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https://www.readbyqxmd.com/read/28730104/down-regulation-of-protein-kinase-c-alpha-ezrin-signals-in-light-induced-phagocytic-crisis-of-retinal-pigment-epithelium-cells
#1
Ya-Qiong Zhang, Yong-Gang Fan, Ya-Long Dang, Yan-Li Liu, Hua Liu, Li-Hua Li
AIM: To investigate the roles of PKC-α/ezrin signals in phagocytosis crisis of retinal pigment epithelium (RPE) cells in light damage model. METHODS: Light induced mice RPE injury model was established by continuously irradiating cool white light at different exposure time (0, 4, 8h light intensity: 4.18×10(-6) J/cm(2)). In vitro, human ARPE-19 cells treated with the doses and intensity (1.57×10(-6) J/cm(2)) of laser irradiation. Histology analysis was evaluated by hematoxylin and eosin (HE) staining...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28725268/towards-microalgal-triglycerides-in-the-commodity-markets
#2
Giulia Benvenuti, Jesús Ruiz, Packo P Lamers, Rouke Bosma, René H Wijffels, Maria J Barbosa
BACKGROUND: Microalgal triglycerides (TAGs) hold great promise as sustainable feedstock for commodity industries. However, to determine research priorities and support business decisions, solid techno-economic studies are essential. Here, we present a techno-economic analysis of two-step TAG production (growth reactors are operated in continuous mode such that multiple batch-operated stress reactors are inoculated and harvested sequentially) for a 100-ha plant in southern Spain using vertically stacked tubular photobioreactors...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28720968/technological-quality-of-dough-and-breads-from-commercial-algarroba-wheat-flour-blends
#3
M J Correa, M V Salinas, B Carbas, C Ferrero, C Brites, M C Puppo
Algarroba flour is used to supplement lysine-limiting systems such as wheat flour due to its amino acidic composition. The effects of adding up to 30% of this flour to wheat flour (W-A30) on dough characteristics and breadmaking performance were studied. Dough rheology was tested by farinograph, oscillatory rheometry and texture profile analyses. Molecular mobility was evaluated by nuclear magnetic resonance, and thermal properties were analyzed by differential scanning calorimetry and viscoamylograph studies...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28719827/mixed-evidence-for-the-potential-of-non-invasive-transcutaneous-vagal-nerve-stimulation-to-improve-the-extinction-and-retention-of-fear
#4
A M Burger, B Verkuil, H Fenlon, L Thijs, L Cools, H C Miller, B Vervliet, I Van Diest
Extinction memories are fragile and their formation has been proposed to partially rely on vagus nerve activity. We tested whether stimulating the auricular branch of the vagus (transcutaneous VNS; tVNS) accelerates extinction and reduces spontaneous recovery of fear. Forty-two healthy students participated in a 3-day fear conditioning study, where we tested fear acquisition (day 1), fear extinction (day 2) and the retention of the extinction memory (day 3). During extinction, participants were randomly allocated to receive tVNS or sham stimulation concurrently with each CS presentation...
July 8, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/28717232/the-epichlo%C3%A3-festucae-antifungal-protein-has-activity-against-the-plant-pathogen-sclerotinia-homoeocarpa-the-causal-agent-of-dollar-spot-disease
#5
Zipeng Tian, Ruying Wang, Karen V Ambrose, Bruce B Clarke, Faith C Belanger
Epichloë spp. are naturally occurring fungal endophytic symbionts of many cool-season grasses. Infection by the fungal endophytes often confers biotic and abiotic stress tolerance to their hosts. Endophyte-mediated disease resistance is well-established in the fine fescue grass Festuca rubra subsp. rubra (strong creeping red fescue) infected with E. festucae. Resistance to fungal pathogens is not an established effect of endophyte infection of other grass species, and may therefore be unique to the fine fescues...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715879/high-photocatalytic-performance-of-two-types-of-graphene-modified-tio2-composite-photocatalysts
#6
Jun Zhang, Sen Li, Bo Tang, Zhengwei Wang, Guojian Ji, Weiqiu Huang, Jinping Wang
High quality and naturally continuous structure of three-dimensional graphene network (3DGN) endow it a promising candidate to modify TiO2. Although the resulting composite photocatalysts display outstanding performances, the lacking of active sites of the 3DGN not only goes against a close contact between the graphene basal plane and TiO2 nanoparticles (weaken electron transport ability) but also limits the efficient adsorption of pollutant molecules. Similar with surface functional groups of the reduced graphene oxide (RGO) nanosheets, surface defects of the 3DGN can act as the adsorption sites...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28715283/temperate-water-immersion-as-a-treatment-for-hyperthermic-humans-wearing-american-football-uniforms
#7
Kevin C Miller, Tyler Truxton, Blaine Long
CONTEXT:   Cold-water immersion (CWI; 10°C) can effectively reduce body core temperature even if a hyperthermic human is wearing a full American football uniform (PADS) during treatment. Temperate-water immersion (TWI; 21°C) may be an effective alternative to CWI if resources for the latter (eg, ice) are unavailable. OBJECTIVE:   To measure rectal temperature (Trec) cooling rates, thermal sensation, and Environmental Symptoms Questionnaire (ESQ) scores of participants wearing PADS or shorts, undergarments, and socks (NOpads) before, during, and after TWI...
July 17, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28712146/a-reversal-of-the-shift-towards-earlier-spring-phenology-in-several-mediterranean-reptiles-and-amphibians-during-the-1998-2013-warming-slowdown
#8
Roger Prodon, Philippe Geniez, Marc Cheylan, Florence Devers, Isabelle Chuine, Aurelien Besnard
Herps, especially amphibians, are particularly susceptible to climate change, since temperature tightly controls many parameters of their biological cycle - above all, their phenology. The timing of herps' activity or migration period - in particular the dates of their first appearance in spring and first breeding - and the shift to earlier dates in response to warming since the last quarter of the 20(th) century has often been described up to now as a nearly monotonic trend towards earlier phenological events...
July 16, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28710023/transient-brain-hypothermia-reduces-the-reperfusion-injury-of-delayed-tissue-plasminogen-activator-and-extends-its-therapeutic-time-window-in-a-focal-embolic-stroke-model
#9
Mohammadreza Zarisfi, Fatemeh Allahtavakoli, Mahsa Hassanipour, Mohammad Khaksari, Hossain Rezazadeh, Mohammad Allahtavakoli, Mohammad Mohsen Taghavi
It has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether shortIt has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether short-term and mild local brain cooling can prevent hyperemia and/or adverse effects of delayed tPA in rat embolic stroke model...
July 11, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28708401/cryopreservation-of-proteins-using-ionic-liquids-a-case-study-of-cytochrome-c
#10
Takahiro Takekiyo, Yuka Ishikawa, Yukihiro Yoshimura
Aqueous ionic liquid (IL) solutions form a glassy state at 77 K over a wide concentration of ILs. They have potential as novel cryopreservation/refolding solvents for proteins. However, even if proteins in glass-forming concentrations of ILs are preserved at 77 K, the recovery of activity and the structure of the proteins after cryopreservation are still unclear. To achieve high recovery of protein activity and structure by removal of ILs after cryopreservation at 77 K, we studied the recovery of activity and structural stability after cryopreservation of bovine heart cytochrome c in aqueous solutions with ILs, including ethylammonium nitrate (EAN) and 1-butyl-3-methylimidazolium thiocyanate ([bmim][SCN]) over wide IL concentrations using UV-Vis, Fourier transform infrared (FTIR), and circular dichroism (CD) spectroscopy...
July 14, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28704062/flextouch-an-insulin-pen-injector-with-a-low-activation-force-across-different-insulin-formulations-needle-technologies-and-temperature-conditions
#11
Niels Gudiksen, Thibaud Hofstätter, Birgitte B Rønn, Thomas Sparre
FlexTouch® (Novo Nordisk A/S, Bagsvaerd, Denmark) is a pen-injector with a torque spring mechanism requiring a low activation force. This laboratory-based study compared the activation force of FlexTouch during the injection of insulin with different needles and at temperature conditions within the range at which the device is recommended for use. Using a tensile tester, activation force was measured at maximum dose settings for insulin detemir (100 U/mL) and insulin degludec (100 and 200 U/mL) at standard (23°C ± 5°C), cool (5°C ± 3°C), and warm (30°C ± 2°C) conditions...
July 13, 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28693724/direct-coupling-of-supercritical-fluid-chromatography-with-tandem-mass-spectrometry-for-the-analysis-of-amino-acids-and-related-compounds-comparing-electrospray-ionization-and-atmospheric-pressure-chemical-ionization
#12
Denise Wolrab, Peter Frühauf, Christopher Gerner
For acceptance of supercritical fluid chromatography (SFC) as a routine analysis method, the hyphenation to mass spectrometry (MS), which is typically achieved either by a splitting device or by the employment of an additional make up flow, has to be improved. Direct coupling of SFC to MS (/MS) would simplify the handling of this method. Consequently, this work focused on the direct coupling of SFC to mass spectrometry and the influence of the employed ion source on signal intensities of polar and ionic compounds in biological samples...
August 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28692041/strength-of-the-repulsive-part-of-the-interatomic-potential-determines-fragility-in-metallic-liquids
#13
Christopher E Pueblo, Minhua Sun, K F Kelton
The dynamical behaviour of liquids is frequently characterized by the fragility, which can be defined from the temperature dependence of the shear viscosity, η (ref. ). For a strong liquid, the activation energy for η changes little with cooling towards the glass transition temperature, Tg. The change is much greater in fragile liquids, with the activation energy becoming very large near Tg. While fragility is widely recognized as an important concept-believed, for example, to play an important role in glass formation-the microscopic origin of fragility is poorly understood...
July 10, 2017: Nature Materials
https://www.readbyqxmd.com/read/28689717/compensation-of-thermal-constraints-along-a-natural-environmental-gradient-in-a-malagasy-iguanid-lizard-oplurus-quadrimaculatus
#14
Ole Theisinger, W Berg, K H Dausmann
Physiological or behavioural adjustments are a prerequisite for ectotherms to cope with different thermal environments. One of the world's steepest environmental gradients in temperature and precipitation can be found in southeastern Madagascar. This unique gradient allowed us to study the compensation of thermal constraints in the heliothermic lizard Oplurus quadrimaculatus on a very small geographic scale. The lizard occurs from hot spiny forest to intermediate gallery and transitional forest to cooler rain forest and we investigated whether these habitat differences are compensated behaviourally or physiologically...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689097/design-synthesis-and-antitubercular-potency-of-4-hydroxyquinolin-2-1h-ones
#15
Maíra Bidart de Macedo, Roman Kimmel, Damijana Urankar, Martin Gazvoda, Antonio Peixoto, Freya Cools, Eveline Torfs, Luc Verschaeve, Emerson Silva Lima, Antonín Lyčka, David Milićević, Antonín Klásek, Paul Cos, Stanislav Kafka, Janez Košmrlj, Davie Cappoen
In this study, a 50-membered library of substituted 4-hydroxyquinolin-2(1H)-ones and two closely related analogues was designed, scored in-silico for drug likeness and subsequently synthesized. Thirteen derivatives, all sharing a common 3-phenyl substituent showed minimal inhibitory concentrations against Mycobacterium tuberculosis H37Ra below 10 μM and against Mycobacterium bovis AN5A below 15 μM but were inactive against faster growing mycobacterial species. None of these selected derivatives showed significant acute toxicity against MRC-5 cells or early signs of genotoxicity in the Vitotox™ assay at the active concentration range...
June 29, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28688647/effect-of-hypothermia-on-splenic-leukocyte-modulation-and-survival-duration-in-severely-septic-rats
#16
Rhett N Willis, Eric J Charles, Christopher A Guidry, Mahendra D Chordia, Stephen W Davies, Zequan Yang, Robert G Sawyer
BACKGROUND: Therapeutic hypothermia (HT) in severe septic shock is associated with prolonged survival. We hypothesized that moderate HT would prolong survival and modulate the inflammatory response in rats with septic shock by exerting its therapeutic effect on splenic leukocytes. MATERIALS AND METHODS: Severe septic shock was created in rats by cecal ligation and incision (CLI). One hour after CLI or laparotomy, rats were randomized to sham, normothermia (NT), or 4 h of HT followed by 2 h of rewarming...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28687308/deep-hypothermia-therapy-attenuates-lps-induced-microglia-neuroinflammation-via-the-stat3-pathway
#17
G Tong, A Krauss, J Mochner, S Wollersheim, P Soltani, F Berger, K R L Schmitt
Deep hypothermia therapy (HT) is a standard method for neuroprotection during complex pediatric cardiac surgery involving extracorporeal circulation and deep hypothermic cardiac arrest. The procedure, however, can provoke systemic inflammatory response syndrome (SIRS), one of the most severe side effects associated with pediatric cardiac surgery. To date, the cellular inflammatory mechanisms induced by deep HT remain to be elucidated. Therefore, we investigated the effects of deep HT (17°C) and rewarming on the inflammatory response in lipopolysaccharide (LPS) stimulated BV-2 murine microglia...
July 5, 2017: Neuroscience
https://www.readbyqxmd.com/read/28685647/effects-of-a-phase-change-cooling-garment-during-exercise-in-the-heat
#18
Cory L Butts, Madeline L Torretta, Cody R Smith, Adam J Petway, Brendon P McDermott
The purpose of our study was to examine the physiological, perceptual, and performance effects of wearing a phase change cooling garment (CG) during an interval exercise routine in the heat. Sixteen male participants (age 23 ± 3 years, ht 1.76 ± 0.11 m; wt 78.5 ± 11.2 kg; body fat 15.2 ± 5.8%) completed two trials (one with phase change inserts, CG, and one control without inserts) consisting of two submaximal exercise portions separated by 5-minute seated rest, and a final maximal effort performance bout...
July 7, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28685340/multimarker-study-of-the-effects-of-antifouling-biocide-on-benthic-organisms-results-using-perna-viridis-as-candidate-species
#19
Pooja Chavan, Rajesh Kumar, Hiren Joshi, Ramalingam Kirubagaran, Vayalam P Venugopalan
Toxic effects of continuous low dose application of the antifouling biocide chlorine on marine benthic organisms were monitored using transplanted green mussels (Perna viridis) and a suite of biomarkers. Caged mussels were deployed in chlorinated and non-chlorinated sections of the cooling system of an operating electric power plant. Biomarkers indicative of general stress, oxidative stress (superoxide dismutase and catalase), and DNA integrity, along with expression of stress proteins, were studied to assess the effects...
July 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28680934/improving-rational-thermal-comfort-prediction-by-using-subpopulation-characteristics-a-case-study-at-hermitage-amsterdam
#20
Rick Kramer, Lisje Schellen, Henk Schellen, Boris Kingma
This study aims to improve the prediction accuracy of the rational standard thermal comfort model, known as the Predicted Mean Vote (PMV) model, by (1) calibrating one of its input variables "metabolic rate," and (2) extending it by explicitly incorporating the variable running mean outdoor temperature (RMOT) that relates to adaptive thermal comfort. The analysis was performed with survey data (n = 1121) and climate measurements of the indoor and outdoor environment from a one year-long case study undertaken at Hermitage Amsterdam museum in the Netherlands...
2017: Temperature: Multidisciplinary Biomedical Journal
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