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https://www.readbyqxmd.com/read/29783145/electrochemical-biosensor-system-using-a-cmos-microelectrode-array-provides-high-spatially-and-temporally-resolved-images
#1
William Tedjo, Jasmine E Nejad, Rachel Feeny, Lang Yang, Charles S Henry, Stuart Tobet, Tom Chen
The ability to view biological events in real time has contributed significantly to research in the life sciences. While video capture of real time changes in anatomical relationships is important, it is equally important to visualize real time changes in the chemical communications that drive cell behaviors. This paper describes an electrochemical imaging system capable of capturing changes in chemical gradients in live tissue slices. The system consists of a CMOS microchip with 8192 configurable Pt surface electrodes, on-chip potentiostat, on-chip control logic, and a microfluidic device designed to interface with the CMOS chip to support ex vivo tissue experimentation...
April 10, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29783038/assessing-data-quality-and-the-variability-of-source-data-verification-auditing-methods-in-clinical-research-settings
#2
Lauren Houston, Yasmine Probst, Allison Martin
INTRODUCTION: Data audits within clinical settings are extensively used as a major strategy to identify errors, monitor study operations and ensure high-quality data. However, clinical trial guidelines are non-specific in regards to recommended frequency, timing and nature of data audits. The absence of a well-defined data quality definition and method to measure error undermines the reliability of data quality assessment. This review aimed to assess the variability of source data verification (SDV) auditing methods to monitor data quality in a clinical research setting...
May 18, 2018: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/29782994/structural-covariance-of-brain-region-volumes-is-associated-with-both-structural-connectivity-and-transcriptomic-similarity
#3
Yohan Yee, Darren J Fernandes, Leon French, Jacob Ellegood, Lindsay S Cahill, Dulcie A Vousden, Leigh Spencer Noakes, Jan Scholz, Matthijs C van Eede, Brian J Nieman, John G Sled, Jason P Lerch
An organizational pattern seen in the brain, termed structural covariance, is the statistical association of pairs of brain regions in their anatomical properties. These associations, measured across a population as covariances or correlations usually in cortical thickness or volume, are thought to reflect genetic and environmental underpinnings. Here, we examine the biological basis of structural volume covariance in the mouse brain. We first examined large scale associations between brain region volumes using an atlas-based approach that parcellated the entire mouse brain into 318 regions over which correlations in volume were assessed, for volumes obtained from 153 mouse brain images via high-resolution MRI...
May 18, 2018: NeuroImage
https://www.readbyqxmd.com/read/29782942/effects-of-light-and-dark-phase-testing-on-the-investigation-of-behavioural-paradigms-in-mice-relevance-for-behavioural-neuroscience
#4
Juliet Richetto, Marcello Polesel, Ulrike Weber-Stadlbauer
Different timing and light phases are critical factors in behavioural neuroscience, which can greatly affect the experimental outcomes of the performed tests. Despite the fact that time of testing is one of the most common factors that varies across behavioural laboratories, knowledge about the consequences of testing time on behavioural readouts is limited. Thus, in this study we systematically assessed the effect of this factor on the readout of a variety of elementary and recurrent behavioural paradigms in C57Bl/6 mice...
May 18, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29782636/a-boxplot-for-circular-data
#5
Davide Buttarazzi, Giuseppe Pandolfo, Giovanni C Porzio
The box-and-whiskers plot is an extraordinary graphical tool that provides a quick visual summary of an observed distribution. In spite of its many extensions, a really suitable boxplot to display circular data is not yet available. Thanks to its simplicity and strong visual impact, such a tool would be especially useful in all fields where circular measures arise: biometrics, astronomy, environmetrics, Earth sciences, to cite just a few. For this reason, in line with Tukey's original idea, a Tukey-like circular boxplot is introduced...
May 21, 2018: Biometrics
https://www.readbyqxmd.com/read/29782635/effect-of-home-based-rehabilitation-for-hip-fracture-a-meta-analysis-of-randomized-controlled-trials
#6
Desheng Wu, Xiulan Zhu, Shaowei Zhang
BACKGROUND: Home-based rehabilitation following hip fracture may be beneficial; however, the evidence is controversial. The aim of this systematic review and meta-analysis was to evaluate the effectiveness of home-based rehabilitation in patients with hip fracture. METHODS: PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched systematically. Randomized controlled trials (RCTs) assessing the effect of home-based rehabilitation for patients with hip fracture were included...
May 21, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29782001/a-simple-and-reproducible-method-to-prepare-membrane-samples-from-freshly-isolated-rat-brain-microvessels
#7
Hrvoje Brzica, Wazir Abdullahi, Bianca G Reilly, Patrick T Ronaldson
The blood-brain barrier (BBB) is a dynamic barrier tissue that responds to various pathophysiological and pharmacological stimuli. Such changes resulting from these stimuli can greatly modulate drug delivery to the brain and, by extension, cause considerable challenges in the treatment of central nervous system (CNS) diseases. Many BBB changes that affect pharmacotherapy, involve proteins that are localized and expressed at the level of endothelial cells. Indeed, such knowledge on BBB physiology in health and disease has sparked considerable interest in the study of these membrane proteins...
May 7, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781706/launch-of-an-infrastructure-for-health-research-bbmri-eric
#8
Jan-Eric Litton
Biobanking and BioMolecular resources Research Infrastructure (BBMRI)- European Research Infrastructure Consortium (ERIC) is the largest infrastructure launched in Europe in health research. By nature it is a distributed infrastructure, in which biological samples and data are hosted by the European Member States biobanks. As of today, BBMRI-ERIC consists of 19 European Member States and 1 international organization, the International Agency for Research on Cancer. This means that BBMRI-ERIC has a population of >500 million individuals in Europe...
May 21, 2018: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/29781142/anger-in-the-context-of-postnatal-depression-an-integrative-review
#9
Christine H Ou, Wendy A Hall
BACKGROUND: Contrary to social constructions of new motherhood as a joyous time, mothers may experience postnatal depression and anger. Although postnatal depression has been thoroughly studied, the expression of maternal anger in the context of postnatal depression is conceptually unclear. This integrative review investigated the framing of anger in the context of postnatal depression. METHODS: After undertaking a search of CINAHL, Ovid-Medline, PsycInfo, and Web of Science, we identified qualitative (n = 7) and quantitative (n = 17) papers that addressed maternal anger and postnatal depression...
May 20, 2018: Birth
https://www.readbyqxmd.com/read/29781091/fetal-assessment-in-buprenorphine-maintained-women-using-fetal-magnetoencephalography-a-pilot-study
#10
Diana Escalona-Vargas, Jessica L Coker, Shona Ray-Griffith, Eric R Siegel, Curtis L Lowery, Zachary N Stowe, Hari Eswaran
BACKGROUND AND AIMS: In-utero exposure to opioids including buprenorphine (BUP) has been shown to affect fetal activity, specifically heart-rate variability (FHRV) and fetal movement (FM). Our objective was to extract simultaneous recordings of fetal cardiac, and brain-related activity in BUP-maintained and non-opioid exposed pregnant women using a novel non-invasive biomagnetic technique. DESIGN: A pilot study was conducted, recording and analyzing biomagnetic data from fetuses of BUP-maintained and non-opioid exposed pregnant women...
May 20, 2018: Addiction
https://www.readbyqxmd.com/read/29781077/demographic-factors-determining-folic-acid-supplementation-in-pregnant-and-childbearing-age-women
#11
Grażyna Kurzawińska, Justyna Magiełda, Anna Romała, Joanna Bartkowiak-Wieczorek, Magdalena Barlik, Krzysztof Drews, Marcin Ożarowski, Agnieszka Seremak-Mrozikiewicz
OBJECTIVES: Adequate folate intake constitutes a significant problem in the periconceptional period and early pregnancy but can be achieved by folic acid (FA) supplementation. Low intake of folate may cause numerous negative effects on the pregnancy outcome, including recurrent miscarriage, preeclampsia, fetal hypotrophy, premature delivery, premature placental abruption, and intrauterine fetal death. The aim of the study was to evaluate factors determining FA supplementation in the population of Polish women before and during pregnancy...
2018: Ginekologia Polska
https://www.readbyqxmd.com/read/29780744/employing-dimensional-disparity-of-teeth-to-establish-the-gender-in-odisha-population-a-dimorphic-study
#12
Kailash Chandra Dash, Abikshyeet Panda, Shyam Sundar Behura, Sujatha Ramachandra, Lipsa Bhuyan, Alokenath Bandopadhyay
Aims and Objectives: Determination of sex is one of the most important and crucial steps in forensic science. Sexual dimorphism using odontometric analysis is found to vary in different populations making it necessary to attain values of a specific population which helps the identification possible. This present study attempts to establish sexual dimorphism using odontometric analysis in Odisha population. Materials and Methods: A total of 200 subjects (100 male and 100 female) between ages 18 and 25 years were included in the study...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780743/detection-of-ostecalcin-in-gingival-crevicular-fluid-in-a-group-of-orthodontic-patients
#13
Najwa Adeeb Nassrawin
Aim: To detect osteocalcin (OC) in gingival crevicular fluid (GCF) and to monitor the concentration of OC at what stage inflammation and bone resorption reaches their maximum following orthodontic activation. Materials and Methods: GCF samples were collected from six adult orthodontic patients (mean age = 22.3, range 20-24 years) on 3, 7, 10, 14, 21, 28, and 35 days after activation of orthodontic appliance, from the tooth surface where bone resorption was expected to occur...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780432/-in-silico-toxicology-comprehensive-benchmarking-of-multi-label-classification-methods-applied-to-chemical-toxicity-data
#14
REVIEW
Arwa B Raies, Vladimir B Bajic
One goal of toxicity testing, among others, is identifying harmful effects of chemicals. Given the high demand for toxicity tests, it is necessary to conduct these tests for multiple toxicity endpoints for the same compound. Current computational toxicology methods aim at developing models mainly to predict a single toxicity endpoint. When chemicals cause several toxicity effects, one model is generated to predict toxicity for each endpoint, which can be labor and computationally intensive when the number of toxicity endpoints is large...
May 2018: Wiley Interdisciplinary Reviews. Computational Molecular Science
https://www.readbyqxmd.com/read/29780188/science-map-metaphors-a-comparison-of-network-versus-hexmap-based-visualizations
#15
Katy Börner, Adam H Simpson, Andreas Bueckle, Robert L Goldstone
Most maps of science use a network layout; few use a landscape metaphor. Human users are trained in reading geospatial maps, yet most have a hard time reading even simple networks. Prior work using general networks has shown that map-based visualizations increase recall accuracy of data. This paper reports the result of a comparison of two comparable renderings of the UCSD map of science that are: the original network layout and a novel hexmap that uses a landscape metaphor to layout the 554 subdisciplines grouped into 13 color-coded disciplines of science...
February 2018: Scientometrics
https://www.readbyqxmd.com/read/29780172/a-spatially-integrated-framework-for-assessing-socioecological-drivers-of-carnivore-decline
#16
Nicolás Gálvez, Gurutzeta Guillera-Arroita, Freya A V St John, Elke Schüttler, David W Macdonald, Zoe G Davies
Habitat loss, fragmentation and degradation are key threats to the long-term persistence of carnivores, which are also susceptible to direct persecution by people. Integrating natural and social science methods to examine how habitat configuration/quality and human-predator relations may interact in space and time to effect carnivore populations within human-dominated landscapes will help prioritise conservation investment and action effectively.We propose a socioecological modelling framework to evaluate drivers of carnivore decline in landscapes where predators and people coexist...
May 2018: Journal of Applied Ecology
https://www.readbyqxmd.com/read/29780170/model-selection-theory-the-need-for-a-more-nuanced-picture-of-use-novelty-and-double-counting
#17
Katie Steele, Charlotte Werndl
This article argues that common intuitions regarding (a) the specialness of 'use-novel' data for confirmation and (b) that this specialness implies the 'no-double-counting rule', which says that data used in 'constructing' (calibrating) a model cannot also play a role in confirming the model's predictions, are too crude. The intuitions in question are pertinent in all the sciences, but we appeal to a climate science case study to illustrate what is at stake. Our strategy is to analyse the intuitive claims in light of prominent accounts of confirmation of model predictions...
June 2018: British Journal for the Philosophy of Science
https://www.readbyqxmd.com/read/29780026/teaching-the-relationship-between-health-and-climate-change-a-systematic-scoping-review-protocol
#18
Tasnime Osama, David Brindley, Azeem Majeed, Kris A Murray, Hiral Shah, Mel Toumazos, Michelle Van Velthoven, Josip Car, Glenn Wells, Edward Meinert
INTRODUCTION: The observed and projected impacts of climate change on human health are significant. While climate change has gathered global momentum and is taught frequently, the extent to which the relationships between climate change and health are taught remains uncertain. Education provides an opportunity to create public engagement on these issues, but the extent to which historical implementation of climate health education could be leveraged is not well understood. To address this gap, we propose to conduct a scoping review of all forms of teaching that have been used to illustrate the health effects of climate change between 2005 and 2017, coinciding with a turning point in the public health and climate change agendas following the 2005 Group of 7/8 (G7/8) Summit...
May 20, 2018: BMJ Open
https://www.readbyqxmd.com/read/29779919/radiation-dose-constraints-for-organs-at-risk-in-neuro-oncology-the-european-particle-therapy-network-consensus
#19
REVIEW
Maarten Lambrecht, Daniëlle B P Eekers, Claire Alapetite, Neil G Burnet, Valentin Calugaru, Ida E M Coremans, Piero Fossati, Morten Høyer, Johannes A Langendijk, Alejandra Méndez Romero, Frank Paulsen, Ana Perpar, Laurette Renard, Dirk de Ruysscher, Beate Timmermann, Pavel Vitek, Damien C Weber, Hiske L van der Weide, Gillian A Whitfield, Ruud Wiggenraad, Erik Roelofs, Petra Witt Nyström, Esther G C Troost
PURPOSE: For unbiased comparison of different radiation modalities and techniques, consensus on delineation of radiation sensitive organs at risk (OARs) and on their dose constraints is warranted. Following the publication of a digital, online atlas for OAR delineation in neuro-oncology by the same group, we assessed the brain OAR-dose constraints in a follow-up study. METHODS: We performed a comprehensive search to identify the current papers on OAR dose constraints for normofractionated photon and particle therapy in PubMed, Ovid Medline, Cochrane Library, Embase and Web of Science...
May 17, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29779780/on-sunspots-click-science-and-molecular-iconography
#20
Igor Mokrousov
CRISPR-spoligotyping and MIRU-VNTR typing, SITVIT_WEB and MIRU-VNTRplus are the methods and online resources most widely used for Mycobacterium tuberculosis genotype family assignment and clustering analysis. They have been proven invaluable for molecular epidemiological studies of this important human pathogen in setting up the terminology and classification framework. However, they are inherently limited by insufficient knowledge of evolution of the targeted genome loci (especially, CRISPR). The situation is aggravated by the dogmatic, iconographic perception of these increasingly user-friendly online tools...
May 2018: Tuberculosis
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