Articles tagged with Viruses
Researchers develop a technique to coat viruses with proteins, allowing for easier tracking and treatment of infectious diseases. This breakthrough could lead to new treatments for cancer, cardiovascular, metabolic, and inherited disorders.
Researchers at ETH Zurich identify a unique invasion strategy used by the vaccinia virus, exploiting cellular waste disposal mechanisms and evading immune response. The discovery sheds light on a new mechanism of action for this virus, which could inform the development of new antiviral agents.
Cornell researchers have identified 63 proteins in male mosquitoes' seminal fluid that can suppress female appetite for mammalian blood and stimulate egg production. The study's findings could lead to novel strategies to prevent dengue virus spread, a disease affecting 50 million people annually.
Phytoplankton in major oceans produce half the world's oxygen through photosynthesis, while cyanobacteria are infected by viruses that provide genetic material for photosynthesis machinery. This symbiotic relationship highlights the essential role of viruses in planetary processes and global cooling.
Researchers at the Canadian Light Source synchrotron have determined the structure of the enzyme responsible for the Norwalk virus's genetic replication. This breakthrough could lead to the development of drugs that can effectively treat outbreaks of this highly contagious and untreatable bug.
A new study reveals that transfer RNA (tRNA) preserves the earliest events of evolutionary history in its structure. The researchers used detailed data to reconstruct the tRNA family tree and determine the order of emergence for viruses, archaea, bacteria, and eukarya.
The BioBlower technology has passed US Department of Defense tests and has been directed to retrofit military platforms with the system. The device destroys airborne pathogens by rapidly heating and compressing contaminated air, providing a more efficient and effective solution than conventional HEPA filters.
Biomedical engineer Robert Langer is working on novel ways to deliver drugs and genes to targeted sites in the human body. His lab has developed polymers that can efficiently deliver DNA with reduced toxicity, potentially leading to new cancer treatments and disease therapies.
Scientists at SLU and UAB have made a breakthrough in understanding how poxviruses replicate and wreak havoc on the immune system. Their findings could lead to the development of new drugs for inflammatory and immunological disorders such as rheumatoid arthritis.
Epstein-Barr virus uses LMP1 to activate TRADD, a critical signaling molecule. Without TRADD, LMP1 loses its ability to induce apoptosis, allowing uncontrolled cell growth and cancer formation.
Two new studies found that treating Hepatitis C with peginterferon and ribavirin for shorter durations can yield similar success rates to longer treatments, with cost savings and reduced risk of serious side effects. Patients' HCV-RNA levels after 4 weeks may be an important factor in determining the best treatment length.
Scientists at Columbia University's Mailman School of Public Health used MassTag PCR to detect a new human rhinovirus as the cause of severe pediatric respiratory tract infections in Europe. Human rhinoviruses are frequent causes of respiratory illness worldwide, and this discovery confirms earlier findings in New York.
Researchers found that Yellowstone viruses migrate from pool to pool through droplets of steam, thriving in acidic environments even when hosts are rare. This discovery sheds light on how these viruses survive and interact with microbes in hostile surroundings.
A study of 124 patients with acute viral hepatitis found that 5.65% had mild pancreatitis, all of whom recovered on conservative management. Patients with severe abdominal pain should undergo serum amylase and ultrasonography to rule out pancreatitis as a cause.
Researchers developed a new virotherapeutic targeting cancer cells expressing E2F and EGFR proteins, showing antitumor effects in mice and rabbits. The virus demonstrated high selectivity for cancer cells in tumor-bearing rabbits and human tissue samples.
A new study suggests that viruses may contribute to cancer by causing excessive death to normal cells while promoting the growth of surviving cells with cancerous traits. The Phoenix Paradigm model proposes a separate mechanism where viral infection selects pre-existing mutated clones, promoting their further growth and multiplication.
A team of researchers has found a strong correlation between Israeli Acute Paralysis Virus (IAPV) genetic material and Colony Collapse Disorder (CCD) in bees. The prevalence of IAPV, the timing of outbreaks, and geographical circumstances suggest that IAPV is a significant marker for CCD.
A new University of Georgia study reveals that sewage-contaminated groundwater is contaminating coral reefs up to six miles offshore in the Upper Florida Keys. The study found common fecal indicator bacteria and human viruses in surface water, groundwater, and corals.
Researchers discovered that PKR enzyme plays a crucial role in the antiviral effect of interferon against some viruses. They found that PKR affects protein synthesis and apoptosis, leading to reduced cell death and viral replication in response to stimuli.
Angela Belcher's research with viruses is developing faster, better, cheaper, and environmentally-friendly electronic devices. Her nanofactories generate little waste, grow at room temperature, and promise to be inexpensive and largely biodegradable.
A new reovirus has been isolated from bats and can cause a serious but non-fatal respiratory illness in humans. The virus, named Melaka, is closely related to two other bat-borne reoviruses and can be transmitted between people.
A researcher at Kansas State University has created a special habitat for the yellow fever mosquito in an effort to understand how viruses disrupt programmed cell death. The goal is to determine if mosquitoes can be made immune to viruses, which could lead to breakthroughs in treating diseases like dengue fever and Alzheimer's.
Researchers have identified a new virus, known as the WU virus, potentially linked to unexplained respiratory infections. The virus was detected in patients' nasal secretions using high-throughput DNA sequencing and shows similarities to polyoma viruses.
A study by Queensland University of Technology found that droplets carrying viruses can travel large distances in the air, posing a risk to people breathing nearby. The research dispels the myth that viruses only travel a short distance from a person, suggesting that one infected individual can spread the virus simply by exhaling.
Research by Cold Spring Harbor Laboratory finds that harmless viruses can cause cancer through chromosomal instability, potentially leading to cancer progression. Protecting against these viruses may decrease cancer incidence.
Researchers discovered that New World arenaviruses enter cells through the transferrin receptor 1 (TfR1), a well-known protein involved in iron uptake. Inhibiting this receptor may help reduce infection severity and develop a treatment strategy.
A University of Alberta study reveals that travelers are aware of some key factors in avoiding and treating travellers' diarrhea, but lack knowledge on others. The study found that hand-washing is an effective way to ward off the sickness, but many travelers are unaware of the risks of chlorinated water and viral causes.
Researchers in Taiwan create a new method to accurately analyze the masses of individual, intact viruses using a miniaturized ion trap. They achieve a margin of error of ±1% by employing a gentle ionization technique and a specially designed cylindrical ion trap.
Researchers found that Cucumber mosaic virus (CMV) synthesizes a protein, called 2b, to bind and inhibit AGO1, attenuating RNA silencing. Understanding the function of 2b will enable designing novel strategies for crop plants to survive various viruses.
Researchers created a biosensor using quantum dots to mimic the clustering of MHC proteins on target cells, revealing strong contributions from non-viral peptide-MHC interaction with co-receptors. This cooperativity suggests that a single virus-MHC complex recognized in self-MHC complexes can activate a T-cell response.
Researchers found that some viruses, like the human polyomavirus JCV, may be evolving at higher rates than previously assumed. The virus is traditionally used as a genetic marker for human migration and evolution, but its reliability has been called into question by this new study.
Monash PhD researcher Ms Fleur Tynan has been awarded a Victoria Fellowship to study advanced cellular imaging techniques at Stanford University. Her research focuses on the human immune response to viruses, which may lead to developing therapeutics that assist in the anti-viral immune response.
Cells use a molecular signature to distinguish their own RNA from viral RNA, triggering an immune response and cell suicide. This discovery opens up new possibilities for therapy, including using triphosphate-end RNAs to trigger anti-viral responses and gene therapy.
Researchers at Virginia Tech have designed polymer macromolecules as effective gene transfer agents, overcoming the need for foreign DNA and viruses. The study's findings focus on the structure of these molecules, which can control their ability to transfer genes across cell membranes.
Stanford engineer James Swartz has made significant advances in cell-free protein synthesis, including the production of nanoscale viral spheres that can act as delivery trucks for new vaccines. These engineered capsids have the potential to provide safer and more effective vaccinations by targeting specific immune-system cells.
Researchers discovered that viruses can infect cells more efficiently by attaching to different carbohydrates on the cell surface. This finding helps explain how flu and other viruses evade the immune system and may be useful for developing gene therapies for cancer and brain diseases.
A team of researchers at Cornell University has developed a biodegradable absorbent wipe that can detect bacteria, viruses, and other biohazards using sensitive nanofibers. The innovative material is inexpensive, easy to use, and can provide fast indication of contaminant presence, enabling quick disinfection and retesting.
Scientists identified a genetic element that the dengue virus uses to replicate, triggering the potentially fatal illness known as dengue hemorrhagic fever. The discovery provides a model for RNA replication in flaviviruses, which cause millions of cases of human illness each year.
The Chikungunya outbreak in the Indian Ocean affects several islands and India, with a large portion of populations infected. The disease is caused by the chikungunya virus, spread by mosquito bites, and has no specific treatment. Genetic analysis reveals unique molecular features among outbreak strains.
Recent studies demonstrate improved virus suppression with novel therapy combinations for hepatitis treatment, including valopicitabine plus peg-interferon. Researchers found a higher dose of the drug showed promising results, but also led to side effects that forced dosage reduction.
Researchers have developed a mass spectrometry method to detect norovirus particles, a category B bioterrorism agent. This technique can identify different types and strains of viruses in complex environmental samples without prior knowledge, making it ideal for detecting emerging infectious agents.
The MIT team used an intricate assembly process to create a functional electronic device from viruses, producing dense films of cobalt oxide and gold. The result is a nanoscale battery material with high energy density, suitable for compact energy storage applications.
Research by Sallie Chisholm and colleagues reveals genetic variation related to the environment in even the smallest ocean organisms. The findings suggest that viruses play a key role in transferring genes between microbes, enabling them to adapt to changing conditions.
A study published in Nature found that cells deep within the human respiratory system have surface molecules that allow the avian flu virus to enter and infect cells, but not easily transmit between humans. The discovery provides a possible explanation for why bird flu is rarely transmitted among humans.
Research suggests that birds with large forehead spots, indicating good health, are more likely to produce antibodies against Newcastle virus. This study provides insight into the evolutionary pressures driving the development of attractive features in animals.
Research reveals that animals rapidly evolve genes controlling their immune system to fight viruses, outpacing most other genes in the process. This highlights the vital role of RNAi mechanisms in antiviral defense and demonstrates the dynamic evolution of host organisms in response to viral strategies.
Researchers found that carnivore parvoviruses and the human B19 erythrovirus undergo rapid evolution when switching host species. This contradicts the assumption that DNA viruses exhibit slower mutation rates compared to their hosts and other DNA viruses.
Biologists have completed the first computer simulation of an entire life form, a virus, to study its dynamics and mechanistic properties. The simulations provided crucial information on the virus's assembly and could contribute to improvements in public health and the creation of artificial nanomachines.
Researchers at EMBL and IVMS have obtained a detailed structural picture of the ZEBRA protein, which plays a key role in activating the EBV. The study reveals a potential weak point that could be targeted by antiviral drugs to block the virus's activation.
Researchers at UC Berkeley have successfully forced a benign virus to evolve into a more effective delivery vehicle for genes in gene therapy. By accelerating the process of viral evolution, they were able to bypass the immune system's defenses and increase the virus's ability to deliver genes to target cells.
A randomized controlled study found that pretreating patients with hepatocellular carcinoma (HCC) undergoing chemotherapy with lamivudine significantly reduces the risk of Hepatitis B reactivation and severe hepatitis. The study identified a lower viral load threshold as a better predictor of relapse.
A novel pathway for detecting intracellular DNA has been identified, suggesting a unique immune response differs from RNA viruses. This discovery sheds light on the mechanisms of antiviral responses and how cells discern viral and self-DNA.
A Yale study reveals how toll-like receptors recognize viral infections without self-DNA recognition, highlighting potential for treating autoimmune disorders like SLE. The research also shows that TLR localization is crucial in maintaining the balance between viral and self nucleic acid recognition.
NIH-funded scientists developed a glycan array tool to detect changes in flu viruses that precede human infection. The technology can monitor the emergence of efficient flu strains from avian origin.
A randomized study of 73 Indian children with viral gastroenteritis found that Pedialyte and Gatorade were equally effective in improving stool frequency, consistency, and body weight. The solutions also proved safe, but a few patients experienced persistent potassium deficiency or hyponatremia.
Computer models aid understanding of antibody-dependent enhancement in the spread of dengue fever, finding that enhanced viruses can spread faster but face extinction due to over-exploitation. The research has implications for designing optimal dengue vaccination strategies.
A new NIH grant will use electrical engineering concepts to profile host-virus interactions and identify immune responses. The study aims to develop a quantitative method to analyze the interaction between viruses and host cells, potentially leading to faster diagnosis and treatment of viral infections.
A team of researchers has isolated the Ephrin-B2 cell surface protein as a functional receptor for both Hendra and Nipah viruses, shedding light on their ability to infect a wide range of hosts. The finding holds promise for developing countermeasures to prevent and treat these emerging global health threats.
Researchers at UCLA and USUHS discovered the Ephrin-B2 receptor as the doorway for Nipah and Hendra viruses to enter cells. This finding promises to lead to better understanding of how these viruses cause disease in humans and animals, ultimately aiding in vaccine and treatment development.
Researchers have genetically altered a herpes simplex virus to selectively target and kill malignant glioma cells, with promising results in mouse studies. The modified virus can extend the lives of animals with implanted human gliomas by several days.