Researchers explain how viral protein promotes deadly infection by Nipah and Hendra viruses

(Georgia State University) Researchers have identified how a viral protein, which plays a major role in causing deadly Nipah and Hendra virus infections, targets a critical function in human cells to suppress immune responses and promote fatal disease.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news

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by Neeltje van Doremalen, Teresa Lambe, Sarah Sebastian, Trenton Bushmaker, Robert Fischer, Friederike Feldmann, Elaine Haddock, Michael Letko, Victoria A. Avanzato, Ilona Rissanen, Rachel LaCasse, Dana Scott, Thomas A. Bowden, Sarah Gilbert, Vincent Munster Nipah virus (NiV) is a highly pathogenic re-emerging virus that causes outbreaks in South East Asia. Currently, no approved and licensed vaccine or antivirals exist. Here, we investigated the efficacy of ChAdOx1 NiVB, a simian adenovirus-based vaccine encoding NiV glycoprotein (G) Bangladesh, in Syrian hamsters. Prime-only as well as prime-boost vaccination resulted i...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
A recent outbreak of Nipah virus (NiV) in India has caused 17 deaths among people living in districts of Kerala state. Its zoonotic nature as well as high rate of human-to-human transmission has led researchers worldwide to work high for understanding the different aspects of the NiV. We performed a codon usage analysis based on publicly available nucleotide sequences of NiV and its host adaptation along with other members of genus Henipavirus in ten hosts. NiV genome encodes nine open reading frames; and overall, no significant bias in codon usage was observed. Aromaticity of proteins had no impact on codon usage. An anal...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Abstract Nipah virus (NiV) is a recently emerged paramyxovirus that causes acute respiratory illness and fatal encephalitis in a broad spectrum of vertebrates, including humans. Due to its high pathogenicity and mortality rates, NiV requires handling in biosafety level-4 (BSL-4) containment facilities and no effective vaccines or therapeutic agents are currently available. Since current diagnostic tests for detecting serum neutralizing antibodies against NiV mainly employ live viruses, establishment of more safe and robust alternative diagnostic methods is an essential medical requirement. Here, we have developed ...
Source: Biochemical and Biophysical Research communications - Category: Biochemistry Authors: Tags: Biochem Biophys Res Commun Source Type: research
ing Bats are known to harbor and transmit many emerging and re-emerging viruses, many of which are extremely pathogenic in humans but do not cause overt pathology in their bat reservoir hosts: henipaviruses (Nipah and Hendra), filoviruses (Ebola and Marburg), and coronaviruses (SARS-CoV and MERS-CoV). Direct transmission cycles are often implicated in these outbreaks, with virus shed in bat feces, urine, and saliva. An additional mode of virus transmission between bats and humans requiring further exploration is the spread of disease via arthropod vectors. Despite the shared ecological niches that bats fill with many h...
Source: Viruses - Category: Virology Authors: Tags: Review Source Type: research
This study investigated the presence of Henipa- and related viruses in the Egyptian Rousette bat in South Africa as well as determining potential excretion in urine over time.
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: 19.007 Source Type: research
Publication date: February 2019Source: Current Opinion in Virology, Volume 34Author(s): Lin-Fa Wang, Danielle E AndersonIn the last two decades, several high impact zoonotic disease outbreaks have been linked to bat-borne viruses. These include SARS coronavirus, Hendra virus and Nipah virus. In addition, it has been suspected that ebolaviruses and MERS coronavirus are also linked to bats. It is being increasingly accepted that bats are potential reservoirs of a large number of known and unknown viruses, many of which could spillover into animal and human populations. However, our knowledge into basic bat biology and immuno...
Source: Current Opinion in Virology - Category: Virology Source Type: research
ijendra Pal Singh Hendra virus (HeV) and Nipah virus (NiV) are among a group of emerging bat-borne paramyxoviruses that have crossed their species-barrier several times by infecting several hosts with a high fatality rate in human beings. Despite the fatal nature of their infection, a comprehensive study to explore their evolution and adaptation in different hosts is lacking. A study of codon usage patterns in henipaviruses may provide some fruitful insight into their evolutionary processes of synonymous codon usage and host-adapted evolution. Here, we performed a systematic evolutionary and codon usage bias analysis o...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
(Monash University) Henipaviruses are among the deadliest known viruses and have no effective treatments. They include Hendra, lethal to humans and horses, and the Nipah virus, a serious threat in parts of Asia. Researchers have now discovered that Henipaviruses hijack a mechanism used by cells to counter DNA damage and prevent harmful mutations (important in diseases like cancer). This finding adds insight into how viruses behave, and could lead to new targets for antivirals to treat them.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
This study was carried out to screen for the presence antibodies to Nipah virus soluble G protein (NiV sG), Nipah virus N protein (NiVN), Nipah virus soluble F protein (NiV sF), Hendra virus soluble G protein (HeV sG), Zaire Ebola virus G protein (EboV G), Cedar virus soluble G protein (CedV sG) and Menangle virus N protein (MenVN) in Eidolon helvum captured in Zaria, Nigeria.
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: UMP. 232 Source Type: research
Nipah virus, a paramyxovirus related to Hendra virus, 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, whereas in Bangladesh and 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. There are currently no effective therapeutics, ...
Source: Journal of Clinical Microbiology - Category: Microbiology Authors: Tags: Minireviews Source Type: research
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