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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
#1
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, while in carbonate solutions the rate is influenced by the formation of a concentration-dependent solid electrolyte interface (SEI)...
June 21, 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
#2
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
#3
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
#4
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
#5
Lada Eberlova, Vaclav Liska, Hynek Mirka, Zbynek Tonar, Stanislav Haviar, Milos Svoboda, Jan Benes, Richard Palek, Michal Eminger, 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...
June 1, 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
#6
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...
May 26, 2017: Structure
https://www.readbyqxmd.com/read/28574138/detection-of-nonexudative-choroidal-neovascularization-secondary-to-angioid-streaks-using-optical-coherence-tomography-angiography
#7
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
https://www.readbyqxmd.com/read/28573146/prevalence-of-positive-diabetes-associated-autoantibodies-among-type-2-diabetes-and-related-metabolic-and-inflammatory-differences-in-a-sample-of-the-bulgarian-population
#8
Emanuela Tsvetkova Zaharieva, Tsvetelina Veselinova Velikova, Adelina Dimitrova Tsakova, Zdravko Asenov Kamenov
BACKGROUND: The study aimed to estimate the prevalence of unrecognized cases with positive autoantibodies among type 2 diabetes (T2D) in a sample of the Bulgarian population and to compare some metabolic and inflammatory markers to those of patients having negative autoantibodies and subjects with latent autoimmune diabetes (LADA). METHODS: Patients with T2D, patients with LADA, and control participants were enrolled. Antiglutamic acid decarboxylase, anti-insulinoma-associated 2, and antizinc transporter 8 autoantibodies were assayed through ELISA...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28553155/global-multi-layer-network-of-human-mobility
#9
Alexander Belyi, Iva Bojic, Stanislav Sobolevsky, Izabela Sitko, Bartosz Hawelka, Lada Rudikova, Alexander Kurbatski, Carlo Ratti
Recent availability of geo-localized data capturing individual human activity together with the statistical data on international migration opened up unprecedented opportunities for a study on global mobility. In this paper, we consider it from the perspective of a multi-layer complex network, built using a combination of three datasets: Twitter, Flickr and official migration data. Those datasets provide different, but equally important insights on the global mobility - while the first two highlight short-term visits of people from one country to another, the last one - migration - shows the long-term mobility perspective, when people relocate for good...
July 3, 2017: International Journal of Geographical Information Science: IJGIS
https://www.readbyqxmd.com/read/28544229/clinical-heterogeneity-of-type-1-diabetes-t1d-found-in-asia
#10
REVIEW
Yongsoo Park, Kupper A Wintergerst, Zhiguang Zhou
Diabetes mellitus among young patients in Asia is caused by a complex set of factors. Although T1D remains the most common form of diabetes in children, the recent unabated increase in obesity has resulted in the emergence of T2D as a new type of diabetes at adolescent and young adult age. In addition to the typical autoimmune type 1 diabetes (T1aD) and type 2 diabetes (T2D) patients, there is a variable incidence of cases of non-autoimmune types of T1D associated with insulin deficiency (T1bD). Additional forms have been described, including fulminant T1D (FT1D)...
May 19, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28543811/the-structural-flexibility-of-the-human-copper-chaperone-atox1-insights-from-combined-pulsed-epr-studies-and-computations
#11
Ariel R Levy, Meital Turgeman, Lada Gevorkyan-Aiapetov, Sharon Ruthstein
Metallochaperones are responsible for shuttling metal ions to target proteins. Thus, a metallochaperone's structure must be sufficiently flexible both to hold onto its ion while traversing the cytoplasm and to transfer the ion to or from a partner protein. Here, we sought to shed light on the structure of Atox1, a metallochaperone involved in the human copper regulation system. Atox1 shuttles copper ions from the main copper transporter, Ctr1, to the ATP7b transporter in the Golgi apparatus. Conventional biophysical tools such as X-ray or NMR cannot always target the various conformational states of metallochaperones, owing to a requirement for crystallography or low sensitivity and resolution...
May 20, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28532935/toric-outcomes-computer-assisted-registration-versus-intraoperative-aberrometry
#12
Jonathan D Solomon, John Ladas
PURPOSE: To compare refractive outcomes of intraoperative computer-assisted registration and intraoperative aberrometry for the reduction of cylinder during toric intraocular lens (IOL) placement. SETTING: Bowie Vision Institute, Bowie, Maryland, USA. DESIGN: Prospective randomized case series. METHOD: The patients were divided into 2 groups that had toric IOL implantation after phacoemulsification. The intraoperative computer-assisted registration group (Group 1) had preoperative toric calculations...
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28514308/emotional-exhaustion-induced-latent-autoimmune-diabetes-in-adults-in-a-young-lady-a-care-compliant-case-report
#13
Yin-Ling Chen, Yong-Chao Qiao, Xin-Nan Song, Wei Ling, Hai-Lu Zhao, Xiao-Xi Zhang
RATIONALE: Latent autoimmune diabetes in adults (LADA) refers to an autoimmune disorder characterized with detectable islets antibodies in the early diagnosis and increased autoimmune beta-cell failure progression. Notably, this kind of diabetes seems to be confused with other phenotypic diabetes. PATIENT CONCERNS: A young woman suffered an emotional exhaustion-induced LADA, showing asthenia, polydipsia, polyuria, and visible weight loss. The patient emotionally ended a 14-year romantic relationship, leading to the emotional flooding...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28498882/mutational-signatures-and-mutable-motifs-in-cancer-genomes
#14
Igor B Rogozin, Youri I Pavlov, Alexander Goncearenco, Subhajyoti De, Artem G Lada, Eugenia Poliakov, Anna R Panchenko, David N Cooper
Cancer is a genetic disorder, meaning that a plethora of different mutations, whether somatic or germ line, underlie the etiology of the 'Emperor of Maladies'. Point mutations, chromosomal rearrangements and copy number changes, whether they have occurred spontaneously in predisposed individuals or have been induced by intrinsic or extrinsic (environmental) mutagens, lead to the activation of oncogenes and inactivation of tumor suppressor genes, thereby promoting malignancy. This scenario has now been recognized and experimentally confirmed in a wide range of different contexts...
May 11, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28494148/raman-spectroscopy-of-lattice-matched-graphene-on-strongly-interacting-metal-surfaces
#15
Dmitry Yu Usachov, Valery Yu Davydov, Vladimir S Levitskii, Viktor O Shevelev, Dmitry Marchenko, Boris V Senkovskiy, Oleg Yu Vilkov, Artem G Rybkin, Lada V Yashina, Evgueni V Chulkov, Irina Yu Sklyadneva, Rolf Heid, Klaus-Peter Bohnen, Clemens Laubschat, Denis V Vyalikh
Regardless of the widely accepted opinion that there is no Raman signal from single-layer graphene when it is strongly bonded to a metal surface, we present Raman spectra of a graphene monolayer on Ni(111) and Co(0001) substrates. The high binding energy of carbon to these surfaces allows formation of lattice-matched (1 × 1) structures where graphene is significantly stretched. This is reflected in a record-breaking shift of the Raman G band by more than 100 cm(-1) relative to the case of freestanding graphene...
May 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28490257/tissue-distribution-and-elimination-of-deoxynivalenol-and-ochratoxin-a-in-dietary-exposed-atlantic-salmon-salmo-salar
#16
Aksel Bernhoft, Helga R Høgåsen, Grethe Rosenlund, Lada Ivanova, Marc H G Berntssen, Jan Alexander, Gunnar Sundstøl Eriksen, Christiane Kruse Fæste
Post-smolt Atlantic salmon (Salmo salar) were fed standard feed with added 2 or 6 mg kg(-1) pure deoxynivalenol (DON), 0.8 or 2.4 mg kg(-1) pure ochratoxin A (OTA), or no added toxins for up to 8 weeks. The experiments were performed in duplicate tanks with 25 fish each per diet group, and the feed was given for three 2-h periods per day. After 3, 6 and 8 weeks, 10 fish from each diet group were sampled. In the following hours after the last feeding at 8 weeks, toxin elimination was studied by sampling three fish per diet group at five time points...
May 22, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28479035/erratum-to-prevalence-and-risk-factors-for-diabetic-retinopathy-at-diagnosis-drad-in-patients-recently-diagnosed-with-type-2-diabetes-t2d-or-latent-autoimmune-diabetes-in-the-adult-lada-j-diabetes-complications-30-8-1456-1461
#17
Mats Martinell, Mozhgan Dorkhan, Jan Stålhammar, Petter Storm, Leif Groop, Carin Gustavsson
No abstract text is available yet for this article.
May 3, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28472676/biotransformation-of-the-mycotoxin-enniatin-b1-in-pigs-a-comparative-in%C3%A2-vitro-and-in%C3%A2-vivo-approach
#18
Lada Ivanova, Silvio Uhlig, Mathias Devreese, Siska Croubels, Christiane Kruse Fæste
Enniatins (ENNs) are hexadepsipeptidic mycotoxins produced by Fusarium species. They occur in mg/kg levels in grain from Northern climate areas. Major ENNs such as ENN B and B1 have shown considerable cytotoxicity in different in vitro test systems. To adequately assess exposure and in vivo toxicity the toxicokinetic properties need to be investigated. The present study describes the metabolism of ENN B1 both in vitro and in vivo in pigs, comparing metabolites found in vitro in experiments with liver microsomes from different pig strains to those found in the plasma of pigs after single oral or intravenous application of ENN B1...
May 2, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28472070/increased-seroreactivity-to-proinsulin-and-homologous-mycobacterial-peptides-in-latent-autoimmune-diabetes-in-adults
#19
Magdalena Niegowska, Alessandro Delitala, Giovanni Mario Pes, Giuseppe Delitala, Leonardo A Sechi
Latent Autoimmune Diabetes in Adults (LADA) is a slowly progressing form of immune-mediated diabetes that combines phenotypical features of type 2 diabetes (T2D) with the presence of islet cell antigens detected in type 1 diabetes (T1D). Heterogeneous clinical picture have led to the classification of patients based on the levels of antibodies against glutamic acid decarboxylase 65 (GADA) that correlate with clinical phenotypes closer to T1D or T2D when GADA titers are high or low, respectively. To date, LADA etiology remains elusive despite numerous studies investigating on genetic predisposition and environmental risk factors...
2017: PloS One
https://www.readbyqxmd.com/read/28466315/-type-1-diabetes-lada-double-diabetes-differential-diagnosis-and-therapy
#20
REVIEW
Michael Hummel, Martin Füchtenbusch
No abstract text is available yet for this article.
May 2017: MMW Fortschritte der Medizin
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