Articles tagged with Viral Infections
Researchers develop novel cell culture strategy to investigate early stages of HPV infection, revealing key genetic information about viral life cycle. The approach enables high infection rates in keratinocytes, allowing for the study of HPV's role in cancer development.
Wolbachia blocks viral replication in mosquito cells by degrading viral RNA, with XRN1 playing a key role. The bacterium's ability to prevent disease transmission depends on the virus's replication rate.
Scientists have discovered that the CRISPR-Cas9 protein can also cut RNA, expanding its potential uses in gene editing and virus detection. This breakthrough could lead to new treatments for genetic diseases and improved food and energy crops.
A large-scale study of French volunteers found significant immune variation among individuals due to differences in sex and age, as well as genetic variations. These findings shed new light on potential causes of diseases such as pollen allergy and lupus erythematosus.
Research found that flu strains H3N2 and H7N7 caused memory impairments and structural changes in the hippocampus of mice. The infections also activated brain immune cells and altered gene expression, suggesting a potential threat to healthy brain function.
Researchers found that bats have a dampened STING-interferon pathway, allowing them to maintain a balance with viruses without triggering an immune reaction. This defense strategy is thought to have evolved as part of bat biology, including their ability to fly and host a large viral reservoir.
Researchers found that Zika virus infection causes death of glioblastoma cells, a common and aggressive type of brain tumor. The study suggests that genetically modifying Zika virus to produce the digoxin molecule could be an alternative treatment for glioblastoma.
Researchers at Joslin Diabetes Center discovered that four viruses can produce insulin-like hormones that bind to human insulin receptors and stimulate cellular signaling. This finding opens up a new field of study in microbial endocrinology, potentially revealing biological mechanisms behind diabetes, autoimmune disease, and cancer.
A chamber design separates airborne influenza particles by size, revealing that ferrets transmit the virus via particles ranging from 15 μm to 1.5 μm before fever onset and after infection. This study provides insights into the efficient transmission ranges for influenza in ferrets.
A new multiplex test can detect six of eight tick-borne pathogens including Lyme disease simultaneously in a single blood test, offering improved diagnostic accuracy. The test's potential for early detection and treatment is expected to improve patient outcomes for those infected with tick-borne diseases.
Researchers will collect data from survivors of viral outbreaks to understand how some people fight off the disease. The goal is to inform vaccine design, develop new diagnostics, and prevent future outbreaks.
A special issue of Human Gene Therapy highlights Chinese research advancements in gene and cell therapy, including novel viral and nonviral vectors for gene delivery. The articles explore innovative applications of CRISPR technology in various disease areas.
Researchers at the German Primate Center have improved DNA transfer in gene therapy by modifying viruses to produce a protein called CD9, which increases exosome production and virus efficiency. This results in an 80% infection rate, making gene therapies more efficient.
Researchers discover ebselen alleviates testicular symptoms and prevents sexual Zika transmission in mice. The antioxidant treatment also shows promise in preventing the virus's spread among humans.
Scientists at Imperial College London have developed an organ-on-chip technology to study the interaction of pathogens with artificial human organs. They tested the artificial liver's response to hepatitis B virus infection, revealing intricate mechanisms of immune evasion that could be exploited for future drug development.
A new clinical trial aims to determine if low procalcitonin levels indicate a viral lower respiratory tract infection that won't improve with antibiotic treatment. The study will enroll patients with suspected LRTIs and low PCT blood levels, and test whether they respond differently to azithromycin or placebo.
A study found that Ebola virus infects reproductive organs of macaques, suggesting similar infection in humans. The virus can persist in female reproductive tissues and may reach seminal fluid in men.
Researchers found subtle changes in fetal brains infected with Zika virus during pregnancy, which can lead to significant learning problems and mental health disorders. The study suggests that children infected with the virus at a young age may also be at risk of brain damage.
Researchers found that genes in neural progenitor cells of affected babies were more active or less active in key signaling pathways, contributing to the development of congenital Zika syndrome. The study used twins and induced pluripotent stem cell technology to replicate the virus's effects in vitro.
Researchers found genetic clues to distinct susceptibility to virus infection in congenital Zika syndrome, using Brazilian twin babies with different outcomes. The study revealed a single gene cannot explain the cases of CZS development nor brain resistance to Zika virus.
Platelets have been found to act as the immune system's first responders when a virus, bacterium, or allergen enters the bloodstream. They release serotonin, which triggers an inflammatory response in mice with antigen-antibody complexes, leading to septic or anaphylactic shock.
Researchers have created a stealth virus that effectively recognizes and infects tumor cells using adapter molecules. The virus is protected by a novel protein shield that prevents immune system elimination, opening up avenues for treating aggressive cancers.
A new study from Washington University School of Medicine found that West Nile and Powassan viruses can cause brain damage and fetal death in mice, similar to Zika. The study suggests that these flaviviruses may also pose a risk to developing fetuses in humans.
Researchers found that relatives of Zika virus can damage developing fetuses in mice and replicate in human tissues, raising concerns about other emerging viruses causing birth defects. The study suggests that flavivirus infections might cause pregnancy complications more frequently than previously appreciated.
A recent study published in Nature Scientific Reports suggests that containment measures during epidemics can make a society less resilient and more vulnerable to economic and social disruption. By limiting mobility, authorities may create greater risks than they mitigate. The study's findings highlight the need for policymakers to con...
Researchers found that a repurposed drug used to treat Hepatitis C effectively protected and rescued neural cells infected by the Zika virus in both cell cultures and mouse models. The study suggests that the drug could be effective against Zika-infected adults, including pregnant women.
Researchers at MIT and Albert Einstein College of Medicine isolate and study a new group of viruses that lack tails and can infect dozens of different types of bacteria. The Autolykiviridae provide key insights into viral evolution, bacterial populations, and the ocean's ecosystem.
Researchers at ICES and PHO found a significant association between acute respiratory infections, particularly influenza, and acute myocardial infarction. The risk is higher for older adults, patients with influenza B infections, and those experiencing their first heart attack.
A new study published in mBio found that people with higher levels of anti-HA stem antibodies have less viral shedding when they get the flu, but do not have fewer or less severe signs of illness. The study suggests that these antibody levels are not independent predictors of whether someone becomes sick or how severely.
Researchers used a plant virus to study how plants defend themselves against invading pathogens, revealing key receptor proteins that regulate RNA interference. The findings also identified a suppressor protein named C4 used by the virus to disarm the plant's defence mechanism.
A new study by University of Waterloo researchers found that vaccines used by commercial fish farmers are not protecting fish from disease, with vaccinated fish showing more symptoms and higher death rates. The study highlights the need for veterinary pharmaceutical companies to redesign and test vaccines tailored to fish immune systems.
A major review by UNSW medical researchers has identified Enterovirus D68 as the likely cause of a mystery polio-like illness that paralysed children in the affected regions. The study used Bradfield Hill criteria to determine causality and found strong evidence linking EV-D68 to acute flaccid myelitis.
A new University of Maryland-led study reveals that people with the flu can generate infectious aerosols even when not coughing, and especially during the first days of illness. This finding suggests that airborne transmission may be a significant route of flu spread.
Researchers found that Zika virus infection in pregnant rhesus monkeys caused placental tissues to become thickened and inflamed, leading to decreased oxygen levels and impaired fetal development. The study's findings may provide important insights into preventing Zika virus infection and disease during pregnancy.
A two-year-old female Far Eastern leopard was found with severe neurological disease and euthanized due to poor health. The discovery confirms canine distemper virus in the species, which is already critically endangered.
A study in mice suggests that West Nile virus infection can lead to persistent neurological problems due to unresolved inflammation. Targeting this inflammation with an arthritis drug may prevent some of these problems with memory.
Researchers analyzed immune cells of children with flu symptoms and found that previous exposures to viruses influence the immune response. The study identified changes in key immune pathways that may lead to better therapies for young patients with acute respiratory tract infections.
A human protein called prohibitin may play a significant role in infection of the nervous system by EV71 virus. The study found that inhibitin is required for entry and replication of the virus within cells.
Research suggests that different bacterial strains can provoke varied immune responses in humans, contradicting previous studies that used a single strain. This variability is contributed by viruses infecting the bacteria, and may help predict disease outcomes and tailor treatment.
Researchers discovered that dengue virus takes over an accordion-shaped structure within host cells to produce proteins, while avoiding the larger fluid-filled space of the cell. This subtle approach allows the virus to reproduce tens of thousands of times without triggering the body's defenses.
Researchers at The Scripps Research Institute have discovered the workings of a promising treatment for Marburg virus, which has a mortality rate of up to 88 percent. The treatment, MR191, targets a conserved site on the virus and neutralizes it by mimicking the host receptor.
A Brazilian research team discovered a cellular signaling pathway involved in both the immune response to Zika and neurogenesis, a process of new neuron formation. The study found that peptides from the renin-angiotensin system played a key role in this pathway.
A team of scientists discovered that beneficial viruses can integrate into bacteria carrying restriction-modification systems, which protect them from lethal infections. The study showed that these systems offer a temporary respite, allowing bacterial populations to grow and increasing the chances of acquiring beneficial viruses.
A study published in Science Immunology suggests that Zika virus triggers an immune response that can cause abnormal placental development and restricted fetal growth. Researchers found that the immune system's antiviral proteins, known as type I interferons, can be detrimental to fetal development if present in excess.
Researchers have discovered a way to prevent the Ebola virus from spreading by inhibiting a specific enzyme that allows it to copy itself. By blocking this enzyme, the virus's ability to produce more infection is reduced, suggesting potential breakthrough in treatment.
Researchers found that Wolbachia-infected mosquitoes exhibited reduced dengue virus transmission potential by up to 50% compared to uninfected mosquitoes. Laboratory conditions underestimated this effect, suggesting improved vaccines and disease management approaches are needed.
The Zika pandemic has infected millions of people across over 80 countries, leaving many babies with birth defects. Researchers are working toward treatments and a preventive vaccine, but experts warn that the virus may reemerge more aggressively.
Researchers at University of Utah Health have found a way for cells to destroy viruses without harming themselves. The study reveals how the protein Dicer, which is part of normal cell function, uses a different mechanism to process viral dsRNA.
A new test measures RNA or protein molecules in human cells to identify viral infections, potentially replacing current methods for respiratory viral illnesses. The test was found to predict respiratory viral infection with 97% accuracy and could help diagnose patients more quickly and accurately.
A large cohort study found that 25% of chikungunya-infected individuals experienced chronic joint pain two years after initial infection. The researchers also identified several predictors of persistent joint pain, including being a college graduate and having severe initial symptoms.
Researchers have identified an antibody that can block entry to the host cell, providing a basis for safe and broad-spectrum anti-dengue therapy. The study also revealed the structural basis of the antibody binding to individual dengue viruses, which could help explain why some vaccines may not work.
New research reveals that viruses can transfer genes to organisms from different superkingdoms, including bacteria and complex organisms like plants and animals. This discovery suggests that viruses may have originated from primitive cells and could be a source of new genes for cellular organisms.
Researchers found that Ebola survivors' immune systems may provide some protection against future infection. The study, led by UCLA, located 14 survivors of the 1976 outbreak who still lived in the same remote villages.
Researchers developed a mouse model to study PRV's pathogenesis, virulence, and treatment efficacy. The model showed that the lung was the primary target organ for replication and demonstrated protective effects of antiserum and non-lethal doses.
A study found that lactic acid bacteria can protect against different subtypes of influenza A virus, resulting in reduced weight loss and lower amounts of virus replication in the lungs. The researchers used a heat-killed strain of Lactobacillus casei DK128 to pretreat mice before infecting them with the virus.
A Canadian academic investigated the claim of man flu, suggesting adult men have a higher risk of hospital admission and influenza-associated deaths compared to women. Men also exhibit higher rates of complications and mortality from acute respiratory diseases due to their less robust immune system.
A new animal model has been developed at Texas Biomedical Research Institute to mimic key features of the Zika virus infection, including lingering presence in bodily fluids. The marmoset model is useful for testing new drugs and vaccines, and may help identify places where transmission can be blocked.
Dr Catherine Bell suggests that exposure to Peppa Pig may encourage patients to seek unnecessary medical attention and visits. She analyzes three case studies, highlighting the potential impact of the show on patient behavior and primary care services.
Researchers at Osaka University identify a compound effective against drug-resistant HCV, inhibiting its maturation process. The dibenzoazepine structure is responsible for its effectiveness, allowing for potential modifications to combat other diseases.
A study published in mBio reveals a strong connection between the onset and severity of acute infectious mononucleosis (mono or 'kissing disease') and the T-cell population, specifically those that react to both EBV and influenza A virus. Individuals with severe cases of mono have higher levels of cross-reactive T-cells, while those wi...