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https://www.readbyqxmd.com/read/28433050/zoonotic-potential-of-emerging-paramyxoviruses-knowns-and-unknowns
#1
Patricia A Thibault, Ruth E Watkinson, Andres Moreira-Soto, Jan F Drexler, Benhur Lee
The risk of spillover of enzootic paramyxoviruses and the susceptibility of recipient human and domestic animal populations are defined by a broad collection of ecological and molecular factors that interact in ways that are not yet fully understood. Nipah and Hendra viruses were the first highly lethal zoonotic paramyxoviruses discovered in modern times, but other paramyxoviruses from multiple genera are present in bats and other reservoirs that have unknown potential to spillover into humans. We outline our current understanding of paramyxovirus reservoir hosts and the ecological factors that may drive spillover, and we explore the molecular barriers to spillover that emergent paramyxoviruses may encounter...
2017: Advances in Virus Research
https://www.readbyqxmd.com/read/28407738/-why-won-t-they-just-vaccinate-horse-owner-risk-perception-and-uptake-of-the-hendra-virus-vaccine
#2
J Manyweathers, H Field, N Longnecker, K Agho, C Smith, M Taylor
BACKGROUND: Hendra virus is a paramyxovirus that causes periodic serious disease and fatalities in horses and humans in Australia first identified in 1994. Pteropid bats (commonly known as flying-foxes) are the natural host of the virus, and the putative route of infection in horses is by ingestion or inhalation of material contaminated by flying-fox urine or other bodily fluids. Humans become infected after close contact with infected horses. Horse owners in Australia are encouraged to vaccinate their horses against Hendra virus to reduce the risk of Hendra virus infection, and to prevent potential transmission to humans...
April 13, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28381569/group-a-rotaviruses-in-chinese-bats-genetic-composition-serology-and-evidence-for-bat-to-human-transmission-and-reassortment
#3
Biao He, Xiaohong Huang, Fuqiang Zhang, Weilong Tan, Jelle Matthijnssens, Shaomin Qin, Lin Xu, Zihan Zhao, Ling'en Yang, Quanxi Wang, Tingsong Hu, Xiaolei Bao, Jianmin Wu, Changchun Tu
Bats are natural reservoirs for many pathogenic viruses and increasing evidence supports that bats can also harbor group A rotaviruses (RVA), important causative agents of diarrhea in children and young animals. Currently, 8 RVA strains have been identified from African and Chinese bats, possessing completely novel genotype constellations or genotypes possibly originating from other mammals. However, all these data were mainly based on detection of RVA RNA, only present during acute infections, which does not permit assessment of the true exposure of a bat population to RVA...
April 5, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28214468/difficulties-experienced-by-veterinarians-when-communicating-about-emerging-zoonotic-risks-with-animal-owners-the-case-of-hendra-virus
#4
Diana H Mendez, Petra Büttner, Jenny Kelly, Madeleine Nowak, Rick Speare Posthumously
BACKGROUND: Communication skills are essential for veterinarians who need to discuss animal health related matters with their clients. When dealing with an emerging zoonosis, such as Hendra virus (HeV), veterinarians also have a legal responsibility to inform their clients about the associated risks to human health. Here we report on part of a mixed methods study that examined the preparedness of, and difficulties experienced by, veterinarians communicating about HeV-related risks with their clients...
February 18, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28213515/hendra-virus-fusion-protein-transmembrane-domain-contributes-to-pre-fusion-protein-stability
#5
Stacy Webb, Tamas Nagy, Hunter Moseley, Michael Fried, Rebecca Dutch
Enveloped viruses utilize fusion (F) proteins studding the surface of the virus to facilitate membrane fusion with a target cell membrane. Fusion of the viral envelope with a cellular membrane is required for release of viral genomic material, so the virus can ultimately reproduce and spread. To drive fusion, the F protein undergoes an irreversible conformational change, transitioning from a metastable pre-fusion conformation to a more thermodynamically stable post-fusion structure. Understanding the elements that control stability of the pre-fusion state and triggering to the post-fusion conformation is important for understanding F protein function...
April 7, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28176536/kinase-targets-in-cns-drug-discovery
#6
Hendra Gunosewoyo, Lifang Yu, Lenka Munoz, Michael Kassiou
Originally thought to be nondruggable, kinases represent attractive drug targets for pharmaceutical companies and academia. To date, there are over 40 kinase inhibitors approved by the US FDA, with 32 of these being small molecules, in addition to the three mammalian target of rapamycin inhibitor macrolides (sirolimus, temsirolimus and everolimus). Despite the rapid development of kinase inhibitors for cancer, presently none of these agents are approved for CNS indications. This mini perspective highlights selected kinase targets for CNS disorders, of which brain-permeable small-molecule inhibitors are reported, with demonstrated preclinical proof-of-concept efficacy...
February 8, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28124421/in-this-issue-january-february-2017-experimental-hendra-virus-infection-of-dogs%C3%A2-%C3%A2-%C3%A2-brucella-suis-in-dogs%C3%A2-%C3%A2-%C3%A2-cytokines-in-stored-packed-red-blood-cells%C3%A2-%C3%A2-%C3%A2-transitional-lumbosacral-vertebrae-in-labradors%C3%A2-%C3%A2-%C3%A2-chemotherapy-for-histiocytic-sarcomas%C3%A2-%C3%A2-%C3%A2-pyothorax
#7
EDITORIAL
https://www.readbyqxmd.com/read/28124415/experimental-hendra-virus-infection-of-dogs-virus-replication-shedding-and-potential-for-transmission
#8
D J Middleton, S Riddell, R Klein, R Arkinstall, J Haining, L Frazer, C Mottley, R Evans, D Johnson, J Pallister
OBJECTIVE: Characterisation of experimental Hendra virus (HeV) infection in dogs and assessment of associated transmission risk. METHODS: Beagle dogs were exposed oronasally to Hendra virus/Australia/Horse/2008/Redlands or to blood collected from HeV-infected ferrets. Ferrets were exposed to oral fluids collected from dogs after canine exposure to HeV. Observations made and samples tested post-exposure were used to assess the clinical course and replication sites of HeV in dogs, the infectivity for ferrets of canine oral fluids and features of HeV infection in dogs following contact with infective blood...
January 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28111388/antibacterial-efficacy-of-triple-layered-poly-lactic-co-glycolic-acid-nanoapatite-lauric-acid-guided-bone-regeneration-membrane-on-periodontal-bacteria
#9
Nur Najiha Saarani, Kalitheerta Jamuna-Thevi, Neelam Shahab, Hendra Hermawan, Syafiqah Saidin
A guided bone regeneration (GBR) membrane has been extensively used in the repair and regeneration of damaged periodontal tissues. One of the main challenges of GBR restoration is bacterial colonization on the membrane, constitutes to premature membrane degradation. Therefore, the purpose of this study was to investigate the antibacterial efficacy of triple-layered GBR membrane composed of poly(lactic-co-glycolic acid) (PLGA), nanoapatite (NAp) and lauric acid (LA) with two types of Gram-negative periodontal bacteria, Fusobacterium nucleatum and Porphyromonas gingivalis through a disc diffusion and bacterial count tests...
January 20, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28091706/microclimates-might-limit-indirect-spillover-of-the-bat-borne-zoonotic-hendra-virus
#10
Gerardo Martin, Rebecca J Webb, Carla Chen, Raina K Plowright, Lee F Skerratt
Infectious diseases are transmitted when susceptible hosts are exposed to pathogen particles that can replicate within them. Among factors that limit transmission, the environment is particularly important for indirectly transmitted parasites. To try and assess a pathogens' ability to be transmitted through the environment and mitigate risk, we need to quantify its decay where transmission occurs in space such as the microclimate harbouring the pathogen. Hendra virus, a Henipavirus from Australian Pteropid bats, spills-over to horses and humans, causing high mortality...
January 14, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28060559/understanding-the-interaction-between-henipaviruses-and-their-natural-host-fruit-bats-paving-the-way-toward-control-of-highly-lethal-infection-in-humans
#11
François Enchéry, Branka Horvat
Hendra virus and Nipah virus (NiV) are highly pathogenic zoonotic paramyxoviruses, from henipavirus genus, that have emerged in late 1990s in Australia and South-East Asia, respectively. Since their initial identification, numerous outbreaks have been reported, affecting both domestic animals and humans, and multiple rounds of person-to-person NiV transmission were observed. Widely distributed fruit bats from Pteropodidae family were found to be henipavirus natural reservoir. Numerous studies have reported henipavirus seropositivity in pteropid bats, including bats in Africa, thus expanding notably the geographic distribution of these viruses...
January 6, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/28056216/nuclear-localization-and-secretion-competence-is-conserved-amongst-henipavirus-matrix-proteins
#12
Elisabeth C McLinton, Kylie M Wagstaff, Alexander Lee, Gregory W Moseley, Glenn A Marsh, Lin-Fa Wang, David A Jans, Kim G Lieu, Hans Netter
Viruses of the genus Henipavirus of the family Paramyxoviridae are zoonotic pathogens, which have emerged in South East Asia, Australia and Africa. Nipah virus (NiV) and Hendra virus (HeV) are highly virulent pathogens transmitted from bats to animals and humans, whilst the henipavirus Cedar virus (CedV) seems to be non-pathogenic in infection studies. The full replication cycle of the Paramyxoviridae occurs in the host cell's cytoplasm where viral assembly is orchestrated by the matrix (M) protein. Unexpectedly, the NiV-M protein traffics through the nucleus as an essential step to engage the plasma membrane in preparation for viral budding/release...
January 5, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28054443/risk-mitigation-of-emerging-zoonoses-hendra-virus-and-non-vaccinating-horse-owners
#13
J Manyweathers, H Field, D Jordan, N Longnecker, K Agho, C Smith, M Taylor
Hendra virus was identified in horses and humans in 1994, in Queensland, Australia. Flying foxes are the natural host. Horses are thought to acquire infection by direct or indirect contact with infected flying fox urine. Humans are infected from close contact with infected horses. To reduce risk of infection in horses and humans, Australian horse owners are encouraged to vaccinate horses against the virus and adopt property risk mitigation practices that focus on reducing flying fox horse contact and contamination of horses' environment with flying fox bodily fluids...
January 4, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28004308/cutaneous-side-effects-and-transepidermal-water-loss-to-gefitinib-a-study-of-11-patients
#14
Franky Chandra, Dendi Sandiono, Unwati Sugiri, Oki Suwarsa, Hendra Gunawan
INTRODUCTION: Cutaneous side effects caused by epidermal growth factor receptor (EGFR) inhibitors occurred in 45-100% of patients which may lead to therapy modification or interruption. This study aimed to evaluate cutaneous side effects and transepidermal water loss (TEWL) values in non-small cell lung carcinoma (NSCLC) patients who received gefitinib EGFR inhibitor. METHODS: A descriptive observational study with cross-sectional design and a consecutive sampling method was conducted from 1 February to 4 March 2016...
March 2017: Dermatology and Therapy
https://www.readbyqxmd.com/read/27921111/rapid-detection-of-hendra-virus-antibodies-an-integrated-device-with-nanoparticle-assay-and-chaotic-micromixing
#15
K Petkovic, G Metcalfe, H Chen, Y Gao, M Best, D Lester, Y Zhu
Current diagnosis of infectious diseases such as Hendra virus (HeV) relies mostly on laboratory-based tests. There is an urgent demand for rapid diagnosis technology to detect and identify these diseases in humans and animals so that disease spread can be controlled. In this study, an integrated lab-on-a-chip device using a magnetic nanoparticle immunoassay is developed. The key features of the device are the chaotic fluid mixing, achieved by magnetically driven motion of nanoparticles with the optimal mixing protocol developed using chaotic transport theory, and the automatic liquid handling system for loading reagents and samples...
December 20, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27859703/reinventing-hsp90-inhibitors-blocking-c-terminal-binding-events-to-hsp90-by-using-dimerized-inhibitors
#16
Yen Chin Koay, Hendra Wahyudi, Shelli R McAlpine
Heat shock protein 90 (Hsp90) is a molecular chaperone (90 kDa) that functions as a dimer. This protein facilitates the folding, assembly, and stabilization of more than 400 proteins that are responsible for cancer development and progression. Inhibiting Hsp90's function will shut down multiple cancer-driven pathways simultaneously because oncogenic clients rely heavily on Hsp90, which makes this chaperone a promising anticancer target. Classical inhibitors that block the binding of adenine triphosphate (ATP) to the N-terminus of Hsp90 are highly toxic to cells and trigger a resistance mechanism within cells...
December 19, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27793709/drug-eluting-coating-of-ginsenoside-rg1-and-re-incorporated-poly-lactic-co-glycolic-acid-on-stainless-steel-316l-physicochemical-and-drug-release-analyses
#17
Zulaika Miswan, Siti Khadijah Lukman, Fadzilah Adibah Abd Majid, Mun Fai Loke, Syafiqah Saidin, Hendra Hermawan
Active ingredients of ginsenoside, Rg1 and Re, are able to inhibit the proliferation of vascular smooth muscle cells and promote the growth of vascular endothelial cells. These capabilities are of interest for developing a novel drug-eluting stent to potentially solve the current problem of late-stent thrombosis and poor endotheliazation. Therefore, this study was aimed to incorporate ginsenoside into degradable coating of poly(lactic-co-glycolic acid) (PLGA). Drug mixture composed of ginseng extract and 10% to 50% of PLGA (xPLGA/g) was coated on electropolished stainless steel 316L substrate by using a dip coating technique...
December 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27790096/intranasal-location-and-immunohistochemical-characterization-of-the-equine-olfactory-epithelium
#18
Alexandra Kupke, Sabine Wenisch, Klaus Failing, Christiane Herden
The olfactory epithelium (OE) is the only body site where neurons contact directly the environment and are therefore exposed to a broad variation of substances and insults. It can serve as portal of entry for neurotropic viruses which spread via the olfactory pathway to the central nervous system. For horses, it has been proposed and concluded mainly from rodent studies that different viruses, e.g., Borna disease virus, equine herpesvirus 1 (EHV-1), hendra virus, influenza virus, rabies virus, vesicular stomatitis virus can use this route...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27783670/dual-microrna-screens-reveal-that-the-immune-responsive-mir-181-promotes-henipavirus-entry-and-cell-cell-fusion
#19
Chwan Hong Foo, Christina L Rootes, Karla Cowley, Glenn A Marsh, Cathryn M Gould, Celine Deffrasnes, Christopher J Cowled, Reuben Klein, Sarah J Riddell, Deborah Middleton, Kaylene J Simpson, Lin-Fa Wang, Andrew G D Bean, Cameron R Stewart
Hendra and Nipah viruses (family Paramyxoviridae, genus Henipavirus) are bat-borne viruses that cause fatal disease in humans and a range of other mammalian species. Gaining a deeper understanding of host pathways exploited by henipaviruses for infection may identify targets for new anti-viral therapies. Here we have performed genome-wide high-throughput agonist and antagonist screens at biosafety level 4 to identify host-encoded microRNAs (miRNAs) impacting henipavirus infection in human cells. Members of the miR-181 and miR-17~93 families strongly promoted Hendra virus infection...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27780905/using-administrative-data-to-explore-the-effect-of-survey-nonresponse-in-the-uk-employment-retention-and-advancement-demonstration
#20
Richard Dorsett, Richard Hendra, Philip K Robins
BACKGROUND: Even a well-designed randomized control trial (RCT) study can produce ambiguous results. This article highlights a case in which full-sample results from a large-scale RCT in the United Kingdom differ from results for a subsample of survey respondents. OBJECTIVES: Our objective is to ascertain the source of the discrepancy in inferences across data sources and, in doing so, to highlight important threats to the reliability of the causal conclusions derived from even the strongest research designs...
October 25, 2016: Evaluation Review
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