Articles tagged with Viral Infections
Photodynamic action weakens resistance to antibiotics in bacteria that attack airways, reducing the persistence of both standard and clinical strains. The study found that five cycles of PDI were sufficient to break the resistance of resistant bacteria.
Researchers found that Ebola virus creates tunneling nanotubes to transfer particles to new cells, evading treatments and spreading infection. The discovery suggests a new route of dissemination for the deadly virus.
A team of scientists has decoded the evolution of Marek's Disease Virus, a fatal disease in chickens, using ancient DNA from up to 1,000-year-old chicken bones. The study found that the virus was already widely distributed over 1,000 years ago and became increasingly aggressive due to global chicken farming and vaccine use.
A team of scientists used ancient DNA to trace the evolution of Marek's Disease Virus, revealing genetic alterations that increased its virulence over time. The study highlights the importance of preserving archaeological remains in understanding the emergence of deadly diseases.
Two Melbourne-made COVID-19 vaccines demonstrated strong boosting capabilities against SARS-CoV-2 variants in a Phase 1 clinical trial. The vaccines focus the immune response on the receptor binding domain, potentially providing a more efficient approach to boost immunity.
Researchers at Baylor College of Medicine discovered a new mechanism by which rotavirus induces diarrhea, involving the degradation of DGAT1 enzyme in intestinal cells. This process leads to reduced nutrient absorption and disruption of intestinal function.
A new method developed at Karolinska Institutet can identify unique immune cell receptors and their location in human tissue. This breakthrough could lead to the development of novel therapies for diseases such as cancer and autoimmune disorders, by pinpointing the specific immune cells responsible.
Researchers have discovered that a nanoemulsion made from copaiba oil has antiviral effects against zika virus, showing 80% viral RNA inhibition. The study's results pave the way for developing medications or specific vaccines against zika.
The BioSPACE project aims to provide farmers, environmental agencies, and water-reliant industries with portable sensors to rapidly detect germs that threaten marine and freshwater life. The economic burden caused by waterborne diseases exceeds $3 billion in direct health care costs each year in the United States.
Research found that being overweight hampers the body's immune response to SARS-CoV-2 infection, leading to reduced antibody levels and activity. However, vaccination offered protection against COVID-19. The study suggests personalized recommendations for overweight individuals to ensure better COVID-19 management.
A new vaccine patch has delivered an effective immune response to Zika virus in mice, providing rapid protection against the disease. The patch, which uses a high-density microarray platform, targets a specific protein crucial to the virus's survival and evokes T-cell responses up to 270% higher than traditional vaccines.
A new study discovered microplastics in the placentas of Hawaiʻi mothers between 2006 and 2021, with increasing presence found each year. The researchers believe microplastics may be ingested through food or inhaling dust particles, raising concerns about their impact on fetal health.
A groundbreaking study analyzed the behavior of atoms in COVID-19 proteins to understand its evolution and spread. The research found critical distinctions in mechanical stability among various virus strains, highlighting how these differences contribute to the virus's aggressiveness.
A study published in the International Journal of Disaster Risk Reduction found that individuals' behavior to prevent disease spread depends on their personal information sources and living situation. The researchers discovered a strong link between medical information consumption before the outbreak and mask-wearing behaviors, while s...
A systematic review of air filtration systems found little evidence to support their effectiveness in reducing the risk of viral infections. The study analyzed 32 studies and found no strong evidence that air treatment technologies can protect people from catching airborne respiratory or gastrointestinal infections.
Researchers found rabies virus variants closely related to those in White-tufted marmosets in bats, highlighting potential for human transmission. Genetic sequencing revealed complex spillover dynamics between hosts, emphasizing the need for public health measures and animal conservation.
A recent study reveals that NK cells can memorize viral antigens and differentiate into immune memory NK cells with considerable killing ability. Themis2, a cytoplasmic protein, plays a crucial role in regulating this process.
A recent study led by Duke-NUS Medical School found that prior maternal dengue immunity substantially increases the risk of severe birth defects induced by Zika virus infection during pregnancy. Pregnant mothers with pre-existing dengue antibodies are more likely to experience microcephaly and brain damage in their foetuses after Zika ...
Scientists analyzed body fluids from firefighters after rigorous training to understand the effects of intense physical exercise on the body. They found a decrease in inflammatory signals, which can improve breathing, but also increase vulnerability to viral respiratory infections.
A study by Lund University researchers mapped the effects of temperature on a virus particle's genetic material, revealing its rapid injection into cells at elevated temperatures. The findings suggest that higher body temperature may increase the risk of infection spread.
The HPV vaccine effectively clears most cancer-causing strains, but a new equilibrium of lower-risk HPV types emerges, suggesting a change in screening approaches. Vaccinating boys and girls may be necessary to clear all cancer-causing HPVs.
A study published in Cell Host and Microbe found that gender-neutral HPV vaccination is effective in preventing cervical cancer by inducing a stronger herd immunity. The vaccine protects against high-risk HPV types 16 and 18, which cause 70% of all HPV-related cervical cancers, and also provides cross-protection against low-risk types.
A team of experts identified 15 over-looked issues that could impact UK forests, including catastrophic ecosystem collapse, competition for water resources, and tree viral diseases. The research calls for urgent action to increase forest resilience.
A team of Spanish scientists discovered profound changes in dendritic cells during the immune response, which could lead to novel vaccines against bacterial and viral infections. The study found increased lipid peroxidation and MHC-I upregulation in post-synaptic dendritic cells, triggering efficient priming of CD8+ T cells.
A large-scale investigation found that one in seven people in the US reported having had long Covid by the end of 2022. Long Covid is associated with anxiety, low mood, and physical mobility problems. The risk of these symptoms appears to be lower for those who have been vaccinated.
Researchers at the University of Würzburg developed a new method to precisely analyze infection pathways of dangerous virus variants using 'clickable' pseudoviruses. These harmless impostors retain their activity and are highly fluorescent, allowing for better visualization of viral infections in living organisms.
Researchers found that higher ventilation rates do not necessarily prevent the spread of airborne diseases in cruise ship cabins. The ideal ventilation strategy involves medium flow rates during occupancy and increased airflow after evacuation to minimize droplet spreading.
A new project will monitor how changing environmental conditions shape viral outbreaks in wild rodent populations to identify hotspots with high potential for spillover into people. The team will use metaviromics and AI to analyze data from wild rodents in the UK and Eastern Uganda.
Mammalian cells consume bacteriophages, killing bacteria and promoting cellular growth and survival. The study suggests that phage particles serve as a nutritionally enriched resource, triggering signaling pathway events that enhance cellular health.
Researchers at Gwangju Institute of Science and Technology (GIST) have developed a deep learning-based biosensing platform called DeepGT, which can accurately quantify nanoscale bioparticles, including viruses. The platform harnesses the advantages of Gires-Tournois biosensors and AI to refine visual artifacts and extract relevant info...
A substantial burden of RSV-associated hospitalizations was found in Canadian pediatric hospitals, especially among infants under six months. The study suggests that preventive strategies for these young infants could lead to decreased RSV disease burden in children.
Scientists at Johns Hopkins Medicine have identified a protein mutation in CD8+ T cells that can make them more effective against cancer and infections. The mutated T cells were found to be more active when stimulated, persist longer, and expand in great numbers during the initial immune response.
A pilot study in Catalonia found that self-sampling is a feasible and acceptable method for diagnosing asymptomatic mpox. The study identified 7 positive cases, including 3 asymptomatic individuals, and estimated the prevalence of infection at 6.19%.
A study of 69,000 adults with hepatitis C virus (HCV) infection found no difference in sustained virologic response across alcohol use categories. This suggests that restricting access to direct-acting antiviral therapy based on alcohol use may create unnecessary barriers for patients. The findings challenge HCV elimination goals.
Researchers at Tokyo University of Science have uncovered a novel mechanism for sorting endocytic cargo, revealing a specific compartment within the trans-Golgi network that determines the fate of cargo. This discovery has implications for understanding basic life processes and diseases caused by disruptions in endocytosis.
Researchers at Cleveland Clinic have developed a potential vaccine candidate against Dabie Bandavirus using nanoparticles, which can deliver antigens at a lower dose with fewer side effects. The vaccine has shown promise in pre-clinical studies and could provide protection to adults over 50, who are most vulnerable to the virus.
A study of 68,000 patients with COVID-19 found that using Paxlovid or Lagevrio significantly reduced mortality and hospitalization rates in those at high risk of progressing to severe COVID-19, regardless of age, race, or virus strain. These medications can be used to treat non-hospitalized patients at high risk of severe disease.
A new CRISPR-based diagnostic tool, MPXV-CRISPR, has been developed in Australia to detect the monkeypox virus with high precision and speed. The tool can detect the virus in clinical samples in just 45 minutes, making it faster than current methods.
New research reveals that the Deformed wing virus DWV-A originated in Asia, contradicting previous European origins. The study found that Varroa mites transmitted the virus to European honey bees after their introduction to Asia, leading to widespread infections and colony declines.
Researchers at George Washington University found that Facebook's core design features undermine its policies aimed at removing Covid-19 vaccine misinformation. The platform's architecture, designed to build communities around shared interests, can inadvertently facilitate the spread of misinformation.
Scientists have found that lung-resident memory B cells, critical for pulmonary immunity, require interferon-gamma produced by T follicular helper cells to differentiate. These long-lived immune cells migrate to the lungs from draining lymph nodes and lie in wait to react quickly to future infections.
Accelerometer sensors can detect sickness behavior in wild boar, allowing for early detection of African Swine Fever. The study found that infected boars were 10-20% less active daily than healthy ones, making this technology a potential tool for disease control and prevention.
Researchers at the University of Missouri have identified a way to improve immunological memory produced by T cells in response to influenza infection, potentially leading to more effective vaccines and treatments. The study found that manipulating a molecular signaling pathway can strengthen and prolong the immune response.
Scientists have identified a molecule that effectively inhibits heparanase activity related to the herpes simplex virus, reducing its spread on human cells. The discovery is an important step towards developing a non-toxic heparanase inhibitor for clinical use.
Babies with more mature gut microbiota at one year old are less likely to develop allergy-related wheeze or asthma. The study, which followed 1074 babies from birth to four years old, found that increased maturity of the gut microbiota was associated with a lower risk of these conditions.
Researchers developed a long-lasting skin coating agent that kills pathogens on the hands, boosting the natural hand barrier. The agent retained high antimicrobial activity even two hours after application, and reduced survival time of coronaviruses and influenza viruses.
Researchers found that hepatitis C treatment improved response to hepatitis B vaccine in individuals who previously didn't respond. The study recommends checking for hepatitis B immune protection and offering vaccination after treatment.
Researchers discovered a subtype of avian flu virus is undergoing mutational changes that could increase its risk of being passed on to humans. The study found the virus can cause severe animal infections and be transmitted through airborne droplets.
University of Louisville researchers have received a five-year, $11.7 million National Institutes of Health grant to investigate the connection between microorganisms and disease. The study will focus on various chronic conditions, including Alzheimer's disease, heart disease, diabetes, periodontitis, and colorectal cancer.
SARS-CoV-2's nucleocapsid protein (N) uses human body temperature to replicate, binding to RNA motifs at specific spatial folds. The study reveals new functions and potential targets for antiviral drugs.
A new study reveals that using big data and machine learning can improve antimicrobial resistance surveillance in livestock production. The research found correlations between environmental variables, microbial communities, and antimicrobial resistance, suggesting multiple routes for improving surveillance.
Researchers found stable antibodies in 800-year-old medieval human teeth that can still recognize viral proteins, allowing them to study the history of infectious human diseases. This discovery expands the field of palaeoproteomics and may enable experts to analyze how human antibody responses developed over time.
Most U.S. infants requiring intensive care for RSV lower respiratory tract infections were young and healthy, born at term. RSV preventive measures targeting all infants are urgently needed to reduce severe illness burden.
A recent study published in Cell Host and Microbe reveals how flaviviruses hijack human cells to promote replication. The discovery of KAT5γ's critical role in viral replication paves the way for designing inhibitory molecules to stop viral replication.
Researchers examine translational studies on peripheral surrogates of tumor burden, including circulating tumor DNA, miRNA, and HPV-specific antibodies, to inform chemotherapy and immunotherapy strategies. These biomarkers show promise as prognostic and predictive markers of response to treatment.
Researchers at La Jolla Institute for Immunology have discovered the inner workings of Ebola virus replication inside host cells, revealing 'viral factories' that form clusters of viral proteins and genomes. These microscopic structures are formed in host cells and play a crucial role in the virus's life cycle.
Yale researchers have created a functional humanized liver in living mice, enabling scientists to study human-specific mechanisms for regulating cholesterol levels and treating chronic liver diseases. The discovery uses progenitor stem cells and mature cells from a human liver to mimic the cellular functions of a healthy human liver.
A vaccination campaign in Cambodia has successfully protected endangered wild cattle from lumpy skin disease (LSD), a highly contagious viral disease. The campaign, launched in collaboration with the Wildlife Conservation Society, has vaccinated over 20,000 domestic cattle and water buffalo to prevent the spread of LSD to wild ruminants.
Researchers found that Epstein-Barr virus induces B cell growth transformation through the activation of the cancer-related gene IMPDH2, leading to uncontrolled proliferation. The study used primary B cells and found that inhibiting IMPDH2 can suppress post-transplant lymphoproliferative disorder (PTLD) development.
A University of Ottawa-led research team has made significant progress in understanding XLP-2, a genetic disorder that affects the immune system. The study reveals two underlying mechanisms: poor expression of Interleukin-6 and compromised T cell survival, which lead to immunodeficiency in patients.