Articles tagged with Viruses
Researchers at Children's Hospital of Philadelphia discovered a novel mechanism by which viruses shut down alarm signals that trigger immune responses. By trapping an important signaling molecule inside the cell nucleus, viral protein VII prevents it from sounding an alarm to the immune system.
Researchers found that mosquito bites can facilitate viral replication and spread by triggering an inflammatory response in the skin. The study suggests new approaches for combating viruses, including using topical creams to suppress bite inflammation.
Researchers found that mosquito bites enhance the replication of viral infections like Zika and dengue by triggering an inflammatory response in the body. Anti-inflammatory medications may be effective in stopping this process and preventing severe illness.
A new study maps the geographical ranges of Aedes aegypti and Aedes albopictus mosquitoes, which transmit dengue, chikungunya, and Zika viruses, across 183 counties in 26 states and 1,241 counties in 40 states.
A team of scientists analyzed multiple studies on three well-known viral families to understand how viruses evolve and increase their genetic diversity. They found that segmented RNA viruses can replicate with a single parental line, but reassortment between viruses is limited by physical and molecular constraints.
Researchers at Umea University have discovered that mosquito larvae in the Västerbotten region carry viruses that can cause infectious disease, including Sindbis virus and Inkoo virus. These findings indicate that the viruses can be transferred from female mosquitoes to their eggs.
The Observatory on Social Media (OSoMe) provides a free online software suite to analyze online trends and memes. The tool offers four modules: Trends, Networks, Movies, and Maps, allowing users to explore how information spreads in social networks.
The study details the transmission of Zika virus through mosquitoes and human-to-human contact, as well as its association with neurological disorders and birth defects. Researchers emphasize the need for antiviral agents and vaccines to combat the outbreak.
New research confirms Zika virus was present in Haiti and possibly earlier, contradicting early theories on its spread in the Americas. The discovery sheds light on the virus's history and suggests a more complex spread than initially thought.
A surface mutation in canine parvovirus (CPV) allows it to infect hosts of different species, including wild forest-dwelling animals like raccoons. This critical step increases the virus's ability to spread.
Human placental trophoblasts resistant to Zika virus proliferation and release an antiviral molecule called type III interferon to stop viral replication. Mouse models show high virus levels in brain, spinal cord, and testes after inoculation through skin.
Researchers found that social media campaigns can attract attention worldwide but do not necessarily lead to significant fundraising or action. The study suggests that the visibility of social media messages is often not matched by a corresponding increase in donations.
Researchers have successfully observed raft domains in live cells using new fluorescent probes, revealing dynamic interactions between gangliosides and cholesterol. The findings open up new avenues for investigating how toxins, bacteria, and viruses invade cells through these membrane structures.
Researchers identify two distinct HSV-1 virus strains in an individual, revealing their European/North American and Asian origins. The discovery opens doors to tracing a person's life history using genetic fingerprinting of viral genomes.
Researchers used cryo-electron microscopy to analyze the Zika virus strain isolated from an infected patient in French Polynesia. The analysis revealed that Zika's structure is similar to other flaviviruses, but with a slight difference in a region important for binding to antibodies and host receptors.
A high-throughput RNA interference screen identified fibrillarin as a crucial host protein required for live henipavirus infection in human cells. This discovery suggests that methyltransferase enzymes, including fibrillarin, represent a potential target for the development of anti-henipavirus drugs.
A study in Proceedings of the National Academy of Sciences identified biological factors predicting viral transmission efficiency among humans. Low host mortality and extended survival time increase a virus's ability to spread, while envelope structures and insect vectors hinder emergence.
Researchers at PolyU have developed a novel nano biosensor for rapid detection of flu virus using upconversion luminescence resonance energy transfer (LRET) process. The technology reduces testing duration from 1-3 days to 2-3 hours and costs around HK$20 per sample, making it a low-cost and efficient diagnostic tool.
Researchers at UT Southwestern Medical Center have identified a new innate immunity pathway that protects mammals from viral oncogenesis, a process causing cancer. The study found that the autophagy-related protein beclin 2 can help break down key oncogenic viral proteins associated with Kaposi's sarcoma.
Researchers discovered that common drugs for psychosis and depression can prevent certain viruses from infecting cells by blocking potassium ion channels. This breakthrough finding has potential to stop deadly viruses from spreading and causing human disease.
Researchers are studying the socio-ecology and climate responses of dengue and Zika virus transmission in coastal Ecuador to understand risk landscape and develop effective interventions. They are developing mathematical models to predict future changes in virus transmission under climate change.
Researchers have developed a method to make mosquitoes resistant to arboviruses like Dengue and Zika by introducing two strains of Wolbachia parasite. The superinfected mosquitoes showed improved virus inhibition and reduced transmission, making it a potential tool to combat mosquito-borne diseases.
A recent study reveals that ocean plankton networks play a crucial role in removing carbon from the atmosphere and depositing it deep in the ocean. The research, led by Matthew Sullivan of Ohio State University, used advanced genetic sequencing to identify clusters of organisms most linked to carbon deposition.
A new study confirms that school reopenings are a primary driver of asthma exacerbations in children, with cold viruses being largely to blame. The research found a significant correlation between the timing of school starts and hospitalizations, highlighting the importance of preventive measures during peak viral transmission periods.
Researchers have identified over 13,000 Zika cases in Colombia, with the country now second only to Brazil in reported infections. The team is exploring ways to control the spread of the virus using a bacterium that infects mosquitoes, aiming to prevent transmission and mitigate serious consequences like microcephaly.
Researchers discovered that a human protein called ANP32A helps the virus replicate in human cells. Understanding this mechanism may lead to the development of new antiviral treatments for seasonal flu and pandemics.
The California Academy of Sciences has added 102 new plant and animal species to Earth's family tree, enriching our understanding of the planet's complex web of life. These discoveries include tiny, blood-sucking Dracula ants, vibrant sea slugs, and eight new viruses from around five continents and three oceans.
A new study in PLOS One analyzes tens of millions of tweets surrounding specific social protests and finds that a critical periphery of 'slacktivists' greatly amplify a movement's message, doubling its reach. The researchers argue that these peripheral players are essential to give protests resonance.
A group of researchers from the University of Helsinki discovered viral DNA in bone samples from World War II casualties, providing a unique archive of past infections. This finding opens up new possibilities for studying ancient pandemics and improving disease prevention.
A new study found that nonhuman primates in Bangladesh and Cambodia harbor diverse astroviruses, including human astroviruses, challenging the paradigm that AstV infection is species-specific. The researchers also detected recombinant viruses that may be more efficiently transmitted.
Researchers have discovered a new virus, Parramatta River virus, carried by saltmarsh Aedes vigilax mosquitoes, which do not pose direct health risks to humans. The discovery may lead to stopping outbreaks of mosquito-borne diseases by preventing the spread of 'bad' viruses.
The University of Pittsburgh Center for Vaccine Research has received a $7.6 million grant from the U.S. Department of Defense to accelerate development of drugs and vaccines against alphaviruses, deadly viruses transmitted by mosquitoes. The team aims to develop therapies and protection against these diseases.
New study reveals that histone deacetylase 6 inhibition improves the ability of oncolytic herpes simplex virus type 1 to kill glioma cells. HDAC inhibitors increase viral trafficking to the nucleus, leading to increased replication and tumor cell death.
Researchers have developed a high-speed electron tomography technique that sets new standards for 3D imaging of the nanoworld. The method enables visualization of dynamic processes and structures with sub-nanometre precision, opening up new horizons in life sciences and soft matter research.
Researchers discovered that flu viruses gain ability to spread through air by adapting to bind to specific human receptors, with the soft palate playing a key role in this process. The findings provide insight into how flu viruses evolve airborne transmissibility and can help identify viruses with potential to cause global outbreaks.
Researchers mapped antigenic differences in dengue virus strains, finding overlap among previously thought distinct groups. The findings suggest a continuum rather than separate groups, making vaccine development harder.
Researchers found significant antigenic difference within each dengue serotype, suggesting individuals infected with one type may not be protected against different strains. The study's findings have implications for vaccine design and understanding of the virus's evolution.
A new study found that viruses flourish in the guts of healthy infants, with diverse viral strains and a dynamic ecosystem of interacting organisms. The researchers discovered viral strains that exclusively kill bacteria, which declines as the babies grow older.
Researchers at the University of Wisconsin-Madison have developed a new method for making flu vaccines using cell culture, which could lead to faster and more efficient vaccine production. This technology could potentially replace traditional egg-based vaccine production methods, which are limited by avian influenza outbreaks.
Florida State University researchers have identified a viral protein that inhibits the major DNA sensor, suggesting a new pathway for fighting infections, cancer, and autoimmune diseases. By manipulating this protein, scientists may be able to enhance or tune down the immune response.
Researchers studied bats and rodents to identify characteristics of cross-species virus transmission. They found that viruses pass more easily between bat species than rodent species, with unique bat traits like gregariousness facilitating transmission.
Researchers develop VirSorter to identify previously unknown microbial hosts and analyze viral-host interactions, revealing a wide range of prophage-like viruses that coexist with their host microbes.
Harvard researchers have reconstructed an ancient virus effective at delivering gene therapies to liver, muscle, and retina. The discovery may lead to novel vectors for safer and more potent gene therapies.
A new diagnostic test has been developed to quickly detect enterovirus D68, a respiratory virus that caused unusually severe illness in children last year. The test is more effective than previous methods and can be completed in just a few hours, reducing the time needed to detect the virus.
Researchers discovered a human antibody specific to dengue virus serotype 2 that protects mice from the virus, regardless of administration timing. The antibody may act as both a preventative and therapeutic agent by locking viral envelope proteins on the surface, preventing them from entering host cells.
Singapore researchers have identified specific molecular interactions in the dengue virus genome that allow it to manipulate human immune defenses and spread more efficiently. These genetic changes increase the virus's capacity for epidemic outbreaks, highlighting the need for targeted surveillance and response strategies.
Researchers at UMN identified two key mutations in MERS virus enabling its transmission from bats to humans. These mutations allowed the virus to infect human cells, highlighting a crucial evolutionary strategy used by the virus.
Researchers developed a new technology called VirScan to identify all viruses an individual has been exposed to over their life. The study found that people are exposed to around 10 viral species on average, but some individuals encountered up to 84 different viral species.
Researchers have developed VirScan, a method that can analyze a single drop of blood to identify past and present viral infections. The technology shows promise in uncovering unexpected factors affecting individual patients' health and expanding opportunities for large-scale analysis.
Researchers at ETH Zurich developed a new multiplexing technique that accelerates nanoMRI imaging, enabling faster and more efficient scanning of nanoscale objects. The technique cuts normal scan time from two weeks to just two days.
Marine viruses and microbes interact on a global scale, driving ecological processes and producing half of the oxygen we breathe. A study by an international team led by University of Arizona scientists reveals how viral communities maintain high regional diversity through passive transport by ocean currents.
Researchers have discovered a way to make pancreatic cancer cells more susceptible to oncolytic viruses by exploiting the communication between cancer cells and supportive cells, such as cancer-associated fibroblasts. This weakness can be exploited to improve treatment outcomes for patients with pancreatic cancer.
Researchers at UAB have created an artificial virus that can self-assemble, surround DNA fragments, and reach the nucleus of cells without biological risk. This innovation provides a promising alternative to traditional viruses in gene therapy, enabling the efficient delivery of therapeutic DNA and drugs directly to target cells.
Recent study reveals that microbes like Sulfolobus islandicus can freeze in place when infected with a harmless virus, such as Sulfolobus spindle-shaped virus 9 (SSV9), to protect themselves. The dormant microbes recover if the virus is removed within 24-48 hours, otherwise they die.
The USGS has detected a novel, mixed-origin HPAI H5N1 avian flu virus in a green-winged teal in Washington State, differing from the well-known Asian H5N1 HPAI virus. The population-level impact of this virus on free-living wild bird species is currently unknown.
Researchers discovered a molecular cause for parvovirus selectivity in cancer cells, revealing the PKCη/Rdx-driven phosphorylation of PDK1. This biomarker predicts therapy effectiveness and identifies cancer cells independent of growth factors.
Researchers have discovered a network of viruses that pose a threat to multiple species of bumblebees and managed honeybees, highlighting the urgent need for disease management strategies. The study found five viruses, including deformed wing virus, in wild bees across Great Britain.
A new approach to tackling alphavirus infections has been developed using the protein pentraxin 3, which plays a crucial role in promoting virus infection and disease. This breakthrough discovery paves the way for improved vaccine and drug development.
Researchers are creating a synthetic vaccine that mimics the structure of the live virus to provide a quicker, easier, and safer alternative. The goal is to eradicate polio without the danger of accidental release associated with traditional vaccines.
Researchers at Tel Aviv University identified a novel protein capable of targeting and inhibiting the activity of a protein essential to bacterial cells. This discovery may strengthen efforts to combat antibiotic-resistant infections and presents a potential breakthrough in the fight against superbugs.