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https://www.readbyqxmd.com/read/29142422/chemotaxonomic-diversity-of-three-ficus-species-their-discrimination-using-chemometric-analysis-and-their-role-in-combating-oxidative-stress
#1
Nawal Al-Musayeib, Sherif S Ebada, Haidy A Gad, Fadia S Youssef, Mohamed Lotfy Ashour
Background: Genus Ficus (Moraceae) constitutes more than 850 species and about 2000 varieties and it acts as a golden mine that could afford effective and safe remedies combating many health disorders. Objectives: Discrimination of Ficus cordata, Ficus ingens, and Ficus palmata using chemometric analysis and assessment of their role in combating oxidative stress. Materials and Methods: Phytochemical profiling of the methanol extracts of the three Ficus species and their successive fractions was performed using high-performance liquid chromatography/electrospray ionization mass spectrometry...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29128214/application-of-whey-protein-isolate-in-bone-regeneration-effects-on-growth-and-osteogenic-differentiation-of-bone-forming-cells
#2
Timothy E L Douglas, Marta Vandrovcová, Nikola Kročilová, Julia K Keppler, Jana Zárubová, Andre G Skirtach, Lucie Bačáková
Recently, milk-derived proteins have attracted attention for applications in the biomedical field such as tissue regeneration. Whey protein isolate (WPI), especially its main component β-lactoglobulin, can modulate immunity and acts as an antioxidant, antitumor, antiviral, and antibacterial agent. There are very few reports of the application of WPI in tissue engineering, especially in bone tissue engineering. In this study, we tested the influence of different concentrations of WPI on behavior of human osteoblast-like Saos-2 cells, human adipose tissue-derived stem cells (ASC), and human neonatal dermal fibroblasts (FIB)...
November 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29120866/surface-effects-on-exciton-diffusion-in-non-polar-zno-znmgo-heterostructures
#3
G Sakr, C Sartel, V Sallet, A Lusson, G Patriarche, P Galtier, J Barjon
The diffusion of excitons injected in ZnO/Zn0.92Mg0.08O quantum well heterostructures grown by metal-organic-vapor-phase-epitaxy on non-polar ZnO substrates is investigated at room temperature. Cathodoluminescence linescans in a field-emission-gun scanning-electron-microscope are performed across cleaved cross-sections. A 55 nm diffusion length is assessed for excitons in bulk ZnMgO. When prepared as small angle bevels using focused ion beam (FIB), the effective diffusion length of excitons is shown to decrease down to 8 nm in the thinner part of the slab...
November 9, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29116099/sensing-performances-of-pure-and-hybridized-carbon-nanotubes-zno-nanowire-networks-a-detailed-study
#4
Oleg Lupan, Fabian Schütt, Vasile Postica, Daria Smazna, Yogendra Kumar Mishra, Rainer Adelung
In this work, the influence of carbon nanotube (CNT) hybridization on ultraviolet (UV) and gas sensing properties of individual and networked ZnO nanowires (NWs) is investigated in detail. The CNT concentration was varied to achieve optimal conditions for the hybrid with improved sensing properties. In case of CNT decorated ZnO nanonetworks, the influence of relative humidity (RH) and applied bias voltage on the UV sensing properties was thoroughly studied. By rising the CNT content to about 2.0 wt% (with respect to the entire ZnO network) the UV sensing response is considerably increased from 150 to 7300 (about 50 times)...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29115339/electro-oxidation-of-a-cobalt-based-steel-in-lioh-a-non-noble-metal-based-electro-catalyst-suitable-for-durable-water-splitting-in-an-acidic-milieu
#5
Helmut Schäfer, Karsten Küpper, Klaus Müller-Buschbaum, Diemo Daum, Martin Steinhart, Joachim Wollschläger, Ulrich Krupp, Mercedes Schmidt, Weijia Han, Johannes Stangl
The use of proton exchange membrane (PEM) electrolyzers is the method of choice for the conversion of solar energy when frequently occurring changes of the current load are an issue. However, this technique requires electrolytes with low pH. All oxygen evolving electrodes working durably and actively in acids contain IrOx. Due to their scarcity and high acquisition costs, noble elements like Pt, Ru and Ir need to be replaced by earth abundant elements. We have evaluated a cobalt containing steel for use as an oxygen-forming electrode in H2SO4...
November 8, 2017: Nanoscale
https://www.readbyqxmd.com/read/29113395/association-between-fibrinogen-level-and-the-severity-of-coronary-stenosis-in-418-male-patients-with-myocardial-infarction-younger-than-35-years-old
#6
Xiong-Yi Gao, Bing-Yang Zhou, Min-Zhou Zhang, Xi Zhao, Ping Qing, Cheng-Gang Zhu, Na-Qiong Wu, Yuan-Lin Guo, Ying Gao, Xiao-Lin Li, Yao Wang, Geng Liu, Qian Dong, Li-Heng Guo, Jian-Jun Li
Fibrinogen (Fib) is a useful marker for predicting the severity of coronary artery disease (CAD) in adult population. However, whether Fib can be a predictor for the presence and severity of CAD in very young MI patients (≤35 years old) remains to be determined. A total of 418 males from 61,863 patients with MI who were under 35 years old were sequentially recruited in our study. The patients were divided into two main groups and three subgroups according to coronary angiograph and Gensini score (GS) system: no coronary artery stenosis (group A), the results of the coronary artery stenosis (group B); low GS, intermediate GS and high GS...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29111678/bipolar-electrochemistry-on-a-nanopore-supported-platinum-nanoparticle-electrode
#7
Rui Hao, Yunshan Fan, Chu Han, Bo Zhang
In this Technical Note, we describe a method to fabricate nanopore-supported Pt nanoparticle electrodes and their use in bipolar electrochemistry. A Pt nanoparticle is deposited on the orifice of a solid-state nanopore inside a focused-ion beam (FIB) system. Complete blockage of the nanopore with Pt metal forms a closed bipolar nanoparticle electrode whose size and shape can be tunable in one simple step. Nanoparticle electrodes and their arrays can be prepared on different substrates such as the tip of a glass pipet, a double-barrel pipet, and a freestanding silicon nitride membrane...
November 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29104085/disruption-of-adherens-junction-and-alterations-in-yap-related-proliferation-behavior-as-part-of-the-underlying-cell-transformation-process-of-alcohol-induced-oral-carcinogenesis
#8
Ayman Husari, Diana Hülter-Hassler, Thorsten Steinberg, Simon Daniel Schulz, Pascal Tomakidi
Accumulating evidences indicate that alcohol might play a causative in oral cancer. Unfortunately, in vitro cell systems, uncovering the molecular background of the underlying cell transformation process, are rare. Therefore, this study was conducted, to identify molecular changes and characterize their putative cell behavioral consequences in epitheloid (EPI) and fibroblastoid (FIB) oral keratinocyte phenotypes, arising from chronical alcohol treatment. Concerning adherens junctions (AJs), both EPI and FIB showed membrane-bound β-catenin, but exhibited differences for E-cadherin and zyxin...
November 2, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29097288/trend-over-time-in-hepatic-fibrosis-score-in-a-cohort-of-type-2-diabetes-patients
#9
Carlo Bruno Giorda, Gabriele Forlani, Roberta Manti, Arianna Mazzotti, Salvatore De Cosmo, Maria Chiara Rossi, Antonio Nicolucci, Paolo Di Bartolo, Antonio Ceriello, Pietro Guida, Barbara Tartaglino, Giuseppina Russo
AIMS: The prevalence and progression of hepatic fibrosis and its correlated factors in type 2 diabetes (T2DM) are poorly known. We aimed to define the percentage of T2DM patients who progress to fibrosis and the factors associated with disease progression. METHODS: Data from the electronic health records of 1527 patients with diagnosed T2DM and nonalcoholic fatty liver disease (NAFLD), as diagnosed by the Fatty Liver Index, were extracted from the AMD Annals database, which collects data from the Italian network of diabetes clinics...
October 30, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29096394/si-amorphization-by-focused-ion-beam-milling-point-defect-model-with-dynamic-bca-simulation-and-experimental-validation
#10
J Huang, M Loeffler, U Muehle, W Moeller, J J L Mulders, L F Tz Kwakman, W F Van Dorp, E Zschech
A Ga focused ion beam (FIB) is often used in transmission electron microscopy (TEM) analysis sample preparation. In case of a crystalline Si sample, an amorphous near-surface layer is formed by the FIB process. In order to optimize the FIB recipe by minimizing the amorphization, it is important to predict the amorphous layer thickness from simulation. Molecular Dynamics (MD) simulation has been used to describe the amorphization, however, it is limited by computational power for a realistic FIB process simulation...
October 25, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/29096392/material-interface-detection-based-on-secondary-electron-images-for-focused-ion-beam-machining
#11
Hang-Eun Joe, Won-Sup Lee, Martin B G Jun, No-Cheol Park, Byung-Kwon Min
A method for interface detection is proposed for focused ion beam (FIB) processes of multilayered targets. As multilayers have emerged as promising structures for nanodevices, the FIB machining of multilayers has become a challenging issue. We proposed material interface detection by monitoring secondary electron (SE) images captured during the FIB process. The average of the gray-levels and the skewness coefficient of gray-level histograms of the SE images were evaluated to recognize endpoints for the FIB processes...
October 20, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/29096249/an-improved-fib-sample-preparation-technique-for-site-specific-plan-view-specimens-a-new-cutting-geometry
#12
Chen Li, Gerlinde Habler, Lisa C Baldwin, Rainer Abart
Focused ion beam (FIB) sample preparation technique in plan-view geometry allows direct correlations of the atomic structure study via transmission electron microscopy with micrometer-scale property measurements. However, one main technical difficulty is that a large amount of material must be removed underneath the specimen. Furthermore, directly monitoring the milling process is difficult unless very large material volumes surrounding the TEM specimen site are removed. In this paper, a new cutting geometry is introduced for FIB lift-out sample preparation with plan-view geometry...
September 28, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/29094442/prevalence-and-severity-of-non-alcoholic-fatty-liver-disease-are-underestimated-in-clinical-practice-impact-of-a-dedicated-screening-approach-at-a-large-university-teaching-hospital
#13
T Marjot, E Sbardella, A Moolla, J Hazlehurst, G D Tan, M Ainsworth, J F L Cobbold, J W Tomlinson
AIMS: To define the attitudes and current clinical practice of diabetes specialists with regard to non-alcoholic fatty liver disease and, based on the results, implement an evidenced-based pathway for non-alcoholic fatty liver disease assessment. METHODS: An online survey was disseminated to diabetes specialists. Based on findings from this survey, we sought a local solution by launching an awareness campaign and implementing a screening algorithm across all diabetes clinics at a secondary/tertiary referral centre...
November 2, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29091092/three-dimensional-morphometry-of-collagen-fibrils-in-membranous-bone
#14
Mana Hashimoto, Noriyuki Nagaoka, Kaori Tabata, Tomoyo Tanaka, Ryuta Osumi, Naoya Odagaki, Toru Hara, Hiroshi Kamioka
The collagen network acts as a scaffold for calcification and its three-dimensional structure influences bone strength. It is therefore important to observe the collagen network in detail and three-dimensionally. In this study, we observed the collagen network of chick embryonic calvariae in membranous bone three-dimensionally using orthogonally arranged FIB-SEM. A 25 × 25 μm area of chick embryonic calvaria was observed at a high resolution (25 nm per pixel). The inside of the bone (i.e. the primary calcified tissue), the bone cells (i...
November 13, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/29083144/enhanced-cell-chip-coupling-by-rapid-femtosecond-laser-patterning-of-soft-pedot-pss-biointerfaces
#15
Francesca Santoro, Yoeri van de Burgt, Scott Tom Keene, Bianxiao Cui, Alberto Salleo
Interfacing soft materials with biological systems holds considerable promise for both biosensors and recording live cells. However, the interface between cells and organic substrates is not well studied, despite its crucial role in the effectiveness of the device. Furthermore, well-known cell adhesion enhancers, such as microgrooves, have not been implemented on these surfaces. Here, we present a nanoscale characterization of the cell-substrate interface for 3D laser-patterned organic electrodes by combining electrochemical impedance spectroscopy (EIS) and scanning electron microscopy/focused ion beam (SEM/FIB)...
November 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29083080/underappreciation-of-non-alcoholic-fatty-liver-disease-by-primary-care-clinicians-limited-awareness-of-surrogate-markers-of-fibrosis
#16
Preya J Patel, Xuan Banh, Leigh U Horsfall, Kelly L Hayward, Fabrina Hossain, Tracey Johnson, Katherine A Stuart, Nigel N Brown, Nivene Saad, Andrew Clouston, Katharine M Irvine, Anthony W Russell, Patricia C Valery, Suzanne Williams, Elizabeth E Powell
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is a common cause of incidental liver test abnormalities. General practitioners have a key role in identifying people with NAFLD at risk of significant liver disease. Recent specialist guidelines emphasize the use of fibrosis algorithms or serum biomarkers rather than routine liver tests, to assess advanced fibrosis. This study evaluated primary care clinicians' current approach to diagnosis, management and referral of NAFLD. METHODS: A cross-sectional survey of primary care clinicians was undertaken through a structured questionnaire about NAFLD...
October 30, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/29082644/assessment-of-serum-golgi-protein-73-as-a-biomarker-for-the-diagnosis-of-significant-fibrosis-in-patients-with-chronic-hbv-infection
#17
Z Cao, Z Li, Y Wang, Y Liu, R Mo, P Ren, L Chen, J Lu, H Li, Y Zhuang, Y Liu, X Wang, G Zhao, W Tang, X Xiang, H Wang, W Cai, L Liu, C Zhu, S Bao, Q Xie
Transient elastography (TE) is accurate in staging fibrosis noninvasively. However, a reliable serum biomarker with comparable accuracy is also important, especially when TE is unreliable/unavailable. Therefore, we aimed to evaluate the diagnostic performance of serum Golgi protein 73 (GP73) for significant fibrosis in patients with chronic HBV infection. A total of 801 patients with chronic liver disease (CLD; 492 chronic HBV infection and 309 non-HBV liver disease) with liver biopsy performance were enrolled...
November 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/29078105/quantitative-haadf-stem-of-sige-in-presence-of-amorphous-surface-layers-from-fib-preparation
#18
Tim Grieb, Moritz Tewes, Marco Schowalter, Knut Müller-Caspary, Florian F Krause, Thorsten Mehrtens, Jean-Michel Hartmann, Andreas Rosenauer
The chemical composition of four Si1-xGex layers grown on silicon was determined from quantitative scanning transmission electron microscopy (STEM). The chemical analysis was performed by a comparison of the high-angle annular dark field (HAADF) intensity with multislice simulations. It could be shown that amorphous surface layers originating from the preparation process by focused-ion beam (FIB) at 30 kV have a strong influence on the quantification: the local specimen thickness is overestimated by approximately a factor of two, and the germanium concentration is substantially underestimated...
October 13, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/29077674/macrophage-activation-and-the-tumor-necrosis-factor-cascade-in-hepatitis-c-disease-progression-among-hiv-infected-women-participating-in-the-women-s-interagency-hiv-study
#19
Audrey L French, Jonathan W Martin, Charlesnika T Evans, Marion Peters, Seble G Kessaye, Marek Nowicki, Mark Kuniholm, Elizabeth Golub, Michael Augenbraun, Seema N Desai
BACKGROUND: HIV/hepatitis C-coinfected persons experience more rapid liver disease progression than hepatitis C virus (HCV) monoinfected persons, even in the setting of potent antiretroviral therapy. METHODS: We sought to articulate the role of macrophage activation and inflammation in liver disease progression by measuring serial soluble markers in HIV/HCV-coinfected women. We compared markers measured during retrospectively defined periods of rapid liver disease progression to periods where little or no liver disease progression occurred...
December 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29069995/pro-c3-a-new-and-more-precise-collagen-marker-for-liver-fibrosis-in-patients-with-chronic-hepatitis-c
#20
Janne Fuglsang Hansen, Mette Juul Nielsen, Kristina Nyström, Diana Julie Leeming, Martin Lagging, Gunnar Norkrans, Peer Brehm Christensen, Morten Karsdal
OBJECTIVE: Detecting significant fibrosis and cirrhosis remains important in treatment and follow-up of patients with chronic hepatitis C Infection (CHC). The aim of this study was to assess the ability of PRO-C3 to identify significant fibrosis (Ishak score ≥3) and cirrhosis (Ishak score ≥5) both as a single test and as a part of algorithms. MATERIALS AND METHODS: PRO-C3 was assessed in baseline samples from the NORDynamIC trial. 270 patients were stratified into groups according to baseline biopsy...
October 25, 2017: Scandinavian Journal of Gastroenterology
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