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https://www.readbyqxmd.com/read/29458200/influence-of-treatment-modality-on-morbidity-and-mortality-in-periprosthetic-femoral-fracture-a-comparative-study-of-71-fractures-treated-by-internal-fixation-or-femoral-implant-revision
#1
S Cohen, X Flecher, S Parratte, M Ollivier, J N Argenson
INTRODUCTION: The incidence of periprosthetic femoral fracture is constantly increasing, with high associated morbidity and mortality. Surgical treatment is guided by the Vancouver classification, but the influence of type of treatment on morbidity and mortality has been little analyzed. The theoretic advantage of implant revision over internal fixation is that it should allow earlier weight-bearing, although the impact of this on morbidity and mortality and autonomy has not been demonstrated...
February 16, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29458193/attenuation-of-neuro-inflammation-improves-survival-and-neurodegeneration-in-a-mouse-model-of-severe-neonatal-hyperbilirubinemia
#2
Simone Vodret, Giulia Bortolussi, Alessandra Iaconcig, Elena Martinelli, Claudio Tiribelli, Andrés F Muro
All pre-term newborns and a high proportion of term newborns develop neonatal jaundice. Neonatal jaundice is usually a benign condition and self-resolves within few days after birth. However, a combination of unfavorable complications may lead to acute hyperbilirubinemia. Excessive hyperbilirubinemia may be toxic for the developing nervous system leading to severe neurological damage and death by kernicterus. Survivors show irreversible neurological deficits such as motor, sensitive and cognitive abnormalities...
February 16, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29458171/toxicology-studies-of-furosine-in-vitro-in-vivo-and-exploration-of-the-related-mechanism
#3
Hui-Ying Li, Lei Xing, Jia-Qi Wang, Nan Zheng
AIM: Furosine is one of the Maillard reaction products (MRPs) and is found in a variety of heat-processed food. Yet its toxicity is still unclear. The present study was designed to assess furosine toxicity in cell models and in CD-1 mice, respectively. METHODS: In vitro, the effects of furosine on the cell viability, cell cycle and apoptosis (Hek293, HepG2, SK-N-SH and Caco2) were detected and evaluated, sensitive cell lines and proper dosage of furosine for further animal experiment were determined, and the mechanisms of toxicity were explored...
February 16, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29458166/statistical-approach-for-selection-of-biologically-informative-genes
#4
Samarendra Das, Anil Rai, D C Mishra, S N Rai
Selection of informative genes from high dimensional gene expression data has emerged as an important research area in genomics. Many gene selection techniques have been proposed so far are either based on relevancy or redundancy measure. Further, the performance of these techniques has been adjudged through post selection classification accuracy computed through a classifier using the selected genes. This performance metric may be statistically sound but may not be biologically relevant. A statistical approach, i...
February 16, 2018: Gene
https://www.readbyqxmd.com/read/29458114/severity-dependent-influence-of-isocapnic-hypoxia-on-reaction-time-is-independent-of-neurovascular-coupling
#5
Hannah G Caldwell, Geoff B Coombs, Michael M Tymko, Daniela Nowak-Flück, Philip N Ainslie
With exposure to acute normobaric hypoxia, global cerebral oxygen delivery is maintained via increases in cerebral blood flow (CBF); therefore, regional and localized changes in oxygen tension may explain neurocognitive impairment. Neurovascular coupling (NVC) is the close temporal and regional relationship of CBF to changes in neural activity and may aid in explaining the localized CBF response with cognitive activation. High-altitude related cognitive impairment is likely affected by hypocapnic cerebral vasoconstriction that may influence regional CBF regulation independent of hypoxia...
February 16, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29458102/%C3%AE-irradiated-chitosan-based-injectable-hydrogels-for-controlled-release-of-drug-montelukast-sodium
#6
Sadaf Hafeez, Atif Islam, Nafisa Gull, Abbas Ali, Shahzad Maqsood Khan, Saba Zia, Kalsoom Anwar, Saba Urooge Khan, Tahir Jamil
Novel pH-sensitive γ-irradiated low molecular weight chitosan (CS) (pre-irradiated) and poly (vinyl alcohol) (PVA) blended injectable hydrogels, crosslinked with varying concentrations of glycerol, were fabricated for drug delivery application. The effect of low molecular weight irradiated CS on controlled drug release was evaluated to address the problem of higher viscosity and lower solubility of high molecular weight CS. The FTIR spectra of hydrogels depicted the presence of all the incorporated functional groups and the developed interactions (physical and chemical)...
February 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29458078/isolation-of-intact-rna-from-murine-cd4-t-cells-after-intracellular-cytokine-staining-and-fluorescence-activated-cell-sorting
#7
Shajo Kunnath-Velayudhan, Steven A Porcelli
Intracellular cytokine staining (ICS) is a powerful method for identifying functionally distinct lymphocyte subsets, and for isolating these by fluorescence activated cell sorting (FACS). Although transcriptomic analysis of cells sorted on the basis of ICS has many potential applications, this is rarely performed because of the difficulty in isolating intact RNA from cells processed using standard fixation and permeabilization buffers for ICS. To address this issue, we compared three buffers shown previously to preserve RNA in nonhematopoietic cells subjected to intracellular staining for their effects on RNA isolated from T lymphocytes processed for ICS...
February 17, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29458053/circulating-bile-acids-in-healthy-adults-respond-differently-to-a-dietary-pattern-characterized-by-whole-grains-legumes-and-fruits-and-vegetables-compared-to-a-diet-high-in-refined-grains-and-added-sugars-a-randomized-controlled-crossover-feeding-study
#8
Bigina N R Ginos, Sandi L Navarro, Yvonne Schwarz, Haiwei Gu, Dongfang Wang, Timothy W Randolph, Ali Shojaie, Meredith A J Hullar, Paul D Lampe, Mario Kratz, Marian L Neuhouser, Daniel Raftery, Johanna W Lampe
OBJECTIVE: The effects of diets high in refined grains on biliary and colonic bile acids have been investigated extensively. However, the effects of diets high in whole versus refined grains on circulating bile acids, which can influence glucose homeostasis and inflammation through activation of farnesoid X receptor (FXR) and G protein-coupled bile acid receptor 1 (TGR5), have not been studied. MATERIALS AND METHODS: We conducted a secondary analysis from a randomized controlled crossover feeding trial (NCT00622661) in 80 healthy adults (40 women/40 men, age 18-45 years) from the greater Seattle Area, half of which were normal weight (BMI 18...
February 16, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29458015/sulfenamide-and-sulfonamide-derivatives-of-metformin-can-exert-anti-coagulant-and-pro-fibrinolytic-properties
#9
Magdalena Markowicz-Piasecka, Kristiina M Huttunen, Łukasz Mateusiak, Elżbieta Mikiciuk-Olasik, Joanna Sikora
Type 2 diabetes mellitus (T2DM) is characterised not only by hyperglycaemia and insulin resistance but also an impaired balance between the processes of coagulation and fibrinolysis. The aim of this study was to examine the effects of metformin, a widely-used oral anti-diabetic drug, phenformin and eight sulfenamide and sulfonamide derivatives of metformin on several haemostasis parameters. Thrombin Time (TT) tests were performed according to the available commercial method. The activity of factor X was conducted based on deficient plasma factor X...
February 16, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29457973/pyrazole-tetrazole-hybrid-bearing-the-trinitromethyl-fluorodinitromethyl-or-difluoroamino-dinitromethyl-groups-high-performance-energetic-materials
#10
Aleksei B Sheremetev, Igor L Dalinger, Nikita V Muravyev, Kyrill Yu Suponitsky, Aleksandr V Kormanov
High nitrogen compounds have acquired great scientific interest and technological importance because of their unique energy content, and they find diverse applications in many fields of science and technology. Understanding of structure-property relationship trends as well as how to modify them is of paramount importance for their further improvement. Herein, we have used installation of oxygen-rich modules, C(NO2)3, C(NO2)2F or C(NO2)2NF2, to a endothermic framework, that is combination of nitropyrazole unit and tetrazole ring, as a way to design novel energetic compounds...
February 19, 2018: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29457972/a-stable-metal-organic-framework-featuring-local-buffer-environment-for-carbon-dioxide-fixation
#11
Hongming He, Qi Sun, Wenyang Gao, Jason A Perman, Fuxing Sun, Guangshan Zhu, Briana Aguila, Katherine Forrest, Brian Space, Shengqian Ma
A majority of metal-organic frameworks (MOFs) fail to preserve their physical and chemical properties after exposure to acidic, neutral, or alkaline aqueous solutions, therefore limiting their practical applications in many areas. The strategy demonstrated herein is the design and synthesis of an organic ligand that behaves as a buffer to drastically boost the aqueous stability of a porous MOF (JUC-1000), which maintains its structural integrity at low and high pH values. The local buffer environment resulting from the weak acid-base pairs of the custom-designed organic ligand also greatly facilitates the performance of JUC-1000 in the chemical fixation of carbon dioxide under ambient conditions, outperforming a series of benchmark catalysts...
February 19, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29457969/an-evaluation-of-the-operational-model-when-applied-to-quantify-functional-selectivity
#12
Xiao Zhu, David B Finlay, Michelle Glass, Stephen B Duffull
BACKGROUND AND PURPOSE: Functional selectivity describes the ability of ligands to differentially regulate multiple signalling pathways when coupled to a single receptor and the operational model is commonly used to analyse these data. Here, we assess the mathematical properties of the operational model and evaluate the impact of fixing parameters on model performance. EXPERIMENTAL APPROACH: The operational model was evaluated using both a mathematical identifiability analysis and simulation...
February 19, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29457950/knowledge-and-skills-of-critical-care-nurses-in-assisting-with-intubation
#13
Chris Williams, Andrew Parry
Assisting with tracheal intubation is an aspect of clinical practice that requires knowledge and skill if the procedure is to be carried out in a timely and safe manner. Maintaining this knowledge and skill requires good quality education and regular opportunities to practise. These two factors appear to be inconsistent in critical care units. This article details an audit performed on a large tertiary referral centre critical care unit. It was undertaken in two phases: the first was a self-assessment of knowledge and the second was a practical assessment of the audit subjects in a simulated setting...
February 22, 2018: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29457932/oral-health-related-outcomes-in-edentulous-patients-treated-with-mandibular-implant-retained-dentures-versus-complete-dentures-systematic-review-with-meta-analyses
#14
Philip Kroll, Lisa Hou, Hani Radaideh, Nazanin Sharifi, Phuu P Han, Roseann Mulligan, Reyes Enciso
The objective of this systematic review was to determine the effect on oral health-related outcomes from mandibular implant-retained dentures opposing maxillary complete dentures in edentulous middle-age and older adults compared to complete removable dentures in both arches. Randomized controlled trials with an average age of the participants being 65 years old or above were included. The Cochrane Library, MEDLINE and Web of Science were searched. A total of 228 abstracts were reviewed for inclusion criteria with fourteen trials included and analyzed for risk of bias...
February 19, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29457908/process-proteomics-of-beer-reveals-a-dynamic-proteome-with-extensive-modifications
#15
Benjamin L Schulz, Toan K Phung, Michele Bruschi, Agnieszka Janusz, Jeff Stewart, John Mehan, Peter Healy, Amanda S Nouwens, Glen P Fox, Claudia E Vickers
Modern beer production is a complex industrial process. However, some of its biochemical details remain unclear. Using mass spectrometry proteomics, we have performed a global untargeted analysis of the proteins present across time during nano-scale beer production. Samples included sweet wort produced by a high temperature infusion mash, hopped wort, and bright beer. This analysis identified over 200 unique proteins from barley and yeast, emphasizing the complexity of the process and product. We then used data independent SWATH-MS to quantitatively compare the relative abundance of these proteins throughout the process...
February 19, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29457889/rapid-microwave-preparation-and-composition-tuning-of-the-high-performance-magnetocalorics-mn-fe-2-p-si
#16
Jason H Grebenkemper, Joshua D Bocarsly, Emily E Levin, Gareth Seward, Colin Heikes, Craig Brown, Sumohan Misra, Fabian Seeler, Kerstin Schierle-Arndt, Stephen D Wilson, Ram Seshadri
Rapid preparation utilizing assisted microwave heating permits significantly shorter preparation times for magnetocaloric compounds in the (Mn,Fe)2 (P,Si) family, specifically samples of (Mn,Fe)2-δ P0.5 Si0.5 with starting compositions of δ = 0, 0.06, and 0.12. To fully understand the effects of processing and composition changes on structure and properties, these materials are characterized using synchrotron powder diffraction, neutron powder diffraction, electron microprobe analysis (EMPA), X-ray fluorescence (XRF), and magnetic measurements...
February 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29457803/temperature-and-humidity-calibration-of-a-low-cost-wireless-dust-sensor-for-real-time-monitoring
#17
Hannaneh Hojaiji, Haik Kalantarian, Alex A T Bui, Christine E King, Majid Sarrafzadeh
This paper introduces the design, calibration, and validation of a low-cost portable sensor for the real-time measurement of dust particles within the environment. The proposed design consists of low hardware cost and calibration based on temperature and humidity sensing to achieve accurate processing of airborne dust density. Using commercial particulate matter sensors, a highly accurate air quality monitoring sensor was designed and calibrated using real world variations in humidity and temperature for indoor and outdoor applications...
March 2017: 2017 IEEE Sens Appl Symp (SAS) (2017)
https://www.readbyqxmd.com/read/29457779/embedding-ultrafine-znsno3-nanoparticles-into-reduced-graphene-oxide-composites-as-high-performance-electrodes-for-lithium-ion-batteries
#18
Yuhang Ma, Ranran Jiang, Dan Li, Yutao Dong, Yushan Liu, Jianmin Zhang
Ultrafine ZnSnO3 nanoparticles, with an average diameter of 45 nm, homogeneously grown on reduced graphene oxide (rGO) have been successfully fabricated via the methods of low temperature coprecipitation, colloid electrostatic self-assembly, and hydrothermal treatment. The uniformly distributed ZnSnO3 nanocrystals could inhibit the restacking of rGO sheets. In turn, the existence of rGO could hinder the growth and aggregation of ZnSnO3 nanoparticles in the synthesis process, increase the conductivity of the composite, and buffer the volume expansion of the ZnSnO3 nanocrystals upon lithium ion insertion and extraction...
February 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29457778/theoretical-investigation-of-performance-of-armchair-graphene-nanoribbon-field-effect-transistors
#19
Ji-Hyun Hur, Deok-Kee Kim
In this paper, we examine the highest possible performance level of graphene nanoribbon field effect transistors (GNRFETs) for wide range of operation voltages and device structure parameters such as width of graphene nanoribbon and gate length. To achieve this goal, we formulated a self-consistent non-equilibrium Green's function (NEGF) method in conjunction with the Poisson equation. We model the operation of nanometer sized GNRFETs of which GNR channels have finite bandgaps so that the GNRFET can operate as a switch...
February 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29457776/free-anchored-nb2o5-graphene-networks-for-ultrafast-stable-lithium-storage
#20
Qinglin Deng, Mengjiao Li, Junyong Wang, Kai Jiang, Zhigao Hu, Junhao Chu
Orthorhombic Nb$_2$O$_5$ (T-Nb$_2$O$_5$) has structural merit but poor electrical conductivity, limiting their applications in energy storage. Although graphene is frequently adopted to effectively improve its electrochemical properties, the ordinary modified methods cannot meet the growing demands for high-performance. Here, we demonstrate that different graphene modified routes play a vital role in affecting the electrochemical performances of T-Nb$_2$O$_5$. By only manual shaking within one minute, Nb$_2$O$_5$ nano-particles can be rapidly adsorbed onto graphene, then the free-anchored T-Nb$_2$O$_5$@graphene three-dimensional networks (NG-3D) can be successfully prepared based on hydrogel method...
February 19, 2018: Nanotechnology
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