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https://www.readbyqxmd.com/read/28735489/a-zebrafish-model-for-evaluating-the-function-of-human-leukemic-gene-idh1-and-its-mutation
#1
Alvin C H Ma, Xiangguo Shi, Bai-Liang He, Yuhan Guo, Anskar Y H Leung
The recent advent of next-generation sequencing (NGS) has greatly accelerated identification of gene mutations in myeloid malignancies at unprecedented speed that will soon outpace their functional validation by conventional laboratory techniques and animal models. A high-throughput whole-organism model is useful for the functional validation of new mutations. We recently reported the use of zebrafish to evaluate the hematopoietic function of isocitrate dehydrogenase 1 (IDH1) and the effects of expressing human IDH1-R132H that is frequently identified in human acute myeloid leukemia (AML), in myelopoiesis, with a view to develop zebrafish as a model of AML...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735308/bactericidal-activity-of-octenidine-to-various-genospecies-of-borrelia-burgdorferi-sensu-lato-spirochetes-in-vitro-and-in-vivo
#2
Stanisława Tylewska-Wierzbanowska, Urszula Rogulska, Grażyna Lewandowska, Tomasz Chmielewski
The aim of our studies was to invent a reliable method for detection of the bactericidal activity of disinfectants against Borrelia burgdorferi in suspension (in vitro) and in cell line cultures (in vivo). In the suspension method, 0.01% octenidine at 20°C and 35°C was bactericidal to Borrelia afzeli; Borrelia garini, B. burgdorferi sensu stricto after 5 minutes treatment. Increase of the temperature to 35°C speed up the bactericidal effect to 1 minute. The bactericidal action of octenidine towards B. burgdorferi spirochetes growing in fibroblasts was less effective and needed a longer time to kill them than in the suspension...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735202/effect-of-wii-fit%C3%A2-exercise-therapy-on-gait-parameters-in-ankle-sprain-patients-a-randomized-controlled-trial
#3
Ilona M Punt, Stéphane Armand, Jean-Luc Ziltener, Lara Allet
Ankle sprains are the most common sport related injuries. An alternative to physical therapy in the treatment of ankle sprains is home based exercise therapy. This study aims to compare the effectiveness of Wii Fit™ exercise therapy in ankle sprain patients on temporal-spatial and kinematic gait parameters with a) conventional therapy and b) a control group not receiving exercise therapy. Ninety patients were randomly assigned to a Wii Fit™, physical therapy or control group. Temporal-spatial and kinematic gait parameters were assessed at baseline, 6 weeks and 6 months follow-up...
June 29, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28735178/development-of-a-real-time-prediction-model-of-driver-behavior-at-intersections-using-kinematic-time-series-data
#4
Yaoyuan V Tan, Michael R Elliott, Carol A C Flannagan
As connected autonomous vehicles (CAVs) enter the fleet, there will be a long period when these vehicles will have to interact with human drivers. One of the challenges for CAVs is that human drivers do not communicate their decisions well. Fortunately, the kinematic behavior of a human-driven vehicle may be a good predictor of driver intent within a short time frame. We analyzed the kinematic time series data (e.g., speed) for a set of drivers making left turns at intersections to predict whether the driver would stop before executing the turn...
July 20, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28734998/oxidative-stress-with-tau-hyperphosphorylation-in-memory-impaired-1-2-diacetylbenzene-treated-mice
#5
Sin-Woo Kang, Sung Jin Kim, Min-Sun Kim
Long-term exposure to organic solvent may be related to the incidence of neuronal diseases, such as, Alzheimer's disease, depression, multiple sclerosis, dementia, Parkinson's disease. Previously, the authors reported 1,2-diacetylbenzene (DAB; a neurotoxic metabolite of 1,2-diethylbenzene) causes central and peripheral neuropathies that lead to motor neuronal deficits. Furthermore, it is known DAB increases oxidative stress and protein adduct levels and impairs hippocampal neurogenesis in mice. The authors examined the relevance of oxidative stress and tau hyperphosphorylation in the hippocampus...
July 19, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28734954/sparse-mri-reconstruction-using-multi-contrast-image-guided-graph-representation
#6
Zongying Lai, Xiaobo Qu, Hengfa Lu, Xi Peng, Di Guo, Yu Yang, Gang Guo, Zhong Chen
Accelerating the imaging speed without sacrificing image structures plays an important role in magnetic resonance imaging. Under-sampling the k-space data and reconstructing the image with sparsity constraint is one efficient way to reduce the data acquisition time. However, achieving high acceleration factor is challenging since image structures may be lost or blurred when the acquired information is not sufficient. Therefore, incorporating extra knowledge to improve image reconstruction is expected for highly accelerated imaging...
July 19, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28734785/impact-of-magnetic-stirring-on-stainless-steel-integrity-effect-on-biopharmaceutical-processing
#7
Christopher Thompson, Kelly Wilson, Yoen Joo Kim, Min Xie, William K Wang, Michaela Wendeler
Stainless steel containers are widely used in the pharmaceutical and biopharmaceutical industry for the storage of buffers, process intermediates, and purified drug substance. They are generally held to be corrosion resistant, biocompatible, and non-reactive, although it is well established that trace amounts of metal ions can leach from stainless steel equipment into biopharmaceutical products. We report here that the use of stainless steel containers in conjunction with magnetic stirring bars leads to significantly aggravated metal contamination, consisting both of metal particles and significantly elevated metal ions in solution, the degree of which is several orders of magnitude higher than described for static conditions...
July 19, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28734762/breast-cancer-mortality-in-european-union-an-outlook-of-good-news-and-bad-news-in-a-two-speed-europe
#8
EDITORIAL
Giuseppe Curigliano, Fatima Cardoso
No abstract text is available yet for this article.
July 19, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28734679/assessment-of-biodistribution-using-mesenchymal-stromal-cells-algorithm-for-study-design-and-challenges-in-detection-methodologies
#9
Blanca Reyes, Maria Isabel Coca, Margarita Codinach, María Dolores López-Lucas, Anna Del Mazo-Barbara, Marta Caminal, Irene Oliver-Vila, Valentín Cabañas, Silvia Lope-Piedrafita, Joan García-López, José M Moraleda, Cesar G Fontecha, Joaquim Vives
BACKGROUND AIMS: Biodistribution of candidate cell-based therapeutics is a critical safety concern that must be addressed in the preclinical development program. We aimed to design a decision tree based on a series of studies included in actual dossiers approved by competent regulatory authorities, noting that the design, execution and interpretation of pharmacokinetics studies using this type of therapy is not straightforward and presents a challenge for both developers and regulators...
July 19, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28734607/impact-of-instrument-and-column-parameters-on-high-throughput-liquid-chromatography-performance
#10
Martin Gilar, Thomas S McDonald, Fabrice Gritti
The speed and separation performance of high-throughput liquid chromatography (HT LC) was investigated. We evaluated the contributions of various experimental parameters to the total analysis cycle time, including column length (column void time), gradient delay, flow rate, auto-sampler (A/S) speed, and software related delays. The best case injection-to-injection cycle time of 22s was achieved using 12s gradient time and 2.1×20mm columns packed with 1.7μm C18 particles. The total 22s analytical duty cycle consisted of 2...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28734592/publishing-with-objective-charisma-breaking-science-s-paradox
#11
Zoë A Doubleday, Sean D Connell
Good writing takes time, but in a research environment where speed is master, is it a superfluous pursuit? Scientists spend most of their working life writing, yet our writing style obstructs its key purpose: communication. We advocate more accessible prose that boosts the influence of our publications. For those who change, the proof of their success will be science that is read, understood, and remembered.
July 19, 2017: Trends in Ecology & Evolution
https://www.readbyqxmd.com/read/28734571/multimodal-ultrasound-computer-assisted-tomography-an-approach-to-the-recognition-of-breast-lesions
#12
Krzysztof J Opieliński, Piotr Pruchnicki, Paweł Szymanowski, Wioletta K Szepieniec, Hanna Szweda, Elżbieta Świś, Marcin Jóźwik, Michał Tenderenda, Mariusz Bułkowski
The research here presented aims at developing a new, promising method for the imaging diagnostics of breast lesions - ultrasound tomography (UST). A currently implemented device enables the reconstruction three complementary images for each coronal breast section. Based on in vivo breast examination, the authors developed an approach to breast diagnostics which employs ultrasound transmission and reflection tomography imaging. The obtained transmission images of ultrasound speed distribution show good correlation of glandular tissue areas with their visualization on MRI images...
July 3, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28734543/crouch-severity-is-a-poor-predictor-of-elevated-oxygen-consumption-in-cerebral-palsy
#13
Katherine M Steele, Benjamin R Shuman, Michael H Schwartz
Children with cerebral palsy (CP) expend more energy to walk compared to typically-developing peers. One of the most prevalent gait patterns among children with CP, crouch gait, is often singled out as especially exhausting. The dynamics of crouch gait increase external flexion moments and the demand on extensor muscles. This elevated demand is thought to dramatically increase energy expenditure. However, the impact of crouch severity on energy expenditure has not been investigated among children with CP. We evaluated oxygen consumption and gait kinematics for 573 children with bilateral CP...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28734348/ion-mobility-spectrometry-combined-with-ultra-performance-liquid-chromatography-mass-spectrometry-for-metabolic-phenotyping-of-urine-effects-of-column-length-gradient-duration-and-ion-mobility-spectrometry-on-metabolite-detection
#14
Paul D Rainville, Ian D Wilson, Jeremy K Nicholson, Giorgis Issacs, Lauren Mullin, James I Langridge, Robert S Plumb
The need for rapid and efficient high throughput metabolic phenotyping (metabotyping) in metabolomic/metabonomic studies often requires compromises to be made between analytical speed and metabolome coverage. Here the effect of column length (150, 75 and 30 mm) and gradient duration (15, 7.5 and 3 min respectively) on the number of features detected when untargeted metabolic profiling of human urine using reversed-phase gradient ultra performance chromatography with, and without, ion mobility spectrometry, has been examined...
August 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28734308/molecular-simulation-of-caloric-properties-of-fluids-modelled-by-force-fields-with-intramolecular-contributions-application-to-heat-capacities
#15
William R Smith, Jan Jirsák, Ivo Nezbeda, Weikai Qi
The calculation of caloric properties such as heat capacity, Joule-Thomson coefficients, and the speed of sound by classical force-field-based molecular simulation methodology has received scant attention in the literature, particularly for systems composed of complex molecules whose force fields (FFs) are characterized by a combination of intramolecular and intermolecular terms. The calculation of a thermodynamic property for a system whose molecules are described by such a FF involves the calculation of the residual property prior to its addition to the corresponding ideal-gas property, the latter of which is separately calculated, either using thermochemical compilations or nowadays accurate quantum mechanical calculations...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28734279/a-discrete-fourier-encoded-diagonal-free-experiment-to-simplify-homonuclear-2d-nmr-correlations
#16
Zebin Huang, Quanshuai Guan, Zhong Chen, Lucio Frydman, Yulan Lin
Nuclear magnetic resonance (NMR) spectroscopy has long served as an irreplaceable, versatile tool in physics, chemistry, biology, and materials sciences, owing to its ability to study molecular structure and dynamics in detail. In particular, the connectivity of chemical sites within molecules, and thereby molecular structure, becomes visible by multi-dimensional NMR. Homonuclear correlation experiments are a powerful tool for identifying coupled spins. Generally, diagonal peaks in these correlation spectra display the strongest intensities and do not offer any new information beyond the standard one-dimensional spectrum, whereas weaker, symmetrically placed cross peaks contain most of the coupling information...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28734230/simultaneous-scanning-tunneling-microscopy-and-synchrotron-x-ray-measurements-in-a-gas-environment
#17
Rik V Mom, Willem G Onderwaater, Marcel J Rost, Maciej Jankowski, Sabine Wenzel, Leon Jacobse, Paul F A Alkemade, Vincent Vandalon, Matthijs A van Spronsen, Matthijs van Weeren, Bert Crama, Peter van der Tuijn, Roberto Felici, Wilhelmus M M Kessels, Francesco Carlà, Joost W M Frenken, Irene M N Groot
A combined X-ray and scanning tunneling microscopy (STM) instrument is presented that enables the local detection of X-ray absorption on surfaces in a gas environment. To suppress the collection of ion currents generated in the gas phase, coaxially shielded STM tips were used. The conductive outer shield of the coaxial tips can be biased to deflect ions away from the tip core. When tunneling, the X-ray-induced current is separated from the regular, 'topographic' tunneling current using a novel high-speed separation scheme...
July 14, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28734219/acute-toxicity-of-cadmium-in-anisops-sardeus-heteroptera-notonectidae-effects-on-adult-and-nymphal-survival-and-swimming-behavior
#18
Chongtham Memtombi Chanu, Susmita Gupta, Abhik Gupta
Adult female and male, and final instar nymph of Anisops sardeus (Heteroptera: Notonectidae) were exposed to graded concentrations of cadmium in 96h static-with-renewal acute toxicity tests, which were conducted in dry (March) and wet (May-June) seasons. The 96h LC50 values for instar V nymph, adult female and male were found to be 0.9, 0.59 and 0.51mgL(-1) Cd, respectively, in wet season, while these were 26.7 and 20.2mgL(-1) Cd for adult female and male, respectively, in dry season. Adult males were most sensitive to Cd, followed by females in both seasons, while highest tolerance in wet season was observed in instar V nymph...
July 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28734173/reliability-and-validity-of-the-tilburg-frailty-indicator-tfi-among-chinese-community-dwelling-older-people
#19
Lijuan Dong, Na Liu, Xiaoyu Tian, Xiaoxia Qiao, Robbert J J Gobbens, Robert L Kane, Cuili Wang
OBJECTIVE: To translate the Tilburg Frailty Indicator (TFI) into Chinese and assess its reliability and validity. METHODS: A sample of 917 community-dwelling older people, aged ≥60 years, in a Chinese city was included between August 2015 and March 2016. Construct validity was assessed using alternative measures corresponding to the TFI items, including self-rated health status (SRH), unintentional weight loss, walking speed, timed-up-and-go tests (TUGT), making telephone calls, grip strength, exhaustion, Short Portable Mental Status Questionnaire (SPMSQ), Geriatric Depression scale (GDS-15), emotional role, Adaptability Partnership Growth Affection and Resolve scale (APGAR) and Social Support Rating Scale (SSRS)...
July 15, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28734081/whitening-dependent-changes-of-fluorescence-of-extracted-human-teeth
#20
Natalie Pereira Sanchez, Aleksandar Aleksic, Miroslav Dramicanin, Rade D Paravina
OBJECTIVE: To evaluate in vitro the fluorescence properties of extracted human teeth whitened with 40% hydrogen peroxide. MATERIALS AND METHODS: A total of 28 extracted human teeth were pumiced for 1 minute using a low-speed dental handpiece and a disposable rubber cup. Pre-whitening fluorescence measurements (T0), maximum excitation (Exmax ), maximum emission (Emmax ), and maximum intensity (Imax 10(8) ), were performed using a spectrofluorometer. After T0 measurements, the teeth were whitened using the in-office method with 40% hydrogen peroxide, three times for 20 minutes...
July 22, 2017: Journal of Esthetic and Restorative Dentistry
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