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Nipah virus

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https://www.readbyqxmd.com/read/29691656/exploration-of-nucleoprotein-%C3%AE-more-and-xd-interactions-of-nipah-and-hendra-viruses
#1
Xu Shang, Wenting Chu, Xiakun Chu, Liufang Xu, Sonia Longhi, Jin Wang
Henipavirus, including Hendra virus (HeV) and Nipah virus (NiV), is a newly discovered human pathogen genus. The nucleoprotein of Henipavirus contains an α-helical molecular recognition element (α-MoRE) that folds upon binding to the X domain (XD) of the phosphoprotein (P). In order to explore the conformational dynamics of free α-MoREs and the underlying binding-folding mechanism with XD, atomic force field-based and hybrid structure-based MD simulations were carried out. In our empirical force field-based simulations, characteristic structures and helicities of α-MoREs reveal the co-existence of partially structured and disordered conformations, as in the case of the well characterized cognate measles virus (MeV) α-MoRE...
April 24, 2018: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29685227/formation-of-high-order-oligomers-is-required-for-functional-bioactivity-of-an-african-bat-henipavirus-surface-glycoprotein
#2
Laura Behner, Louisa Zimmermann, Marc Ringel, Michael Weis, Andrea Maisner
Hendra virus (HeV) and Nipah virus (NiV) are highly pathogenic henipaviruses originating from fruit bats in Australia and Asia that can cause severe infections in livestock and humans. In recent years, also African bat henipaviruses were identified at the nucleic acid level. To assess their potential to replicate in non-bat species, several studies were performed to characterize the two surface glycoproteins required for virus entry and spread by cell-cell fusion. It has been shown that surface expression and fusion-helper function of the receptor-binding G protein of Kumasi virus (KV), the prototypic Ghanaian bat henipavirus, is reduced compared to other non-African henipavirus G proteins...
May 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29643201/nipah-virus-infection
#3
Brenda S P Ang, Tchoyoson C C Lim, Linfa Wang
Nipah virus, a Paramyxovirus related to Hendra first emerged in Malaysia in 1998. Clinical presentation ranges from asymptomatic infection to fatal encephalitis. Malaysia has had no more cases since 1999, but outbreaks continue to occur in Bangladesh and India. In the Malaysia-Singapore outbreak, transmission occurred primarily through contact with pigs while in Bangladesh-India, it is associated with ingestion of contaminated date palm sap and human-to-human transmission. Bats are the main reservoir for this virus which can cause disease in humans and animals...
April 11, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29601894/susceptibility-of-paramyxoviruses-and-filoviruses-to-inhibition-by-2-monofluoro-and-2-difluoro-4-azidocytidine-analogs
#4
Michael K Lo, Paul C Jordan, Sarah Stevens, Yuen Tam, Jerome Deval, Stuart T Nichol, Christina F Spiropoulou
Ebolaviruses, marburgviruses, and henipaviruses are zoonotic pathogens belonging to the Filoviridae and Paramyxoviridae families. They exemplify viruses that continue to spill over into the human population, causing outbreaks characterized by high mortality and significant clinical sequelae in survivors of infection. There are currently no approved small molecule therapeutics for use in humans against these viruses. In this study, we evaluated the antiviral activity of the nucleoside analog 4'-azidocytidine (4'N3 -C, R1479) and its 2'-monofluoro- and 2'-difluoro-modified analogs (2'F-4'N3 -C and 2'diF-4'N3 -C) against representative paramyxoviruses (Nipah virus, Hendra virus, measles virus, and human parainfluenza virus 3) and filoviruses (Ebola virus, Sudan virus, and Ravn virus)...
March 27, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29587789/rescue-and-characterization-of-recombinant-cedar-virus-a-non-pathogenic-henipavirus-species
#5
Eric D Laing, Moushimi Amaya, Chanakha K Navaratnarajah, Yan-Ru Feng, Roberto Cattaneo, Lin-Fa Wang, Christopher C Broder
BACKGROUND: Hendra virus and Nipah virus are zoonotic viruses that have caused severe to fatal disease in livestock and human populations. The isolation of Cedar virus, a non-pathogenic virus species in the genus Henipavirus, closely-related to the highly pathogenic Hendra virus and Nipah virus offers an opportunity to investigate differences in pathogenesis and receptor tropism among these viruses. METHODS: We constructed full-length cDNA clones of Cedar virus from synthetic oligonucleotides and rescued two replication-competent, recombinant Cedar virus variants: a recombinant wild-type Cedar virus and a recombinant Cedar virus that expresses a green fluorescent protein from an open reading frame inserted between the phosphoprotein and matrix genes...
March 27, 2018: Virology Journal
https://www.readbyqxmd.com/read/29566184/fusion-inhibitory-lipopeptides-engineered-for-prophylaxis-of-nipah-virus-in-primates
#6
Cyrille Mathieu, Matteo Porotto, Tiago Figueira, Branka Horvat, Anne Moscona
Background: The emerging zoonotic paramyxovirus Nipah virus (NiV) causes severe respiratory and neurological disease in humans, with high fatality rates. NiV can be transmitted via person-to-person contact, posing a high risk for epidemic outbreaks. However, a broadly applicable approach for human NiV outbreaks in field settings is lacking. Methods: We engineered new antiviral lipopeptides and analyzed in vitro fusion inhibition to identify an optimal candidate for prophylaxis of NiV infection in the lower respiratory tract, and assessed antiviral efficiency in two different animal models...
March 16, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29558524/survival-of-viral-pathogens-in-animal-feed-ingredients-under-transboundary-shipping-models
#7
Scott A Dee, Fernando V Bauermann, Megan C Niederwerder, Aaron Singrey, Travis Clement, Marcelo de Lima, Craig Long, Gilbert Patterson, Maureen A Sheahan, Ana M M Stoian, Vlad Petrovan, Cassandra K Jones, Jon De Jong, Ju Ji, Gordon D Spronk, Luke Minion, Jane Christopher-Hennings, Jeff J Zimmerman, Raymond R R Rowland, Eric Nelson, Paul Sundberg, Diego G Diel
The goal of this study was to evaluate survival of important viral pathogens of livestock in animal feed ingredients imported daily into the United States under simulated transboundary conditions. Eleven viruses were selected based on global significance and impact to the livestock industry, including Foot and Mouth Disease Virus (FMDV), Classical Swine Fever Virus (CSFV), African Swine Fever Virus (ASFV), Influenza A Virus of Swine (IAV-S), Pseudorabies virus (PRV), Nipah Virus (NiV), Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), Swine Vesicular Disease Virus (SVDV), Vesicular Stomatitis Virus (VSV), Porcine Circovirus Type 2 (PCV2) and Vesicular Exanthema of Swine Virus (VESV)...
2018: PloS One
https://www.readbyqxmd.com/read/29522528/development-of-a-reverse-genetics-system-for-sosuga-virus-allows-rapid-screening-of-antiviral-compounds
#8
Stephen R Welch, Ayan K Chakrabarti, Lisa Wiggleton Guerrero, Harley M Jenks, Michael K Lo, Stuart T Nichol, Christina F Spiropoulou, César G Albariño
Sosuga virus (SOSV) is a recently discovered zoonotic paramyxovirus isolated from a single human case in 2012; it has been ecologically and epidemiologically associated with transmission by the Egyptian rousette bat (Rousettus aegyptiacus). Bats have long been recognized as sources of novel zoonotic pathogens, including highly lethal paramyxoviruses like Nipah virus (NiV) and Hendra virus (HeV). The ability of SOSV to cause severe human disease supports the need for studies on SOSV pathogenesis to better understand the potential impact of this virus and to identify effective treatments...
March 9, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29521099/disruption-of-the-blood-brain-barrier-is-vital-property-of-neurotropic-viral-infection-of-the-central-nervous-system
#9
M M Jamil Al-Obaidi, A Bahadoran, S M Wang, R Manikam, Ch S Raju, S D Sekaran
The blood brain barrier consisting of astrocytes, pericytes and brain microvascular endothelial cells plays a vital role in the pathogenesis of neurotropic viruses by controlling the access of circulating molecules, immune cells or viruses into the central nervous system (CNS). However, this barrier is not impenetrable and neuroviruses have evolved to disrupt and evade it. This review aims to describe the underlying entry mechanisms of several neuroviruses such as (Japanese encephalitis virus (JEV), West Nile virus (WNV), Zika virus (ZIKV), Nipah virus (NiV), Rabies virus (RABV), Herpes simplex virus (HSV) and Human immunodeficiency virus (HIV)) into the CNS through BBB disruption...
2018: Acta Virologica
https://www.readbyqxmd.com/read/29486875/domesticated-animals-as-hosts-of-henipaviruses-and-filoviruses-a-systematic-review
#10
Emma E Glennon, Olivier Restif, Silke Riesle Sbarbaro, Romain Garnier, Andrew A Cunningham, Richard D Suu-Ire, Richard Osei-Amponsah, James L N Wood, Alison J Peel
Bat-borne viruses carry undeniable risks to the health of human beings and animals, and there is growing recognition of the need for a 'One Health' approach to understand their frequently complex spill-over routes. While domesticated animals can play central roles in major spill-over events of zoonotic bat-borne viruses, for example during the pig-amplified Malaysian Nipah virus outbreak of 1998-1999, the extent of their potential to act as bridging or amplifying species for these viruses has not been characterised systematically...
March 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29425244/initiation-extension-and-termination-of-rna-synthesis-by-a-paramyxovirus-polymerase
#11
Paul C Jordan, Cheng Liu, Pauline Raynaud, Michael K Lo, Christina F Spiropoulou, Julian A Symons, Leo Beigelman, Jerome Deval
Paramyxoviruses represent a family of RNA viruses causing significant human diseases. These include measles virus, the most infectious virus ever reported, in addition to parainfluenza virus, and other emerging viruses. Paramyxoviruses likely share common replication machinery but their mechanisms of RNA biosynthesis activities and details of their complex polymerase structures are unknown. Mechanistic and functional details of a paramyxovirus polymerase would have sweeping implications for understanding RNA virus replication and for the development of new antiviral medicines...
February 9, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29391683/cryptic-etiopathological-conditions-of-equine-nervous-system-with-special-emphasis-on-viral-diseases
#12
REVIEW
Rakesh Kumar, Rajendra D Patil
The importance of horse (Equus caballus) to equine practitioners and researchers cannot be ignored. An unevenly distributed population of equids harbors numerous diseases, which can affect horses of any age and breed. Among these, the affections of nervous system are potent reason for death and euthanasia in equids. Many episodes associated with the emergence of equine encephalitic conditions have also pose a threat to human population as well, which signifies their pathogenic zoonotic potential. Intensification of most of the arboviruses is associated with sophisticated interaction between vectors and hosts, which supports their transmission...
December 2017: Veterinary World
https://www.readbyqxmd.com/read/29351657/characterization-of-the-spatial-and-temporal-distribution-of-nipah-virus-spillover-events-in-bangladesh-2007-2013
#13
Maria C Cortes, Simon Cauchemez, Noemie Lefrancq, Stephen P Luby, M Jahangir Hossain, Hossain M S Sazzad, Mahmudur Rahman, Peter Daszak, Henrik Salje, Emily S Gurley
Nipah virus is a zoonotic virus harbored by bats and lethal to humans. Bat-to-human spillovers occur every winter in Bangladesh. However, there is significant heterogeneity in the number of spillovers detected by district and year that remains unexplained. We analyzed data from all 57 spillovers during 2007-2013 and found that temperature differences explained 36% of the year-to-year variation in the total number of spillovers each winter and that distance to surveillance hospitals explained 45% of spatial heterogeneity...
April 11, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29331670/circulation-of-alphacoronavirus-betacoronavirus-and-paramyxovirus-in-hipposideros-bat-species-in-zimbabwe
#14
Mathieu Bourgarel, Davies M Pfukenyi, Vanina Boué, Loïc Talignani, Ngoni Chiweshe, Fodé Diop, Alexandre Caron, Gift Matope, Dorothée Missé, Florian Liégeois
Bats carry a great diversity of zoonotic viruses with a high-impact on human health and livestock. Since the emergence of new coronaviruses and paramyxoviruses in humans (e.g. Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) and Nipah virus), numerous studies clearly established that bats can maintain some of these viruses. Improving our understanding on the role of bats in the epidemiology of the pathogens they harbour is necessary to prevent cross-species spill over along the wild/domestic/human gradient...
March 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29321315/paramyxovirus-v-proteins-interact-with-the-rig-i-trim25-regulatory-complex-and-inhibit-rig-i-signaling
#15
Maria T Sánchez-Aparicio, Leighland J Feinman, Adolfo García-Sastre, Megan L Shaw
Paramyxovirus V proteins are known antagonists of the RIG-I-like receptor (RLR)-mediated interferon induction pathway, interacting with and inhibiting the RLR MDA5. We report interactions between the Nipah virus V protein and both RIG-I regulatory protein TRIM25 and RIG-I. We also observed interactions between these host proteins and the V proteins of measles virus, Sendai virus, and parainfluenza virus. These interactions are mediated by the conserved C-terminal domain of the V protein, which binds to the tandem caspase activation and recruitment domains (CARDs) of RIG-I (the region of TRIM25 ubiquitination) and to the SPRY domain of TRIM25, which mediates TRIM25 interaction with the RIG-I CARDs...
March 15, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29260663/nipah-virus-contamination-of-hospital-surfaces-during-outbreaks-bangladesh-2013-2014
#16
Md Zakiul Hassan, Hossain M S Sazzad, Stephen P Luby, Katharine Sturm-Ramirez, Mejbah Uddin Bhuiyan, Mohammed Ziaur Rahman, Md Muzahidul Islam, Ute Ströher, Sharmin Sultana, Mohammad Abdullah Heel Kafi, Peter Daszak, Mahmudur Rahman, Emily S Gurley
Nipah virus (NiV) has been transmitted from patient to caregivers in Bangladesh presumably through oral secretions. We aimed to detect whether NiV-infected patients contaminate hospital surfaces with the virus. During December 2013-April 2014, we collected 1 swab sample from 5 surfaces near NiV-infected patients and tested surface and oral swab samples by real-time reverse transcription PCR for NiV RNA. We identified 16 Nipah patients; 12 cases were laboratory-confirmed and 4 probable. Of the 12 laboratory-confirmed cases, 10 showed NiV RNA in oral swab specimens...
January 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29092793/proteomic-composition-of-nipah-virus-like-particles
#17
Natalia Mara Vera-Velasco, Maria Jesús García-Murria, Manuel M Sánchez Del Pino, Ismael Mingarro, Luis Martinez-Gil
Virions are often described as virus-only entities with no cellular components with the exception of the lipids in their membranes. However, advances in proteomics are revealing substantial amounts of host proteins in the viral particles. In the case of Nipah virus (NiV), the viral components in the virion have been known for some time. Nonetheless, no information has been obtained regarding the cellular proteins in the viral particles. To address this question, we produced Virus-Like Particles (VLPs) for NiV by expressing the F, G and M proteins in human-derived cells...
February 10, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29035743/transmission-of-henipaviruses
#18
REVIEW
Sarah Weatherman, Heinz Feldmann, Emmie de Wit
The genus Henipavirus has expanded rapidly in geographic range, number of species, and host range. Hendra and Nipah virus are two henipaviruses known to cause severe disease in humans with a high case-fatality rate. Pteropid spp. bats are the natural reservoir of Hendra and Nipah virus. From these bats, virus can be transmitted to an amplifying host, horses and pigs, and from these hosts to humans, or the virus can be transmitted directly to humans. Although the main route of shedding varies between host species, close contact is required for transmission in all hosts...
October 13, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28984239/variability-of-interferon-%C3%AE-induction-and-antiviral-activity-in-nipah-virus-infected-differentiated-human-bronchial-epithelial-cells-of-two-human-donors
#19
Lucie Sauerhering, Helena Müller, Laura Behner, Mareike Elvert, Sarah Katharina Fehling, Thomas Strecker, Andrea Maisner
Highly pathogenic Nipah virus (NiV) generally causes severe encephalitis in humans. Respiratory symptoms are infrequently observed, likely reflecting variations in infection kinetics in human airways. Supporting this idea, we recently identified individual differences in NiV replication kinetics in cultured airway epithelia from different human donors. As type III interferons (IFN-λ) represent major players in the defence mechanism against viral infection of the respiratory mucosa, we studied IFN-λ induction and antiviral activity in NiV-infected primary differentiated human bronchial epithelial cells (HBEpCs) cultured under air-liquid interface conditions...
October 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28974687/monomeric-ephrinb2-binding-induces-allosteric-changes-in-nipah-virus-g-that-precede-its-full-activation
#20
Joyce J W Wong, Tracy A Young, Jiayan Zhang, Shiheng Liu, George P Leser, Elizabeth A Komives, Robert A Lamb, Z Hong Zhou, Joshua Salafsky, Theodore S Jardetzky
Nipah virus is an emergent paramyxovirus that causes deadly encephalitis and respiratory infections in humans. Two glycoproteins coordinate the infection of host cells, an attachment protein (G), which binds to cell surface receptors, and a fusion (F) protein, which carries out the process of virus-cell membrane fusion. The G protein binds to ephrin B2/3 receptors, inducing G conformational changes that trigger F protein refolding. Using an optical approach based on second harmonic generation, we show that monomeric and dimeric receptors activate distinct conformational changes in G...
October 3, 2017: Nature Communications
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