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https://www.readbyqxmd.com/read/28646754/free-energy-analysis-of-cell-spreading
#1
Eóin McEvoy, Vikram S Deshpande, Patrick McGarry
In this study we present a steady-state adaptation of the thermodynamically motivated stress fiber (SF) model of Vigliotti et al. (2015). We implement this steady-state formulation in a non-local finite element setting where we also consider global conservation of the total number of cytoskeletal proteins within the cell, global conservation of the number of binding integrins on the cell membrane, and adhesion limiting ligand density on the substrate surface. We present a number of simulations of cell spreading in which we consider a limited subset of the possible deformed spread-states assumed by the cell in order to examine the hypothesis that free energy minimization drives the process of cell spreading...
June 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28646674/a-multimodal-spatiotemporal-cardiac-motion-atlas-from-mr-and-ultrasound-data
#2
Esther Puyol-Antón, Matthew Sinclair, Bernhard Gerber, Mihaela Silvia Amzulescu, Hélène Langet, Mathieu De Craene, Paul Aljabar, Paolo Piro, Andrew P King
Cardiac motion atlases provide a space of reference in which the motions of a cohort of subjects can be directly compared. Motion atlases can be used to learn descriptors that are linked to different pathologies and which can subsequently be used for diagnosis. To date, all such atlases have been formed and applied using data from the same modality. In this work we propose a framework to build a multimodal cardiac motion atlas from 3D magnetic resonance (MR) and 3D ultrasound (US) data. Such an atlas will benefit from the complementary motion features derived from the two modalities, and furthermore, it could be applied in clinics to detect cardiovascular disease using US data alone...
June 13, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28646400/a-brief-assessment-tool-for-investigating-facets-of-moral-judgment-from-realistic-vignettes
#3
Michael Kruepke, Erin K Molloy, Konrad Bresin, Aron K Barbey, Edelyn Verona
Humans make moral judgments every day, and research demonstrates that these evaluations are based on a host of related event features (e.g., harm, legality). In order to acquire systematic data on how moral judgments are made, our assessments need to be expanded to include real-life, ecologically valid stimuli that take into account the numerous event features that are known to influence moral judgment. To facilitate this, Knutson et al. (in Social Cognitive and Affective Neuroscience, 5(4), 378-384, 2010) developed vignettes based on real-life episodic memories rated concurrently on key moral features; however, the method is time intensive (~1...
June 23, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28645853/anterior-pallidal-deep-brain-stimulation-for-tourette-s-syndrome-a-randomised-double-blind-controlled-trial
#4
Marie-Laure Welter, Jean-Luc Houeto, Stéphane Thobois, Benoit Bataille, Marc Guenot, Yulia Worbe, Andreas Hartmann, Virginie Czernecki, Eric Bardinet, Jerome Yelnik, Sophie Tezenas du Montcel, Yves Agid, Marie Vidailhet, Philippe Cornu, Audrey Tanguy, Solène Ansquer, Nematollah Jaafari, Emmanuel Poulet, Giulia Serra, Pierre Burbaud, Emmanuel Cuny, Bruno Aouizerate, Pierre Pollak, Stephan Chabardes, Mircea Polosan, Michel Borg, Denys Fontaine, Bruno Giordana, Sylvie Raoul, Tiphaine Rouaud, Anne Sauvaget, Isabelle Jalenques, Carine Karachi, Luc Mallet
BACKGROUND: Deep brain stimulation (DBS) has been proposed to treat patients with severe Tourette's syndrome, and open-label trials and two small double-blind trials have tested DBS of the posterior and the anterior internal globus pallidus (aGPi). We aimed to specifically assess the efficacy of aGPi DBS for severe Tourette's syndrome. METHODS: In this randomised, double-blind, controlled trial, we recruited patients aged 18-60 years with severe and medically refractory Tourette's syndrome from eight hospitals specialised in movement disorders in France...
June 20, 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28645718/optimizing-adjuvants-for-intradermal-delivery-of-menc-glycoconjugate-vaccine
#5
Agnese Donadei, Cristiana Balocchi, Maria R Romano, Luigi Panza, Roberto Adamo, Francesco Berti, Derek T O'Hagan, Simona Gallorini, Barbara C Baudner
Intradermal vaccine delivery is a promising alternative to the conventional intramuscular route. The skin layer is immunologically supported by a densely network of antigen presenting cells, while the skeletal muscle is loaded with a relatively sparse population of APCs. Nevertheless, the vaccine to be suitable for intradermal delivery needs a new formulation to facilitate either smaller injection volumes or the introduction into new delivery devises as micro-needles. This study presents a proof of concept for intradermal delivery of the MenC-CRM197 glycoconjugate vaccine using a mouse model...
June 20, 2017: Vaccine
https://www.readbyqxmd.com/read/28645717/surveillance-of-pneumococcal-colonization-and-invasive-pneumococcal-disease-reveals-shift-in-prevalent-carriage-serotypes-in-massachusetts-children-to-relatively-low-invasiveness
#6
I Yildirim, B A Little, J Finkelstein, G Lee, W P Hanage, K Shea, S I Pelton
BACKGROUND: Following the introduction of pneumococcal conjugate vaccines (PCV), overall nasopharyngeal colonization rates have not changed significantly, however a dramatic and sustained decline in invasive pneumococcal disease (IPD) in children was observed in every setting where the PCVs were implemented. We aimed to describe the differences in invasive disease potential of serotypes that are common colonizers in pre- and post-vaccine eras in order to provide further insight in our understanding of dynamic epidemiology of pneumococcal diseases...
June 20, 2017: Vaccine
https://www.readbyqxmd.com/read/28645685/concordance-between-brain-18-f-fdg-pet-and-cerebrospinal-fluid-biomarkers-in-diagnosing-alzheimer-s-disease
#7
S Rubí, A Noguera, S Tarongí, M Oporto, A García, H Vico, A Espino, M J Picado, A Mas, C Peña, G Amer
OBJECTIVES: Cortical posterior hypometabolism on PET imaging with (18)F-FDG (FDG-PET), and altered levels of Aß1-42 peptide, total Tau (tTau) and phosphorylated Tau (pTau) proteins in cerebrospinal fluid (CSF) are established diagnostic biomarkers in Alzheimer's disease (AD). An evaluation has been made of the concordance and relationship between the results of FDG-PET and CSF biomarkers in symptomatic patients with suspected AD. MATERIAL AND METHODS: A retrospective review was carried out on 120 patients with cognitive impairment referred to our Cognitive Neurology Unit, and who were evaluated by brain FDG-PET and a lumbar puncture for CSF biomarkers...
June 20, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28645559/multicenter-prevalence-of-opioid-medication-use-as-abortive-therapy-in-the-emergency-department-treatment-of-migraine-headaches
#8
Neil Young, Daniel Silverman, Heather Bradford, Jeffrey Finkelstein
Despite a range of therapeutic options for treating acute migraine headaches, the use of opioids is still reported to be common practice. This study describes treatment practices in regards to migraines in the ED. It characterizes the prevalence of opioid orders during visits in three different settings, an academic medical center, a non-academic urban ED, and a community ED. Fourteen months of consecutive migraine visits were identified. All medications ordered were separated into first-line and rescue medications...
June 16, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28645457/diagnostic-medical-imaging-in-pediatric-patients-and-subsequent-cancer-risk
#9
REVIEW
David J Mulvihill, Sachin Jhawar, John B Kostis, Sharad Goyal
The use of diagnostic medical imaging is becoming increasingly more commonplace in the pediatric setting. However, many medical imaging modalities expose pediatric patients to ionizing radiation, which has been shown to increase the risk of cancer development in later life. This review article provides a comprehensive overview of the available data regarding the risk of cancer development following exposure to ionizing radiation from diagnostic medical imaging. Attention is paid to modalities such as computed tomography scans and fluoroscopic procedures that can expose children to radiation doses orders of magnitude higher than standard diagnostic x-rays...
June 20, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28645279/diabetes-care-in-a-complex-humanitarian-emergency-setting-a-qualitative-evaluation
#10
Adrianna Murphy, Michel Biringanine, Bayard Roberts, Beverley Stringer, Pablo Perel, Kiran Jobanputra
BACKGROUND: Evidence is urgently needed from complex emergency settings to support efforts to respond to the increasing burden of diabetes mellitus (DM). We conducted a qualitative study of a new model of DM health care (Integrated Diabetic Clinic within an Outpatient Department [IDC-OPD]) implemented by Médecins Sans Frontières (MSF) in Mweso Hospital in eastern Democratic Republic of Congo (DRC). We aimed to explore patient and provider perspectives on the model in order to identify factors that may support or impede it...
June 23, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28645278/the-impact-of-mobile-phone-based-messages-on-maternal-and-child-healthcare-behaviour-a-retrospective-cross-sectional-survey-in-bangladesh
#11
Mafruha Alam, Catherine D'Este, Cathy Banwell, Kamalini Lokuge
BACKGROUND: Mobile phones are gradually becoming an integral part of healthcare services worldwide. We assessed the association between Aponjon mobile phone based messaging services and practices regarding childbirth and care of mother and neonates in selected areas in Bangladesh. METHODS: In early 2014, 476 subscriber mothers whose last born child's age was between 3 and 18 months, were recruited to the study by Dnet from selected areas of Bangladesh. One group of mothers received the early warning messages from Aponjon during pregnancy (exposed; n = 210) while the other group of new mothers did not receive the messages during pregnancy as they had enrolled in the service after childbirth (non-exposed; n = 266)...
June 24, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28645042/the-changing-health-priorities-of-earthquake-response-and-implications-for-preparedness-a-scoping-review
#12
REVIEW
C Cartwright, M Hall, A C K Lee
OBJECTIVES: Earthquakes have substantial impacts on mortality in low- and middle-income countries (LMIC). The academic evidence base to support Disaster Risk Reduction activities in LMIC settings is, however, limited. We sought to address this gap by identifying the health and healthcare impacts of earthquakes in LMICs and to identify the implications of these findings for future earthquake preparedness. STUDY DESIGN: Scoping review. METHODS: A scoping review was undertaken with systematic searches of indexed databases to identify relevant literature...
June 20, 2017: Public Health
https://www.readbyqxmd.com/read/28644813/sufficient-condition-for-the-existence-of-the-compact-set-in-the-rbf-neural-network-control
#13
Jiaming Zhu, Zhiqiang Cao, Tianping Zhang, Yuequan Yang, Yang Yi
In this brief, sufficient conditions are proposed for the existence of the compact sets in the neural network controls. First, we point out that the existence of the compact set in a classical neural network control scheme is unsolved and its result is incomplete. Next, as a simple case, we derive the sufficient condition of the existence of the compact set for the neural network control of first-order systems. Finally, we propose the sufficient condition of the existence of the compact set for the neural-network-based backstepping control of high-order nonlinear systems...
June 20, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28644802/fully-non-linear-sp3-approximation-based-fluorescence-optical-tomography
#14
Naren Naik, Nishigandha Patil, Yamini Yadav, Jerry Eriksson, Asima Pradhan
In fluorescence optical tomography, many works in literature focus on the linear reconstruction problem to obtain the fluorescent yield or the linearized reconstruction problem to obtain the absorption coefficient. The nonlinear reconstruction problem, to reconstruct the fluorophore absorption coefficient, is of interest in imaging studies as it presents the possibility of better reconstructions owing to a more appropriate model. Accurate and computationally efficient forward models are also critical in the reconstruction process...
June 21, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28644706/advance-care-planning-and-palliative-care-integration-for-patients-undergoing-hematopoietic-stem-cell-transplantation
#15
Winnie S Wang, Joseph D Ma, Sandahl H Nelson, Carolyn Revta, Gary T Buckholz, Carolyn M Mulroney, Eric J Roeland
PURPOSE: Advance care planning (ACP) in hematopoietic stem-cell transplantation (HSCT) is challenging, given the potential for cure despite increased morbidity and mortality risk.The aim of this study was to evaluate ACP and palliative care (PC) integration for patients who underwent HSCT. METHODS: A retrospective analysis was conducted and data were extracted from electronic medical records of patients who underwent HSCT between January 2011 and December 2015. Patients who received more than one transplant and who were younger than 18 years of age were excluded...
June 23, 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28644616/importance-of-a-fully-anharmonic-treatment-of-equilibrium-isotope-fractionation-properties-of-dissolved-ionic-species-as-evidenced-by-li-aq
#16
Romain Dupuis, Magali Benoit, Mark E Tuckerman, Merlin Méheut
Equilibrium fractionation of stable isotopes is critically important in fields ranging from chemistry, including medicinal chemistry, electrochemistry, geochemistry, and nuclear chemistry, to environmental science. The dearth of reliable estimates of equilibrium fractionation factors, from experiment or from natural observations, has created a need for accurate computational approaches. Because isotope fractionation is a purely quantum mechanical phenomenon, exact calculation of fractionation factors is nontrivial...
June 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28643529/correlation-between-adenoma-detection-rate-and-novel-quality-indicators-for-screening-colonoscopy-a-proposal-for-quality-measures-tool-kit
#17
Mohamed M Abdelfatah, Sherif Elhanafi, Marc J Zuckerman, Mohamed O Othman
BACKGROUND AND AIMS: Adenoma detection rate (ADR) is the most validated quality indicator for colonoscopy. Calculating ADR may not yield information in regards to advanced adenoma detection rate (advanced ADR). In addition, calculating ADR for individual endoscopists cannot distinguish between those who find only one versus more than one adenoma per colonoscopy. Several novel quality indictors were recently proposed to ensure adequate assessment of quality during colonoscopy. Our study aims to determine the correlation between ADR and novel quality indicators...
June 23, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28643473/can-the-propensity-of-protein-crystallization-be-increased-by-using-systematic-screening-with-metals
#18
REVIEW
Raghurama P Hegde, Pavithra G Chinnaswamy, Debayan Dey, Steven C Almo, S Ramakumar, Udupi A Ramagopal
Protein crystallization is one of the major bottlenecks in protein structure elucidation with new strategies being constantly developed to improve the chances of crystallization. Generally, well-ordered epitopes possessing complementary-surface and capable of producing stable inter-protein interactions generate a regular three-dimensional arrangement of protein molecules which eventually results in a crystal lattice. Metals, when used for crystallization, with their various coordination numbers and geometries, can generate such epitopes mediating protein oligomerization and/or establish crystal contacts...
June 23, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28643389/combined-molecular-modelling-and-3d-qsar-study-for-understanding-the-inhibition-of-nqo1-by-heterocyclic-quinone-derivatives
#19
Claudia Lopez-Lira, Jans H Alzate-Morales, Margot Paulino, Jaime Mella-Raipán, Cristian O Salas, Ricardo A Tapia, Jorge Soto-Delgado
A combination of three-dimensional quantitative structure-activity relationship (3D-QSAR), and molecular modelling methods were used to understand the potent inhibitory NAD(P)H:quinone oxidoreductase 1 (NQO1) activity of a set of 52 heterocyclic quinones. Molecular docking results indicated that some favourable interactions of key amino acid residues at the binding site of NQO1 with these quinones, would be responsible for an improvement of the NQO1 activity of these compounds. The main interactions involved are hydrogen bond of the amino group of residue Tyr128, π-stacking interactions with Phe106 and Phe178, and electrostatic interactions with flavin adenine dinucleotide (FADH) cofactor...
June 23, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28643081/distraction-osteogenesis-reconstruction-of-large-segmental-bone-defects-after-primary-tumor-resection-pitfalls-and-benefits
#20
REVIEW
Jan Lesensky, Daniel E Prince
Successful cure is achieved in almost 70% of patients with primary bone sarcomas with currently available therapies. Some soft tissue sarcomas require wide bone resection in order to achieve appropriate margins for cure of disease, and patients undergoing these procedures need durable reconstruction. Biological reconstruction has been shown to provide patients with superior long-term results over other alternatives. Distraction osteogenesis is well studied in the correction of deformities as well as in addressing some congenital musculoskeletal pathologies...
June 22, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
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