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https://www.readbyqxmd.com/read/28212522/taking-up-the-cudgels-for-the-traditional-reactive-oxygen-and-nitrogen-species-detection-assays-and-their-use-in-the-cardiovascular-system
#1
REVIEW
Andreas Daiber, Matthias Oelze, Sebastian Steven, Swenja Kröller-Schön, Thomas Münzel
Reactive oxygen and nitrogen species (RONS such as H2O2, nitric oxide) confer redox regulation of essential cellular functions (e.g. differentiation, proliferation, migration, apoptosis), initiate and catalyze adaptive stress responses. In contrast, excessive formation of RONS caused by impaired break-down by cellular antioxidant systems and/or insufficient repair of the resulting oxidative damage of biomolecules may lead to appreciable impairment of cellular function and in the worst case to cell death, organ dysfunction and severe disease phenotypes of the entire organism...
February 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28212517/phytoremediation-of-dyes-using-lagerstroemia-speciosa-mediated-silver-nanoparticles-and-its-biofilm-activity-against-clinical-strains-pseudomonas-aeruginosa
#2
V Sai Saraswathi, Neethu Kamarudheen, K V BhaskaraRao, K Santhakumar
The aim of this study was to prepare silver nanoparticles by a green method using the aqueous leaves extract of Lagerstroemia speciosa. The prepared silver nanoparticles were characterized, studied for its photocatalytic and biofilm inhibition studies. The maximum absorbance peak was found at 427nm and thus confirming the formation of silver nanoparticles. The average size of silver nanoparticles synthesized was found to be 12nm using XRD and it was spherical in shape. The nanoparticles synthesized was investigated for photocatalytic activity for to two different dye molecules, methyl orange and methylene blue showing 310 and 290min degradation time respectively...
February 10, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28212302/the-importance-of-conditioned-stimuli-in-cigarette-and-e-cigarette-craving-reduction-by-e-cigarettes
#3
Martijn Van Heel, Dinska Van Gucht, Koen Vanbrabant, Frank Baeyens
This study examined the impact of four variables pertaining to the use of e-cigarettes (e-cigs) on cravings for tobacco cigarettes and for e-cigs after an overnight abstinence period. The four variables were the nicotine level, the sensorimotor component, the visual aspect, and the aroma of the e-cig. In an experimental study, 81 participants without prior vaping experience first got acquainted with using e-cigs in a one-week tryout period, after which they participated in a lab session assessing the effect of five minutes of vaping following an abstinence period of 12 h...
February 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28212123/repeatability-study-of-angular-and-linear-measurements-on-facial-morphology-analysis-by-means-of-stereophotogrammetry
#4
Lilian Mendes Andrade, Ana Maria Bettoni Rodrigues da Silva, Laís Valencise Magri, Marco Antônio Moreira Rodrigues da Silva
The aim of this study was to analyze the repeatability in a stereophotogrammetry digital system used for the evaluation of facial morphology. Thirty healthy Brazilian, 18 to 45 years old (26.71 ± 6.53), had 11 reference landmarks marked on their faces by the same examiner and were photographed with an interval of 1 week by the VECTRA M3. Nine angular measurements (nasolabial, mentolabial, nasofrontal, maxillofacial, nasal, maxillary, mandibular, facial convexity, full facial convexity) and 2 linear measurements (middle facial height and lower facial height) were taken...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28212117/validation-of-the-incept-a-multisource-feedback-tool-for-capturing-different-perspectives-on-physicians-professional-performance
#5
Mirja W van der Meulen, Benjamin C M Boerebach, Alina Smirnova, Sylvia Heeneman, Mirjam G A Oude Egbrink, Cees P M van der Vleuten, Onyebuchi A Arah, Kiki M J M H Lombarts
INTRODUCTION: Multisource feedback (MSF) instruments are used to and must feasibly provide reliable and valid data on physicians' performance from multiple perspectives. The "INviting Co-workers to Evaluate Physicians Tool" (INCEPT) is a multisource feedback instrument used to evaluate physicians' professional performance as perceived by peers, residents, and coworkers. In this study, we report on the validity, reliability, and feasibility of the INCEPT. METHODS: The performance of 218 physicians was assessed by 597 peers, 344 residents, and 822 coworkers...
February 15, 2017: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/28212103/simulation-of-healing-threshold-in-strain-induced-inflammation-through-a-discrete-informatics-model
#6
Israr Ibrahim, Sanjay Venkata Oruganti, Ramana Pidaparti
Respiratory diseases such as asthma and acute respiratory distress syndrome as well as acute lung injury involve inflammation at the cellular level. The inflammation process is very complex and is characterized by the emergence of cytokines along with other changes in cellular processes. Due to the complexity of the various constituents that makes up the inflammation dynamics, it is necessary to develop models that can complement experiments to fully understand inflammatory diseases. In this study, we developed a discrete informatics model based on cellular automata (CA) approach to investigate the influence of elastic field (stretch/strain) on the dynamics of inflammation and account for probabilistic adaptation based on statistical interpretation of existing experimental data...
February 15, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28212051/-99m-tc-mag3-image-wisely
#7
Andrew T Taylor, Russell D Folks, A K M Fazlur Rahman, Aruna Polsani, Eva V Dubovsky, Raghuveer Halkar, Amita Manatunga
Purpose To determine if commonly administered doses of technetium 99m ((99m)Tc) mertiatide (MAG3) in the range of 300-370 MBq (approximately 8-10 mCi) contribute to image interpretation and justify the resulting radiation exposure. Materials and Methods The respective institutional review boards approved this HIPAA-compliant study and waived informed consent. Baseline and furosemide (99m)Tc-MAG3 imaging examinations in 50 patients suspected of having renal obstruction and 48 patients suspected of having renovascular hypertension (RVH) were randomly selected from archived databases and were independently scored by three experienced readers without access to 2-second flow images...
February 17, 2017: Radiology
https://www.readbyqxmd.com/read/28211922/applying-phasor-approach-analysis-of-multiphoton-flim-measurements-to-probe-the-metabolic-activity-of-three-dimensional-in-vitro-cell-culture-models
#8
Pirmin H Lakner, Michael G Monaghan, Yvonne Möller, Monilola A Olayioye, Katja Schenke-Layland
Fluorescence lifetime imaging microscopy (FLIM) can measure and discriminate endogenous fluorophores present in biological samples. This study seeks to identify FLIM as a suitable method to non-invasively detect a shift in cellular metabolic activity towards glycolysis or oxidative phosphorylation in 3D Caco-2 models of colorectal carcinoma. These models were treated with potassium cyanide or hydrogen peroxide as controls, and epidermal growth factor (EGF) as a physiologically-relevant influencer of cell metabolic behaviour...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211818/comparison-of-the-effects-of-bilateral-and-unilateral-training-after-stroke-a-meta-analysis
#9
Yejin Lee, Moon Young Kim, Ji-Hyuk Park, Hae Yean Park
BACKGROUND: The differential effects of bilateral and unilateral training on upper extremity (UE) function remain unclear. OBJECTIVE: To compare the effectiveness of bilateral and unilateral training on UE function and activities of daily living (ADL) after stroke. METHODS: Randomized controlled trials (RCTs) were selected for inclusion by two reviewers after searching the following databases: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), and KoreaMed...
February 15, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28211806/digital-breast-tomosynthesis-plus-mammography-magnetic-resonance-imaging-plus-mammography-and-mammography-alone-a-comparison-of-diagnostic-performance-in-symptomatic-women
#10
Wei Tang, Fei-Xiang Hu, Hui Zhu, Qi-Feng Wang, Ya-Jia Gu, Wei-Jun Peng
PURPOSE: To compare the diagnostic efficiency of digital breast tomosynthesis (DBT) plus digital mammography (DM) and magnetic resonance imaging (MRI) plus DM in symptomatic women. MATERIALS AND METHODS: The protocol used in our study was accepted by the ethics committee at our hospital, and informed consent was obtained from all patients. Between June and December 2014, 197 patients with 238 histologically proven lesions all underwent DM, DBT and MRI. Two radiologists were responsible for interpreting all images according to the Breast Imaging Reporting and Data System (BI-RADS)...
February 17, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28211717/isomeric-character-of-the-lowest-observed-4-state-in-44-s
#11
J J Parker, I Wiedenhöver, P D Cottle, J Baker, D McPherson, M A Riley, D Santiago-Gonzalez, A Volya, V M Bader, T Baugher, D Bazin, A Gade, T Ginter, H Iwasaki, C Loelius, C Morse, F Recchia, D Smalley, S R Stroberg, K Whitmore, D Weisshaar, A Lemasson, H L Crawford, A O Macchiavelli, K Wimmer
Previous experiments observed a 4^{+} state in the N=28 nucleus ^{44}S and suggested that this state may exhibit a hindered E2-decay rate, inconsistent with being a member of the collective ground state band. We populate this state via two-proton knockout from a beam of exotic ^{46}Ar projectiles and measure its lifetime using the recoil distance method with the GRETINA γ-ray spectrometer. The result, 76(14)_{stat}(20)_{syst}  ps, implies a hindered transition of B(E2;4^{+}→2_{1}^{+})=0.61(19) single-particle or Weisskopf units strength and supports the interpretation of the 4^{+} state as a K=4 isomer, the first example of a high-K isomer in a nucleus of such low mass...
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28211611/short-acting-glp-1-receptor-agonists-as-add-on-to-insulin-therapy-in-type-1-diabetes-a-review
#12
REVIEW
Anders Albèr, Andreas Brønden, Filip K Knop
A large proportion of patients with type 1 diabetes do not reach their glycemic target of glycated hemoglobin (HbA1c) <7.0% (53 mmol/mol) and, furthermore, an increasing number of patients with type 1 diabetes suffer from overweight and obesity. Treatment of type 1 diabetes is based on insulin therapy with well-described and unfortunate adverse effects such as hypoglycemia and increased body weight. Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have received increasing interest as a possible adjunctive treatment to insulin in type 1 diabetes due to their glucagonostatic and extrapancreatic effects...
February 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28211582/what-can-genome-wide-association-studies-tell-us-about-the-evolutionary-forces-maintaining-genetic-variation-for-quantitative-traits
#13
REVIEW
Emily B Josephs, John R Stinchcombe, Stephen I Wright
I. II. III. IV. V. References SUMMARY: Understanding the evolutionary forces that shape genetic variation within species has long been a goal of evolutionary biology. Integrating data for the genetic architecture of traits from genome-wide association mapping studies (GWAS) along with the development of new population genetic methods for identifying selection in sequence data may allow us to evaluate the roles of mutation-selection balance and balancing selection in shaping genetic variation at various scales...
February 17, 2017: New Phytologist
https://www.readbyqxmd.com/read/28211566/applying-standard-perikymata-profiles-to-pongo-pygmaeus-canines-to-estimate-perikymata-counts-between-linear-enamel-hypoplasias
#14
Mackie O'Hara
OBJECTIVES: Recently, studies have interpreted regular spacing and average number of perikymata between dental enamel defects in orangutans to reflect seasonal episodes of physiological stress. To estimate the amount of time between developmental defects (enamel hypoplasia), studies have relied on perikymata counts. Unfortunately, perikymata are frequently not continuously visible between defects, significantly reducing data sets. A method is presented here for estimating the number of perikymata between defects using standard perikymata profiles (SPP) that allow the number of perikymata between all pairs of defects across a tooth to be analyzed...
February 17, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28211561/comparison-of-observed-and-expected-levels-of-genetic-diversity-based-on-surname-frequencies-an-example-from-historical-massachusetts
#15
John H Relethford
OBJECTIVES: The inverse of random inbreeding based on surname frequencies (1/Fr ) is an estimate of genetic diversity, and its expectation is a function of the number of migrants into a population. Observed and expected values of (1/Fr ) were compared to determine if observed diversity matches theoretical expectations under conditions of rapid demographic change using data from historical Massachusetts. MATERIALS AND METHODS: Data on migration and surnames were taken from 6,038 marriage records from the eighteenth and nineteenth centuries from five towns in north-central Massachusetts...
February 17, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28211559/behavioral-genetics-in-polish-print-news-media-between-2000-and-2014
#16
Jan Domaradzki
OBJECTIVES: The aim of this paper is to describe how Polish print news media frame relations between genetics and human behaviors and what images of behavioral genetics dominate in press discourse. METHODS: A content and frame analysis of 72 print news articles about behavioral genetics published between 2000 and 2014 in four major Polish weekly magazines: "Polityka", "Wprost", "Newsweek" and "Przekrój" was conducted. RESULTS: Twenty one different behaviors were mentioned in the sample and six major analytic frames were identified: essentialist, materialistic, deterministic, probabilistic, optimistic and pessimistic...
December 23, 2016: Psychiatria Polska
https://www.readbyqxmd.com/read/28211333/multiple-pesticide-residues-in-live-and-poisoned-honeybees-%C3%A2-preliminary-exposure-assessment
#17
Tomasz Kiljanek, Alicja Niewiadowska, Marta Gaweł, Stanisław Semeniuk, Milena Borzęcka, Andrzej Posyniak, Krystyna Pohorecka
Study combines data about the exposure of honeybees to pesticides from plant protection products and veterinary medicinal products. Residues of 200 pesticide and pesticide metabolites in 343 live and 74 poisoned honeybee samples, obtained during the years of 2014-2015, were determined by LC-MS/MS and GC-MS/MS. In 44% of live honeybee 48 different pesticide residues were found, mainly amitraz metabolites (DMF, DMPF) and chlorpyrifos. In 98% of poisoned honeybee 57 pesticides and metabolites were detected, mainly chlorpyrifos, dimethoate and clothianidin...
February 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28211276/tuning-the-pseudospin-polarization-of-graphene-by-a-pseudo-magnetic-field
#18
Alexander Georgi, Peter Nemes-Incze, Ramon Carrillo-Bastos, Daiara Faria, Silvia Viola Kusminskiy, Dawei Zhai, Martin Schneider, Dinesh Subramaniam, Torge Mashoff, Nils Michael Freitag, Marcus Liebmann, Marco Pratzer, Ludger Wirtz, Colin R Woods, Roman Vladislavovich Gorbachev, Yang Cao, Kostya S Novoselov, Nancy Sandler, Markus Morgenstern
One of the intriguing characteristics of honeycomb lattices is the appearance of a pseudo-magnetic field as a result of mechanical deformation. In the case of graphene, the Landau quantization resulting from this pseudo-magnetic field has been measured using scanning tunneling microscopy. Here we show that a signature of the pseudo-magnetic field is a local sublattice symmetry breaking observable as a redistribution of the local density of states. This can be interpreted as a polarization of graphene's pseudospin due to a strain induced pseudo-magnetic field, in analogy to the alignment of a real spin in a magnetic field...
February 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/28211273/sub-bandgap-voltage-electroluminescence-and-magneto-oscillations-in-a-wse2-light-emitting-van-der-waals-heterostructure
#19
Johannes Binder, Freddie Withers, Maciej R Molas, Clement Faugeras, Karol Nogajewski, Kenji Watanabe, Takashi Taniguchi, Aleksey Kozikov, Andre K Geim, Kostya S Novoselov, Marek Potemski
We report on experimental investigations of an electrically driven WSe2 based light-emitting van der Waals heterostructure. We observe a threshold voltage for electroluminescence significantly lower than the corresponding single particle band gap of monolayer WSe2. This observation can be interpreted by considering the Coulomb interaction and a tunneling process involving excitons, well beyond the picture of independent charge carriers. An applied magnetic field reveals pronounced magneto-oscillations in the electroluminescence of the free exciton emission intensity with a 1/B-periodicity...
February 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/28211249/improving-the-interpretability-of-climate-landscape-metrics-an-ecological-risk-analysis-of-japan-s-marine-protected-areas
#20
Jorge García Molinos, Shintaro Takao, Naoki H Kumagai, Elvira S Poloczanska, Michael T Burrows, Masahiko Fujii, Hiroya Yamano
Conservation efforts strive to protect significant swaths of terrestrial, freshwater and marine ecosystems from a range of threats. As climate change becomes an increasing concern, these efforts must take into account how resilient protected spaces will be in the face of future drivers of change such as warming temperatures. Climate landscape metrics, which signal the spatial magnitude and direction of climate change, support a convenient initial assessment of potential threats to and opportunities within ecosystems to inform conservation and policy efforts where biological data are not available...
February 17, 2017: Global Change Biology
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