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ebola virus disease

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https://www.readbyqxmd.com/read/29352230/histology-immunohistochemistry-and-in-situ-hybridization-reveal-overlooked-ebola-virus-target-tissues-in-the-ebola-virus-disease-guinea-pig-model
#1
Timothy K Cooper, Louis Huzella, Joshua C Johnson, Oscar Rojas, Sri Yellayi, Mei G Sun, Sina Bavari, Amanda Bonilla, Randy Hart, Peter B Jahrling, Jens H Kuhn, Xiankun Zeng
Survivors of Ebola virus infection may become subclinically infected, but whether animal models recapitulate this complication is unclear. Using histology in combination with immunohistochemistry and in situ hybridization in a retrospective review of a guinea pig confirmation-of-virulence study, we demonstrate for the first time Ebola virus infection in hepatic oval cells, the endocardium and stroma of the atrioventricular valves and chordae tendinae, satellite cells of peripheral ganglia, neurofibroblasts and Schwann cells of peripheral nerves and ganglia, smooth muscle cells of the uterine myometrium and vaginal wall, acini of the parotid salivary glands, thyroid follicular cells, adrenal medullary cells, pancreatic islet cells, endometrial glandular and surface epithelium, and the epithelium of the vagina, penis and, prepuce...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351152/ebola-infection-in-pregnancy-a-global-perspective-and-lessons-learned
#2
Lisa B Haddad, John Horton, Bruce S Ribner, Denise J Jamieson
The 2014 to 2016 Ebola outbreak, primarily based in 3 West African countries, had far-reaching global effects. Importantly, the crisis highlighted large gaps in reproductive health services in affected countries and inadequate health care system preparedness for obstetrical patients in the setting of highly contagious infectious diseases. We aim to review Ebola virus effects with a focus on the obstetrical implications in the context of this recent Ebola outbreak, discuss the lessons learned following this outbreak and propose current measures specific to obstetrics that should be considered in preparation for the next concerning emergent infectious disease...
March 2018: Clinical Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29350151/risk-communication-and-ebola-specific-knowledge-and-behavior-during-2014-2015-outbreak-sierra-leone
#3
Maike Winters, Mohamed F Jalloh, Paul Sengeh, Mohammad B Jalloh, Lansana Conteh, Rebecca Bunnell, Wenshu Li, Zangin Zeebari, Helena Nordenstedt
We assessed the effect of information sources on Ebola-specific knowledge and behavior during the 2014-2015 Ebola virus disease outbreak in Sierra Leone. We pooled data from 4 population-based knowledge, attitude, and practice surveys (August, October, and December 2014 and July 2015), with a total of 10,604 respondents. We created composite variables for exposures (information sources: electronic, print, new media, government, community) and outcomes (knowledge and misconceptions, protective and risk behavior) and tested associations by using logistic regression within multilevel modeling...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29350145/development-of-a-pediatric-ebola-predictive-score-sierra-leone1
#4
Felicity Fitzgerald, Kevin Wing, Asad Naveed, Musa Gbessay, J C G Ross, Francesco Checchi, Daniel Youkee, Mohamed Boie Jalloh, David E Baion, Ayeshatu Mustapha, Hawanatu Jah, Sandra Lako, Shefali Oza, Sabah Boufkhed, Reynold Feury, Julia Bielicki, Elizabeth Williamson, Diana M Gibb, Nigel Klein, Foday Sahr, Shunmay Yeung
We compared children who were positive for Ebola virus disease (EVD) with those who were negative to derive a pediatric EVD predictor (PEP) score. We collected data on all children <13 years of age admitted to 11 Ebola holding units in Sierra Leone during August 2014-March 2015 and performed multivariable logistic regression. Among 1,054 children, 309 (29%) were EVD positive and 697 (66%) EVD negative, with 48 (5%) missing. Contact history, conjunctivitis, and age were the strongest positive predictors for EVD...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29346369/the-rise-of-neglected-tropical-diseases-in-the-new-texas
#5
REVIEW
Peter J Hotez
Within the last five years, the State of Texas has experienced either transmission or outbreaks of Ebola, chikungunya, West Nile, and Zika virus infections. Autochthonous transmission of neglected parasitic and bacterial diseases has also become increasingly reported. The rise of such emerging and neglected tropical diseases (NTDs) has not occurred by accident but instead reflects rapidly evolving changes and shifts in a "new" Texas beset by modern and globalizing forces that include rapid expansions in population together with urbanization and human migrations, altered transportation patterns, climate change, steeply declining vaccination rates, and a new paradigm of poverty known as "blue marble health...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29341945/lessons-about-causes-and-management-of-an-ebola-outbreak
#6
Aida Elargoubi, Anis W Belhaj Khelifa, Ons Haddad, Salma Mhalla, Nabil Sakly, Maha Mastouri
Ebola virus disease (EVD) is one of the deadliest viral diseases. It is characterized by a high mortality rate due to the lack of effective and safe treatments or vaccines and its ability to spread at an unstoppable pace. The West Africa outbreak ended but the disease may strike again at any time. The latest epidemic was, by far, the deadliest to date. The most concern was why this outbreak was so different from the previous ones. We proposed in this review firstly to summarize the principal causes of its unprecedented spread and secondly to identify the steps for an effective management approach of a future Ebola outbreak...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29340221/recombinant-antibodies-to-the-ebola-virus-glycoprotein
#7
A A Panina, I G Dementieva, T K Aliev, V A Toporova, D S Balabashin, M N Bokov, L P Pozdnyakova, O B Shchemchukova, D A Dolgikh, P G Sveshnikov, M P Kirpichnikov
Currently, there are no approved therapies for targeted prevention and treatment of Ebola hemorrhagic fever. In the present work, we describe the development of a eukaryotic expression system for the production of three full-length chimeric antibodies (IgG1-kappa isotypes) GPE118, GPE325, and GPE534 to the recombinant glycoprotein of the Ebola virus (EBOV GP), which is a key factor in the pathogenicity of the disease. The immunochemical properties of the obtained antibodies were studied by immunoblotting and indirect, direct, and competitive ELISA using the recombinant EBOV proteins rGPdTM, NP, and VP40...
October 2017: Acta Naturae
https://www.readbyqxmd.com/read/29339750/a-single-dose-of-modified-vaccinia-ankara-expressing-ebola-virus-like-particles-protects-nonhuman-primates-from-lethal-ebola-virus-challenge
#8
Arban Domi, Friederike Feldmann, Rahul Basu, Nathanael McCurley, Kyle Shifflett, Jackson Emanuel, Michael S Hellerstein, Farshad Guirakhoo, Chiara Orlandi, Robin Flinko, George K Lewis, Patrick W Hanley, Heinz Feldmann, Harriet L Robinson, Andrea Marzi
Ebola virus (EBOV), isolate Makona, was the causative agent of the West African epidemic devastating predominantly Guinea, Liberia and Sierra Leone from 2013-2016. While several experimental vaccine and treatment approaches have been accelerated through human clinical trials, there is still no approved countermeasure available against this disease. Here, we report the construction and preclinical efficacy testing of a novel recombinant modified vaccinia Ankara (MVA)-based vaccine expressing the EBOV-Makona glycoprotein GP and matrix protein VP40 (MVA-EBOV)...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29333950/willingness-to-pay-for-an-ebola-vaccine-during-the-2014-2016-ebola-outbreak-in-west-africa-results-from-a-u-s-national-sample
#9
Julia E Painter, Michael E von Fricken, Suyane Viana de O Mesquita, Ralph J DiClemente
The 2014-2016 Ebola virus outbreak in West Africa led to advances in the development of vaccines against Ebola. This study examined factors associated with willingness to pay for an Ebola vaccine among a U.S. national sample during the recent Ebola outbreak. From April 30-May 8, 2015, a national survey was conducted using the GfK Group's KnowlegePanel®. Main outcome measures included willingness to pay at least $1; more than $50; and more than $100 for an Ebola vaccine. Analyses were conducted using weighted multivariable logistic regression...
January 15, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29333037/curcumin-and-natural-derivatives-inhibit-ebola-viral-proteins-an-in-silico-approach
#10
Shruti Baikerikar
Background: Ebola viral disease is a severe and mostly fatal disease in humans caused by Ebola virus. This virus belongs to family Filoviridae and is a single-stranded negative-sense virus. There is no single treatment for this disease which puts forth the need to identify new therapy to control and treat this fatal condition. Curcumin, one of the bioactives of turmeric, has proven antiviral property. Objective: The current study evaluates the inhibitory activity of curcumin, bisdemethoxycurcumin, demethoxycurcumin, and tetrahydrocurcumin against Zaire Ebola viral proteins (VPs)...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29332829/synchronous-detection-of-ebolavirus-conserved-rna-sequences-and-ebolavirus-encoded-mirna-like-fragment-based-on-a-zwitterionic-copper-ii-metal-organic-framework
#11
Gui-Hua Qiu, Zi-Hua Weng, Pei-Pei Hu, Wen-Jun Duan, Bao-Ping Xie, Bin Sun, Xiao-Yan Tang, Jin-Xiang Chen
From a three-dimensional (3D) metal-organic framework (MOF) of {[Cu(Cmdcp)(phen)(H2O)]2·9H2O}n (1, H3CmdcpBr = N-carboxymethyl-(3,5-dicarboxyl)pyridinium bromide, phen = phenanthroline), a sensitive and selective fluorescence sensor has been developed for the simultaneous detection of ebolavirus conserved RNA sequences and ebolavirus-encoded microRNA-like (miRNA-like) fragment. The results from molecular dynamics simulation confirmed that MOF 1 absorbs carboxyfluorescein (FAM)-tagged and 5(6)-carboxyrhodamine, triethylammonium salt (ROX)-tagged probe ss-DNA (probe DNA, P-DNA) by π…π stacking and hydrogen bonding, as well as additional electrostatic interactions to form a sensing platform of P-DNAs@1 with quenched FAM and ROX fluorescence...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29329455/serologic-evidence-of-ebolavirus-infection-in-a-population-with-no-history-of-outbreaks-in-the-democratic-republic-of-the-congo
#12
Sabue Mulangu, Vivian H Alfonso, Nicole A Hoff, Reena H Doshi, Prime Mulembakani, Neville K Kisalu, Emile Okitolonda-Wemakoy, Benoit Ilunga Kebela, Hadar Marcus, Joseph Shiloach, Je Nie Phue, Linda L Wright, Jean-Jacques Muyembe-Tamfum, Nancy J Sullivan, Anne W Rimoin
Background: Previous studies suggest that cases of Ebola virus disease (EVD) may go unreported because they are asymptomatic or unrecognized, but evidence is limited by study designs and sample size. Methods: A large population-based survey was conducted (n = 3415) to assess animal exposures and behaviors associated with Ebolavirus antibody prevalence in rural Kasai Oriental province of the Democratic Republic of Congo (DRC). Fourteen villages were randomly selected and all healthy individuals ≥1 year of age were eligible...
January 10, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29325149/anatomy-of-a-hotspot-chain-and-seroepidemiology-of-ebola-virus-transmission-sukudu-sierra-leone-2015-16
#13
J Daniel Kelly, Mohamed Bailor Barrie, Annelies W Mesman, Sahr Karku, Komba Quiwa, Michael Drasher, Gabriel Warren Slough, Kerry Dierberg, Songor Koedoyoma, Christina P Lindan, James Holland Jones, Gabriel Chamie, Lee Worden, Bryan Greenhouse, Sheri D Weiser, Travis C Porco, George W Rutherford, Eugene T Richardson
Studies have yet to include minimally symptomatic Ebola virus (EBOV) infections and unrecognized Ebola virus disease (EVD) in Ebola-related transmission chains and epidemiologic risk estimates. We conducted a cross-sectional, sero-epidemiological survey from October 2015 to January 2016 among 221 individuals living in quarantined households from November 2014 to February 2015 during the Ebola outbreak in the village of Sukudu, Sierra Leone. Of 48 EBOV infected-persons, 25% (95%CI, 14-40%) had minimally symptomatic EBOV infections and 4% (95%CI, 1-14%) were unrecognized EVD cases...
January 9, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29325025/towards-an-understanding-of-resilience-responding-to-health-systems-shocks
#14
Johanna Hanefeld, Susannah Mayhew, Helena Legido-Quigley, Frederick Martineau, Marina Karanikolos, Karl Blanchet, Marco Liverani, Esther Yei Mokuwa, Gillian McKay, Dina Balabanova
The recent outbreak of Ebola Virus Disease (EVD) in West Africa has drawn attention to the role and responsiveness of health systems in the face of shock. It brought into sharp focus the idea that health systems need not only to be stronger but also more 'resilient'. In this article, we argue that responding to shocks is an important aspect of resilience, examining the health system behaviour in the face of four types of contemporary shocks: the financial crisis in Europe from 2008 onwards; climate change disasters; the EVD outbreak in West Africa 2013-16; and the recent refugee and migration crisis in Europe...
January 9, 2018: Health Policy and Planning
https://www.readbyqxmd.com/read/29306614/emergency-nurses-and-department-preparedness-for-an-ebola-outbreak-a-narrative-literature-review
#15
REVIEW
Mihirika Sds Pincha Baduge, Julia Morphet, Cheryle Moss
INTRODUCTION: The 2014 Ebola Virus Disease outbreak in West Africa triggered a public health emergency of international concern. Emergency departments worldwide responded with Ebola containment and preparation measures. This paper reports a literature inquiry into how emergency departments and emergency nurses prepared to manage the Ebola risk. METHOD: Narrative review was the method used. Guidelines (n = 5) for organisational and emergency department preparedness were retrieved from relevant websites...
January 3, 2018: International Emergency Nursing
https://www.readbyqxmd.com/read/29304039/establishing-ebola-virus-disease-evd-diagnostics-using-genexpert-technology-at-a-mobile-laboratory-in-liberia-impact-on-outbreak-response-case-management-and-laboratory-systems-strengthening
#16
Philomena Raftery, Orla Condell, Christine Wasunna, Jonathan Kpaka, Ruth Zwizwai, Mahmood Nuha, Mosoka Fallah, Maxwell Freeman, Victoria Harris, Mark Miller, April Baller, Moses Massaquoi, Victoria Katawera, John Saindon, Philip Bemah, Esther Hamblion, Evelyn Castle, Desmond Williams, Alex Gasasira, Tolbert Nyenswah
The 2014-16 Ebola Virus Disease (EVD) outbreak in West Africa highlighted the necessity for readily available, accurate and rapid diagnostics. The magnitude of the outbreak and the re-emergence of clusters of EVD cases following the declaration of interrupted transmission in Liberia, reinforced the need for sustained diagnostics to support surveillance and emergency preparedness. We describe implementation of the Xpert Ebola Assay, a rapid molecular diagnostic test run on the GeneXpert platform, at a mobile laboratory in Liberia and the subsequent impact on EVD outbreak response, case management and laboratory system strengthening...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29303737/initiation-and-publication-time-lags-of-treatment-trials-for-ebola-virus-disease
#17
Piero L Olliaro
No abstract text is available yet for this article.
January 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29303554/a-serological-point-of-care-test-for-the-detection-of-igg-antibodies-against-ebola-virus-in-human-survivors
#18
Polina Brangel, Ariel Sobarzo, Claudio Parolo, Benjamin S Miller, Philip D Howes, Sigal Gelkop, Julius J Lutwama, John M Dye, Rachel A McKendry, Leslie Lobel, Molly M Stevens
Ebola virus disease causes widespread and highly fatal epidemics in human populations. Today, there is still great need for point-of-care tests for diagnosis, patient management and surveillance, both during and post outbreaks. We present a point-of-care test comprising an immunochromatographic strip and a smartphone reader, which detects and semiquantifies Ebola-specific antibodies in human survivors. We developed a Sudan virus glycoprotein monoplex platform and validated it using sera from 90 human survivors and 31 local noninfected controls...
January 5, 2018: ACS Nano
https://www.readbyqxmd.com/read/29302150/the-forgotten-plague-psychiatric-manifestations-of-ebola-zika-and-emerging-infectious-diseases
#19
REVIEW
Veronica Tucci, Nidal Moukaddam, Jonathan Meadows, Suhal Shah, Sagar C Galwankar, G Bobby Kapur
The media and public health generally focus on the biological and physical ramifications of epidemics. Mental health issues that coincide with emerging diseases and epidemics are rarely examined and sometimes, even eschewed due to cultural considerations. Psychiatric manifestations of various infectious diseases, especially with a focus on Ebola Virus disease (EVD) and Zika Virus, are discussed in this commentary to illustrate the continued need of care after the resolution of the actual illness. Various infectious diseases have associations with mental illness, such as an increased risk of obsessive-compulsive disorders and Tourette syndrome in children with Group B streptococcal infection...
October 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/29300152/different-effects-of-two-mutations-on-the-infectivity-of-ebola-virus-glycoprotein-in-nine-mammalian-species
#20
Yohei Kurosaki, Mahoko Takahashi Ueda, Yusuke Nakano, Jiro Yasuda, Yoshio Koyanagi, Kei Sato, So Nakagawa
Ebola virus (EBOV), which belongs to the genus Ebolavirus, causes a severe and often fatal infection in primates, including humans, whereas Reston virus (RESTV) only causes lethal disease in non-human primates. Two amino acids (aa) at positions 82 and 544 of the EBOV glycoprotein (GP) are involved in determining viral infectivity. However, it remains unclear how these two aa residues affect the infectivity of Ebolavirus species in various hosts. Here we performed viral pseudotyping experiments with EBOV and RESTV GP derivatives in 10 cell lines from 9 mammalian species...
January 4, 2018: Journal of General Virology
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