A universal infant vaccination campaign in China has led to a doubling of Hepatitis B virus (HBV) mutations, which may enable the virus to evade the vaccine. The mutations have risen from 6.5% in 1992 to nearly 15% in 2005, necessitating new vaccination strategies.
The study reveals that JC polyomavirus uses specific serotonin receptors to gain entry into cells, contrary to initial hypotheses. This discovery could lead to improved treatment options for patients with PML by informing how existing drugs work.
A new study published in the American Journal of Pathology found that resveratrol actually worsened MS-like neuropathology and inflammation in mice. Resveratrol did not show anti-inflammatory or neuroprotective effects, contradicting previous claims about its benefits.
The study identifies syndecan-1 as the human cell receptor used by baculovirus to enter cells, shedding light on the mechanisms of infection and facilitating gene therapy development. This breakthrough discovery increases our understanding of baculovirus interactions with human cells.
Researchers found a novel hepatitis virus that was mistakenly believed to be a genuine disease-causing agent. The team used next-generation DNA sequencing and data mining to track down the true source of the contamination, which was traced back to tiny oceanic algae called diatoms.
Scientists at Fred Hutchinson Cancer Center have uncovered a new mechanism by which influenza viruses infect cells, utilizing the protein neuraminidase instead of hemagglutinin. This discovery may have implications for developing immunity against the flu and could lead to new treatments.
Researchers at NYU College of Dentistry have discovered a new way HIV-1 reproduces itself without integrating its genetic material into cell DNA, allowing the virus to persist in vivo and evade antiviral drugs. This finding may lead to the development of new treatments aimed at eliminating the virus from infected individuals.
A novel vaccine approach against human cytomegalovirus (CMV) has been shown to be safe and more effective than previous vaccines in an animal model. The vaccine targets CMV's ability to hijack the immune system, inducing broader immunological protection.
Researchers found that apoptosis can reactivate latent herpesviruses in dying cells, which could have significant clinical implications. This discovery highlights the potential for cytotoxic cancer chemotherapies to activate dormant viruses, raising questions about the use of antiviral medications in treatment.
Researchers at the University of Minnesota Academic Health Center have developed a new delivery system for a combination of two FDA-approved drugs that may serve as an effective treatment for HIV. The discovery allows for a pill-form combination of decitabine and gemcitabine, marking a major step forward in patient feasibility.
Researchers at Children's National Hospital discovered that apoptosis activates an 'escape' replication process in human herpesviruses, potentially leading to disease reactivation. This process may be triggered by chemotherapy agents, suggesting the need for antiviral treatment during such procedures.
Researchers at Ohio State University Comprehensive Cancer Center discovered that the tumor-suppressor gene A20 is silenced due to the loss of microRNA-29, leading to increased levels of NF-kB and tumor progression. This finding could guide the development of more effective therapies for soft-tissue sarcomas.
A large-scale analysis reveals many common cancers are not associated with DNA viruses, contradicting earlier estimates. The study highlights the importance of bioinformatics in understanding virus integration into cancer subtypes.
Research suggests that inherited Human Herpesvirus 6 may be a root cause of CFS, causing cognitive dysfunction and fatigue. Antiviral drug therapy improves severe neurological symptoms in affected patients.
Researchers developed a monoclonal antibody effective against human norovirus, which can prevent infection in susceptible host cells. The study aims to explore the antibody as both treatment and disease prevention strategy for outbreaks, particularly among vulnerable populations like healthcare workers and travelers.
Researchers have found a virus in South African bats that is genetically more closely related to MERS-CoV than any other known virus. This discovery suggests that African bats may play a role in the evolution of MERS-CoV predecessor viruses, potentially leading to human infection through intermediate hosts such as camels.
The article reviews the epidemiology, characteristics, and prevention of West Nile virus, which has produced the largest arboviral neuroinvasive disease outbreaks in the US. The authors highlight the importance of sustainable community-based surveillance and vector management programs.
Researchers have characterised new sequences of endogenous retroviruses in polar bears and pandas, dating back 45 million years. The viruses are suspected to play a role in human diseases such as cancer and neurodegenerative disorders.
Researchers found that 'virus-negative' genital warts can harbor small amounts of more distantly related viruses that escaped previous detection. The study identified 23 new types of HPV and two known sequences, highlighting the diverse pool of previously unknown HPV types infecting humans.
Researchers identified thousands of species, including bacteria, fungi, and archaea, through DNA and RNA sequencing. The findings suggest the lake once connected to the ocean, with marine and freshwater species present.
Researchers developed a novel DNAzyme-gold nanoparticle test to detect dengue virus in mosquitoes, detecting as little as 10 viruses per sample. The assay is stable at high temperatures and can be easily transported and used in remote regions.
Researchers have shown that interleukin-22 reduces lung inflammation during influenza A virus infection and protects against secondary bacterial infection. The study suggests that interleukin-22 may play an important role in maintaining epithelial integrity, providing a potential benefit for patients with flu.
Researchers have developed a new agent that targets the NS5B replicase protein, disabling HCV replication and evading resistance. The aptamers inhibited diverse genotypes of HCV without causing toxicity or immune response.
Scientists at Emory Vaccine Center found that IL-21 is necessary for long-lasting antibody responses in mice against viral infections. The molecule stimulates germinal centers and supports T helper cells, leading to the generation of virus-specific long-lived plasma cells.
Researchers found that giant viruses share genes with tiny virophages and transposable elements, suggesting they evolved from each other on multiple occasions. The study's complex network of evolutionary relationships challenges previous understanding of viral evolution.
A new computational technique allows predicting infectious avian influenza strains based on protein sequences and physicochemical characteristics. The 'A2H' system has successfully validated its predictions against known strains of bird flu and those that are infectious to people.
A large-scale study of mosquitoes in Kenya found a diverse range of arboviruses, including West Nile, Ndumu, and Ngari viruses. Over 450,000 mosquitoes were screened, revealing previously unknown viruses with similarities to the Chaoyang virus in China.
Researchers analyzed data from the RV144 HIV vaccine trial, which showed a 31% protection rate. They found that specific antibodies may interfere with the protective effects of other antibodies, reducing the vaccine's efficacy. This discovery can inform future vaccine development strategies to overcome these limitations.
Scientists at UTMB discovered that Ebola short-circuits the immune system using proteins that shut down cellular signaling related to interferon, preventing dendritic cell maturation and generating an ineffective adaptive immune response. The researchers found that specific regions of two different proteins are crucial for this mechanism.
A big data analysis identified 37 RNA molecules that may predict survival in breast cancer patients with the most common form of invasive ductal carcinoma. The study found a concise RNA signature associated with patient outcome, including early-stage tumors and those with clinical and molecular subclasses.
Researchers have discovered a virus that can selectively infect and kill human melanoma cells, leaving normal cells unharmed. This breakthrough offers new hope for treating the deadliest form of skin cancer, which has seen a tripling of incidence over three decades.
Scientists can now better study human disease using induced pluripotent stem cells (IPS), which can generate any cell type. This technology reduces the risk of organ/tissue rejection in cell transplants and allows for the correction of mutations in IPS cells.
Researchers found high numbers of HPV type 53 in normal cervical smears from HIV positive women, but not in cervical cancers. This sub-type may inhibit progression to cervical cancer, potentially providing a simple biological therapy for prevention.
Researchers at Virginia Tech have identified a genetically engineered Newcastle disease virus as a potential treatment for prostate cancer. The virus efficiently kills prostate cancer cells, including those resistant to hormone treatments and chemotherapy, while sparing normal human cells.
Researchers at the University of North Carolina discovered that hepatitis A virus acquires an envelope from infected cells when found in the environment, blurring the distinction between enveloped and non-enveloped viruses. This unique behavior allows the virus to evade host immune systems and survive longer periods between hosts.
The NIH team developed a nonhuman primate model in December 2012 to study the emerging coronavirus. Clinical signs of the disease appear within 24 hours of infection, including reduced appetite and respiratory issues. The model is helping scientists evaluate potential vaccines and treatments.
A new vaccine has proven highly effective against the H5N1 avian influenza virus, when tested in mice and ferrets. The vaccine uses an attenuated version of the H9 virus with an added H5 gene, slowing viral replication and reducing the risk of successful reassortment.
A single mutation in H5N1 avian influenza virus makes it more infective in mammals, while reducing its ability to infect ducks. The study's findings provide new insights into viral determinants of influenza virus virulence and suggest a lower pH optimum for hemagglutinin activation favors mammalian infection.
A modified Newcastle disease virus has been developed to target prostate cancer cells without harming normal cells, offering a new treatment option for hormone-refractory patients. This oncolytic virus uses a retargeted design to minimize off-target losses and reduce the amount of virus needed for treatment.
Dr. John DeVincenzo's research at Le Bonheur Children's Hospital is advancing our understanding of RSV replication, mutation, and treatment options. His lab has developed new techniques to detect minute sub-populations of viruses and assessed the effectiveness of RNA interference-based antiviral therapies.
A team at Vienna University of Veterinary Medicine found the same strain of Usutu virus in dead blackbirds in Italy in 1996 as in Austria's cases. This suggests the virus was present in Italy before reaching Europe, and forensic pathology can help unravel origins of emerging diseases.
A study found that moderate gum disease exacerbated infection and inflammation in a monkey model of AIDS, potentially slowing treatment effects. Researchers emphasize the importance of controlling mild mouth inflammation due to its negative implications on long-term disease progression.
A genetically reprogrammed Herpes simplex virus has been engineered to target and kill cancer cells expressing the HER-2 oncogene, specifically breast and ovarian cancer metastases. This breakthrough oncolytic herpesvirus has shown promising results in treating experimental metastasis, holding promise for a novel type of cancer treatment.
Scientists at the University of Missouri are working on a $3.4 million NIH project to create next-generation antiviral therapies by targeting the elusive HIV enzyme RNase H. The goal is to be ready for evolving resistant strains before they emerge, offering new treatment options.
A new study reveals that viruses can be spread through cross-contamination from utensils like knives and graters, posing a significant health risk. The study found that contaminated utensils can transfer viruses to multiple pieces of produce, highlighting the need for emphasis on utensil hygiene.
Researchers discovered a ribosomal protein, rpL40, that regulates viral protein synthesis and could represent a target for antiviral treatments. This finding reveals the ribosome's active role in regulating protein translation and offers new insights into combating fatal viral infections such as rabies.
A genetically-engineered vaccine aims to prevent HIV infection by continually producing disease-fighting cells. The new approach could provide long-term protection and potentially be adapted for use against other infections.
Scientists have discovered a new method for identifying genes in animals, which could increase genetic information by 70-80%. This technique allows for direct observation of genes and proteins, enabling more efficient study of animal diseases and viruses.
Researchers discovered that wild birds were previously exposed to the West Nile virus before their arrival in Greece during autumn migration. The study found 14 positive serum samples from birds up to 8 months prior to the human outbreak, and genetic determinants of increased virulence were present in these samples.
Researchers found that viruses work together to break down plant defenses, causing more severe disease. This phenomenon has important implications for controlling these viruses.
Renowned immunologist Dan R. Littman, MD, PhD, has been elected a member of the Institute of Medicine for his seminal contributions to immune recognition, HIV pathogenesis, and commensal bacteria in immune system development. His work has major impact in both immunology and virology.
Global experts weigh in on the H5N1 moratorium, discussing biosafety concerns, dual-use research of concern, and the importance of lifting the ban. Public health experts assess the probability of accidental release from laboratories with advanced security.
The University of Michigan has been awarded a $21 million grant from the National Institutes of Health to establish the Center for HIV RNA Studies, which aims to better understand the HIV virus on a molecular level. Researchers hope that this breakthrough could lead to innovative treatment approaches for AIDS and other diseases.
A study published in the Journal of Clinical Virology found that exposure to school-age children raises the odds that a person with lung disease will suffer symptoms from a cold. The study analyzed 1,000 samples of bodily fluids and found that people whose infections turned symptomatic were twice as likely to have contact with school-a...
Researchers discovered that a protein called SAMHD1 protects resting T helper cells from HIV replication by degrading genetic information. The study provides new insights into the immunodeficiency syndrome AIDS and could lead to new treatments for HIV.
A team of researchers has identified a possible key to slowing the progression towards AIDS by uncovering an early immune response that targets a specific section of the HIV protein. This novel finding could lead to new insights into vaccine design and may provide hope for better treatment options for those living with HIV.
Researchers found that taking Truvada daily leads to a 99% reduction in HIV infection risk and that participants need to take the medication at least 4 days per week to achieve a 90% risk reduction. The study focused on men who have sex with men, as the findings may not be applicable to other populations.
A new cell screening method has identified two novel compounds with anti-influenza activity, obatoclax and gemcitabine. These compounds show promise as next-generation antiviral drugs that can target host functions rather than viral proteins. Further research is needed to confirm their efficacy in treating influenza infections.
Mario Santiago has been awarded the ICAAC Young Investigator Award for his work on HIV research, particularly in understanding retroviral resistance genes and their mechanisms of action. His research has contributed significantly to the development of new approaches to HIV vaccine development.
Lawrence Corey, a renowned expert in virology and immunology, has been honored with the Cubist-ICAAC Award for his pioneering work on herpes viruses, HIV, and cancer. His research has led to significant advances in antiviral therapy and vaccine development.