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https://www.readbyqxmd.com/read/29235668/a-diaper-bank-and-home-visiting-partnership-initial-exploration-of-research-and-policy-questions
#1
Lois S Sadler, Eileen M Condon, Shirley Z Deng, Monica Roosa Ordway, Crista Marchesseault, Andrea Miller, Janet Stolfi Alfano, Alison M Weir
OBJECTIVES: The cost of diapering an infant can place a significant financial strain on families living in poverty. Partnerships between diaper banks and home visiting programs for young families may offer an innovative solution to expanding the reach and impact of diaper banks in low-income communities. The purpose of this pilot study was to uncover preliminary information about the functions of diaper distribution through home visiting programs, and to inform future research and policy questions regarding diaper distribution to families in need...
December 13, 2017: Public Health Nursing
https://www.readbyqxmd.com/read/29235590/unravelling-the-hydrophobicity-of-urea-in-water-using-thermodiffusion-implications-for-protein-denaturation
#2
Doreen Niether, Silvia Di Lecce, Fernando Bresme, Simone Wiegand
Urea is widely used as a protein denaturant in aqueous solutions. Experimental and computer simulation studies have shown that it dissolves in water almost ideally at high concentrations, introducing little disruption in the water hydrogen bonded structure. However, at concentrations of the order of 5 M or higher, urea induces denaturation in a wide range of proteins. The origin of this behaviour is not completely understood, but it is believed to stem from a balance between urea-protein and urea-water interactions, with urea becoming possibly hydrophobic at a specific concentration range...
December 13, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29233015/the-benefits-of-folic-acid-modified-gold-nanoparticles-in-ct-based-molecular-imaging-radiation-dose-reduction-and-image-contrast-enhancement
#3
Jaber Beik, Maryam Jafariyan, Alireza Montazerabadi, Ali Ghadimi-Daresajini, Parastoo Tarighi, Alireza Mahmoudabadi, Habib Ghaznavi, Ali Shakeri-Zadeh
X-ray computed tomography (CT) requires an optimal compromise between image quality and patient dose. While high image quality is an important requirement in CT, the radiation dose must be kept minimal to protect the patients from ionizing radiation-associated risks. The use of probes based on gold nanoparticles (AuNPs) along with active targeting ligands for specific recognition of cancer cells may be one of the balanced solutions. Herein, we report the effect of folic acid (FA)-modified AuNP as a targeted nanoprobe on the contrast enhancement of CT images as well as its potential for patient dose reduction...
December 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29232732/high-salt-intake-promotes-different-responses-to-urodilatin-and-uroguanylin-in-the-isolated-rat-kidney
#4
Antonio Rafael Coelho Jorge, Pedro Henrique Sá Costa, Helena Serra Azul Monteiro, Manassés Claudino Fonteles
Urodilatin (UD) and uroguanylin (UGN) have been implicated in the regulation of salt and water homeostasis, particularly in the balance handling of salt intake. In this sense, the aim of the present work was to study the main effects of these peptides in kidneys from animals subjected to high NaCl (2%) intake, during 10 days in metabolic cages. The control group received only normal water, whereas the treated group drank 2% solution of NaCl (NaCl 2%). In addition, we studied effect of subthreshold UD (0.14 nM) and UGN (0...
December 12, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29232602/cooperative-protein-unfolding-a-statistical-mechanical-model-for-the-action-of-denaturants
#5
J Seelig
Knowledge of protein stability is of utmost importance in various fields of biotechnology. Protein stability can be assessed in solution by increasing the concentration of denaturant and recording the structural changes with spectroscopic or thermodynamic methods. The standard interpretation of the experimental data is to assume a 2-state equilibrium between completely folded and completely unfolded protein molecules. Here we propose a cooperative model based on the statistical-mechanical Zimm-Bragg theory...
December 5, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/29227430/continuing-education-meets-the-learning-organization-the-challenge-of-a-systems-approach-to-patient-safety
#6
John M Eisenberg
Since the release of the report of the Institute of Medicine on medical errors and patient safety in November 1999, health policy makers and health care leaders in several nations have sought solutions that will improve the safety of health care. This attention to patient safety has highlighted the importance of a learning approach and a systems approach to quality measurement and improvement. Balanced with the need for public disclosure of performance, confidential reporting with feedback is one of the prime ways that nations such as the United States, Canada, the United Kingdom, and Australia have approached this challenge...
October 2017: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/29227185/alternative-drug-delivery-for-patients-undergoing-cataract-surgery-as-demonstrated-in-a-canine-model
#7
L David Waterbury
PURPOSE: (1) To determine ketorolac concentrations in selected ocular tissues following the intracameral administration of phenylephrine and ketorolac injection 1%/0.3% (OMIDRIA®) delivered in irrigation solution during lens replacement surgery in beagle dogs. (2) To compare the ketorolac initial dose and resultant concentrations from the above study to those achieved in aqueous and vitreous by topical administration in patients undergoing cataract surgery or vitrectomy, respectively...
December 11, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29223847/funding-breakthrough-therapies-a-systematic-review-and-recommendation
#8
REVIEW
E Hanna, M Toumi, C Dussart, B Borissov, O Dabbous, K Badora, P Auquier
BACKGROUND: Advanced therapy medicinal products (ATMPs) are innovative therapies likely associated with high prices. Payers need guidance to create a balance between ensuring patient access to breakthrough therapies and maintaining the financial sustainability of the healthcare system. OBJECTIVE: The aims of this study were to identify, define, classify and compare the approaches to funding high-cost medicines proposed in the literature, to analyze their appropriateness for ATMP funding and to suggest an optimal funding model for ATMPs...
December 2, 2017: Health Policy
https://www.readbyqxmd.com/read/29222075/examining-tensions-that-affect-the-evaluation-of-technology-in-health-care-considerations-for-system-decision-makers-from-the-perspective-of-industry-and-evaluators
#9
Laura Desveaux, James Shaw, Ross Wallace, Onil Bhattacharyya, R Sacha Bhatia, Trevor Jamieson
Virtual technologies have the potential to mitigate a range of challenges for health care systems. Despite the widespread use of mobile devices in everyday life, they currently have a limited role in health service delivery and clinical care. Efforts to integrate the fast-paced consumer technology market with health care delivery exposes tensions among patients, providers, vendors, evaluators, and system decision makers. This paper explores the key tensions between the high bar for evidence prior to market approval that guides health care regulatory decisions and the "fail fast" reality of the technology industry...
December 8, 2017: JMIR Medical Informatics
https://www.readbyqxmd.com/read/29221978/influence-of-6-hydroxyethyl-starch-130-0-4-versus-crystalloid-solution-on-structural-renal-damage-markers-after-coronary-artery-bypass-grafting-a-post-hoc-subgroup-analysis-of-a-prospective-trial
#10
Thomas Datzmann, Markus Hoenicka, Helmut Reinelt, Andreas Liebold, Hagen Gorki
OBJECTIVE: The restriction of hydroxyethyl starch (HES) has mandated changes in volume management based on data of critically ill patients. Reliable data of structural renal damage after HES treatment in cardiac surgical patients are lacking. The influence of 6% HES 130/0.4 was investigated in this study. DESIGN: An exploratory post hoc subgroup analysis of a prospective trial was performed. SETTING: The study was carried out at a university hospital...
May 25, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29221408/exploring-a-multi-scale-method-for-molecular-simulation-in-continuum-solvent-model-explicit-simulation-of-continuum-solvent-as-an-incompressible-fluid
#11
Li Xiao, Ray Luo
We explored a multi-scale algorithm for the Poisson-Boltzmann continuum solvent model for more robust simulations of biomolecules. In this method, the continuum solvent/solute interface is explicitly simulated with a numerical fluid dynamics procedure, which is tightly coupled to the solute molecular dynamics simulation. There are multiple benefits to adopt such a strategy as presented below. At this stage of the development, only nonelectrostatic interactions, i.e., van der Waals and hydrophobic interactions, are included in the algorithm to assess the quality of the solvent-solute interface generated by the new method...
December 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29221006/optical-peregrine-rogue-waves-of-self-induced-transparency-in-a-resonant-erbium-doped-fiber
#12
Shihua Chen, Yanlin Ye, Fabio Baronio, Yi Liu, Xian-Ming Cai, Philippe Grelu
The resonant interaction of an optical field with two-level doping ions in a cryogenic optical fiber is investigated within the framework of nonlinear Schrödinger and Maxwell-Bloch equations. We present explicit fundamental rational rogue wave solutions in the context of self-induced transparency for the coupled optical and matter waves. It is exhibited that the optical wave component always features a typical Peregrine-like structure, while the matter waves involve more complicated yet spatiotemporally balanced amplitude distribution...
November 27, 2017: Optics Express
https://www.readbyqxmd.com/read/29220494/soapnuke-a-mapreduce-acceleration-supported-software-for-integrated-quality-control-and-preprocessing-of-high-throughput-sequencing-data
#13
Yuxin Chen, Yongsheng Chen, Chunmei Shi, Zhibo Huang, Yong Zhang, Shengkang Li, Yan Li, Jia Ye, Chang Yu, Zhuo Li, Xiuqing Zhang, Jian Wang, Huanming Yang, Lin Fang, Qiang Chen
Quality Control (QC) and preprocessing are essential steps for sequencing data analysis to ensure the accuracy of results. However, existing tools cannot provide a satisfying solution with integrated comprehensive functions, proper architectures and highly-scalable acceleration. In this article, we demonstrate SOAPnuke as a tool with abundant functions for a "QC-Preprocess-QC" workflow and MapReduce acceleration framework. Four modules with different preprocessing functions are designed for processing datasets from genomic, small RNA (sRNA), Digital Gene Expression (DGE) and metagenomic experiments respectively...
December 4, 2017: GigaScience
https://www.readbyqxmd.com/read/29220054/experimental-and-theoretical-studies-on-the-nlo-properties-of-two-quaternary-non-centrosymmetric-chalcogenides-baag2ges4-and-baag2sns4
#14
Hong Chen, Pei-Fei Liu, Bing-Xuan Li, Hua Lin, Li-Ming Wu, Xin-Tao Wu
New middle and far-infrared (MFIR) nonlinear optical (NLO) chalcogenides have been receiving increasing attention for their great importance in military and civil fields. In addition, the current challenge in the efforts for identifying a promising MFIR NLO material lies in achieving simultaneously large second-harmonic generation (SHG) intensity and high laser-induced damage threshold (LIDT) in the same material. In this study, two quaternary non-centrosymmetric (NCS) sulfides, BaAg2GeS4 (1) and BaAg2SnS4 (2), were synthesized from a high-temperature solid-state reaction using BaCl2 flux in evacuated closed silica tubes...
December 8, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29216789/open-book-exams-a-potential-solution-to-the-full-curriculum
#15
Andrew Teodorczuk, James Fraser, Gary D Rogers
In this Personal View article, as curriculum designers, we consider whether there is a place for open book exams in Medical School curricula. Specifically, at a time when medical teachers complain about the difficulties of delivering a full curriculum, we propose that open book assessment approaches may help to free up the curriculum as learners become less reliant on memorizing facts. Moreover deeper learning of higher level outcomes can be achieved and more authentic assessment approaches undertaken. We also look at the recent literature and consider reasons, both for and against open book exams, at theoretical and practical levels...
December 7, 2017: Medical Teacher
https://www.readbyqxmd.com/read/29215261/an-interface-equilibria-triggered-time-dependent-diffusion-model-of-the-boundary-potential-and-its-application-for-the-numerical-simulation-of-the-ion-selective-electrode-response-in-real-systems
#16
Vladimir V Egorov, Andrei D Novakovskii, Elena A Zdrachek
A simple dynamic model of the phase boundary potential of ion-selective electrodes is presented. The model is based on the calculations of the concentration profiles of the components in membrane and sample solution phases by means of finite difference method. The fundamental idea behind the discussed model is that the concentration gradients in membrane and sample solution phases determine only the diffusion of the components inside corresponding phases, but not the transfer across the interface. The transfer of the components across the interface at any instant of time is determined by the corresponding local interphase equilibria...
December 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29214802/tmao-counteracts-urea-denaturation-by-inhibiting-protein-urea-preferential-interaction
#17
Pritam Ganguly, Pablo Boserman, Nico F A van der Vegt, Joan-Emma Shea
Osmolytes are small organic molecules that can modulate the stability and function of cellular proteins by altering the chemical environment of the cell. Some of these osmolytes work in conjunction, via mechanisms that are poorly understood. An example is the naturally-occurring protein-protective osmolyte trimethylamine N-oxide (TMAO) that stabilizes cellular proteins in marine organisms against the detrimental denaturing effects of another naturally occurring osmolyte, urea. From a computational standpoint, our understanding of this counteraction mechanism is hampered by the fact that existing force fields fail to capture the correct balance of TMAO and urea interactions in ternary solutions...
December 7, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29214239/protonation-enhances-the-inherent-helix-forming-propensity-of-phlip
#18
Chitrak Gupta, Blake Mertz
Cell-penetrating peptides (CPPs) can be potentially used in targeted delivery of therapeutic cargoes. However, their conformation in solution is poorly understood. We employed molecular dynamics simulations to probe the structural fluctuations of an anionic CPP, pH Low Insertion Peptide (pHLIP), in solution to determine the effects of modifications to selected residues on the structure of pHLIP. Two types of modifications were tested: (1) protonation of aspartic acid residues and (2) point mutations known to affect the acid sensitivity of pHLIP...
November 30, 2017: ACS Omega
https://www.readbyqxmd.com/read/29212347/oxidative-stress-a-unifying-mechanism-for-cell-damage-induced-by-noise-water-pipe-smoking-and-emotional-stress-therapeutic-strategies-targeting-redox-imbalance
#19
Saeid Golbidi, Huige Li, Ismail Laher
SIGNIFICANCE: Modern technologies have eased our lives but these conveniences can impact our lifestyles in destructive ways. Noise pollution, mental stresses, and smoking (as a stress-relieving solution) are some environmental hazards which affect our well-being and health care budgets. Scrutinizing their pathophysiology could lead to solutions to reduce their harmful effects. Recent advances: Oxidative stress plays an important role in initiating local and systemic inflammation following noise pollution, mental stress, and smoking...
December 6, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29212053/contaminant-back-diffusion-from-low-permeability-layers-as-affected-by-groundwater-velocity-a-laboratory-investigation-by-box-model-and-image-analysis
#20
Fabio Tatti, Marco Petrangeli Papini, Giuseppe Sappa, Massimo Raboni, Firoozeh Arjmand, Paolo Viotti
Low-permeability lenses represent potential sources of long-term release when filled from contaminant solute through direct contact with dissolved plumes. The redistribution of contaminant from low to high permeability aquifer zones (Back-Diffusion) was studied. Redistribution causes a long plume tail, commonly regarded as one of the main obstacles to effective groundwater remediation. Laboratory tests were performed to reproduce the redistribution process and to investigate the effect of pumping water on the remediation time of these contaminated low-permeability lenses...
December 3, 2017: Science of the Total Environment
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