible for maintaining locally owned caches. The CDC has protocols for assessing and managing the Strategic National Stockpile, but no such guidance exists for local or geographical/regional stockpiles...
August 2, 2017: Health Security
https://www.readbyqxmd.com/read/28765839/recent-developments-in-sensing-methods-for-eutrophying-nutrients-with-a-focus-on-automation-for-environmental-applications
#14
REVIEW
G Duffy, F Regan
The demand for autonomous sensors for unattended, continuous nutrient monitoring in water is rapidly growing with the increasing need for more frequent and widespread environmental pollution monitoring. Legislative bodies, local authorities and industries all require frequent water quality monitoring, however, this is time and labour intensive, and an expensive undertaking. Autonomous sensors allow for frequent, unattended data collection. While this solves the time and labour intensive aspects of water monitoring, sensors can be very expensive...
August 2, 2017: Analyst
https://www.readbyqxmd.com/read/28764792/deployment-and-use-of-mobile-phone-technology-for-real-time-reporting-of-fever-cases-and-malaria-treatment-failure-in-areas-of-declining-malaria-transmission-in-muheza-district-north-eastern-tanzania
#15
Filbert Francis, Deus S Ishengoma, Bruno P Mmbando, Acleus S M Rutta, Mwelecele N Malecela, Benjamin Mayala, Martha M Lemnge, Edwin Michael
BACKGROUND: Early detection of febrile illnesses at community level is essential for improved malaria case management and control. Currently, mobile phone-based technology has been commonly used to collect and transfer health information and services in different settings. This study assessed the applicability of mobile phone-based technology in real-time reporting of fever cases and management of malaria by village health workers (VHWs) in north-eastern Tanzania. METHODS: The community mobile phone-based disease surveillance and treatment for malaria (ComDSTM) platform, combined with mobile phones and web applications, was developed and implemented in three villages and one dispensary in Muheza district from November 2013 to October 2014...
August 1, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28760729/using-digital-technologies-in-clinical-hiv-research-real-world-applications-and-considerations-for-future-work
#16
Jessica Andriesen, Sheana Bull, Janan Dietrich, Jessica E Haberer, Barbara Van Der Pol, Yegor Voronin, Kristin M Wall, Christopher Whalen, Frances Priddy
BACKGROUND: Digital technologies, especially if used in novel ways, provide a number of potential advantages to clinical research in trials related to human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) and may greatly facilitate operations as well as data collection and analysis. These technologies may even allow answering questions that are not answerable with older technologies. However, they come with a variety of potential concerns for both the participants and the trial sponsors...
July 31, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28758346/direct-detection-and-characterization-of-foot-and-mouth-disease-virus-in-east-africa-using-a-field-ready-real-time-pcr-platform
#17
E L A Howson, B Armson, N A Lyons, E Chepkwony, C J Kasanga, S Kandusi, N Ndusilo, W Yamazaki, D Gizaw, S Cleaveland, T Lembo, R Rauh, W M Nelson, B A Wood, V Mioulet, D P King, V L Fowler
Effective control and monitoring of foot-and-mouth disease (FMD) relies upon rapid and accurate disease confirmation. Currently, clinical samples are usually tested in reference laboratories using standardized assays recommended by The World Organisation for Animal Health (OIE). However, the requirements for prompt and serotype-specific diagnosis during FMD outbreaks, and the need to establish robust laboratory testing capacity in FMD-endemic countries have motivated the development of simple diagnostic platforms to support local decision-making...
July 30, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28755290/barriers-to-systemic-application-of-virus-based-vectors-in-gene-therapy-lessons-from-adenovirus-type-5
#18
REVIEW
Franziska Jönsson, Florian Kreppel
Currently, virus-based vectors, namely derivatives of the adenovirus, are frequently used in a wide variety of ex vivo or local gene therapeutic applications. However, the efficacy of virus-based vectors in systemic applications is presently still extremely limited. Complex interactions of the various vector types with the patient's organism hinder successful vector deployment. Exemplary, here we summarize barriers to systemic application of Adenovirus-based vectors leading either to acute toxic effects or rapid vector neutralization and discuss strategies to overcome these barriers aiming to develop more efficient vector types...
July 28, 2017: Virus Genes
https://www.readbyqxmd.com/read/28754807/balloon-assisted-coil-embolization-and-large-stent-delivery-for-cerebral-aneurysms-with-a-new-generation-of-dual-lumen-balloons-copernic-2l
#19
Adrien Guenego, Jean-Baptiste Zerlauth, Francesco Puccinelli, Steven Hajdu, David C Rotzinger, Felix Zibold, Eike I Piechowiak, Pasquale Mordasini, Jan Gralla, Tomas Dobrocky, Roy T Daniel, René Chapot, Pascal J Mosimann
INTRODUCTION: Dual coaxial lumen balloon microcatheters through which small stents can be delivered have recently been described. We report a series of a new type of dual lumen balloon catheter with a parallel lumen design enabling enhanced inflation and deflation properties through which larger stents may be deployed, including flow diverters (FD). METHODS: All aneurysms that were treated with a Copernic 2L (COP2L) dual lumen balloon catheter at our institution between February 2014 and December 2016 were assessed...
July 28, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28753109/anticipation-and-response-pandemic-influenza-in-malawi-2009
#20
Evanson Z Sambala, Lenore Manderson
BACKGROUND: In 2006, Malawi developed a national influenza plan to mitigate, prevent and manage the burden of infection should an outbreak occur. In 2009, it translated its contingency plan to respond to the unfolding influenza pandemic. However, little is known of how Malawi translated its national influenza plan into response actions, or the success of these responses. OBJECTIVE: To investigate how Malawi translated its preparedness plan and so broaden our understanding of the outcomes of the responses...
2017: Global Health Action
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