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https://www.readbyqxmd.com/read/28340261/effect-of-a-high-concentrate-diet-on-milk-components-and-mammary-health-in-holstein-dairy-cows
#1
Z L Xie, J Zhang, D M Zhang, J F Li, Y H Lin
In order to evaluate the milk yield, milk quality, and health of dairy cows fed a high-concentrate (HC) diet, eight lactating Holstein dairy cattle were randomly assigned to HC or low-concentrate (LC) diet groups and fed for 50 days, and the auto-control studying before and after treatment with the two diets was used. During the experiment, plasma and milk samples were collected and measured. With regard to milk component, HC feeding led to higher milk production (P < 0.05), but significantly lower milk protein percentage (P < 0...
March 22, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28339677/development-of-a-food-allergy-knowledge-test-for-parents
#2
Amy L Hahn, Lynnda M Dahlquist, Jessica L Hoehn, Mary Elizabeth Bollinger
Objective : To create a measure of food allergy (FA) knowledge for parents of children with FA. The food allergy knowledge test (FAKT) was developed following rigorous test-construction guidelines. The preliminary 110-item pool content was developed in consultation with FA experts. After cognitive interviews and revisions, an 88-item preliminary version was administered to 370 parents of children with FA who were recruited online and from an allergy clinic. After item difficulty, discrimination, item-scale correlations analyses, and assessment of internal consistency, a revised 57-item version was administered to a new clinic-based sample (77 parents)...
February 19, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/28339656/development-of-a-real-time-wave-field-reconstruction-tem-system-i-incorporation-of-an-auto-focus-tracking-system
#3
Takahiro Tamura, Yoshihide Kimura, Yoshizo Takai
We have developed a real-time wave field reconstruction transmission electron microscope system that enables auto focus tracking at a video rate. In the developed system, a high-speed image calculation technique using a graphical processing unit was incorporated along with two techniques facilitating high-speed focus control using high-voltage modulation and weighted image integration using exposure time control. By utilizing these techniques, the sample drift induced in the Z-axis direction can be measured and automatically corrected for every 1/30 of a second...
February 18, 2017: Microscopy
https://www.readbyqxmd.com/read/28339103/iterative-dataset-optimization-in-automated-planning-implementation-for-breast-and-rectal-cancer-radiotherapy
#4
Jiawei Fan, Jiazhou Wang, Zhen Zhang, Weigang Hu
PURPOSE: To develop a new automated treatment planning solution for breast and rectal cancer radiotherapy. METHODS: The automated treatment planning solution developed in this study includes selection of the iterative optimized training dataset, dose volume histogram (DVH) prediction for the organs at risk (OARs), and automatic generation of clinically acceptable treatment plans. The iterative optimized training dataset is selected by an iterative optimization from 40 treatment plans for left-breast and rectal cancer patients who received radiation therapy...
March 24, 2017: Medical Physics
https://www.readbyqxmd.com/read/28339076/an-activatable-aptamer-based-fluorescence-probe-for-the-detection-of-hepg2-cells
#5
Zongqiang Lai, Juntao Tan, Ruirong Wan, Jie Tan, Zhenghua Zhang, Zixi Hu, Jieping Li, Wei Yang, Yiwei Wang, Yafeng Jiang, Jian He, Nuo Yang, Xiaoling Lu, Yongxiang Zhao
It is significant to develop a probe with sensitivity and specificity for the detection of cancer cells. The present study aimed to develop an 'activatable' aptamer-based fluorescence probe (AAFP) to detect cancer cells and frozen cancer tissue. This AAFP consisted of two fragments: aptamer TLS11a that targets HepG2 cells, and two short extending complementary DNA sequences with a 5'- and 3'-terminus that make the aptamer in hairpin structure a capable quencher to fluorophore. The ability of the AAFP to bind specifically to cancer cells was assessed using flow cytometry, fluorescence spectroscopy and fluorescence microscopy...
March 24, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28338219/human-orf-complicated-by-epidermolysis-bullosa-acquisita
#6
E Zuelgaray, C Salle de Chou, J Gottlieb, M Battistella, M D Vignon-Pennamen, M Bagot, F Guibal, J D Bouaziz
Orf is a DNA parapoxvirus transmitted to humans by contact with infected goats and sheep. Many complications have been reported after Orf infection including erythema multiforme. A few cases of auto-immune bullous dermatosis complicating Orf disease have been reported to date, usually characterized by tense blisters eruptions with or without mucosal involvement, linear deposition of C3, IgG and/or IgA along the basement membrane and negativity of indirect immunofluorescence analysis and ELISA assays (performed in 4 of 11 reported cases) against target antigens of bullous pemphigoid, mucous membrane pemphigoid or epidermolysis bullosa acquisita, except one case of mucosal pemphigoid with antilaminin-332 antibodies...
March 24, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28337675/an-ontology-based-search-engine-for-digital-reconstructions-of-neuronal-morphology
#7
Sridevi Polavaram, Giorgio A Ascoli
Neuronal morphology is extremely diverse across and within animal species, developmental stages, brain regions, and cell types. This diversity is functionally important because neuronal structure strongly affects synaptic integration, spiking dynamics, and network connectivity. Digital reconstructions of axonal and dendritic arbors are thus essential to quantify and model information processing in the nervous system. NeuroMorpho.Org is an established repository containing tens of thousands of digitally reconstructed neurons shared by several hundred laboratories worldwide...
March 23, 2017: Brain Informatics
https://www.readbyqxmd.com/read/28336130/organizers-and-activators-cytosolic-nox-proteins-impacting-on-vascular-function
#8
REVIEW
Katrin Schröder, Norbert Weissmann, Ralf P Brandes
NADPH oxidases of the Nox family are important enzymatic sources of reactive oxygen species (ROS) in the cardiovascular system. Of the 7 members of the Nox family, at least three depend for their activation on specific cytosolic proteins. These are p47phox and its homologue NoxO1 and p67phox and its homologue NoxA1. Also the Rho-GTPase Rac is important but as this protein has many additional functions, it will not be covered here. The Nox1 enzyme is preferentially activated by the combination of NoxO1 with NoxA1, whereas Nox2 gains highest activity with p47phox together with p67phox...
March 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28336096/multigenerational-effects-of-two-glucocorticoids-prednisolone-and-dexamethasone-on-life-history-parameters-of-crustacean-ceriodaphnia-dubia-cladocera
#9
Navdeep Bal, Anupama Kumar, Jun Du, Dayanthi Nugegoda
Synthetic glucocorticoids (GCs) such as dexamethasone (DEX) and prednisolone (PDS) have been used since the 1940s to cure inflammatory and auto-immune disorders. Their use has been linked to a host of deleterious effects in aquatic ecosystems such as osteoporosis in vertebrates, developmental impairments in molluscs and reduced fecundity and growth in cladocerans. Apart from these handful of studies, the effects of GCs on aquatic biota are largely unknown. The present study is a first of its kind aiming to assess the multi-generational exposure effects of DEX and PDS on the life history parameters of Ceriodaphnia dubia (C...
March 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28335568/an-electricity-price-aware-open-source-smart-socket-for-the-internet-of-energy
#10
Óscar Blanco-Novoa, Tiago M Fernández-Caramés, Paula Fraga-Lamas, Luis Castedo
The Internet of Energy (IoE) represents a novel paradigm where electrical power systems work cooperatively with smart devices to increase the visibility of energy consumption and create safer, cleaner and sustainable energy systems. The implementation of IoE services involves the use of multiple components, like embedded systems, power electronics or sensors, which are an essential part of the infrastructure dedicated to the generation and distribution energy and the one required by the final consumer. This article focuses on the latter and presents a smart socket system that collects the information about energy price and makes use of sensors and actuators to optimize home energy consumption according to the user preferences...
March 21, 2017: Sensors
https://www.readbyqxmd.com/read/28335023/qbd-driven-development-and-validation-of-liquid-chromatography-tandem-mass-spectrometric-method-for-the-quantitation-of-sildenafil-in-human-plasma
#11
M Saquib Hasnain, Shaukat Ali Ansari, Shireen Rao, Mohammad Tabish, Mukul Singh, Mohammad Syafiq Abdullah, Mohammed Tahir Ansari
The present work was employing the Quality by Design approach for the development and validation of a LC-MS-MS method to support the clinical advancement in determination of sildenafil in human plasma using lorazepam as an internal standard. Sample preparation involved solid phase extraction and calibration range observed between 3 and 1,700 ng/mL. The method was systematically optimized by employing Box-Behnken design and used mobile phase flow rate, pH and composition of mobile phase as the critical factors, and assessing the design for retention time and peak area as the responses...
February 27, 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28334002/improving-hybrid-how-to-best-combine-indirect-and-direct-encoding-in-evolutionary-algorithms
#12
Lucas Helms, Jeff Clune
Many challenging engineering problems are regular, meaning solutions to one part of a problem can be reused to solve other parts. Evolutionary algorithms with indirect encoding perform better on regular problems because they reuse genomic information to create regular phenotypes. However, on problems that are mostly regular, but contain some irregularities, which describes most real-world problems, indirect encodings struggle to handle the irregularities, hurting performance. Direct encodings are better at producing irregular phenotypes, but cannot exploit regularity...
2017: PloS One
https://www.readbyqxmd.com/read/28333764/determinants-of-rotavirus-transmission-a-lag-non-linear-time-series-analysis
#13
Rolina D van Gaalen, Jan van de Kassteele, Susan J M Hahné, Patricia Bruijning-Verhagen, Jacco Wallinga
Rotavirus is a common viral infection among young children. As in many countries, the infection dynamics of rotavirus in the Netherlands are characterized by an annual winter peak, which was notably low in 2014. Previous work suggested an association between weather factors and both rotavirus transmission and incidence. From epidemic theory, we know that the proportion of susceptible individuals can affect disease transmission. We investigated how these factors are associated with rotavirus transmission in the Netherlands, and their impact on rotavirus transmission in 2014...
March 22, 2017: Epidemiology
https://www.readbyqxmd.com/read/28332978/structural-reorganization-of-the-chromatin-remodeling-enzyme-chd1-upon-engagement-with-nucleosomes
#14
Ramasubramanian Sundaramoorthy, Amanda L Hughes, Vijender Singh, Nicola Wiechens, Daniel P Ryan, Hassane El-Mkami, Maxim Petoukhov, Dmitri I Svergun, Barbara Treutlein, Salina Quack, Monika Fischer, Jens Michaelis, Bettina Böttcher, David G Norman, Tom Owen-Hughes
The yeast Chd1 protein acts to position nucleosomes across genomes. Here we model the structure of the Chd1 protein in solution and when bound to nucleosomes. In the apo state the DNA binding domain contacts the edge of the nucleosome while in the presence of the non-hydrolyzable ATP analog, ADP-beryllium fluoride, we observe additional interactions between the ATPase domain and the adjacent DNA gyre 1.5 helical turns from the dyad axis of symmetry. Binding in this conformation involves unravelling the outer turn of nucleosomal DNA and requires substantial reorientation of the DNA binding domain with respect to the ATPase domains...
March 23, 2017: ELife
https://www.readbyqxmd.com/read/28332030/molecular-cloning-expression-and-characterization-of-pectin-methylesterase-ctpme-from-clostridium-thermocellum
#15
Vikky Rajulapati, Arun Goyal
Many phytopathogenic micro-organisms such as bacteria and fungi produce pectin methylesterases (PME) during plant invasion. Plants and insects also produce PME to degrade plant cell wall. In the present study, a thermostable pectin methylesterase (CtPME) from Clostridium thermocellum belonging to family 8 carbohydrate esterase (CE8) was cloned, expressed and purified. The amino acid sequence of CtPME exhibited similarity with pectin methylesterase from Erwinia chrysanthemi with 38% identity. The gene encoding CtPME was cloned into pET28a(+) vector and expressed using Escherichia coli BL21(DE3) cells...
March 22, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/28330987/architecture-and-mechanism-of-the-central-gear-in-an-ancient-molecular-timer
#16
REVIEW
Martin Egli
Molecular clocks are the product of natural selection in organisms from bacteria to human and their appearance early in evolution such as in the prokaryotic cyanobacterium Synechococcus elongatus suggests that these timers served a crucial role in genetic fitness. Thus, a clock allows cyanobacteria relying on photosynthesis and nitrogen fixation to temporally space the two processes and avoid exposure of nitrogenase carrying out fixation to high levels of oxygen produced during photosynthesis. Fascinating properties of molecular clocks are the long time constant, their precision and temperature compensation...
March 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28330784/vascular-endothelial-growth-factor-vegf-and-vegf-receptor-inhibitors-in-the-treatment-of-renal-cell-carcinomas
#17
REVIEW
Robert Roskoski
One Von Hippel-Lindau (VHL) tumor suppressor gene is lost in most renal cell carcinomas while the nondeleted allele exhibits hypermethylation-induced inactivation or inactivating somatic mutations. As a result of these genetic modifications, there is an increased production of VEGF-A and pro-angiogenic growth factors in this disorder. The important role of angiogenesis in the pathogenesis of renal cell carcinomas and other tumors has focused the attention of investigators on the biology of VEGFs and VEGFR1-3 and to the development of inhibitors of the intricate and multifaceted angiogenic pathways...
March 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28330512/evaluating-risk-factors-for-clostridium-difficile-infection-in-stem-cell-transplant-recipients-a-national-study
#18
Nishi N Shah, William McClellan, Christopher R Flowers, Sagar Lonial, Hannah Khoury, Edmund K Waller, Amelia Langston, Ajay K Nooka
OBJECTIVE Large-scale studies evaluating risk factors for Clostridium difficile infection (CDI), a leading cause of infectious diarrhea among patients undergoing stem cell transplantation (SCT), are lacking. We have evaluated risk factors for CDI among both autologous SCT (auto-SCT), and allogeneic SCT (allo-SCT) recipients using the National Inpatient Sample (NIS) database provided by the Healthcare Cost and Utilization Project (HCUP). METHODS We used patient data obtained from the NIS database for all adult patients admitted for auto- and allo-SCTs from January 2001 to December 2010...
March 23, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28330109/biomass-production-and-identification-of-suitable-harvesting-technique-for-chlorella-sp-mj-11-11-and-synechocystis-pcc-6803
#19
Amrit Lal, Debabrata Das
Microalgae that can grow fast and convert solar energy into chemical energy efficiently are being considered as a promising feedstock of renewable biofuel. Mass production of microalgal oil faces a number of technical barriers that make the current production of biodiesel economically unfeasible. Small size (≈1-20 μm) and negatively charged surface of the microalgal cells pose difficulties in the process of harvesting. This leads to significant increase in the overall cost of biomass production. The present study explored different methods and conditions for harvesting of Chlorella sp...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328592/status-asthmaticus-and-central-herniation-a-case-for-multidisciplinary-critical-care
#20
Joelle B Karlik, Tristan Stani, Stephanie Nonas, Aclan Dogan, Ansgar Brambrink
A 24-year-old woman with history of asthma was intubated emergently for acute status asthmaticus triggered by acute respiratory syncytial virus infection and treated with permissive hypercapnia. Her ventilation was complicated by auto-positive end-expiratory pressure and elevated peak airway, plateau, and central venous pressures. On hospital day 2, she was noted to have anisocoria. Imaging showed diffuse cerebral edema with central herniation. Difficult ventilation and hypercapnia directly contributed to her severe cerebral edema...
March 15, 2017: A & A Case Reports
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