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https://www.readbyqxmd.com/read/27902714/evaluation-of-the-activity-of-lamivudine-and-zidovudine-against-ebola-virus
#1
Yu Cong, Julie Dyall, Brit J Hart, Lisa Evans DeWald, Joshua C Johnson, Elena Postnikova, Huanying Zhou, Robin Gross, Oscar Rojas, Isis Alexander, Nicole Josleyn, Tengfei Zhang, Julia Michelotti, Krisztina Janosko, Pamela J Glass, Mike Flint, Laura K McMullan, Christina F Spiropoulou, Tim Mierzwa, Rajarshi Guha, Paul Shinn, Sam Michael, Carleen Klumpp-Thomas, Crystal McKnight, Craig Thomas, Ann E Eakin, Kathleen G O'Loughlin, Carol E Green, Paul Catz, Jon C Mirsalis, Anna N Honko, Gene G Olinger, Richard S Bennett, Michael R Holbrook, Lisa E Hensley, Peter B Jahrling
In the fall of 2014, an international news agency reported that patients suffering from Ebola virus disease (EVD) in Liberia were treated successfully with lamivudine, an antiviral drug used to treat human immunodeficiency virus-1 and hepatitis B virus infections. According to the report, 13 out of 15 patients treated with lamivudine survived and were declared free from Ebola virus disease. In this study, the anti-Ebola virus (EBOV) activity of lamivudine and another antiretroviral, zidovudine, were evaluated in a diverse set of cell lines against two variants of wild-type EBOV...
2016: PloS One
https://www.readbyqxmd.com/read/27901108/survey-of-the-green-picoalga-bathycoccus-genomes-in-the-global-ocean
#2
Thomas Vannier, Jade Leconte, Yoann Seeleuthner, Samuel Mondy, Eric Pelletier, Jean-Marc Aury, Colomban de Vargas, Michael Sieracki, Daniele Iudicone, Daniel Vaulot, Patrick Wincker, Olivier Jaillon
Bathycoccus is a cosmopolitan green micro-alga belonging to the Mamiellophyceae, a class of picophytoplankton that contains important contributors to oceanic primary production. A single species of Bathycoccus has been described while the existence of two ecotypes has been proposed based on metagenomic data. A genome is available for one strain corresponding to the described phenotype. We report a second genome assembly obtained by a single cell genomics approach corresponding to the second ecotype. The two Bathycoccus genomes are divergent enough to be unambiguously distinguishable in whole DNA metagenomic data although they possess identical sequence of the 18S rRNA gene including in the V9 region...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27899881/transcriptomics-of-environmental-enrichment-reveals-a-role-for-retinoic-acid-signaling-in-addiction
#3
Yafang Zhang, Fanping Kong, Elizabeth J Crofton, Steven N Dragosljvich, Mala Sinha, Dingge Li, Xiuzhen Fan, Shyny Koshy, Jonathan D Hommel, Heidi M Spratt, Bruce A Luxon, Thomas A Green
There exists much variability in susceptibility/resilience to addiction in humans. The environmental enrichment paradigm is a rat model of resilience to addiction-like behavior, and understanding the molecular mechanisms underlying this protective phenotype may lead to novel targets for pharmacotherapeutics to treat cocaine addiction. We investigated the differential regulation of transcript levels using RNA sequencing of the rat nucleus accumbens after environmental enrichment/isolation and cocaine/saline self-administration...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27899691/high-throughput-spectral-and-lifetime-based-fret-screening-in-living-cells-to-identify-small-molecule-effectors-of-serca
#4
Tory M Schaaf, Kurt C Peterson, Benjamin D Grant, Prachi Bawaskar, Samantha Yuen, Ji Li, Joseph M Muretta, Gregory D Gillispie, David D Thomas
A robust high-throughput screening (HTS) strategy has been developed to discover small-molecule effectors targeting the sarco/endoplasmic reticulum calcium ATPase (SERCA), based on a fluorescence microplate reader that records both the nanosecond decay waveform (lifetime mode) and the complete emission spectrum (spectral mode), with high precision and speed. This spectral unmixing plate reader (SUPR) was used to screen libraries of small molecules with a fluorescence resonance energy transfer (FRET) biosensor expressed in living cells...
November 29, 2016: Journal of Biomolecular Screening
https://www.readbyqxmd.com/read/27881846/naturally-occurring-fc-dependent-antibody-from-hiv-seronegative-individuals-promotes-hiv-induced-ifn-%C3%AE-production
#5
Thomas Lum, Jon A Green
A majority of adults without HIV infection and with a low risk of HIV-exposure have plasma IgG antibodies that enhance the rate and magnitude of HIV-induced interferon alpha (IFN-α) production. Fc-dependent IgG-HIV complexes induce IFN-α rapidly and in high titers in response to HIV concentrations that are too low to otherwise stimulate an effective IFN-α response. IFN-α promoting antibody (IPA) counters HIV-specific inhibition of IFN-α production, and compensates for the inherent delay in IFN-α production common to HIV infection and other viruses...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27879398/spectral-unmixing-plate-reader-high-throughput-high-precision-fret-assays-in-living-cells
#6
Tory M Schaaf, Kurt C Peterson, Benjamin D Grant, David D Thomas, Gregory D Gillispie
We have developed a microplate reader that records a complete high-quality fluorescence emission spectrum on a well-by-well basis under true high-throughput screening (HTS) conditions. The read time for an entire 384-well plate is less than 3 min. This instrument is particularly well suited for assays based on fluorescence resonance energy transfer (FRET). Intramolecular protein biosensors with genetically encoded green fluorescent protein (GFP) donor and red fluorescent protein (RFP) acceptor tags at positions sensitive to structural changes were stably expressed and studied in living HEK cells...
November 22, 2016: Journal of Biomolecular Screening
https://www.readbyqxmd.com/read/27878965/a-simplified-procedure-for-antibody-engineering-by-yeast-surface-display-coupling-display-levels-and-target-binding-by-ribosomal-skipping
#7
Julius Grzeschik, Steffen C Hinz, Doreen Könning, Thomas Pirzer, Stefan Becker, Stefan Zielonka, Harald Kolmar
Yeast surface display is a valuable, widely used method for protein engineering. However, current yeast display applications rely on the staining of epitope tags in order to verify full-length presentation of the protein of interest on the cell surface. We aimed at developing a modified yeast display approach that relies on ribosomal skipping, thereby enabling the translation of two proteins from one open reading frame and, in that manner, generating an intracellular fluorescence signal. This improved setup is based on a 2A sequence that is encoded between the protein to be displayed and a gene for green fluorescent protein (GFP)...
November 23, 2016: Biotechnology Journal
https://www.readbyqxmd.com/read/27878096/a-sixth-level-habitat-cascade-increases-biodiversity-in-an-intertidal-estuary
#8
Mads S Thomsen, Thomas Hildebrand, Paul M South, Travis Foster, Alfonso Siciliano, Eliza Oldach, David R Schiel
Many studies have documented habitat cascades where two co-occurring habitat-forming species control biodiversity. However, more than two habitat-formers could theoretically co-occur. We here documented a sixth-level habitat cascade from the Avon-Heathcote Estuary, New Zealand, by correlating counts of attached inhabitants to the size and accumulated biomass of their biogenic hosts. These data revealed predictable sequences of habitat-formation (=attachment space). First, the bivalve Austrovenus provided habitat for green seaweeds (Ulva) that provided habitat for trochid snails in a typical estuarine habitat cascade...
November 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27875947/skeletal-muscle-insulin-resistance-as-a-precursor-to-diabetes-beyond-glucoregulation
#9
Nicholas P Greene, Jacob L Brown, Megan E Rosa-Caldwell, David E Lee, Thomas A Blackwell, Tyrone A Washington
Prevalence of Type 2 Diabetes Mellitus (T2DM) has reached pandemic levels in Western societies. T2DM begins with the development of peripheral insulin resistance which prior research suggests may commonly originate within skeletal muscle. A number of mechanisms have been proposed for the development of muscle insulin resistance including those of classical glucose handling, but also other cellular derangements observed in this disease which include mitochondrial degeneration, alterations in muscle protein turnover and early evidences for dysregulation of microRNAs...
November 22, 2016: Current Diabetes Reviews
https://www.readbyqxmd.com/read/27872814/transcriptional-profiles-of-wnv-neurovirulence-in-a-genetically-diverse-collaborative-cross-population
#10
Richard Green, Courtney Wilkins, Sunil Thomas, Aimee Sekine, Renee C Ireton, Martin T Ferris, Duncan M Hendrick, Kathleen Voss, Fernando Pardo-Manuel de Villena, Ralph S Baric, Mark T Heise, Michael Gale
West Nile Virus (WNV) is a mosquito-transmitted virus from the Flaviviridae family that causes fever in 1 in 5 infected people. WNV can also become neuro-invasive and cross the blood-brain barrier leading to severe neurological symptoms in a subset of WNV infected individuals [1]. WNV neuro-invasion is believed to be influenced by a number of factors including host genetics. In order to explore these effects and recapitulate the complex immune genetic differences among individuals, we studied gene expression following WNV infection in the Collaborative Cross (CC) model...
December 2016: Genomics Data
https://www.readbyqxmd.com/read/27866739/an-integrated-approach-for-identifying-priority-contaminant-in-the-great-lakes-basin-investigations-in-the-lower-green-bay-fox-river-and-milwaukee-estuary-areas-of-concern
#11
Shibin Li, Daniel L Villeneuve, Jason P Berninger, Brett R Blackwell, Jenna E Cavallin, Megan N Hughes, Kathleen M Jensen, Zachary Jorgenson, Michael D Kahl, Anthony L Schroeder, Kyle E Stevens, Linnea M Thomas, Matthew A Weberg, Gerald T Ankley
Environmental assessment of complex mixtures typically requires integration of chemical and biological measurements. This study demonstrates the use of a combination of instrumental chemical analyses, effects-based monitoring, and bio-effects prediction approaches to help identify potential hazards and priority contaminants in two Great Lakes Areas of Concern (AOCs), the Lower Green Bay/Fox River located near Green Bay, WI, USA and the Milwaukee Estuary, located near Milwaukee, WI, USA. Fathead minnows were caged at four sites within each AOC (eight sites total)...
November 17, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27859790/luminescent-gold-iii-thiolates-supramolecular-interactions-trigger-and-control-switchable-photoemissions-from-bimolecular-excited-states
#12
Lucy Currie, Julio Fernandez-Cestau, Luca Rocchigiani, Benoît Bertrand, Simon J Lancaster, David L Hughes, Helen Duckworth, Saul T E Jones, Dan Credgington, Thomas J Penfold, Manfred Bochmann
A new family of cyclometallated gold(III) thiolato complexes based on pyrazine-centred pincer ligands has been prepared, (C^N(pz) ^C)AuSR, where C^N(pz) ^C=2,6-bis(4-Bu(t) C6 H4 )pyrazine dianion and R=Ph (1), C6 H4 tBu-4 (2), 2-pyridyl (3), 1-naphthyl (1-Np, 4), 2-Np (5), quinolinyl (Quin, 6), 4-methylcoumarinyl (Coum, 7) and 1-adamantyl (8). The complexes were isolated as yellow to red solids in high yields using mild synthetic conditions. The single-crystal X-ray structures revealed that the colour of the deep-red solids is associated with the formation of a particular type of short (3...
November 9, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27856910/a-synthetic-pathway-for-the-fixation-of-carbon-dioxide-in-vitro
#13
Thomas Schwander, Lennart Schada von Borzyskowski, Simon Burgener, Niña Socorro Cortina, Tobias J Erb
Carbon dioxide (CO2) is an important carbon feedstock for a future green economy. This requires the development of efficient strategies for its conversion into multicarbon compounds. We describe a synthetic cycle for the continuous fixation of CO2 in vitro. The crotonyl-coenzyme A (CoA)/ethylmalonyl-CoA/hydroxybutyryl-CoA (CETCH) cycle is a reaction network of 17 enzymes that converts CO2 into organic molecules at a rate of 5 nanomoles of CO2 per minute per milligram of protein. The CETCH cycle was drafted by metabolic retrosynthesis, established with enzymes originating from nine different organisms of all three domains of life, and optimized in several rounds by enzyme engineering and metabolic proofreading...
November 18, 2016: Science
https://www.readbyqxmd.com/read/27856902/perovskite-perovskite-tandem-photovoltaics-with-optimized-band-gaps
#14
Giles E Eperon, Tomas Leijtens, Kevin A Bush, Rohit Prasanna, Thomas Green, Jacob Tse-Wei Wang, David P McMeekin, George Volonakis, Rebecca L Milot, Richard May, Axel Palmstrom, Daniel J Slotcavage, Rebecca A Belisle, Jay B Patel, Elizabeth S Parrott, Rebecca J Sutton, Wen Ma, Farhad Moghadam, Bert Conings, Aslihan Babayigit, Hans-Gerd Boyen, Stacey Bent, Feliciano Giustino, Laura M Herz, Michael B Johnston, Michael D McGehee, Henry J Snaith
We demonstrate four- and two-terminal perovskite-perovskite tandem solar cells with ideally matched band gaps. We develop an infrared-absorbing 1.2-electron volt band-gap perovskite, FA0.75Cs0.25Sn0.5Pb0.5I3, that can deliver 14.8% efficiency. By combining this material with a wider-band gap FA0.83Cs0.17Pb(I0.5Br0.5)3 material, we achieve monolithic two-terminal tandem efficiencies of 17.0% with >1.65-volt open-circuit voltage. We also make mechanically stacked four-terminal tandem cells and obtain 20.3% efficiency...
November 18, 2016: Science
https://www.readbyqxmd.com/read/27856300/hemin-utilizing-g-quadruplex-dnazymes-are-strongly-active-in-organic-co-solvents
#15
Thomas D Canale, Dipankar Sen
The widespread use of organic solvents in industrial processes has focused in recent years on the utility of "green" solvents - those with less harmful environmental, health, and safety properties - such as methanol and formamide. However, protein enzymes, regarded as green catalysts, are often incompatible with organic solvents. Herein, we have explored the oxidative properties of a Fe(III)-heme, or hemin, utilizing catalytic DNA (heme·DNAzyme) in different green solvent-water mixtures. We find that the peroxidase and peroxygenase activities of the heme·DNAzyme are strongly enhanced in 20-30% v/v methanol or formamide, relative to water alone...
November 14, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27855780/decoding-gripping-force-based-on-local-field-potentials-recorded-from-subthalamic-nucleus-in-humans
#16
Huiling Tan, Alek Pogosyan, Keyoumars Ashkan, Alexander L Green, Tipu Aziz, Thomas Foltynie, Patricia Limousin, Ludvic Zrinzo, Marwan Hariz, Peter Brown
The basal ganglia are known to be involved in the planning, execution and control of gripping force and movement vigour. Here we aim to define the nature of the basal ganglia control signal for force and to decode gripping force based on local field potential (LFP) activities recorded from the subthalamic nucleus (STN) in patients with deep brain stimulation (DBS) electrodes. We found that STN LFP activities in the gamma (55-90 Hz) and beta (13-30 Hz) bands were most informative about gripping force, and that a first order dynamic linear model with these STN LFP features as inputs can be used to decode the temporal profile of gripping force...
November 18, 2016: ELife
https://www.readbyqxmd.com/read/27852036/interim-analysis-of-a-phase-i-iia-trial-assessing-e39-gm-csf-a-folate-binding-protein-vaccine-to-prevent-recurrence-in-ovarian-and-endometrial-cancer-patients
#17
Doreen O Jackson, Kevin Byrd, Timothy J Vreeland, Diane F Hale, Garth S Herbert, Julia M Greene, Erika J Schneble, John S Berry, Alfred F Trappey, G T Clifton, Mark O Hardin, Jonathan Martin, John C Elkas, Thomas P Conrads, Kathleen M Darcy, Chad A Hamilton, George L Maxwell, George E Peoples
BACKGROUND: Folate binding protein(FBP) is an immunogenic protein over-expressed in endometrial(EC) and ovarian cancer(OC). We are conducting a phase I/IIa trial of E39 (GALE 301)+GM-CSF, an HLA-A2-restricted, FBP-derived peptide vaccine to prevent recurrences in disease-free EC and OC patients. This interim analysis summarizes toxicity, immunologic responses, and clinical outcomes to date. METHODS: HLA-A2+ patients were vaccinated(VG), and HLA-A2- or -A2+ patients were followed as controls(CG)...
November 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27846826/natural-product-htp-screening-for-antibacterial-e-coli-0157-h7-and-anti-inflammatory-agents-in-lps-from-e-coli-o111-b4-activated-macrophages-and-microglial-cells-focus-on-sepsis
#18
Elizabeth A Mazzio, Nan Li, David Bauer, Patricia Mendonca, Equar Taka, Mohammed Darb, Leeshawn Thomas, Henry Williams, Karam F A Soliman
BACKGROUND: Acute systemic inflammatory response syndrome arising from infection can lead to multiple organ failure and death, with greater susceptibility occurring in immunocompromised individuals. Moreover, sub-acute chronic inflammation is a contributor to the pathology of diverse degenerative diseases (Parkinson's disease, Alzheimer's disease and arthritis). Given the known limitations in Western medicine to treat a broad range of inflammatory related illness as well as the emergence of antibiotic resistance, there is a renewed interest in complementary and alternative medicines (CAMs) to achieve these means...
November 15, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27846063/comparison-of-cysts-in-red-and-green-images-for-diabetic-macular-edema
#19
Mastour A Alhamami, Ann E Elsner, Victor E Malinovsky, Christopher A Clark, Bryan P Haggerty, Glen Y Ozawa, Jorge A Cuadros, Karthikeyan Baskaran, Thomas J Gast, Taras V Litvin, Matthew S Muller, Shane G Brahm, Stuart B Young, Masahiro Miura
PURPOSE: To investigate whether cysts in diabetic macular edema are better visualized in the red channel of color fundus camera images, as compared with the green channel, because color fundus camera screening methods that emphasize short-wavelength light may miss cysts in patients with dark fundi or changes to outer blood retinal barrier. METHODS: Fundus images for diabetic retinopathy photoscreening were acquired for a study with Aeon Imaging, EyePACS, University of California Berkeley, and Indiana University...
November 11, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/27843766/identifying-protective-host-gene-expression-signatures-within-the-spleen-during-west-nile-virus-infection-in-the-collaborative-cross-model
#20
Richard Green, Courtney Wilkins, Sunil Thomas, Aimee Sekine, Renee C Ireton, Martin T Ferris, Duncan M Hendrick, Kathleen Voss, Fernando Pardo-Manuel de Villena, Ralph Baric, Mark Heise, Michael Gale
Flaviviruses are hematophagous arthropod-viruses that pose global challenges to human health. Like Zika virus, West Nile Virus (WNV) is a flavivirus for which no approved vaccine exists [1]. The role host genetics play in early detection and response to WNV still remains largely unexplained. In order to capture the impact of genetic variation on innate immune responses, we studied gene expression following WNV infection using the collaborative cross (CC). The CC is a mouse genetics resource composed of hundreds of independently bred, octo-parental recombinant inbred mouse lines [2]...
December 2016: Genomics Data
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