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https://www.readbyqxmd.com/read/28816728/lipid-deposition-on-contact-lenses-when-using-contemporary-care-solutions
#1
Negar Babaei Omali, Mark Lada, Carol Lakkis, Philip B Morgan, Jason J Nichols, Lakshman N Subbaraman, Lyndon W Jones
SIGNIFICANCE: There remains only a small amount of data from human studies demonstrating the effect of contact lens/lens care solution combinations on the deposition of lipids. Therefore, information on the degree to which modern materials deposit lipids when used with contemporary care solutions would be valuable. PURPOSE: The present study aims to determine the effect of lens care system combinations on levels of total lipid, cholesterol, and cholesteryl esters extracted from three different contact lenses (CLs) when used with four contemporary care systems...
August 16, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28813492/point-prevalence-survey-of-healthcare-facility-onset-healthcare-associated-clostridium-difficile-infection-in-greek-hospitals-outside-the-intensive-care-unit-the-c-define-study
#2
Athanasios Skoutelis, Angelos Pefanis, Sotirios Tsiodras, Nikolaos V Sipsas, Moyssis Lelekis, Marios C Lazanas, Panagiotis Gargalianos, George N Dalekos, Emmanuel Roilides, George Samonis, Efstratios Maltezos, Dimitrios Hatzigeorgiou, Malvina Lada, Symeon Metallidis, Athena Stoupis, Georgios Chrysos, Lazaros Karnesis, Styliani Symbardi, Chariclia V Loupa, Helen Giamarellou, Ioannis Kioumis, Helen Sambatakou, Epameinondas Tsianos, Maria Kotsopoulou, Areti Georgopali, Klairi Liakou, Stavroula Perlorentzou, Stamatina Levidiotou, Marina Giotsa-Toutouza, Helen Tsorlini-Christoforidou, Ilias Karaiskos, Georgia Kouppari, Eleftheria Trikka-Graphakos, Maria-Anna Ntrivala, Kate Themeli-Digalaki, Anastasia Pangalis, Melina Kachrimanidou, Maria Martsoukou, Stergios Karapsias, Maria Panopoulou, Sofia Maraki, Anagnostina Orfanou, Efthymia Petinaki, Maria Orfanidou, Vasiliki Baka, Antonios Stylianakis, Iris Spiliopoulou, Stavroula Smilakou, Loukia Zerva, Evangelos Vogiatzakis, Eleni Belesiotou, Charalambos A Gogos
BACKGROUND: The correlation of Clostridium difficile infection (CDI) with in-hospital morbidity is important in hospital settings where broad-spectrum antimicrobial agents are routinely used, such as in Greece. The C. DEFINE study aimed to assess point-prevalence of CDI in Greece during two study periods in 2013. METHODS: There were two study periods consisting of a single day in March and another in October 2013. Stool samples from all patients hospitalized outside the ICU aged ≥18 years old with diarrhea on each day in 21 and 25 hospitals, respectively, were tested for CDI...
2017: PloS One
https://www.readbyqxmd.com/read/28808034/feedback-amplification-loop-drives-malignant-growth-in-epithelial-tissues
#3
Mariana Muzzopappa, Lada Murcia, Marco Milán
Interactions between cells bearing oncogenic mutations and the surrounding microenvironment, and cooperation between clonally distinct cell populations, can contribute to the growth and malignancy of epithelial tumors. The genetic techniques available in Drosophila have contributed to identify important roles of the TNF-α ligand Eiger and mitogenic molecules in mediating these interactions during the early steps of tumor formation. Here we unravel the existence of a tumor-intrinsic-and microenvironment-independent-self-reinforcement mechanism that drives tumor initiation and growth in an Eiger-independent manner...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28795821/fast-hole-tunneling-times-in-germanium-hut-wires-probed-by-single-shot-reflectometry
#4
Lada Vukušić, Josip Kukučka, Hannes Watzinger, Georgios Katsaros
Heavy holes confined in quantum dots are predicted to be promising candidates for the realization of spin qubits with long coherence times. Here we focus on such heavy-hole states confined in Germanium hut wires. By tuning the growth density of the latter we can realize a T-like structure between two neighboring wires. Such a structure allows the realization of a charge sensor, which is electrostatically and tunnel coupled to a quantum dot, with charge-transfer signals as high as 0.3 e. By integrating the T-like structure into a radio-frequency reflectometry setup, single-shot measurements allowing the extraction of hole tunneling times are performed...
August 10, 2017: Nano Letters
https://www.readbyqxmd.com/read/28783541/increasing-frequency-of-non-smoking-lung-cancer-presentation-of-patients-with-early-disease-to-a-tertiary-institution-in-the-uk
#5
Maria Elena Cufari, Chiara Proli, Paulo De Sousa, Hilgardt Raubenheimer, May Al Sahaf, Hema Chavan, Lynn Shedden, Zakiyah Niwaz, Maria Leung, Andrew G Nicholson, Vladimir Anikin, Emma Beddow, Niall McGonigle, Michael E Dusmet, Simon Jordan, George Ladas, Eric Lim
BACKGROUND: Never-smokers with lung cancer often present late as there are no established aetiological risk factors. The aim of the study is to define the frequency over time and characterise clinical features of never-smokers presenting sufficiently early to determine if it is possible to identify patients at risk. METHODS: We retrospectively analysed data from a prospectively collected database of patients who underwent surgery. The frequency was defined as number of never-smokers versus current and ex-smokers by year...
August 3, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28761648/education-immigration-and-income-as-risk-factors-for-hemoglobin-a1c-70-mmol-mol-when-diagnosed-with-type-2-diabetes-or-latent-autoimmune-diabetes-in-adult-a-population-based-cohort-study
#6
Mats Martinell, Ronnie Pingel, Johan Hallqvist, Mozhgan Dorkhan, Leif Groop, Anders Rosengren, Petter Storm, Jan Stålhammar
OBJECTIVES: The aim of this research is to study education, income and immigration as risk factors for high hemoglobin A1c (HbA1c >70 mmol/mol (8.6%)) when diagnosed with type 2 diabetes (T2D) or latent autoimmune diabetes in the adult (LADA). RESEARCH DESIGN AND METHODS: Patients were included from the All New Diabetics in Scania study (2008-2013). Level of education, disposable income and immigration year were retrieved from the longitudinal integrated database for labour market research (LISA) register compiled by Statistics Sweden...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28750634/preclinical-carotid-atherosclerosis-in-patients-with-latent-autoimmune-diabetes-in-adults-lada-type-2-diabetes-and-classical-type-1-diabetes
#7
Marta Hernández, Carolina López, Jordi Real, Joan Valls, Emilio Ortega-Martinez de Victoria, Federico Vázquez, Esther Rubinat, Minerva Granado-Casas, Nuria Alonso, Teresa Molí, Angels Betriu, Albert Lecube, Elvira Fernández, Richard David Leslie, Dídac Mauricio
BACKGROUND: LADA is probably the most prevalent form of autoimmune diabetes. Nevertheless, there are few data about cardiovascular disease in this group of patients. The aim of this study was to investigate the frequency of carotid atherosclerotic plaques in patients with LADA as compared with patients with classic type 1 diabetes and type 2 diabetes. METHODS: Patients with LADA were matched for age and gender in different proportions to patients with type 2 diabetes, and classic type 1 diabetes...
July 28, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28694083/impact-of-surface-functionalization-on-the-uptake-mechanism-and-toxicity-effects-of-silver-nanoparticles-in-hepg2-cells
#8
Lada Brkić Ahmed, Mirta Milić, Igor M Pongrac, Ana Marija Marjanović, Hrvoje Mlinarić, Ivan Pavičić, Srećko Gajović, Ivana Vinković Vrček
Safe and successful bioapplications of metallic nanoparticles depend on their physicochemical characteristics, in particular their surface properties. This study aimed to investigate how different surface functionalization of silver nanoparticles (AgNP) affect their interaction with mammalian liver cells with regard to cytotoxicity, genotoxicity and mechanism of cellular uptake. Differentially coated AgNP were prepared by surface functionalization using sodium bis(2-ethylhexyl)-sulfosuccinate (AOTAgNP), cetyltrimethylammonium bromide (CTABAgNP), poly(vinylpyrrolidone) (PVPAgNP), poly-l-lysine (PLLAgNP), and bovine serum albumin (BSAAgNP)...
September 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28692535/effect-of-cmv-and-ebv-replication-on-intestinal-mucosal-gene-expression-and-microbiome-composition-of-hiv-infected-and-uninfected-individuals
#9
Sara Gianella, Antoine Chaillon, Ece A Mutlu, Phillip A Engen, Robin M Voigt, Ali Keshavarzian, John Losurdo, Prachi Chakradeo, Steven M Lada, Masato Nakazawa, Alan L Landay
BACKGROUND: HIV-infection is associated with dramatic changes in the intestinal mucosa. The impact of other viral pathogens is unclear. METHODS: Eighty biopsies from left and right colon (n=63) and terminal ileum (n = 17) were collected from 19 HIV-infected and 22 HIV-uninfected subjects. Levels of cytomegalovirus (CMV) and Epstein Barr Virus (EBV) DNA were measured by droplet-digital (dd)PCR. Mucosal gene expression was measured via multiplex-assay. Microbiome analysis was performed using bacterial 16S-rDNA-pyrosequencing...
July 7, 2017: AIDS
https://www.readbyqxmd.com/read/28688977/prevalence-of-drug-resistance-among-hiv-1-treatment-naive-patients-in-greece-during-2003-2015-transmitted-drug-resistance-is-due-to-onward-transmissions
#10
D Paraskevis, E Kostaki, G Magiorkinis, P Gargalianos, G Xylomenos, E Magiorkinis, M Lazanas, M Chini, G Nikolopoulos, A Skoutelis, V Papastamopoulos, A Antoniadou, A Papadopoulos, M Psichogiou, G L Daikos, M Oikonomopoulou, A Zavitsanou, G Chrysos, V Paparizos, S Kourkounti, H Sambatakou, N V Sipsas, M Lada, P Panagopoulos, E Maltezos, S Drimis, A Hatzakis
BACKGROUND: The prevalence of HIV-1 drug resistance among treatment-naïve patients ranges between 8.3% and 15% in Europe and North America. Previous studies showed that subtypes A and B were the most prevalent in the Greek HIV-1 epidemic. Our aim was to estimate the prevalence of resistance among drug naïve patients in Greece and to investigate the levels of transmission networking among those carrying resistant strains. METHODS: HIV-1 sequences were determined from 3428 drug naïve HIV-1 patients, in Greece sampled during 01/01/2003-30/6/2015...
July 5, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28679646/multiplexed-elimination-of-wild-type-dna-and-high-resolution-melting-prior-to-targeted-resequencing-of-liquid-biopsies
#11
Ioannis Ladas, Mariana Fitarelli-Kiehl, Chen Song, Viktor A Adalsteinsson, Heather A Parsons, Nancy U Lin, Nikhil Wagle, G Mike Makrigiorgos
BACKGROUND: The use of clinical samples and circulating cell-free DNA (cfDNA) collected from liquid biopsies for diagnostic and prognostic applications in cancer is burgeoning, and improved methods that reduce the influence of excess wild-type (WT) portion of the sample are desirable. Here we present enrichment of mutation-containing sequences using enzymatic degradation of WT DNA. Mutation enrichment is combined with high-resolution melting (HRM) performed in multiplexed closed-tube reactions as a rapid, cost-effective screening tool before targeted resequencing...
July 5, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28669512/family-history-of-type-1-and-type-2-diabetes-and-risk-of-latent-autoimmune-diabetes-in-adults-lada
#12
R Hjort, L Alfredsson, T Andersson, P-O Carlsson, V Grill, L Groop, M Martinell, B Rasouli, P Storm, T Tuomi, S Carlsson
BACKGROUND: A family history of diabetes (FHD) is a strong predictor of diabetes risk, yet has rarely been investigated in latent autoimmune diabetes in adults (LADA). This study therefore investigated the risk of LADA and type 2 diabetes (T2D) in relation to FHD, taking into account the type of diabetes in relatives. METHODS: Data from a population-based study were used, including incident cases of LADA [glutamic acid decarboxylase antibody (GADA)-positive, n=378] and T2D (GADA-negative, n=1199), and their matched controls (n=1484)...
June 29, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28657526/useful-of-tokyo-guidelines-in-the-diagnosis-of-acute-cholecystitis-anatomopathologie-correlationship
#13
Christian Janikow, Edgardo Corti, Nicolás Menso, Gastón Moretti, Martín Alé, Martín Sánchez, Paul Eduardo Lada
BACKGROUND: In the year 2007 a group of experts come together to discuss criteria for acute cholecystitis and to establish therapeutic guidelines and states of gravity in this disease. OBJECTIVES: we correlated the criteria of the Tokyo Guidelines 2007 with the anatomopathology study of the surgical specimen. SETTING: Service of Urgencies of the National Clinic Hospital in Córdoba, Argentine. METHODS: We studied 324 patients (120 male and 204 female) older than 15 years and without limits of age with the criteria of acute cholecystitis a cord to the Tokyo guidelines 2007...
2017: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/28636393/lithium-ion-coupled-electron-transfer-rates-in-superconcentrated-electrolytes-exploring-the-bottlenecks-for-fast-charge-transfer-rates-with-limn2o4-cathode-materials
#14
Victoria A Nikitina, Maxim V Zakharkin, Sergey Yu Vassiliev, Lada V Yashina, Evgeny V Antipov, Keith J Stevenson
The charge-transfer kinetics of lithium ion intercalation into LixMn2O4 cathode materials was examined in dilute and concentrated aqueous and carbonate LiTFSI solutions using electrochemical methods. Distinctive trends in ion intercalation rates were observed between water-based and ethylene carbonate/diethyl carbonate solutions. The influence of the solution concentration on the rate of lithium ion transfer in aqueous media can be tentatively attributed to the process associated with Mn dissolution, whereas in carbonate solutions the rate is influenced by the formation of a concentration-dependent solid electrolyte interface (SEI)...
July 3, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28636001/wataa-atlas-of-protein-hydration-exploring-synergies-between-data-mining-and-ab-initio-calculations
#15
Jiří Černý, Bohdan Schneider, Lada Biedermannová
Water molecules represent an integral part of proteins and a key determinant of protein structure, dynamics and function. WatAA is a newly developed, web-based atlas of amino-acid hydration in proteins. The atlas provides information about the ordered first hydration shell of the most populated amino-acid conformers in proteins. The data presented in the atlas are drawn from two sources: experimental data and ab initio quantum-mechanics calculations. The experimental part is based on a data-mining study of a large set of high-resolution protein crystal structures...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28632336/serious-life-events-and-the-risk-of-latent-autoimmune-diabetes-in-adults-lada-and-type-2-diabetes
#16
B Rasouli, T Andersson, P-O Carlsson, R Hjort, J E Löfvenborg, M Martinell, L Groop, T Tuomi, S Carlsson
AIM: It has been suggested that experiencing serious life events may promote Type 1 diabetes in children. Studies in adults are lacking, as are studies on the interaction of life events with genetic factors. We aimed to investigate life events and the risk of latent autoimmune diabetes in adults (LADA) and Type 2 diabetes while taking into account HLA genotype. METHODS: Analysis was based on 425 incident cases of LADA, 1417 incident cases of Type 2 diabetes and 1702 population-based controls recruited in Sweden between 2010 and 2016...
June 20, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28627547/probing-the-electronic-structure-of-a-copper-ii-complex-by-cw-and-pulse-epr-spectroscopy
#17
Zoi G Lada, Yiannis Sanakis, Catherine P Raptopoulou, Vassilis Psycharis, Spyros P Perlepes, George Mitrikas
Nucleophilic attack by the carbanion (-):CH2COCH3 at the carbonyl group of di-2-pyridyl ketone, (py)2CO, in the presence of Cu(II) under moderately basic conditions has yielded the cationic mononuclear complex [Cu{(py)2C(CH2COCH3)(OH)}2](NO3)2·2H2O (1·2H2O) in ∼40% yield, where (py)2C(CH2COCH3)(OH) is the ligand bis(2-pyridine-2-yl)butane-1-ol-3-one. The Cu(II) atom of the cation sits on a crystallographically imposed inversion center. The neutral molecule is coordinated to the metal ion as a tridentate fac chelating ligand through the hydroxyl oxygen atom and two 2-pyridyl nitrogen atoms...
June 19, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28578926/the-use-of-porcine-corrosion-casts-for-teaching-human-anatomy
#18
Lada Eberlova, Vaclav Liska, Hynek Mirka, Zbynek Tonar, Stanislav Haviar, Milos Svoboda, Jan Benes, Richard Palek, Michal Emingr, Jachym Rosendorf, Patrik Mik, Sarah Leupen, Alois Lametschwandtner
In teaching and learning human anatomy, anatomical autopsy and prosected specimens have always been indispensable. However, alternative methods must often be used to demonstrate particularly delicate structures. Corrosion casting of porcine organs with Biodur E20(®) Plus is valuable for teaching and learning both gross anatomy and, uniquely, the micromorphology of cardiovascular, respiratory, digestive, and urogenital systems. Assessments of casts with a stereomicroscope and/or scanning electron microscope as well as highlighting cast structures using color coding help students to better understand how the structures that they have observed as two-dimensional images actually exist in three dimensions, and students found using the casts to be highly effective in their learning...
September 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28578875/structural-and-dynamics-characterization-of-the-merr-family-metalloregulator-cuer-in-its-repression-and-activation-states
#19
Hila Sameach, Aya Narunsky, Salome Azoulay-Ginsburg, Lada Gevorkyan-Aiapetov, Yonathan Zehavi, Yoni Moskovitz, Tamar Juven-Gershon, Nir Ben-Tal, Sharon Ruthstein
CueR (Cu export regulator) is a metalloregulator protein that "senses" Cu(I) ions with very high affinity, thereby stimulating DNA binding and the transcription activation of two other metalloregulator proteins. The crystal structures of CueR when unbound or bound to DNA and a metal ion are very similar to each other, and the role of CueR and Cu(I) in initiating the transcription has not been fully understood yet. Using double electron-electron resonance (DEER) measurements and structure modeling, we investigate the conformational changes that CueR undergoes upon binding Cu(I) and DNA in solution...
July 5, 2017: Structure
https://www.readbyqxmd.com/read/28574138/detection-of-nonexudative-choroidal-neovascularization-secondary-to-angioid-streaks-using-optical-coherence-tomography-angiography
#20
Konstantinos D Andreanos, Tryfon Rotsos, Chryssanthi Koutsandrea, Georgios D Kymionis, Ilias Georgalas, Ioannis D Ladas
PURPOSE: To present a case of nonexudative choroidal neovascularization secondary to angioid streaks in a patient with pseudoxanthoma elasticum. The lesion was monitored over an 8-month period with the use of optical coherence tomography angiography. METHODS: Case report. RESULTS: The neovascular tissue area increased by 0.160 mm2 over a period of 8 months without any sign of exudation seen on optical coherence tomography or fluorescein angiography...
May 29, 2017: European Journal of Ophthalmology
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