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https://www.readbyqxmd.com/read/29457448/au-znse-based-surface-enhanced-infrared-absorption-spectroscopy-as-a-universal-platform-for-bioanalysis
#1
Wen-Jing Bao, Jian Li, Jin Li, Qian-Wen Zhang, Yang Liu, Cai-Feng Shi, Xing-Hua Xia
A versatile and sensitive platform for label-free bioanalysis has been proposed based on attenuated total reflection-surface enhanced infrared absorption spectroscopy (ATR-SEIRAS) using Au/ZnSe as the enhancement substrate that allows wide spectral range down to 700 cm-1. Au nanoparticles are stably deposited on the surface of ZnSe prism due to the formation of Au-Se bond via electroless deposition, and the enhancement factor of the resultant Au/ZnSe substrate is about two times larger than that of the commonly used Au/Si substrate...
February 19, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29450486/differentiating-acute-and-subacute-vertical-strabismus-using-different-head-positions-during-the-upright-supine-test
#2
João Lemos, Adnan Subei, Mário Sousa, César Nunes, Luís Cunha, Christopher Glisson, Eric Eggenberger
Importance: Accurate clinical differentiation between skew deviation and fourth nerve palsy (4NP) is critical in the acute and subacute settings. Objective: To determine the sensitivity and specificity of the upright-supine test to detect vertical misalignment changes using different head positions for the diagnosis of acute or subacute skew deviation vs 4NP. Design, Setting, and Participants: This multicenter study enrolled consecutive patients from Coimbra University Hospital Centre, Coimbra, Portugal, and Michigan State University, Lansing, within 2 months of presenting with vertical diplopia and diagnosed as having skew deviation or acquired unilateral 4NP...
February 15, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29446945/a-statistical-model-to-decipher-protein-folding-unfolding-at-a-local-scale
#3
Paul Grassein, Patrice Delarue, Harold Abraham Scheraga, Gia G Maisuradze, Patrick Senet
Protein folding/unfolding can be analysed experimentally at a local scale by monitoring the physical properties of local probes as a function of the temperature, as for example the distance between fluorophores or the values of chemical shifts of backbone atoms. Here, the analytical Lifson-Roig model for the helix-coil transition is modified to analyse local thermal unfolding of the fast-folder W protein of bacteriophage lambda (gpW) simulated by all-atom molecular dynamics (MD) simulations in explicit solvent at fifteen different temperatures...
February 15, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29446725/mapping-of-protein-protein-interactions-web-based-resources-for-revealing-interactomes
#4
Branislava Gemovic, Neven Sumonja, Radoslav Davidovic, Vladimir Perovic, Nevena Veljkovic
BACKGROUND: The significant number of protein-protein interactions (PPIs) discovered by harnessing concomitant advances in the fields of sequencing, crystallography, spectrometry and two-hybrid screening suggests astonishing prospects for remodelling drug discovery. The PPI space which includes up to 650 000 entities is a remarkable reservoir of potential therapeutic targets for every human disease. In order to allow modern drug discovery programs to leverage this we should be able to discern complete PPI maps associated with a specific disorder and corresponding normal physiology...
February 13, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29445141/continuous-depth-profile-of-the-rock-strength-in-the-nankai-accretionary-prism-based-on-drilling-performance-parameters
#5
Yohei Hamada, Manami Kitamura, Yasuhiro Yamada, Yoshinori Sanada, Takamitsu Sugihara, Saneatsu Saito, Kyaw Moe, Takehiro Hirose
A new method for evaluating the in situ rock strength beneath the seafloor is proposed and applied to the Nankai Trough accretionary prism. The depth-continuous in situ rock strength is a critical parameter for numerous studies in earth science, particularly for seismology and tectonics at plate convergence zones; yet, measurements are limited owing to a lack of drilled cores. Here, we propose a new indicator of strength, the equivalent strength (EST), which is determined only by drilling performance parameters such as drill string rotational torque, bit depth, and string rotational speed...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29444106/prevalence-and-risk-factors-of-strabismus-in-children-and-adolescents-in-south-korea-korea-national-health-and-nutrition-examination-survey-2008-2011
#6
Kyung Eun Han, Seung-Hee Baek, Seung-Hyun Kim, Key Hwan Lim
PURPOSE: To evaluate the prevalence and risk factors associated with horizontal strabismus in children and adolescents in South Korea. METHODS: A total of 5,935 children and adolescents 5-18 years of age who participated in the fourth and fifth Korean National Health and Nutrition Examination Survey (KNHANES IV-V) from July 2008 to December 2011 were evaluated and the prevalence of horizontal strabismus was estimated. Univariate and multivariate logistic regression analyses were conducted to determine the association between demographic, socioeconomic and clinical risk factors and clinically significant exodeviation (≥15 prism diopters [PD]) and esodeviation (≥10 PD)...
2018: PloS One
https://www.readbyqxmd.com/read/29442935/controlled-hydrothermal-synthesis-optical-and-magnetic-properties-of-monodisperse-leaf-like-ceo%C3%A2-nanosheets
#7
Xiaofei Niu, Xiuxiang Zhang, Yan Liu
The monodisperse leaf-like CeO2 nanosheets of about 40 nm in thickness have been successfully synthesized by a simple hydrothermal route. SEM, XRD, FT-IR, TG-DSC, XPS, Raman scattering, Photoluminescence (PL) spectra and M-H curves were employed to characterize the samples. The results showed that all the CeO2 samples had a cubic fluorite structure and there are Ce3+ ions and oxygen vacancies in the surface of samples. Based on the SEM patterns, a clear morphology transformation from leaf-like to heart-shaped, and then to triangular prism-like structure was observed...
April 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29439683/elevated-central-venous-pressure-is-associated-with-increased-mortality-in-pediatric-septic-shock-patients
#8
Seung Jun Choi, Eun-Ju Ha, Won Kyoung Jhang, Seong Jong Park
BACKGROUND: Central venous pressure (CVP) is an important factor affecting capillary blood flow, and it is associated with poor outcomes in adult septic shock patients. However, whether a similar association exists in pediatric patients remains unclear. METHODS: We retrospectively analyzed data from patients admitted to our pediatric intensive care unit (PICU) between February 2009 and July 2015. Patients were divided into two groups-survivors and nonsurvivors-according to 28-day mortality...
February 13, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29432487/structural-basis-of-mammalian-glycan-targeting-by-vibrio-cholerae-cytolysin-and-biofilm-proteins
#9
Swastik De, Katherine Kaus, Shada Sinclair, Brandon C Case, Rich Olson
Vibrio cholerae is an aquatic gram-negative microbe responsible for cholera, a pandemic disease causing life-threatening diarrheal outbreaks in populations with limited access to health care. Like most pathogenic bacteria, V. cholerae secretes virulence factors to assist colonization of human hosts, several of which bind carbohydrate receptors found on cell-surfaces. Understanding how pathogenic virulence proteins specifically target host cells is important for the development of treatment strategies to fight bacterial infections...
February 12, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29429457/-association-between-vasoactive-inotropic-score-and-prognosis-in-children-with-septic-shock
#10
Yan-Ran Qin, Cheng-Jun Liu, Feng Xu, Jing Li, Xiao-Yu Xiong
OBJECTIVE: To investigate the association between vasoactive-inotropic score (VIS) and prognosis in children with septic shock. METHODS: A total of 117 children with decompensated septic shock who received the treatment with vasoactive agents were enrolled. According to their prognosis, they were divided into death group with 41 children and survival group with 76 children. With the maximum VIS within the first 24 hours (24hVIS max) as the cut-off value (29.5), the children were divided into low VIS group with 78 children and high VIS group with 39 children...
February 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29426906/alps-to-apennines-zircon-roller-coaster-along-the-adria-microplate-margin
#11
J Jacobs, G Paoli, S Rocchi, A K Ksienzyk, H Sirevaag, M A Elburg
We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, 41-30 Ma, with a main age peak at ca. 32 Ma, indicating an unexpected early Oligocene maximum deposition age. These Oligocene ages with negative εHf indicate a volcanic source region in the central-southern Alps. Though young by geological means, these zircons record an extraordinary geodynamic history...
February 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29425166/fast-focal-point-correction-in-prism-coupled-total-internal-reflection-scanning-imager-using-an-electronically-tunable-lens
#12
Chenggang Zhu, Bilin Ge, Ru Chen, Xiangdong Zhu, Lan Mi, Jiong Ma, Xu Wang, Fengyun Zheng, Yiyan Fei
Total internal reflection (TIR) is useful for interrogating physical and chemical processes that occur at the interface between two transparent media. Yet prism-coupled TIR imaging microscopes suffer from limited sensing areas due to the fact that the interface (the object plane) is not perpendicular to the optical axis of the microscope. In this paper, we show that an electrically tunable lens can be used to rapidly and reproducibly correct the focal length of an oblique-incidence scanning microscope (OI-RD) in a prism-coupled TIR geometry...
February 9, 2018: Sensors
https://www.readbyqxmd.com/read/29424915/circulating-mir-379-as-a-potential-novel-biomarker-for-diagnosis-of-acute-myocardial-infarction
#13
J Yi, Y An
OBJECTIVE: Previous studies have demonstrated that microRNA-379 (miR-379) was involved in regulating cell proliferation. The present study aimed to investigate its potential role in the diagnosis of cute myocardium infarction (AMI). PATIENTS AND METHODS: Plasma samples from 30 patients with AMI and 30 healthy adults (non-AMI controls) were collected. The abundance of circulating miR-379 was determined using quantitative Real-time PCR (qRT-PCR). Receiver-operator characteristic (ROC) analyses were performed by GraphPad Prism 5...
January 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29421882/water-adsorbate-phases-on-zno-and-impact-of-vapor-pressure-on-the-equilibrium-shape-of-nanoparticles
#14
Stephane Kenmoe, P Ulrich Biedermann
ZnO nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion. A fundamental understanding of the exposed crystal facets, their surface chemistry, and stability as a function of environmental conditions is essential for rational design and improvement of synthesis and properties. We study the stability of water adsorbate phases on the non-polar low-index (101¯0) and (112¯0) surfaces from low coverage to multilayers using ab initio thermodynamics. We show that phonon contributions and the entropies due to a 2D lattice gas at low coverage and multiple adsorbate configurations at higher coverage have an important impact on the stability range of water adsorbate phases in the (T,p) phase diagram...
February 7, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29420325/variation-of-coma-aberration-with-prismatic-soft-contact-lenses
#15
Carlos Carpena-Torres, José Manuel López-Alonso, Mercedes Burgos-Martínez, Gonzalo Carracedo, Jesús Carballo-Álvarez
PURPOSE: To analyze the variation in vertical coma and the rest of ocular aberrations before and after fitting prismatic soft contact lenses (PSCL). METHODS: Thirty-seven eyes of 20 healthy subjects (24.30±2.03 years) were evaluated to analyze the variation in ocular wavefront aberrations before and after fitting PSCL of different base-down prism values (1.0, 1.5, and 2.0 prism diopters [PD]), designed to study its influence in the compensation of vertical coma aberration...
February 7, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29417973/boron-phil-and-boron-phob-structure-units-in-novel-borides-ni3zn2b-and-ni2znb-experiment-and-first-principles-calculations
#16
F Failamani, R Podloucky, J Bursik, G Rogl, H Michor, H Müller, E Bauer, G Giester, P Rogl
The crystal structures of two novel borides in the Ni-Zn-B system, τ5-Ni3Zn2B and τ6-Ni2ZnB, were determined by single crystal X-ray diffraction (XRSC) in combination with selected area electron diffraction in a transmission electron microscope (SAED-TEM) and electron probe microanalysis (EPMA). Both compounds crystallize in unique structure types (space group C2/m, a = 1.68942(8) nm, b = 0.26332(1) nm, c = 0.61904(3) nm, β = 111.164(2)°, RF = 0.0219 for Ni3Zn2B, and space group C2/m, a = 0.95296(7) nm, b = 0...
February 8, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29415771/bibliometric-analysis-of-global-scientific-activity-on-umbilical-cord-mesenchymal-stem-cells-a-swiftly-expanding-and-shifting-focus
#17
REVIEW
Jian Zhao, Guanyu Yu, Mengxi Cai, Xiao Lei, Yanyong Yang, Qijin Wang, Xiao Zhai
Several studies have focused on umbilical cord-derived mesenchymal stem cells (UC-MSCs) due to their potential therapeutic effects in a cluster of diseases. However, there has been no bibliometric analysis evaluating the evolution in UC-MSC research. Therefore, this study aimed to assess scientific activity regarding UC-MSC research. Publications on UC-MSCs were retrieved from the Science Citation Index-Expanded (SCI-E) of the Web of Science (WoS) from 1975 to 2017. Statistical analyses were performed using Excel, GraphPad Prism 5, and VOSviewer software...
February 7, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29412849/evaluating-cognitive-reserve-through-the-prism-of-preclinical-alzheimer-disease
#18
REVIEW
Anja Soldan, Corinne Pettigrew, Marilyn Albert
The concept of cognitive reserve (CR) was proposed to account for the discrepancy between levels of brain pathologic features or damage and clinical and cognitive function. This article provides a detailed review of prospective longitudinal studies that have investigated the interaction between CR and Alzheimer's disease (AD) biomarkers on clinical and cognitive outcomes among individuals with preclinical AD. Current evidence shows that higher levels of CR are associated with a delay in the onset of symptoms of mild cognitive impairment and that there may be multiple pathways by which CR exerts its protective effects...
March 2018: Psychiatric Clinics of North America
https://www.readbyqxmd.com/read/29404689/hyperchloremia-is-independently-associated-with-mortality-in-critically-ill-children-who-ultimately-require-continuous-renal-replacement-therapy
#19
Matthew F Barhight, Jennifer Lusk, John Brinton, Timothy Stidham, Danielle E Soranno, Sarah Faubel, Jens Goebel, Peter M Mourani, Katja M Gist
BACKGROUND: The optimal fluid management in critically ill children is currently under investigation with several studies suggesting that hyperchloremia, chloride load, and the use of chloride-rich fluids contribute to worse outcomes. METHODS: This is a single-center retrospective cohort study of Pediatric Intensive Care Unit patients from 2008 to 2016 requiring continuous renal replacement therapy (CRRT). Patients were excluded if they had end-stage renal disease, a disorder of chloride transport, or concurrent provision of extracorporeal membrane oxygenation therapy...
February 5, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29404425/gut-microbiota-offers-universal-biomarkers-across-ethnicity-in-inflammatory-bowel-disease-diagnosis-and-infliximab-response-prediction
#20
Youlian Zhou, Zhenjiang Zech Xu, Yan He, Yunsheng Yang, Le Liu, Qianyun Lin, Yuqiang Nie, Mingsong Li, Fachao Zhi, Side Liu, Amnon Amir, Antonio González, Anupriya Tripathi, Minhu Chen, Gary D Wu, Rob Knight, Hongwei Zhou, Ye Chen
Gut microbiota dysbiosis contributes to the onset and perpetuation of inflammatory bowel disease (IBD). Given that gut microbiotas vary across geography and ethnicity, it remains obscure whether any universal microbial signatures for IBD diagnosis and prognosis evaluation exist irrespective of populations. Here we profiled the fecal microbiota of a series of Chinese IBD patients and combined them with two Western IBD cohorts, PRISM and RISK, for meta-analyses. We found that the gut microbial alteration patterns in IBD are similar among Chinese and Westerners...
January 2018: MSystems
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