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https://www.readbyqxmd.com/read/28231409/lip-and-tooth-injuries-at-public-swimming-pools-in-austria
#1
Katharina Lechner, Thomas Connert, Sebastian Kühl, Andreas Filippi
BACKGROUND/AIM: There is an increased risk of orofacial injuries in swimming pool facilities. Nevertheless, only a few studies have addressed this issue. The aim of this study was to identify the frequency of lip and tooth injuries at public swimming pools in Austria. A further aim was to examine which gender and age groups were affected, where and why these injuries occurred, and whether pool attendants had sufficient knowledge of dental first aid measures. MATERIAL AND METHODS: A total of 764 pool attendants in Austria were contacted by telephone and 689 participated in the study (90...
February 23, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28220494/mortality-outcomes-in-patients-transfused-with-fresher-versus-older-red-blood-cells-a-meta-analysis
#2
C Chai-Adisaksopha, P E Alexander, G Guyatt, M A Crowther, N M Heddle, P J Devereaux, M Ellis, D Roxby, D I Sessler, J W Eikelboom
BACKGROUND: Among transfused patients, the effect of the duration of red blood cell storage on mortality remains unclear. This study aims to compare the mortality of patients who were transfused with fresher versus older red blood cells. METHODS: We performed an updated systematic search in the CENTRAL, MEDLINE, EMBASE and CINAHL databases, from January 2015 to October 2016. RCTs of hospitalized patients of any age comparing transfusion of fresher versus older red blood cells were eligible...
February 20, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28216105/-increasing-the-carbohydrate-storage-capacity-of-plants-by-engineering-a-glycogen-like-polymer-pool-in-the-cytosol
#3
Simona Eicke, David Seung, Barbara Egli, Emanuel A Devers, Sebastian Streb
Global demand for higher crop yields and for more efficient utilization of agricultural products will grow over the next decades. Here, we present a new concept for boosting the carbohydrate content of plants, by channeling photosynthetically fixed carbon into a newly engineered glucose polymer pool. We transiently expressed the starch/glycogen synthases from either Saccharomyces cerevisiae or Cyanidioschyzon merolae, together with the starch branching enzyme from C. merolae, in the cytosol of Nicotiana benthamiana leaves...
February 16, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28213086/comparison-of-protocols-for-the-analysis-of-type-1-porcine-reproductive-and-respiratory-syndrome-virus-by-rt-pcr-using-oral-fluids
#4
Elisa Gibert, Gerard Martín-Valls, Enric Mateu
The detection of porcine reproductive and respiratory syndrome virus (PRRSV) in oral fluids (OF) by quantitative real-time polymerase chain reaction (qRT-PCR) is gaining increasing popularity. However, the different steps leading to a result have not been extensively evaluated. The aim of the present study was to examine the effect on the performance of qRT-PCR with different sampling materials, conditions of storage of the OF, the need for centrifuging OF, as well as to compare RNA extraction methods and PCR mixes...
February 14, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28198591/interpenetrating-conducting-hydrogel-materials-for-neural-interfacing-electrodes
#5
Josef Goding, Aaron Gilmour, Penny Martens, Laura Poole-Warren, Rylie Green
Conducting hydrogels (CHs) are an emerging technology in the field of medical electrodes and brain-machine interfaces. The greatest challenge to the fabrication of CH electrodes is the hybridization of dissimilar polymers (conductive polymer and hydrogel) to ensure the formation of interpenetrating polymer networks (IPN) required to achieve both soft and electroactive materials. A new hydrogel system is developed that enables tailored placement of covalently immobilized dopant groups within the hydrogel matrix...
February 15, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28192948/c3n4-nanosheet-modified-microwell-array-with-enhanced-electrochemiluminescence-for-total-analysis-of-cholesterol-at-single-cells
#6
Jingjing Xu, Depeng Jiang, Yanling Qin, Juan Xia, Dechen Jiang, Hong-Yuan Chen
Here, a g-C3N4 nanosheet modified microwell array providing enhanced electrochemiluminescence (ECL) and better visible sensitivity was prepared to simultaneously analyze total (membrane and intracellular) cholesterol at single cells. The detection limit for ECL visualization of hydrogen peroxide at microwell array was improved to be 500 nM that guaranteed the detection of low concentration cholesterol at single cells in parallel. To achieve single cell cholesterol analysis, the individual cells cultured at the microwell array were exposed to cholesterol oxidase generating hydrogen peroxide for luminescence analysis of membrane cholesterol, and then treated with triton X-100, cholesterol esterase, and cholesterol oxidase to produce hydrogen peroxide from intracellular cholesterol for luminescence determination...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191979/non-linear-effects-in-multicomponent-supramolecular-hydrogels
#7
Emily Draper, Matthew Wallace, Ralf Schweins, Robert J Poole, Dave J Adams
Multicomponent low molecular weight gels are useful for a range of applications. However, when mixing two components, both of which can independently form a gel, there are many potential scenarios. There is a limited understanding as to how to control and direct the assembly. Here, we focus on a pH-triggered two component system. At high pH, colloidal structures are formed and there is a degree of mixing of the two gelators. As the pH is decreased, there is a complex situation, where one gelator directs the assembly in a "sergeants and soldiers" manner...
February 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28166864/flow-cytometry-analysis-of-platelet-populations-usefulness-for-monitoring-the-storage-lesion-in-pooled-buffy-coat-platelet-concentrates
#8
Dušan Vučetić, Vesna Ilić, Danilo Vojvodić, Vesna Subota, Milena Todorović, Bela Balint
BACKGROUND: Early detection of the platelet storage lesion is still a challenge in transfusion practice. Using flow cytometry, we evaluated the appearance of the storage lesion, based on the expression of platelet activation markers, in total platelets and platelet populations. MATERIALS AND METHODS: Buffy-coat-derived platelet concentrates were stored under standard conditions for 5 days. The expression of activation antigens CD42b, CD36, CD62p and phosphatidylserine on total platelets and populations of small, medium-sized and large platelets was analysed by flow cytometry on storage days 1, 3 and 5...
December 21, 2016: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28160641/contribution-of-glomalin-to-dissolve-organic-carbon-under-different-land-uses-and-seasonality-in-dry-tropics
#9
Ashutosh Kumar Singh, Apurva Rai, Vivek Pandey, Nandita Singh
Glomalin related soil protein (GRSP) is a hydrophobic glycoprotein that is significant for soil organic carbon (SOC) persistence and sequestration, owing to its large contribution to SOC pool and long turnover time. However, the contribution of GRSP to dissolve OC (DOC) leach from soil is not yet comprehensively explored, though it could have implication in understanding SOC dynamics. We, therefore, aim to measure the contribution of GRSP to DOC, in a range of land uses and climatic seasons in the dry tropical ecosystem...
February 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28157285/boreal-forests-sequester-large-amounts-of-mercury-over-millennial-time-scales-in-the-absence-of-wildfire
#10
Reiner Giesler, Karina E Clemmensen, David A Wardle, Jonatan Klaminder, Richard Bindler
Alterations in fire activity due to climate change and fire suppression may have profound effects on the balance between storage and release of carbon (C) and associated volatile elements. Stored soil mercury (Hg) is known to volatilize due to wildfires and this could substantially affect the land-air exchange of Hg; conversely the absence of fires and human disturbance may increase the time period over which Hg is sequestered. Here we show for a wildfire chronosequence spanning over more than 5000 years in boreal forest in northern Sweden that belowground inventories of total Hg are strongly related to soil humus C accumulation (R(2) = 0...
February 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28149306/characterization-of-a-genomic-region-under-selection-in-cultivated-carrot-daucus-carota-subsp-sativus-reveals-a-candidate-domestication-gene
#11
Alicja Macko-Podgórni, Gabriela Machaj, Katarzyna Stelmach, Douglas Senalik, Ewa Grzebelus, Massimo Iorizzo, Philipp W Simon, Dariusz Grzebelus
Carrot is one of the most important vegetables worldwide, owing to its capability to develop fleshy, highly nutritious storage roots. It was domesticated ca. 1,100 years ago in Central Asia. No systematic knowledge about the molecular mechanisms involved in the domestication syndrome in carrot are available, however, the ability to form a storage root is undoubtedly the essential transition from the wild Daucus carota to the cultivated carrot. Here, we expand on the results of a previous study which identified a polymorphism showing a significant signature for selection upon domestication...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28126921/integrative-fourd-omics-approach-profiles-the-target-network-of-the-carbon-storage-regulatory-system
#12
Steven W Sowa, Grant Gelderman, Abigail N Leistra, Aishwarya Buvanendiran, Sarah Lipp, Areen Pitaktong, Christopher A Vakulskas, Tony Romeo, Michael Baldea, Lydia M Contreras
Multi-target regulators represent a largely untapped area for metabolic engineering and anti-bacterial development. These regulators are complex to characterize because they often act at multiple levels, affecting proteins, transcripts and metabolites. Therefore, single omics experiments cannot profile their underlying targets and mechanisms. In this work, we used an Integrative FourD omics approach (INFO) that consists of collecting and analyzing systems data throughout multiple time points, using multiple genetic backgrounds, and multiple omics approaches (transcriptomics, proteomics and high throughput sequencing crosslinking immunoprecipitation) to evaluate simultaneous changes in gene expression after imposing an environmental stress that accentuates the regulatory features of a network...
January 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28105522/response-of-aboveground-carbon-balance-to-long-term-experimental-enhancements-in-precipitation-seasonality-is-contingent-on-plant-community-type-in-cold-desert-rangelands
#13
Kathryn McAbee, Keith Reinhardt, Matthew J Germino, Andrew Bosworth
Semi-arid rangelands are important carbon (C) pools at global scales. However, the degree of net C storage or release in water-limited systems is a function of precipitation amount and timing, as well as plant community composition. In northern latitudes of western North America, C storage in cold-desert ecosystems could increase with boosts in wintertime precipitation, in which climate models predict, due to increases in wintertime soil water storage that enhance summertime productivity. However, there are few long-term, manipulative field-based studies investigating how rangelands will respond to altered precipitation amount or timing...
January 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28096191/allosteric-modulation-of-the-substrate-specificity-of-acyl-coa-wax-alcohol-acyltransferase-2-awat2
#14
Jason M Arne, Made Airanthi K Widjaja-Adhi, Taylor Hughes, Kevin W Huynh, Josie A Silvaroli, Sylwia Chelstowska, Vera Y Moiseenkova-Bell, Marcin Golczak
The esterification of alcohols with fatty acids is a universal mechanism to form inert storage forms of sterols, di- and triacylglycerols, and retinoids. In ocular tissues, formation of retinyl esters is an essential step in the enzymatic regeneration of the visual chromophore (11-cis-retinal). Acyl-CoA wax alcohol acyltransferase 2 (AWAT2), also known as multifunctional O-acyltransferase (MFAT), is an integral membrane enzyme with a broad substrate specificity that has been shown to preferentially esterify 11-cis-retinol and thus contribute to formation of readily available pool of cis retinoids in the eye...
January 17, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28076405/development-and-validation-of-a-new-reliable-method-for-the-diagnosis-of-avian-botulism
#15
Caroline Le Maréchal, Sandra Rouxel, Valentine Ballan, Emmanuelle Houard, Typhaine Poezevara, Marie-Hélène Bayon-Auboyer, Rozenn Souillard, Hervé Morvan, Marie-Agnès Baudouard, Cédric Woudstra, Christelle Mazuet, Sophie Le Bouquin, Patrick Fach, Michel Popoff, Marianne Chemaly
Liver is a reliable matrix for laboratory confirmation of avian botulism using real-time PCR. Here, we developed, optimized, and validated the analytical steps preceding PCR to maximize the detection of Clostridium botulinum group III in avian liver. These pre-PCR steps included enrichment incubation of the whole liver (maximum 25 g) at 37°C for at least 24 h in an anaerobic chamber and DNA extraction using an enzymatic digestion step followed by a DNA purification step. Conditions of sample storage before analysis appear to have a strong effect on the detection of group III C...
2017: PloS One
https://www.readbyqxmd.com/read/28072862/efficacy-and-safety-of-initial-combination-treatment-of-an-alpha-blocker-with-an-anticholinergic-medication-in-benign-prostatic-hyperplasia-patients-with-lower-urinary-tract-symptoms-updated-meta-analysis
#16
Hyun Jung Kim, Hwa Yeon Sun, Hoon Choi, Jae Young Park, Jae Hyun Bae, Seung Whan Doo, Won Jae Yang, Yun Seob Song, Young Myoung Ko, Jae Heon Kim
BACKGROUND: There is still controversy as to whether initial combination treatment is superior to serial addition of anticholinergics after maintenance or induction of alpha blockers in benign prostatic hyperplasia (BPH)/lower urinary tract symptoms (LUTS). OBJECTIVE: The objective of this study was to determine the benefits and safety of initial combination treatment of an alpha blocker with anticholinergic medication in BPH/LUTS through a systematic review and meta-analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28052499/ecosystem-carbon-density-and-allocation-across-a-chronosequence-of-longleaf-pine-forests
#17
Lisa J Samuelson, Thomas A Stokes, John R Butnor, Kurt H Johnsen, Carlos A Gonzalez-Benecke, Timothy A Martin, Wendell P Cropper, Pete H Anderson, Michael R Ramirez, John C Lewis
Forests can partially offset greenhouse gas emissions and contribute to climate change mitigation, mainly through increases in live biomass. We quantified carbon (C) density in 20 managed longleaf pine (Pinus palustris Mill.) forests ranging in age from 5 to 118 years located across the southeastern United States and estimated above- and belowground C trajectories. Ecosystem C stock (all pools including soil C) and aboveground live tree C increased nonlinearly with stand age and the modeled asymptotic maxima were 168 Mg C/ha and 80 Mg C/ha, respectively...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28042051/l-carnitine-is-a-survival-factor-for-chilled-storage-of-rooster-semen-for-a-long-time
#18
A Fattah, M Sharafi, R Masoudi, A Shahverdi, V Esmaeili
Rooster sperm is sensitive to cooling, which restricts procedures to store sperms for extended periods of time for artificial insemination of commercial flocks. This study was conducted to evaluate the suitability of adding L-carnitine (LC) to chilled-storage of rooster sperm and its effects on sperm quality parameters and its fertility potential during storage at 5 °C. Pooled semen from roosters were divided into six equal aliquots and diluted with media supplemented with different concentrations of LC (0, 0...
December 29, 2016: Cryobiology
https://www.readbyqxmd.com/read/28041820/combined-alpha-delta-platelet-storage-pool-deficiency-is-associated-with-mutations-in-gfi1b
#19
Carlos R Ferreira, Dong Chen, Shirley M Abraham, David R Adams, Karen L Simon, May C Malicdan, Thomas C Markello, Meral Gunay-Aygun, William A Gahl
Combined alpha-delta platelet storage pool deficiency is characterized by the absence or reduction in the number of both alpha granules and dense bodies. This disorder can have variable severity as well as a variable inheritance pattern. We describe two patients from unrelated families with combined alpha-delta storage pool deficiency due to mutations in GFI1B, a zinc finger protein known to act as a transcriptional repressor of various genes. We demonstrate that this disease is associated with either a heterozygous mutation (de novo or familial) abrogating the binding of the zinc fingers with the promoter of its target genes, or by hypomorphic biallelic mutations in GFI1B leading to autosomal recessive inheritance...
December 18, 2016: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28031527/tumor-initiating-cells-of-breast-and-prostate-origin-show-alterations-in-the-expression-of-genes-related-to-iron-metabolism
#20
Zuzana Rychtarcikova, Sandra Lettlova, Veronika Tomkova, Vlasta Korenkova, Lucie Langerova, Ekaterina Simonova, Polina Zjablovskaja, Meritxell Alberich-Jorda, Jiri Neuzil, Jaroslav Truksa
The importance of iron in the growth and progression of tumors has been widely documented. In this report, we show that tumor-initiating cells (TICs), represented by spheres derived from the MCF7 cell line, exhibit higher intracellular labile iron pool, mitochondrial iron accumulation and are more susceptible to iron chelation. TICs also show activation of the IRP/IRE system, leading to higher iron uptake and decrease in iron storage, suggesting that level of properly assembled cytosolic iron-sulfur clusters (FeS) is reduced...
January 24, 2017: Oncotarget
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