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https://www.readbyqxmd.com/read/28429545/do-the-benefits-of-using-calcitriol-and-other-vitamin-d-receptor-activators-in-patients-with-chronic-kidney-disease-outweigh-the-harms
#1
Nigel D Toussaint, Matthew J Damasiewicz
The primary indication for administration of calcitriol or other vitamin D receptor activators (VDRA) in chronic kidney disease (CKD) is secondary hyperparathyroidism (SHPT). Prevention and treatment of SHPT appears important, as imbalances in mineral metabolism are associated with renal osteodystrophy, and higher parathyroid hormone (PTH) levels are associated with increased rates of mortality and morbidity in CKD patients. There is, however, a lack of controlled trial data that show lowering PTH with calcitriol/VDRA equates to improved clinical outcomes...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429501/formation-of-macromolecules-in-wheat-gluten-starch-mixtures-during-twin-screw-extrusion-effect-of-different-additives
#2
Kaiqiang Wang, Cheng Li, Bingzhi Wang, Wen Yang, Shuizhong Luo, Yanyan Zhao, Shaotong Jiang, Dongdong Mu, Zhi Zheng
BACKGROUND: Wheat gluten comprises a good quality and inexpensive vegetable protein with an ideal amino acid composition. To expand the potential application of wheat gluten in the food industry, the effect of different additives on the physicochemical and structural properties of wheat gluten/starch mixtures during twin-screw extrusion was investigated. RESULTS: Macromolecules were observed to form in wheat gluten/starch mixtures during twin-screw extrusion, which may be ascribed to the formation of new disulfide bonds and non-covalent interactions, as well as Maillard reaction products...
April 21, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28428653/doppler-velocimetry-of-the-orbital-arteries-in-patients-with-sickle-cell-anemia-relationship-with-biomarkers-of-hemolysis
#3
Thiago de Oliveira Ferrão, Paulo Ricardo Martins-Filho, Cleverton Aragão, Marlyson Santana, Allan Nascimento, Thayane Cardoso, Rosana Cipolotti
OBJECTIVE: To investigate orbital vascular resistance by Doppler velocimetry in patients with steady-state sickle cell anemia, as well as to characterize its relationship with biomarkers of hemolysis. MATERIALS AND METHODS: This was a cross-sectional study of two groups: 71 outpatients with sickle cell anemia; and 32 age- and gendermatched, healthy subjects (control group). All participants underwent Doppler velocimetry of the orbital arteries and laboratory tests...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28428096/developing-the-pedsvalue-modules-a-national-pediatric-high-value-care-curriculum
#4
Carolyn S Avery, Jimmy Beck, Ryan Padrez, Lauren LaRue Walker, Lisa E Herrmann, Suzanne Woods, Alan R Schroeder, Adam Schickedanz
No abstract text is available yet for this article.
April 18, 2017: Academic Pediatrics
https://www.readbyqxmd.com/read/28427465/the-use-of-evidence-in-english-local-public-health-decision-making-a-systematic-scoping-review
#5
REVIEW
Dylan Kneale, Antonio Rojas-García, Rosalind Raine, James Thomas
BACKGROUND: Public health decision-making structures in England have transformed since the implementation of reforms in 2013, with responsibility for public health services and planning having shifted from the "health" boundary to local authority (LA; local government) control. This transformation may have interrupted flows of research evidence use in decision-making and introduced a new political element to public health decision-making. For generators of research evidence, understanding and responding to this new landscape and decision-makers' evidence needs is essential...
April 20, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28427341/reactive-oxygen-species-mediate-tapetal-programmed-cell-death-in-tobacco-and-tomato
#6
Shi-Xia Yu, Qiang-Nan Feng, Hong-Tao Xie, Sha Li, Yan Zhang
BACKGROUND: Hybrid vigor is highly valued in the agricultural industry. Male sterility is an important trait for crop breeding. Pollen development is under strict control of both gametophytic and sporophytic factors, and defects in this process can result in male sterility. Both in the dicot Arabidopsis and in the moncot rice, proper timing of programmed cell death (PCD) in the tapetum ensures pollen development. Dynamic ROS levels have been reported to control tapetal PCD, and thus pollen development, in Arabidopsis and rice...
April 20, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28426196/chiral-inorganic-nanostructures
#7
Wei Ma, Liguang Xu, André F de Moura, Xiaoling Wu, Hua Kuang, Chuanlai Xu, Nicholas A Kotov
The field of chiral inorganic nanostructures is rapidly expanding. It started from the observation of strong circular dichroism during the synthesis of simple nanoparticles (NPs) and their assemblies mediated by biomolecules and expanded to sophisticated synthetic protocols involving nanostructures from metals, semiconductors, ceramics, and nanocarbons. Besides the well-established chirality transfer from bioorganic molecules, other methods to impart handedness to nanoscale matter specific to inorganic materials were discovered, including three-dimentional lithography, multiphoton chirality transfer, polarization effects in nanoscale assemblies, and others...
April 20, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28425886/an-overview-of-teaching-communication-of-bad-news-in-medical-school-should-a-lecture-be-adequate-to-address-the-topic
#8
Filipe Coutinho, Anisha Ramessur
INTRODUCTION: Delivering bad news is very common in medical daily practice. Several studies have shown a lack of effective communication skills amongst medical students, particularly concerning how to deliver bad news. The SPIKES protocol allows communicating bad news in a 6-step method. The aim of this study is to investigate the perspective of students related to this subject. MATERIAL AND METHODS: A 45 minute lecture "Breaking Bad News" was given to 160 students in the fifth and sixth years of the Medicine course, using the SPIKES' protocol training...
December 30, 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28423943/high-value-added-lipids-produced-by-microorganisms-a-potential-use-of-sugarcane-vinasse
#9
Bruna Soares Fernandes, João Paulo Fernandes Vieira, Fabiano Jares Contesini, Paulo Eduardo Mantelatto, Marcelo Zaiat, José Geraldo da Cruz Pradella
This review aims to present an innovative concept of high value added lipids produced by heterotrophic microorganisms, bacteria and fungi, using carbon sources, such as sugars, acids and alcohols that could come from sugarcane vinasse, which is the main byproduct from ethanol production that is released in the distillation step. Vinasse is a rich carbon source and low-cost feedstock produced in large amounts from ethanol production. In 2019, the Brazilian Ministry of Agriculture, Livestock and Food Supply estimates that growth of ethanol domestic consumption will be 58...
April 20, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28421461/the-role-of-tumor-board-conferences-in-neuro-oncology-a-nationwide-provider-survey
#10
REVIEW
James Snyder, Lonni Schultz, Tobias Walbert
The tumor board or multidisciplinary cancer meeting (MCM) is the foundation of high value multidisciplinary oncology care, coordinating teams of specialists. Little is known on how these meetings are implemented in Neuro-oncology. Benefits of MCMs include coordination, direction for complicated cases, education, and a forum for communication, emerging technology, and clinical trials. This study identifies participation and utilization of neuro-oncology MCMs. A cross-sectional descriptive survey was dispersed through an internet questionnaire...
April 18, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28419060/relationship-of-hospital-costs-with-mortality-in-pediatric-critical-care-a-multi-institutional-analysis
#11
Punkaj Gupta, Mallikarjuna Rettiganti
OBJECTIVE: With increasing emphasis on high "value" care, we designed this study to evaluate the relationship between hospital costs and patient outcomes in pediatric critical care. DESIGN: Post hoc analysis of data from an existing administrative national database, Pediatric Health Information Systems. Multivariable mixed effects logistic regression models were fitted to evaluate association of hospital cost tertiles with odds of mortality after adjusting for patient and center characteristics...
April 17, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28417376/identification-of-genes-involved-in-the-degradation-of-lignocellulose-using-comparative-transcriptomics
#12
Robert J Gruninger, Ian Reid, Robert J Forster, Adrian Tsang, Tim A McAllister
Lignocellulosic biomass represents an abundant, renewable resource that can be used to produce biofuels, low-cost livestock feed, and high-value chemicals. The potential of this resource has led to intensive research efforts to develop cost effective methods to breakdown lignocellulose. The efficiency with which the anaerobic fungi (phylum Neocallimastigomycota) degrade plant biomass is well recognized and in recent years has received renewed interest. Transcriptomics has been used to identify enzymes that are expressed by these fungi and are involved in the degradation of a range of lignocellulose feedstocks...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28417211/helminth-diversity-in-synanthropic-rodents-from-an-urban-ecosystem
#13
Diego Hancke, Olga Virginia Suárez
Richness and diversity of parasites depend on a set of interrelated factors related to the characteristics of the host, the environment and the parasites itself. In the City of Buenos Aires, rodent communities vary according to landscape structure. The goal of this paper was to study the variations of helminth richness and diversity among invasive rodent species in different landscape units of the City of Buenos Aires. 73% of the rodents were parasitized with at least one of the 10 identified helminth species...
April 17, 2017: EcoHealth
https://www.readbyqxmd.com/read/28416873/collagen-extraction-from-mussel-byssus-a-new-marine-collagen-source-with-physicochemical-properties-of-industrial-interest
#14
F Rodríguez, L Morán, G González, E Troncoso, R N Zúñiga
Mussel byssus is a by-product of mussel production and is a potential source of collagen. The goal of this study was to extract collagen from the byssus of Chilean mussel using an enzymatic method and characterize it. A pepsin-aided extraction method was employed where first an enzymatic hydrolysis at two pepsin/substrate ratios (1:50 or 4:50) and times (4 or 24 h) was done. Extraction was conducted at 80 °C for 24 h, in a 0.5 N acetic acid solution. All samples were analyzed for collagen content, amino acid profile, turbidity, viscosity, solubility, denaturation temperature and surface tension...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28416865/folic-acid-content-and-antioxidant-activity-of-different-types-of-beers-available-in-hungarian-retail
#15
Dániel Koren, Csaba Orbán, Nóra Galló, Szilárd Kun, Beáta Vecseri-Hegyes, Gabriella Kun-Farkas
In this study 40 Hungarian retail beers were evaluated for folic acid content, antioxidant profile and physicochemical parameters. The physicochemical parameters, folic acid content and antioxidant activity of alcohol-free beers were the lowest. Folic acid content of beers aged with sour cherries showed high values, more than 0.4 mg/l and an alcohol-free beer-based mixed drink made with lemon juice contained more than 0.2 mg/l of folic acid. Dark beers and beers aged with sour cherries had the highest antioxidant activity probably owing to their high extract content, components released from the fruits and special malts...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28414905/application-of-an-acyl-coa-ligase-from-streptomyces-aizunensis-for-lactam-biosynthesis
#16
Jingwei Zhang, Jesus F Barajas, Mehmet Burdu, George Wang, Edward E K Baidoo, Jay D Keasling
ε-caprolactam and δ-valerolactam are important commodity chemicals used in the manufacture of nylons, with millions of tons produced annually. Biological production of these highly valued chemicals has been limited due to a lack of enzymes that cyclize ω-amino fatty acid precursors to corresponding lactams under ambient conditions. In this study, we demonstrated production of these chemicals using ORF26, an acyl-CoA ligase involved in the biosynthesis of ECO-02301 in Streptomyces aizunensis. This enzyme has a broad substrate spectrum and can cyclize 4-aminobutyric acid into γ-butyrolactam, 5-aminovaleric acid into δ-valerolactam and 6-aminocaproic acid into ε-caprolactam...
April 17, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28414710/using-the-pimeloyl-coa-synthetase-adenylation-fold-to-synthesize-fatty-acid-thioesters
#17
Menglu Wang, Lucile Moynié, Peter J Harrison, Van Kelly, Andrew Piper, James H Naismith, Dominic J Campopiano
Biotin is an essential vitamin in plants and mammals, functioning as the carbon dioxide carrier within central lipid metabolism. Bacterial pimeloyl-CoA synthetase (BioW) acts as a highly specific substrate-selection gate, ensuring the integrity of the carbon chain in biotin synthesis. BioW catalyzes the condensation of pimelic acid (C7 dicarboxylic acid) with CoASH in an ATP-dependent manner to form pimeloyl-CoA, the first dedicated biotin building block. Multiple structures of Bacillus subtilis BioW together capture all three substrates, as well as the intermediate pimeloyl-adenylate and product pyrophosphate (PPi), indicating that the enzyme uses an internal ruler to select the correct dicarboxylic acid substrate...
April 17, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28414336/study-of-propagation-of-vortex-beams-in-aerosol-optical-medium
#18
Alexey P Porfirev, Mikhail S Kirilenko, Svetlana N Khonina, Roman V Skidanov, Victor A Soifer
A theoretical and experimental study of the propagation of vortex laser beams in a random aerosol medium is presented. The theoretical study is based on the extended Huygens-Fresnel principle with the generation of a random field, using the fast Fourier transform. The simulation shows that the stability of vortex beams to fluctuations of an optical medium falls with rising order of optical vortices. Moreover, a coherence length (radius) of the random medium is of great importance. The coherence radius extension affects adversely the conservation of a beam structure in the random medium...
April 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/28413445/valorization-of-untreated-rice-bran-towards-bioflocculant-using-a-lignocellulose-degrading-strain-and-its-use-in-microalgal-biomass-harvest
#19
Cong Liu, Yan Hao, Jihong Jiang, Weijie Liu
BACKGROUND: Microalgae are currently considered as a promising feedstock for the production of biofuels and high-value products. However, the efficient harvest of microalgal biomasses from their culture broth is a major challenge. The harvesting of algal biomass by flocculation combined with gravity sedimentation is more convenient and cost-effective than traditional methods such as centrifugation and filtration. Compared to inorganic and chemically synthetic flocculants, bioflocculants are a suitable choice for microalgal harvest due to their biodegradable and nontoxic properties...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28412340/levan-promotes-antiproliferative-and-pro-apoptotic-effects-in-mcf-7-breast-cancer-cells-mediated-by-oxidative-stress
#20
Eveline A I F Queiroz, Zuleica B Fortes, Mário A A da Cunha, Hande Kazak Sarilmiser, Aneli M Barbosa, Ebru Toksoy Öner, Robert F H Dekker, Neelam Khaper
Exopolysaccharides are high-valued bio-products produced by various microbial species and have been described to possess biological response modifying activities. These bio-products have been effective as therapeutic agents in various human disease conditions. The objective of this study was to examine the effects of levan (a (2→6)-β-D-fructan) produced on sucrose by the halophilic bacterium, Halomonas smyrnensis AAD6(T), in human breast cancer MCF-7 cells. MCF-7 cells were exposed to levan for 24 and 48h...
April 12, 2017: International Journal of Biological Macromolecules
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