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https://www.readbyqxmd.com/read/28076420/chaperone-mediated-autophagy-protein-bag3-negatively-regulates-ebola-and-marburg-vp40-mediated-egress
#1
Jingjing Liang, Cari A Sagum, Mark T Bedford, Sachdev S Sidhu, Marius Sudol, Ziying Han, Ronald N Harty
Ebola (EBOV) and Marburg (MARV) viruses are members of the Filoviridae family which cause outbreaks of hemorrhagic fever. The filovirus VP40 matrix protein is essential for virus assembly and budding, and its PPxY L-domain motif interacts with WW-domains of specific host proteins, such as Nedd4 and ITCH, to facilitate the late stage of virus-cell separation. To identify additional WW-domain-bearing host proteins that interact with VP40, we used an EBOV PPxY-containing peptide to screen an array of 115 mammalian WW-domain-bearing proteins...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28074834/corrigendum-differential-transcriptional-responses-to-ebola-and-marburg-virus-infection-in-bat-and-human-cells
#2
Martin Hölzer, Verena Krähling, Fabian Amman, Emanuel Barth, Stephan H Bernhart, Victor A O Carmelo, Maximilian Collatz, Gero Doose, Florian Eggenhofer, Jan Ewald, Jörg Fallmann, Lasse M Feldhahn, Markus Fricke, Juliane Gebauer, Andreas J Gruber, Franziska Hufsky, Henrike Indrischek, Sabina Kanton, Jörg Linde, Nelly Mostajo, Roman Ochsenreiter, Konstantin Riege, Lorena Rivarola-Duarte, Abdullah H Sahyoun, Sita J Saunders, Stefan E Seemann, Andrea Tanzer, Bertram Vogel, Stefanie Wehner, Michael T Wolfinger, Rolf Backofen, Jan Gorodkin, Ivo Grosse, Ivo Hofacker, Steve Hoffmann, Christoph Kaleta, Peter F Stadler, Stephan Becker, Manja Marz
No abstract text is available yet for this article.
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070675/-refeeding-syndrome-in-geriatric-patients-a-frequently-overlooked-complication
#3
Rainer Wirth, Rebecca Diekmann, Olga Fleiter, Leonhardt Fricke, Annika Kreilkamp, Mirja Katrin Modreker, Christian Marburger, Stefan Nels, Rolf Schaefer, Heinz-Peter Willschrei, Dorothee Volkert
The refeeding syndrome is a life-threatening complication that can occur after initiation of a nutrition therapy in malnourished patients. If the risk factors and pathophysiology are known, the refeeding syndrome can effectively be prevented and treated, if recognized early. A slow increase of food intake and the close monitoring of serum electrolyte levels play an important role. Because the refeeding syndrome is not well known and the symptoms may vary extremely, this complication is poorly recognized, especially against the background of geriatric multimorbidity...
January 9, 2017: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/28069021/preoperative-optimization-of-patient-expectations-improves-long-term-outcome-in-heart-surgery-patients-results-of-the-randomized-controlled-psy-heart-trial
#4
Winfried Rief, Meike C Shedden-Mora, Johannes A C Laferton, Charlotte Auer, Keith J Petrie, Stefan Salzmann, Manfred Schedlowski, Rainer Moosdorf
BACKGROUND: Placebo effects contribute substantially to outcome in most fields of medicine. While clinical trials typically try to control or minimize these effects, the potential of placebo mechanisms to improve outcome is rarely used. Patient expectations about treatment efficacy and outcome are major mechanisms that contribute to these placebo effects. We aimed to optimize these expectations to improve outcome in patients undergoing coronary artery bypass graft (CABG) surgery. METHODS: In a prospective three-arm randomized clinical trial with a 6 month follow-up, 124 patients scheduled for CABG surgery were randomized to either a brief psychological pre-surgery intervention to optimize outcome expectations (EXPECT); or a psychological control intervention focusing on emotional support and general advice, but not on expectations (SUPPORT); or to standard medical care (SMC)...
January 10, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28050052/the-hematologic-definition-of-monoclonal-gammopathy-of-undetermined-significance-in-relation-to-paraproteinemic-keratopathy-an-american-ophthalmological-society-thesis
#5
Walter Lisch, Joanna Wasielica-Poslednik, Tero Kivelä, Ursula Schlötzer-Schrehardt, Jens M Rohrbach, Walter Sekundo, Uwe Pleyer, Christina Lisch, Alexander Desuki, Heidi Rossmann, Jayne S Weiss
PURPOSE: To determine if paraproteinemic keratopathy (PPK) in the setting of monoclonal gammopathy of undetermined significance (MGUS) causes distinct patterns of corneal opacification that can be distinguished from hereditary, immunologic, or inflammatory causes. METHODS: A retrospective, interventional study of patients showed distinct bilateral opacity patterns of the cornea at the eye clinics of Hanau, Mainz, Helsinki, Marburg, and Berlin between 1993 and 2015...
August 2016: Transactions of the American Ophthalmological Society
https://www.readbyqxmd.com/read/28027897/relevance-of-dihydropyrimidine-dehydrogenase-and-thymidylate-synthase-in-patients-with-pancreatic-neuroendocrine-neoplasms-treated-with-5-fu-based-chemotherapy
#6
S Krug, M Boch, W Nimphius, T M Gress, P Michl, A Rinke
BACKGROUND: Chemotherapy with 5-FU and Streptozotocin (STZ) is recommended as first-line treatment in patients with metastatic pancreatic neuroendocrine neoplasms (PNEN). However, data about biomarkers involved in the 5-FU metabolism to predict response are still limited. OBJECTIVES: Evaluation of clinicopathological features and potential predictive and prognostic markers of patients with PNEN treated with 5-FU based regimens. PATIENTS AND METHODS: We retrospectively analyzed 41 patients with PNEN who were treated at the University Hospital Marburg between 2000 and 2013...
December 22, 2016: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28012899/corning-hyperflask-%C3%A2-for-viral-amplification-and-production-of-diagnostic-reagents
#7
Brian J Kearney, Matthew A Voorhees, Priscilla L Williams, Scott P Olschner, Cynthia A Rossi, Randal J Schoepp
Viral preparations are essential components in diagnostic research and development. The production of large quantities of virus traditionally is done by infecting numerous tissue culture flasks or roller bottles, which require large incubators and/or roller bottle racks. The Corning HYPERFlask(®) is a multilayer flask that uses a gas permeable film to provide gas exchange between the cells and culture medium and the atmospheric environment. This study evaluated the suitability of the HYPERFlask for production of Lassa, Ebola, Bundibugyo, Reston, and Marburg viruses and compared it to more traditional methods using tissue culture flasks and roller bottles...
December 21, 2016: Journal of Virological Methods
https://www.readbyqxmd.com/read/28007224/efficacy-of-surgical-safety-checklist-assessing-orthopaedic-surgical-implant-readiness
#8
Benjamin G Thomasson, David Fuller, John Mansour, Robert Marburger, Erin Pukenas
INTRODUCTION: Our institution employs a Surgical Universal Protocol Preoperative Checklist in accordance with World Health Organization guidelines to promote patient safety. It is used in part to evaluate orthopaedic surgical equipment and implant readiness prior to the initiation of each surgical case. Our goal is to measure the preoperative checklist's efficacy in assessing orthopaedic equipment readiness preoperatively and its ability to prevent orthopaedic equipment failures (OEF)...
December 2016: Healthcare
https://www.readbyqxmd.com/read/27979676/ebola-virus-derived-g-quadruplexes-thiazole-orange-interaction
#9
Petra Krafčíková, Erika Demkovičová, Viktor Víglaský
The Ebola and Marburg viruses are some of the deadliest viruses in the world. In this study a series of G-rich DNA sequences derived from these types of viruses which possess the potential to form G-quadruplex structures are analyzed. A set of DNA oligonucleotides derived from original viral isolates was used as a representative modeling sequence with which to demonstrate the influence of thiazole orange on circular dichroism (CD) spectral profiles. The results show the unique profile of the induced CD (ICD) signal in the visible region caused by interactions between the ligand and G-quadruplexes...
December 13, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27976688/a-hamster-model-for-marburg-virus-infection-accurately-recapitulates-marburg-hemorrhagic-fever
#10
Andrea Marzi, Logan Banadyga, Elaine Haddock, Tina Thomas, Kui Shen, Eva J Horne, Dana P Scott, Heinz Feldmann, Hideki Ebihara
Marburg virus (MARV), a close relative of Ebola virus, is the causative agent of a severe human disease known as Marburg hemorrhagic fever (MHF). No licensed vaccine or therapeutic exists to treat MHF, and MARV is therefore classified as a Tier 1 select agent and a category A bioterrorism agent. In order to develop countermeasures against this severe disease, animal models that accurately recapitulate human disease are required. Here we describe the development of a novel, uniformly lethal Syrian golden hamster model of MHF using a hamster-adapted MARV variant Angola...
December 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27930961/novel-activities-by-ebolavirus-and-marburgvirus-interferon-antagonists-revealed-using-a-standardized-in-vitro-reporter-system
#11
Jonathan C Guito, César G Albariño, Ayan K Chakrabarti, Jonathan S Towner
Filoviruses are highly lethal in humans and nonhuman primates, likely due to potent antagonism of host interferon (IFN) responses early in infection. Filoviral protein VP35 is implicated as the major IFN induction antagonist, while Ebola virus (EBOV) VP24 or Marburg virus (MARV) VP40 are known to block downstream IFN signaling. Despite progress elucidating EBOV and MARV antagonist function, those for most other filoviruses, including Reston (RESTV), Sudan (SUDV), Taï Forest (TAFV), Bundibugyo (BDBV) and Ravn (RAVV) viruses, remain largely neglected...
January 15, 2017: Virology
https://www.readbyqxmd.com/read/27918527/induction-and-suppression-of-antiviral-rna-interference-by-influenza-a-virus-in-mammalian-cells
#12
Yang Li, Megha Basavappa, Jinfeng Lu, Shuwei Dong, D Alexander Cronkite, John T Prior, Hans-Christian Reinecker, Paul Hertzog, Yanhong Han, Wan-Xiang Li, Sihem Cheloufi, Fedor V Karginov, Shou-Wei Ding, Kate L Jeffrey
Influenza A virus (IAV) causes annual epidemics and occasional pandemics, and is one of the best-characterized human RNA viral pathogens(1). However, a physiologically relevant role for the RNA interference (RNAi) suppressor activity of the IAV non-structural protein 1 (NS1), reported over a decade ago(2), remains unknown(3). Plant and insect viruses have evolved diverse virulence proteins to suppress RNAi as their hosts produce virus-derived small interfering RNAs (siRNAs) that direct specific antiviral defence(4-7) by an RNAi mechanism dependent on the slicing activity of Argonaute proteins (AGOs)(8,9)...
December 5, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27909582/ebola-research-funding-a-systematic-analysis-1997-2015
#13
Joseph Ra Fitchett, Amos Lichtman, Damilola T Soyode, Ariel Low, Jimena Villar de Onis, Michael G Head, Rifat Atun
BACKGROUND: The latest outbreak of Ebola in West Africa overwhelmed the affected countries, with the impact on health extending far beyond Ebola-related deaths that have exceeded 11 000. The need to promptly mobilise resources to control emerging infections is widely recognized. Yet, data on research funding for emerging infections remains inadequately documented. METHODS: We defined research investment as all funding flows for Ebola and/or Marburg virus from 1997 to April 2015 whose primary purpose was to advance knowledge and new technologies to prevent or cure disease...
December 2016: Journal of Global Health
https://www.readbyqxmd.com/read/27908828/assessment-of-the-potential-for-host-targeted-iminosugars-uv-4-and-uv-5-activity-against-filovirus-infections-in%C3%A2-vitro-and-in%C3%A2-vivo
#14
Kelly L Warfield, Travis K Warren, Xiangguo Qiu, Jay Wells, Chad E Mire, Joan B Geisbert, Kelly S Stuthman, Nicole L Garza, Sean A Van Tongeren, Amy C Shurtleff, Krystle N Agans, Gary Wong, Michael V Callahan, Thomas W Geisbert, Brennan Klose, Urban Ramstedt, Anthony M Treston
Iminosugars are host-directed antivirals with broad-spectrum activity. The iminosugar, N-butyl-deoxynojirimycin (NB-DNJ or Miglustat(®)), is used in humans for treatment of Gaucher's disease and has mild antiviral properties. More potent analogs of NB-DNJ have been generated and have demonstrated activity against a variety of viruses including flaviviruses, influenza, herpesviruses and filoviruses. In the current study, a panel of analogs based on NB-DNJ was analyzed for activity against Ebola (EBOV) and Marburg viruses (MARV)...
February 2017: Antiviral Research
https://www.readbyqxmd.com/read/27887599/how-severe-and-prevalent-are-ebola-and-marburg-viruses-a-systematic-review-and-meta-analysis-of-the-case-fatality-rates-and-seroprevalence
#15
Luke Nyakarahuka, Clovice Kankya, Randi Krontveit, Benjamin Mayer, Frank N Mwiine, Julius Lutwama, Eystein Skjerve
BACKGROUND: Ebola and Marburg virus diseases are said to occur at a low prevalence, but are very severe diseases with high lethalities. The fatality rates reported in different outbreaks ranged from 24-100%. In addition, sero-surveys conducted have shown different seropositivity for both Ebola and Marburg viruses. We aimed to use a meta-analysis approach to estimate the case fatality and seroprevalence rates of these filoviruses, providing vital information for epidemic response and preparedness in countries affected by these diseases...
November 25, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27847355/crystal-structure-of-the-marburg-virus-vp35-oligomerization-domain
#16
Jessica F Bruhn, Robert N Kirchdoerfer, Sarah M Urata, Sheng Li, Ian J Tickle, Gérard Bricogne, Erica Ollmann Saphire
: Marburg virus (MARV) is a highly pathogenic filovirus that is classified in a genus distinct from that of Ebola virus (EBOV) (genera Marburgvirus and Ebolavirus, respectively). Both viruses produce a multifunctional protein termed VP35, which acts as a polymerase cofactor, a viral protein chaperone, and an antagonist of the innate immune response. VP35 contains a central oligomerization domain with a predicted coiled-coil motif. This domain has been shown to be essential for RNA polymerase function...
January 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27811840/notes-from-the-field-rift-valley-fever-response-kabale-district-uganda-march-2016
#17
Annabelle de St Maurice, Luke Nyakarahuka, Lawrence Purpura, Elizabeth Ervin, Alex Tumusiime, Stephen Balinandi, Jackson Kayondo, Sophia Mulei, Anne Marion Namutebi, Patrick Tusiime, Steven Wiersma, Stuart Nichol, Pierre Rollin, John Klena, Barbara Knust, Trevor Shoemaker
On March 9, 2016, a male butcher from Kabale District, Uganda, aged 45 years, reported to the Kabale Regional Referral Hospital with fever, fatigue, and headache associated with black tarry stools and bleeding from the nose. One day later, a student aged 16 years from a different sub-county in Kabale District developed similar symptoms and was admitted to the same hospital. The student also had a history of contact with livestock. Blood specimens collected from both patients were sent for testing for Marburg virus disease, Ebola virus disease, Rift Valley fever (RVF), and Crimean Congo Hemorrhagic fever at the Uganda Virus Research Institute, as part of the viral hemorrhagic fevers surveillance program...
November 4, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27807228/tim-1-promotes-hepatitis-c-virus-cell-attachment-and-infection
#18
Jing Wang, Luhua Qiao, Zhouhua Hou, Guangxiang Luo
: Human TIM and TAM family proteins were recently found to serve as phosphatidylserine (PS) receptors which promote infections by many different viruses, including dengue virus, West Nile virus, Ebola virus, Marburg virus, and Zika virus. In the present study, we provide substantial evidence demonstrating that TIM-1 is important for efficient infection by hepatitis C virus (HCV). The knockdown of TIM-1 expression significantly reduced HCV infection but not HCV RNA replication. Likewise, TIM-1 knockout in Huh-7...
January 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27755595/the-ebola-virus-vp30-np-interaction-is-a-regulator-of-viral-rna-synthesis
#19
Robert N Kirchdoerfer, Crystal L Moyer, Dafna M Abelson, Erica Ollmann Saphire
Filoviruses are capable of causing deadly hemorrhagic fevers. All nonsegmented negative-sense RNA-virus nucleocapsids are composed of a nucleoprotein (NP), a phosphoprotein (VP35) and a polymerase (L). However, the VP30 RNA-synthesis co-factor is unique to the filoviruses. The assembly, structure, and function of the filovirus RNA replication complex remain unclear. Here, we have characterized the interactions of Ebola, Sudan and Marburg virus VP30 with NP using in vitro biochemistry, structural biology and cell-based mini-replicon assays...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27753082/costs-and-cost-driving-factors-for-acute-treatment-of-adults-with-status-epilepticus-a-multicenter-cohort-study-from-germany
#20
Lena-Marie Kortland, Anne Alfter, Oliver Bähr, Barbara Carl, Richard Dodel, Thomas M Freiman, Kristina Hubert, Kolja Jahnke, Susanne Knake, Felix von Podewils, Jens-Peter Reese, Uwe Runge, Christian Senft, Helmuth Steinmetz, Felix Rosenow, Adam Strzelczyk
OBJECTIVE: To provide first data on inpatient costs and cost-driving factors due to nonrefractory status epilepticus (NSE), refractory status epilepticus (RSE), and super-refractory status epilepticus (SRSE). METHODS: In 2013 and 2014, all adult patients treated due to status epilepticus (SE) at the university hospitals in Frankfurt, Greifswald, and Marburg were analyzed for healthcare utilization. RESULTS: We evaluated 341 admissions in 316 patients (65...
December 2016: Epilepsia
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