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https://www.readbyqxmd.com/read/28820067/a-comprehensive-review-on-ebola-ebov-virus-future-prospects
#1
Dr Abdru Rauf, Muhammad, Abdur Rauf, Ahsan Khan, Muhammad Rizwan, Seema Patel, Haroon Khan, Adel Mahasneh, Mohammad S Mubarak
Ebola virus (EBOV) was discovered for the first time in 1976. It belongs to the family Filoviridae, which causes hemorrhagic fever that could lead to death in a few days. West Africa faced a major outbreak where symptoms appeared in the form of chills, myalgia, fever, diarrhea, and vomiting, and the disease finally reached a severe state as a result of hemorrhagic complications and failure of multiple organs. EBOV spreads by contact with body fluids of an infected person such as blood, saliva, urine, and seminal fluid, and also spreads by a contact with contaminated surfaces...
August 16, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28818113/respiratory-syncytial-virus-rsv-entry-is-inhibited-by-serine-protease-inhibitor-aebsf-when-present-during-an-early-stage-of-infection
#2
Winke Van der Gucht, Annelies Leemans, Marjorie De Schryver, Annick Heykers, Guy Caljon, Louis Maes, Paul Cos, Peter L Delputte
BACKGROUND: Host proteases have been shown to play important roles in many viral activities such as entry, uncoating, viral protein production and disease induction. Therefore, these cellular proteases are putative targets for the development of antivirals that inhibit their activity. Host proteases have been described to play essential roles in Ebola, HCV, HIV and influenza, such that specific protease inhibitors are able to reduce infection. RSV utilizes a host protease in its replication cycle but its potential as antiviral target is unknown...
August 17, 2017: Virology Journal
https://www.readbyqxmd.com/read/28812539/investigating-ebola-virus-pathogenicity-using-molecular-dynamics
#3
Morena Pappalardo, Francesca Collu, James Macpherson, Martin Michaelis, Franca Fraternali, Mark N Wass
BACKGROUND: Ebolaviruses have been known to cause deadly disease in humans for 40 years and have recently been demonstrated in West Africa to be able to cause large outbreaks. Four Ebolavirus species cause severe disease associated with high mortality in humans. Reston viruses are the only Ebolaviruses that do not cause disease in humans. Conserved amino acid changes in the Reston virus protein VP24 compared to VP24 of other Ebolaviruses have been suggested to alter VP24 binding to host cell karyopherins resulting in impaired inhibition of interferon signalling, which may explain the difference in human pathogenicity...
August 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28810165/human-immune-system-mouse-models-of-ebola-virus-infection
#4
REVIEW
Jessica R Spengler, Joseph Prescott, Heinz Feldmann, Christina F Spiropoulou
Human immune system (HIS) mice, immunodeficient mice engrafted with human cells (with or without donor-matched tissue), offer a unique opportunity to study pathogens that cause disease predominantly or exclusively in humans. Several HIS mouse models have recently been used to study Ebola virus (EBOV) infection and disease. The results of these studies are encouraging and support further development and use of these models in Ebola research. HIS mice provide a small animal model to study EBOV isolates, investigate early viral interactions with human immune cells, screen vaccines and therapeutics that modulate the immune system, and investigate sequelae in survivors...
August 11, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28810081/a-risk-analysis-approach-to-prioritizing-epidemics-ebola-virus-disease-in-west-africa-as-a-case-study
#5
Whenayon Simeon Ajisegiri, Abrar Ahmad Chughtai, C Raina MacIntyre
The 2014 Ebola virus disease (EVD) outbreak affected several countries worldwide, including six West African countries. It was the largest Ebola epidemic in the history and the first to affect multiple countries simultaneously. Significant national and international delay in response to the epidemic resulted in 28,652 cases and 11,325 deaths. The aim of this study was to develop a risk analysis framework to prioritize rapid response for situations of high risk. Based on findings from the literature, sociodemographic features of the affected countries, and documented epidemic data, a risk scoring framework using 18 criteria was developed...
August 15, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28807685/an-rna-polymerase-ii-driven-ebola-virus-minigenome-system-as-an-advanced-tool-for-antiviral-drug-screening
#6
Emily V Nelson, Jennifer R Pacheco, Adam Hume, Tessa N Cressey, Laure R Deflubé, John B Ruedas, John H Connor, Hideki Ebihara, Elke Mühlberger
Ebola virus (EBOV) causes a severe disease in humans with the potential for significant international public health consequences. Currently, treatments are limited to experimental vaccines and therapeutics. Therefore, research into prophylaxis and antiviral strategies to combat EBOV infections is of utmost importance. The requirement for high containment laboratories to study EBOV infection is a limiting factor for conducting EBOV research. To overcome this issue, minigenome systems have been used as valuable tools to study EBOV replication and transcription mechanisms and to screen for antiviral compounds at biosafety level 2...
August 11, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28807438/synthesis-conformational-study-and-antiviral-activity-of-l-like-neplanocin-derivatives
#7
Qi Chen, Amber Davidson
The l-like enantiomer of 9-(trans-2', trans-3'-dihydroxycyclopent-4'-enyl)-3-deazaadenine (DHCDA) (1), its 3-deaza-3-bromo derivative (3), and the conformational restricted methanocarba (MC) nucleoside analogues (2 and 4) were synthesized. X-ray crystal structures showed the L isomer MC analogue 4 adopts a similar North-like locked conformation as conventional D-MC nucleosides, while the DHCDA analogue 3 preferred south-like conformer. Compounds 1 and 4 showed potent antiviral activity against norovirus, while compound 2 and 3 were less potent or inactive...
August 7, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28806109/reflections-on-leadership-and-governance-from-the-incident-manager-of-liberia-s-ebola-response
#8
Tolbert Nyenswah
The 2014-2016 epidemic of Ebola virus disease occurred in a region with a recent history of civil war, unstable health systems, and widespread poverty. Despite these contextual challenges, the national Ebola response in Liberia controlled transmission under strong leadership that was able to rapidly coordinate activities, to manage local and international players, and to adapt upon recognizing missteps. Such leadership has persisted to improve public health capacity in post-Ebola Liberia. This article highlights the progress made toward developing a resilient health security system with capacity to prevent, detect, and respond to disease threats before they reach epidemic level...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28805465/what-we-are-watching-top-global-infectious-disease-threats-2013-2016-an-update-from-cdc-s-global-disease-detection-operations-center
#9
Kira A Christian, A Danielle Iuliano, Timothy M Uyeki, Eric D Mintz, Stuart T Nichol, Pierre Rollin, J Erin Staples, Ray R Arthur
To better track public health events in areas where the public health system is unable or unwilling to report the event to appropriate public health authorities, agencies can conduct event-based surveillance, which is defined as the organized collection, monitoring, assessment, and interpretation of unstructured information regarding public health events that may represent an acute risk to public health. The US Centers for Disease Control and Prevention's (CDC's) Global Disease Detection Operations Center (GDDOC) was created in 2007 to serve as CDC's platform dedicated to conducting worldwide event-based surveillance, which is now highlighted as part of the "detect" element of the Global Health Security Agenda (GHSA)...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28805464/advancing-preparedness-for-highly-hazardous-contagious-diseases-admitting-10-simulated-patients-with-mers-cov
#10
Angela Vasa, Philip W Smith, Michelle Schwedhelm, Theodore J Cieslak, John Lowe, Christopher J Kratochvil, Elizabeth L Beam, Kate Boulter, Angela Hewlett
The Ebola outbreak of 2014-2016 highlighted the need for the development of a more robust healthcare infrastructure in the United States to provide isolation care for patients infected with a highly hazardous contagious disease. Routine exercises and skills practice are required to effectively and safely prepare care teams to confidently treat this special population of patients. The Nebraska Biocontainment Unit (NBU) at Nebraska Medicine in Omaha has been conducting exercises since 2005 when the unit was opened...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28794491/ebola-virus-vp24-interacts-with-np-to-facilitate-nucleocapsid-assembly-and-genome-packaging
#11
Logan Banadyga, Thomas Hoenen, Xavier Ambroggio, Eric Dunham, Allison Groseth, Hideki Ebihara
Ebola virus causes devastating hemorrhagic fever outbreaks for which no approved therapeutic exists. The viral nucleocapsid, which is minimally composed of the proteins NP, VP35, and VP24, represents an attractive target for drug development; however, the molecular determinants that govern the interactions and functions of these three proteins are still unknown. Through a series of mutational analyses, in combination with biochemical and bioinformatics approaches, we identified a region on VP24 that was critical for its interaction with NP...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791241/ebola-virus-disease-essential-clinical-knowledge
#12
REVIEW
Mahmoud Tawfik Khalafallah, Omar Ali Aboshady, Shaban Ahmed Moawed, Menna Said Ramadan
Since its initial outbreak in 1976, Ebola virus disease (EVD) has affected thousands of people, causing severe illness with high mortality rates. In the absence of a vaccine or effective specific treatment, as well as the lack of early diagnostic and detective methods, the EVD outbreak has generated a significant worldwide health concern. Insufficient health-care system resources, deficient infection control measures, and the shortage of appropriate personal protective equipment acted as amplifiers of the outbreak extension, especially in poorly resourced and unprepared communities...
July 2017: Avicenna Journal of Medicine
https://www.readbyqxmd.com/read/28780227/insights-into-the-immune-manipulation-mechanisms-of-pollen-allergens-by-protein-domain-profiling
#13
Seema Patel, Aruna Rani, Arun Goyal
Plant pollens are airborne allergens, as their inhalation causes immune activation, leading to rhinitis, conjunctivitis, sinusitis and oral allergy syndrome. A myriad of pollen proteins belonging to profilin, expansin, polygalacturonase, glucan endoglucosidase, pectin esterase, and lipid transfer protein class have been identified. In the present in silico study, the protein domains of fifteen pollen sequences were extracted from the UniProt database and submitted to the interactive web tool SMART (Simple Modular Architecture Research Tool), for finding the protein domain profiles...
July 29, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28780120/vaccines-against-ebola-virus
#14
Navin Venkatraman, Daniel Silman, Pedro M Folegatti, Adrian V S Hill
We have just witnessed the largest and most devastating outbreak of Ebola virus disease, which highlighted the urgent need for development of an efficacious vaccine that could be used to curtail future outbreaks. Prior to 2014, there had been limited impetus worldwide to develop a vaccine since the virus was first discovered in 1976. Though too many lives were lost during this outbreak, it resulted in the significantly accelerated clinical development of a number of candidate vaccines through an extraordinary collaborative global effort coordinated by the World Health Organisation (WHO) and involving a number of companies, trial centres, funders, global stakeholders and agencies...
August 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28779833/high-containment-pathogen-preparation-in-the-intensive-care-unit
#15
REVIEW
Brian T Garibaldi, Daniel S Chertow
The recent Ebola virus disease outbreak highlighted the need to build national and worldwide capacity to provide care for patients with highly infectious diseases. Specialized biocontainment units were successful in treating several critically ill patients with Ebola virus disease both in the United States and Europe. Several key principles underlie the care of critically ill patients in a high-containment environment. Environmental factors, staffing, equipment, training, laboratory testing, procedures, and waste management each present unique challenges...
September 2017: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/28771956/knowledge-risk-perception-and-mitigation-measures-towards-ebola-virus-disease-by-potentially-exposed-bushmeat-handlers-in-north-central-nigeria-any-critical-gap
#16
N B Alhaji, S Yatswako, E Y Oddoh
The bushmeat industry has been a topic of increasing importance among public health officials for its influence on zoonotic diseases transmission, such as Ebola virus disease (EVD), a rare and severe infectious disease of humans and non-human primates. This survey assessed knowledge/awareness, risk perceptions and mitigation practices towards EVD among bushmeat handlers in north-central Nigeria. These characteristics are premise to level of preparedness against appropriate risk prevention and control. A questionnaire-based cross-sectional study was conducted between January and December 2015 on 395 bushmeat handlers...
August 3, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28768904/mapping-the-clinical-outcomes-and-genetic-evolution-of-ebola-virus-in-sierra-leone
#17
Tao Li, Hong-Wu Yao, Di Liu, Hong-Guang Ren, Yi Hu, David Kargbo, Yue Teng, Yong-Qiang Deng, Hui-Jun Lu, Xiong Liu, Kun Liu, Li-Qun Fang, Nian-Zhi Ning, Gary Wong, Foday Dafae, Abdul Kamara, AiPing Wu, Tai-Jiao Jiang, Zhan Li, Jie Huang, Yu Sun, Jun Qian, Brima Kargbo, Jia-Fu Jiang, Hui Wang, Wu-Chun Cao
Sierra Leone was the most severely affected country in Western Africa during the 2013-2016 outbreak of Ebola virus disease (EVD). Previous genome surveillance studies have revealed the origin, diversity, and evolutionary dynamics of the Ebola virus (EBOV); however, the information regarding EBOV sequences is insufficient, especially the clinical outcomes, given that the correlation between the clinical outcomes and the genetic evolution of EBOV is still not clear. Here, we collected and curated a comprehensive data set that includes 514 EBOV genome sequences from patients with confirmed EVD (including 60 sequences not previously studied), >87...
August 3, 2017: JCI Insight
https://www.readbyqxmd.com/read/28768877/immunodominance-of-adenovirus-derived-cd8-t-cell-epitopes-interferes-with-the-induction-of-transgene-specific-immunity-in-adenovirus-based-immunization
#18
Dominik Schöne, Camilla Patrizia Hrycak, Sonja Windmann, Dennis Lapuente, Ulf Dittmer, Matthias Tenbusch, Wibke Bayer
Adenovirus (Ad)-based immunization is a popular approach in vaccine development, and Ad-based vectors are renowned for their potential to induce strong CD8(+) T cell responses to the encoded transgene. Surprisingly, we found before in the mouse Friend retrovirus (FV) model that Ad-based immunization did not induce CD8(+) T cell responses to the FV Leader-Gag-derived immunodominant epitope GagL85-93 We show now that induction of GagL85-93-specific CD8(+) T cells was highly effective when Leader-Gag was delivered by plasmid DNA immunization, implying a role for Ad-derived epitopes in mediating unresponsiveness...
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28768865/ubiquitin-ligase-wwp1-interacts-with-ebola-virus-vp40-to-regulate-egress
#19
Ziying Han, Cari A Sagum, Fumio Takizawa, Gordon Ruthel, Corbett T Berry, Jing Kong, J Oriol Sunyer, Bruce D Freedman, Mark T Bedford, Sachdev S Sidhu, Marius Sudol, Ronald N Harty
Ebola virus (EBOV) is a member of the Filoviridae family and the cause of hemorrhagic fever outbreaks. The EBOV VP40 (eVP40) matrix protein is the main driving force for virion assembly and budding. Indeed, expression of eVP40 alone in mammalian cells results in the formation and budding of virus-like particles (VLPs), which mimics the budding process and morphology of authentic, infectious EBOV. To complete the budding process, eVP40 utilizes its PPxY L-domain motif to recruit a specific subset of host proteins containing one or more modular WW-domains that then function to facilitate efficient production and release of eVP40 VLPs...
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28765409/the-uk-s-multidisciplinary-response-to-an-ebola-epidemic
#20
Sian Reece, Colin S Brown, Jake Dunning, Meera A Chand, Maria C Zambon, Michael Jacobs
The West African Ebola virus disease (EVD) epidemic was the largest and most devastating outbreak of EVD the world has ever seen. Its impact was felt far from the shores of Guinea, Liberia and Sierra Leone, with public health systems and clinicians across the globe confronted with an international response both in the affected region and within their own borders. The UK had a prominent role in response efforts, particularly in Sierra Leone. This article highlights how UK academic, health service, military, commercial and public health professionals all played a significant role both at home and abroad...
July 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
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