Articles tagged with Viral Infections
Researchers develop gene pyramiding technique to combine resistance genes for robust protection against mixed begomovirus infections. This approach overcomes limitations of individual resistance genes, providing a promising strategy for sustainable crop protection in regions affected by devastating viral diseases.
Researchers have identified a critical step in SARS-CoV-2 viral infection: the protective role of ORF3a, which forms dense bodies surrounding the spike protein to prevent it from being cut into smaller components. This finding could lead to new therapeutic targets and vaccine development strategies.
A national decline in measles-mumps-rubella (MMR) vaccinations has been observed across US counties since the start of the COVID-19 pandemic, with an average decline of 2.67% and 78% of counties reporting drops in vaccinations.
A new study finds that bats are a reservoir for morbilliviruses, including the human measles virus, and can transmit them to other mammalian species, such as monkeys. The research suggests that these viruses have crossed species boundaries multiple times, posing a significant threat to human health and livestock.
A systematic review found that vaccinating children as early as four months of age for measles could provide sustained protection throughout infancy. However, several barriers exist, including cost-effectiveness and vaccine hesitancy, which need to be addressed to consider an earlier first dose.
Researchers analyzed trends in healthcare utilization among Japan's oldest-old population aged 75 years and above during the extended COVID-19 pandemic. The analysis revealed a modest drop in medical services and outpatient visits, while healthcare costs remained stable despite decreased patient volumes.
The Zika virus employs its host cells' autophagy mechanism to suppress proteins that would trigger an antiviral response, allowing for sustained infection. This unique strategy involves the manipulation of three proteins on the viral membrane, which are also involved in viral entry and replication.
A new study led by Boston University School of Public Health reveals that US excess deaths have been increasing for decades, with working-age adults disproportionately affected. The study found that over 1.5 million 'missing Americans' would have been averted if the US had mortality rates similar to other high-income countries.
CoVFit integrates molecular data with large-scale epidemiological data to predict the fitness of SARS-CoV-2 variants. The model was trained on mutations in the spike protein and population-level trends, enabling accurate predictions of variant fitness.
Researchers at La Jolla Institute for Immunology discovered that CD4+ T cells target Chikungunya virus, leading to chronic inflammation and joint pain. The study suggests that these monofunctional T cells may be the culprits behind arthritis-like symptoms in CHIKV patients.
A recent survey found that over 83% of Americans believe the benefits of the MMR vaccine for children outweigh the risks, despite a current measles outbreak. The survey also showed that vaccination rates are dropping and many people lack knowledge about measles symptoms and prevention.
A study by Korea University researchers has identified the association between viral infections and neurodegenerative diseases, such as Alzheimer's. They developed a therapeutic candidate ALT001 that improves mitophagy, reduces neuroinflammation, and suppresses viral replication.
Scientists have created a comprehensive bat organoid model to study zoonotic viruses, enabling early detection and drug testing for future outbreaks. The platform, comprising diverse bat species and organs, has led to breakthroughs in understanding virus behavior, isolation, and treatment.
Researchers at KAIST have identified a critical protein called SLIRP that acts as an 'immune switch' regulating immune responses to viruses and autoimmune diseases. Suppressing SLIRP can alleviate abnormal immune responses in patients with Sjögren's syndrome, coronavirus, and encephalomyocarditis virus infection.
A meta-analysis of over 140,000 participants found a significant association between excess weight and neurological/neuropsychiatric symptoms in post-COVID-19 condition. The study suggests that maintaining a healthy weight may be crucial in mitigating these symptoms.
Researchers have discovered that silver nanoparticles produced by the fungus Trichoderma reesei can inhibit the infection of SARS-CoV-2 in hamster lungs, reducing inflammation and viral load. The study also suggests that these nanoparticles could be used to prevent and treat other viral diseases, such as HIV/AIDS, shingles, and influenza.
Researchers discovered that herpesvirus protein kinases mimic human cyclin-dependent kinases, regulating viral infection and latency. Phosphorylation of the viral enzyme contributes to its survival and persistence, while phosphorylation downregulates its activity, allowing for balance between host survival and viral persistence.
Researchers at Karolinska Institutet have identified biomarkers in the blood associated with long COVID symptoms, particularly severe respiratory disorders. The study found that these biomarkers are also linked to inflammatory signal pathways involved in cell death and lung damage.
Scientists have discovered a novel immune signaling pathway in bacteria that turns viral infection machinery against the virus, potentially informing future biotech tools and phage therapy. This discovery reveals an ancient defense strategy that could help fight superbugs.
Researchers at the University of Gothenburg discovered that the influenza A virus exploits a protein called AGO2 to regulate gene activity and weaken the immune system. An existing drug, arsenic trioxide, showed promise in increasing interferon production and reducing viral loads.
The VAST project seeks to understand the normal human virome, the vast ecosystem of viruses living in and on humans. By analyzing tens of thousands of samples from diverse populations, researchers aim to identify how a healthy virome shifts with disease or environmental factors.
A new study by Hokkaido University found that colder temperatures significantly increase the risk of gastroenteritis among Rohingya refugees in Bangladesh's Kutupalong and Nayapara camps. The study reveals a link between temperature changes and gastroenteritis risk, with both extreme cold and heat contributing to higher numbers of cases.
Severe RSV disease among children is more likely those aged 2 or older with pulmonary or neurologic conditions. Younger children under 6 months and prematurity are high-risk factors for severe RSV in younger kids.
Researchers at University of Würzburg unveil novel mechanisms in the immune system's defense cell proliferation and specialization. The findings reveal a cyclical activation process driving the immune response, with potential implications for immunotherapies targeting cancer and chronic infections.
Researchers found a novel virus in the model green alga Chlamydomonas reinhardtii, which is the largest temperate virus discovered to date with a latent infection cycle. The discovery sheds light on potential biotechnological applications, including gene editing.
Researchers have found that a specific protein modification to the immune protein MDA5 can block viral replication and reduce heart inflammation. The study's findings could lead to the development of broad-spectrum antiviral treatments that target multiple viruses.
Researchers found that full-genome differences between rotavirus strains influence vaccine effectiveness, highlighting the need for a broader approach to vaccine design. The study's results suggest that vaccines should be designed based on the whole genome of circulating strains, rather than just two surface proteins.
Researchers have made significant discoveries about the role of GP38 in viral infections and pathogenesis, highlighting its potential as a target for vaccines and medical countermeasures. Non-neutralizing GP38-specific antibodies have shown protective efficacy against lethal challenge, reducing circulating GP38 and vascular leak.
A single mutation in the spike protein of western equine encephalitis virus is enough to prevent it from attaching to human and horse cells. However, a change in the viral spike protein enables WEEV strains to attach to a different receptor, found on mammalian brain cells, which is shared by its cousin eastern equine encephalitis virus.
Researchers have discovered a protective cloaking mechanism in jumbo phages that shield their genetic material from the host's immune system. This innovation could lead to new therapies for antibiotic-resistant infections.
Researchers at the University of Surrey warn that mpox's sustained human-to-human transmission poses a significant risk to global health. The virus can cause a painful rash, fever, and swollen glands, and has the potential to spread among children, who are at greater risk of serious illness.
A new study reveals that the presence of Nora virus in laboratory strains of Drosophila fruit flies can increase their sensitivity to bacterial infection and limit their lifespan. Flies with persistent viral infections have higher stem cell growth rates, making them more susceptible to secondary pathogenic infections.
A cross-sectional study found that hospitalized adults with RSV vaccine eligibility were more likely to receive the vaccine. Sociodemographic differences in vaccine uptake occurred, suggesting appropriate prioritization of populations with increased risk.
A study by Ann & Robert H Lurie Children's Hospital of Chicago strongly suggests that Kawasaki disease is caused by a single respiratory virus that has yet to be identified. The research found inclusion bodies in tissue samples from 20 years, indicating a common virus, and contradicting the theory of multiple pathogens.
Researchers tested various disinfectants to inactivate hepatitis A virus particles, finding only a few effective agents. The study suggests that surface disinfection could help prevent infection, especially in high-risk areas.
Larvae of wood frogs grow and mature precociously when infected with ranavirus, exhibiting accelerated growth and development. This may help tadpoles tolerate the energetic demands of infection or escape risky environments to avoid infection entirely.
A recent study reveals how Epstein-Barr virus (EBV) aggravates ulcerative colitis (UC) through macrophage pyroptosis, a form of inflammatory cell death. EBV infection accelerates glycolysis, leading to increased inflammation and intestinal damage in UC patients.
Scientists at Johns Hopkins Medicine discovered how bacteria protect themselves from certain phage invaders by seizing genetic material from weakened, dormant phages and forming a biological 'memory' that their offspring inherit. This process allows the bacteria to recognize and fight off similar viruses in the future.
A groundbreaking study reveals a complete antiviral immune pathway in rice plants that recognizes viral coat proteins, degrades signaling pathways, and activates RNA silencing and reactive oxygen species to fend off viruses. This discovery paves the way for developing multi-target strategies for antiviral breeding of crops.
A recent study identifies 11 natural compounds that can inhibit the SARS-CoV-2 spike protein, including caffeine, which exhibits high binding stability and excellent solubility. The discovery highlights the potential of natural products in combating COVID-19 and demonstrates the versatility of widely known compounds like caffeine.
Researchers at Martin-Luther-Universität Halle-Wittenberg have developed a new avenue to combat the Cucumber mosaic virus by directing the plant's natural defences. The RNA-based active agents have shown high efficacy in laboratory experiments, protecting 80-100% of treated plants from infection.
Researchers at Penn State discovered that Zika virus builds tiny tunnels called tunneling nanotubes to transport material needed to infect nearby cells, including in placental cells. This allows the virus to cross the placental barrier without raising alarm in the immune system.
Scientists at St. Jude Children's Research Hospital found that frequently used flu antivirals do not work well against the H5N1 avian influenza virus in cows' milk. The study showed that reducing infection risk through methods like avoiding raw milk and minimizing dairy farm workers' exposures may be more effective interventions.
A study found that RSV hospitalization rates increase progressively with age among older adults in Spain, with those over 85 years old facing the highest risk. Certain chronic conditions, such as blood cancer, COPD, and cardiovascular disease, also significantly increase the risk of hospitalization.
A new study published in PLOS Medicine estimates that the COVID-19 pandemic cost Europe 16.8 million disability-free years of life between 2020 and 2022. The study found that more than half of these lost years would have been lived without disability, highlighting the pandemic's long-term impact on older populations.
Research finds that certain viral antibodies and genetic risk factors can increase MS risk, with elevated antibody levels combined with a specific gene variant associated with strong increased risk. The study also identifies potential biomarkers for early diagnosis.
A study published in Human Gene Therapy found that over half of individuals with Niemann-Pick disease type C1 lacked neutralizing antibodies against AAV2 and AAV9. This absence of antibodies may impact the effectiveness of gene therapy treatments for this rare disorder.
Eradivir's EV25 is a small molecule immunotherapy biotech company developing treatments for influenza. The Phase 2 challenge study will gather safety and efficacy data from healthy participants infected with influenza.
Researchers at Aalto University and others have developed a model that shows smartwatches can accurately detect viral infections several days before symptoms appear. This early detection can lead to significant reductions in disease transmission and could potentially stop a pandemic before it starts.
A longitudinal study found that EBV infection predisposes people to develop Crohn's disease, with a five-to-seven-year delay between exposure and diagnosis. The study suggests that EBV may alter the immune system leading to Crohn's disease.
The influenza vaccine provided moderate protection against influenza A strains, but strong protection against influenza B. The vaccine was most effective in preventing severe disease among children and adolescents, with a high effectiveness rate.
Enodia Therapeutics, launched by Institut Pasteur and Argobio, leverages AI to develop selective inhibitors of the Sec61/translocon molecular complex for treating cancer, inflammatory diseases, and viral infections. The company's breakthrough technology has earned a prestigious Golden Ticket Award from Pfizer.
A study suggests that pre-existing immunity against seasonal H1N1 flu can reduce the severity of bird flu in ferrets. In the study, ferrets with prior H1N1 immunity were protected against severe disease and death caused by H5N1 bird flu, whereas those without prior immunity had more severe illness and fatal outcomes.
A new integrated 3D imaging approach has revealed exquisite detail of the virus assembly process used by herpes simplex virus during replication. The research identified previously unknown functions of HSV-1 structural proteins and provided insights into the unmutated gene's usual role in viral assembly.
Researchers analyzed protein-coding RNA transcripts from single cells and lung fluid of infected pigs, monitoring immune cell alterations triggered by PRRSV strains of varying virulence. They found that high-virulence PRRSV caused severe lung damage and immune imbalance, while less virulent strains led to delayed lung damage with fewer...
A new study led by La Jolla Institute for Immunology scientists found that children who experience multiple dengue virus infections develop protective T cells, which help fight the virus. These T cells appear to be key to dengue virus immunity and may inform the development of a vaccine that prompts a similar response.
A preclinical trial has uncovered how beta-glucan can 'reprogram' immune cells to prevent lung inflammation and reduce the risk of illness and death from influenza. The study's findings highlight beta-glucan as a promising therapy for influenza and other emerging viral pathogens.
A new retrospective study found that nearly half of patients with fever of unknown origin in sub-Saharan Africa had a detectable pathogen, including bacterial strains and hemorrhagic fever viruses. The study highlights the need for strengthened laboratory capacity to improve diagnosis and treatment.
Researchers at the University of Liège uncover a mechanism regulating the immune response against parasites, where virtual memory T cells express CD22 to prevent excessive inflammation. This discovery opens new perspectives on controlling immune responses and mitigating autoimmune diseases.
Researchers found positive correlations in susceptibility to viruses across diverse fruit fly species, suggesting a general pattern of resistance. The study's findings have implications for understanding viral evolution and predicting pandemics.