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https://www.readbyqxmd.com/read/28437601/maternal-hemodynamics-in-normal-pregnancies-reference-ranges-and-the-role-of-maternal-characteristics
#1
Dimuthu Vinayagam, Baskaran Thilaganathan, Oliver Stirrup, Elena Mantovani, Asma Khalil
OBJECTIVES: The main aim of this study was to construct reference ranges of the maternal central hemodynamic parameters during pregnancy. The second aim was to determine the maternal and pregnancy characteristics, which influence these hemodynamic parameters. METHODS: This was a prospective cohort study of low-risk pregnant women attending for routine antenatal care at St George's Hospital, London. The exclusion criteria included any medical disorder present at the time of study recruitment, or development of hypertension or intrauterine fetal growth restriction following study recruitment...
April 24, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28437197/pressure-irrigation-of-surgical-incisions-and-traumatic-wounds
#2
Donald E Fry
BACKGROUND: Pressure irrigation of surgical incisions and traumatic wounds is commonly used to prevent infections. Commercial pressure irrigation devices have proliferated rapidly, but scientific validation of clinical benefit or appropriate use remains uncertain. METHODS: The published experimental and clinical investigations of pressure irrigation have been reviewed since the introduction of the Waterpik device in 1967 to identify the evidence for use to prevent soft tissue infections associated with injury wounds or surgical incisions...
March 1, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28436711/mir-33b-5p-sensitizes-gastric-cancer-cells-to-chemotherapy-drugs-via-inhibiting-hmga2-expression
#3
Xiaoyan Yang, Qian Zhao, Huali Yin, Xiaoyong Lei, Runliang Gan
MicroRNAs (miRNAs) are internal, noncoding, and ∼22 nt small RNAs that display cell- and tissue-specific expression. They play important regulatory roles in cell proliferation and chemo-sensitivity. This study focused on tumor-suppressive miR-33b-5p expression as well as its role in gastric cancer. MiR-33b-5p was found low expression in gastric cancer cell lines. Functionally, western blots and the luciferase reporter assay were used to confirme that HMGA2 was the potential target of miR-33b-5p. Next, we used CCK-8 kits to analyze the effect of miR-33b-5p combined chemotherapy drugs on cell inhibition rate, and flow cytometry to analyze cells apoptosis...
April 24, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28436359/robotic-prostatectomy-versus-brachytherapy-for-the-treatment-of-low-risk-prostate-cancer
#4
Claudio Giberti, Fabrizio Gallo, Maurizio Schenone, Emilio Gastaldi, Pierluigi Cortese, Gaetano Ninotta, Davide Becco
INTRODUCTION: To compare oncological and functional results of robot-assisted radical prostatectomy (RARP) and brachytherapy (BT) with a single-center prospective randomized study. MATERIALS AND METHODS: From January 2012 to January 2014, 165 patients with low risk prostate cancer, prostate volume ≤ 50 g, normal urinary (IPSS ≤ 7 and mean flow rate ≥ 15 mL/sec) and erectile functions (IIEF-5 > 17) were enrolled and randomly assigned to the RARP or BT group...
April 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28436226/unleashing-the-power-and-energy-of-lifepo4-based-redox-flow-lithium-battery-with-a-bi-functional-redox-mediator
#5
Yun Guang Zhu, Yonghua Du, Chuankun Jia, Mingyue Zhou, Li Fan, Xingzhu Wang, Qing Wang
Redox flow batteries, despite great operation flexibility and scalability for large-scale energy storage, suffer from low energy density and relatively high cost as compared to the state-of-the-art Li-ion batteries. Here we report a redox flow lithium battery, which operates via the redox targeting reactions of LiFePO4 with a bi-functional redox mediator, 2,3,5,6-tetramethyl-p-phenylenediamine, and presents superb energy density as the Li-ion battery and system flexibility as the redox flow battery. The battery has achieved a tank energy density as high as 1023 Wh/L, power density of 61 mW/cm2, and voltage efficiency of 91%...
April 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28436218/the-ptr3-a-novel-instrument-for-studying-the-lifecycle-of-reactive-organic-carbon-in-the-atmosphere
#6
Martin Breitenlechner, Lukas Fischer, Markus Hainer, Martin Heinritzi, Joachim Curtius, Armin Hansel
We have developed and characterized the novel PTR3, a Proton Transfer Reaction Time-of-Flight mass spectrometer (PTR-ToF) using a new gas inlet and an innovative reaction chamber design. The reaction chamber consists of a tripole operated with RF voltages generating an electric field only in radial direction. An elevated electrical field is necessary to reduce clustering of primary hydronium (H3O(+)) and product ions with water molecules present in the sample gas. The axial movement of the ions is achieved by the sample gas flow only...
April 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28436075/does-a-meso-caval-shunt-have-positive-effects-in-a-pig-large-for-size-liver-transplantation-model
#7
Ana Cristina Aoun Tannuri, Daniel de Albuquerque Rangel Moreira, Alessandro Belon, Maria Cecília Mendonça Coelho, Josiane Oliveira Gonçalves, Suellen Serafini, Uenis Tannuri
In pediatric liver transplantations with LFS grafts, higher incidences of graft dysfunction probably occur due to IRI. It was postulated that increasing the blood supply to the graft by means of a meso-caval shunt could ameliorate the IRI. Eleven pigs underwent liver transplantation and were divided into two groups: LFS and LFS+SHUNT group. A series of flowmetric, metabolic, histologic, and molecular studies were performed. No significant metabolic differences were observed between the groups. One hour after reperfusion, portal flow was significantly lower in the recipients than in the donors, proving that the graft was maintained in low portal blood flow, although the shunt could promote a transient increase in the portal blood flow and a decrease in the arterial flow...
April 24, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28435954/electrostatically-stabilized-hybrids-of-carbon-and-maghemite-nanoparticles-electrochemical-study-and-application
#8
D Baratella, M Magro, P Jakubec, E Bonaiuto, J de Almeida Roger, E Gerotto, G Zoppellaro, J Tucek, K C Safarova, R Zbořil, A Cecconello, I Willner, S Santagata, P Sambo, F Vianello
Binary hybrids have been investigated for the past few decades due to the emerging properties of nanoparticle composites. Electrostatically stabilized core-shell nanostructures composed of surface active magnetic nanoparticles (SAMNs) and differently charged carbon nanomaterials display specific electrochemical properties. In this work, a set of binary hybrids that include a new class of magnetic nanoparticles is presented and the electrochemical features of the hybrids are reported. Gallic acid derived carbon dots (GA-CDs), PEG derived graphene dots (PEG-GDs), and quaternized carbon dots (Q-CDs) characterized by different charged groups were used for the preparation of different complexes with SAMNs...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28435324/symptomatic-central-nervous-system-involvement-in-adult-patients-with-acute-myeloid-leukemia
#9
Nael Alakel, Friedrich Stölzel, Brigitte Mohr, Michael Kramer, Uta Oelschlägel, Christoph Röllig, Martin Bornhäuser, Gerhard Ehninger, Markus Schaich
INTRODUCTION: Acute myeloid leukemia (AML) rarely involves the central nervous system (CNS). Little is known about the clinical course in adult AML patients since most studies examined pediatric patients. Therefore, this study analyzed the data of patients treated in three prospective trials of the "Study Alliance Leukemia" (SAL) study group for CNS involvement. METHODS: In all, 3,261 AML patients included in the prospective AML96, AML2003, and AML60+ trials of the SAL study group were analyzed...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28435186/a-low-power-thermal-based-sensor-system-for-low-air-flow-detection
#10
Akm Arifuzzman, Mohammad Rafiqul Haider, David B Allison
Being able to rapidly detect a low air flow rate with high accuracy is essential for various applications in the automotive and biomedical industries. We have developed a thermal-based low air flow sensor with a low-power sensor readout for biomedical applications. The thermal-based air flow sensor comprises a heater and three pairs of temperature sensors that sense temperature differences due to laminar air flow. The thermal-based flow sensor was designed and simulated by using laminar flow, heat transfer in solids and fluids physics in COMSOL MultiPhysics software...
November 2016: Analog Integrated Circuits and Signal Processing
https://www.readbyqxmd.com/read/28435148/plasma-mediated-protein-immobilisation-enhances-the-vascular-compatibility-of-polyurethane-with-tissue-matched-mechanical-properties
#11
Irina Kondyurina, Steven Wise, Alan Ngo, Elysse Filipe, Alexey Kondyurin, Anthony Weiss, Shisan Bao, Marcela Bilek
Polyurethanes are a diverse class of polymers, with independently tunable mechanical and biodegradation properties making them a versatile platform material for biomedical implants. Previous iterations have failed to adequately embody appropriate mechanical and biological properties, particularly for vascular medicine where strength, compliance and multifaceted biocompatibility are required. We have synthesized a new polyurethane formulation with finely tuned mechanical properties, combining high strength and extensibility with a low Young's modulus...
April 24, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28435056/interfacial-shear-rheology-of-%C3%AE-lactoglobulin-bovine-submaxillary-mucin-layers-adsorbed-at-air-water-interface
#12
Hilal Y Çelebioğlu, Joanna Kmiecik-Palczewska, Seunghwan Lee, Ioannis S Chronakis
The interfacial rheological properties of solutions of β-lactoglobulin (BLG), as a model food compound, mixed with bovine submaxillary mucin (BSM), a major salivary protein, have been investigated. Time, frequency, stress sweep and flow measurements have been performed at different pHs (7.4, 5.0 and 3.0), to investigate the air/water interfacial properties. All protein layers (BLG, BSM, and BLG-BSM mixtures) formed an elastic network at the air/water interface with low frequency dependence of the interfacial modulus...
April 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28434714/speed-resolution-advantage-of-turbulent-supercritical-fluid-chromatography-in-open-tubular-columns-ii-theoretical-and-experimental-evidences
#13
Fabrice Gritti, Michael Fogwill
The potential advantage of turbulent supercritical fluid chromatography (TSFC) in open tubular columns (OTC) was evaluated on both theoretical and practical viewpoints. First, the dispersion model derived by Golay in 1958 and recently extended from laminar to turbulent flow regime is used for the predictions of the speed-resolution performance in TSFC. The average dispersion coefficient of matter in the turbulent flow regime was taken from the available experimental data over a range of Reynolds number from 2000 to 6000...
April 19, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28434674/transcriptome-analysis-of-the-brain-of-the-sea-bream-sparus-aurata-after-exposure-to-human-pharmaceuticals-at-realistic-environmental-concentrations
#14
Miriam Hampel, Julian Blasco, Massimiliano Babbucci, Serena Ferraresso, Luca Bargelloni, Massimo Milan
Human pharmaceuticals such as Acetaminophen, Atenolol and Carbamazepine are pseudo persistent aquatic pollutants with yet unknown sub-lethal effects at environmentally relevant concentrations. Gilthead seabream (Sparus aurata) were exposed to Acetaminophen: 31.90 ± 11.07 μg L(-1); Atenolol: 0.95 ± 0.38 μg L(-1) and Carbamazepine: 6.95 ± 0.13 μg L(-1) in a 28 day flow through experiment to (1) determine whether exposure to low concentrations in the μg·L(-1) range of the pharmaceuticals alters the brain transcriptome and, (2) identify different expression profiles and treatment specific modes of action and pathways...
April 12, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28434643/assessment-of-cell-death-mechanisms-triggered-by-177-lu-anti-cd20-in-lymphoma-cells
#15
E Azorín-Vega, E Rojas-Calderón, B Martínez-Ventura, J Ramos-Bernal, L Serrano-Espinoza, N Jiménez-Mancilla, D Ordaz-Rosado, G Ferro-Flores
The aim of this research was to evaluate the cell cycle redistribution and activation of early and late apoptotic pathways in lymphoma cells after treatment with (177)Lu-anti-CD20. Experimental and computer models were used to calculate the radiation absorbed dose to cancer cell nuclei. The computer model (Monte Carlo, PENELOPE) consisted of twenty spheres representing cells with an inner sphere (cell nucleus) embedded in culture media. Radiation emissions of the radiopharmaceutical located in cell membranes and in culture media were considered for nuclei dose calculations...
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28434529/stochastic-multicomponent-reactive-transport-analysis-of-low-quality-drainage-release-from-waste-rock-piles-controls-of-the-spatial-distribution-of-acid-generating-and-neutralizing-minerals
#16
Daniele Pedretti, K Ulrich Mayer, Roger D Beckie
In mining environmental applications, it is important to assess water quality from waste rock piles (WRPs) and estimate the likelihood of acid rock drainage (ARD) over time. The mineralogical heterogeneity of WRPs is a source of uncertainty in this assessment, undermining the reliability of traditional bulk indicators used in the industry. We focused in this work on the bulk neutralizing potential ratio (NPR), which is defined as the ratio of the content of non-acid-generating minerals (typically reactive carbonates such as calcite) to the content of potentially acid-generating minerals (typically sulfides such as pyrite)...
April 12, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28434468/the-effect-of-chinese-herbal-medicine-banxia-baizhu-tianma-decoction-for-the-treatment-of-vertebrobasilar-insufficiency-vertigo-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#17
REVIEW
ZhenLang Guo, ZhenNing Su, ZhengFei Wang, XiaoMu Luo, RenKui Lai
OBJECTIVES: Banxia Baizhu Tianma Decoction (BBTD) is widely used to treat vertebrobasilar insufficiency vertigo (VBIV) in China, but its efficacy remains largely unexplored. We systemically summarized relevant evidence from randomized controlled trials (RCTs) to assess the therapeutic effect of BBTD. METHODS: Seven electronic databases were searched for relevant electronic studies published before July 2016. We evaluated RCTs that compared BBTD, anti-vertigo drugs and a combination of BBTD and anti-vertigo drugs...
April 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28433988/comparison-of-choriocapillaris-flow-measurements-between-two-optical-coherence-tomography-angiography-devices
#18
Jost L Lauermann, Peter Heiduschka, Pieter Nelis, Maximilian Treder, Maged Alnawaiseh, Christoph R Clemens, Nicole Eter, Florian Alten
PURPOSE: To evaluate choriocapillaris (CC) perfusion in healthy subjects using 2 different optical coherence tomography angiography (OCT-A) devices. PROCEDURES: Macular OCT-A imaging (36 eyes of 36 subjects) was performed using Optovue AngioVue and Zeiss AngioPlex devices. CC decorrelation signal index was assessed, and CC data were analyzed regarding intra-device variability, inter-device correlation, age, signal strength, and fields of view. RESULTS: The intra-device variability of CC measurements in the 3 × 3 mm2 field was 5...
April 22, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28433861/c-reactive-protein-and-enzymatically-modified-ldl-cooperatively-promote-dendritic-cell-mediated-t-cell-activation
#19
Wei He, Yong Ren, Xiao Wang, Qiao Chen, Shifang Ding
BACKGROUND: Enzymatically modified low density lipoprotein (eLDL), C reactive protein (CRP), dendritic cells (DCs), and T cells were shown to be involved in the pathogenesis of atherosclerosis. This study aimed to investigate whether eLDL and CRP could cooperatively promote DC-mediated T cell activation and proliferation. METHOD: Low density lipoprotein was isolated from healthy human plasma and treated with proteases and cholesterol esterase. CD14(+) monocytes were isolated from human peripheral blood by gradient centrifugation and enriched with CD14 Microbeads, which were then induced with recombinant human IL-4 and granulocyte-macrophage colony-stimulating factor before treated with eLDL and/or CRP...
April 7, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28433688/vitamin-d-downregulates-the-il-23-receptor-pathway-in-human-mucosal-ilc3
#20
Viktoria Konya, Paulo Czarnewski, Marianne Forkel, Anna Rao, Efthymia Kokkinou, Eduardo J Villablanca, Sven Almer, Ulrik Lindforss, Danielle Friberg, Charlotte Höög, Peter Bergman, Jenny Mjösberg
BACKGROUND: Vitamin D deficiency is a risk factor for inflammatory bowel disease (IBD). The IL-23-driven tissue-resident ILC3 play essential roles in intestinal immunity, and targeting IL-23/12 is a promising approach in IBD therapy. OBJECTIVE: We set out to define the role of 1α,25-dihydroxy vitamin D3 (1,25D) in regulating functional responses of human mucosal ILC3 to IL-23 plus IL-1β stimulation. METHODS: Transcriptomes of sorted tonsil ILC3 were assessed by microarray analysis...
April 19, 2017: Journal of Allergy and Clinical Immunology
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