Articles tagged with Viral Infections
A new study found that a combination of peginterferon alfa-2a and ribavirin can offer superior efficacy without increasing common side effects, particularly in patients infected with hepatitis C genotype 1. The treatment approach showed a higher sustained response rate compared to standard therapy.
Researchers have discovered a new viral structure that suggests a continuum in the evolution of viruses, revealing similarities between PRD1 and human adenoviruses. The findings provide insights into the evolutionary path taken by families of viruses and may lead to the development of new therapies for certain infections.
A study by Dr. G. Paolo Dotto and colleagues found that decreased Notch1 expression enables the increased expression of HPV viral proteins E6 and E7, promoting malignant cell transformation.
A U.Va. study is investigating the effectiveness of echinacea in treating colds by standardizing extracts from the plant. The researchers plan to recruit approximately 450 subjects and administer three different concentrations of echinacea constitutents to test their impact on viral replication and inflammatory responses.
Researchers have pinpointed the cause of hepatitis A virulence by identifying two key genes, 2C and VP1/2A. The discovery may lead to the development of a live, attenuated HAV vaccine that could be more effective and affordable for widespread use.
The American Association of Clinical Chemistry presents an update on HCV testing, highlighting the importance of laboratory tests for diagnosis and monitoring treatment efficacy. New testing methods, including core antigen and genotype testing, are being developed to assist clinicians in diagnosing HCV infection.
A study of over 1,000 passengers flying between San Francisco and Denver found that recirculated cabin air did not cause more colds than fresh air. The researchers suggest that being on a plane packed with people may be the primary factor in transmission of colds.
Researchers found that viral infections in infancy can cause long-term changes in the body's anti-viral system, leading to chronic respiratory inflammation and distress. Mice infected with paramyxoviral virus developed airway hyperreactivity and mucus-producing cells, symptoms similar to asthma.
The new treatment combines antiviral and anti-inflammatory drugs to target the root cause of cold symptoms, not just its symptoms. Researchers found that adding interferon to the treatment increased effectiveness compared to individual medications alone.
The MAP kinase pathway is activated in response to coxsackievirus infection, leading to increased viral replication. This signaling cascade also triggers host cell responses, including inflammation and immune activation.
A study found that RSV prevention in premature infants during their first winter of life can lead to better lung function and fewer respiratory issues. The treatment reduced the risk of RSV infections by 85%, resulting in fewer colds, asthma attacks, and allergies.
A study found that influenza A infection attracts pneumonia bacteria, increasing binding to lung epithelial cells. Treatment with Tamiflu may prevent this increased binding and related complications.
Researchers at UCR discovered that animal cells use RNA silencing to protect themselves from viral infections, a mechanism also found in plants. This breakthrough could lead to new gene therapies and vaccine designs for treating recalcitrant human and animal viral diseases.
The VIRAHEP-C clinical trial investigates the effectiveness of combination therapy for chronic hepatitis C, with a focus on racial disparities. Researchers hope to determine factors associated with sustained virological response rates in African-American patients, who are disproportionately affected by the disease.
A recent study published in the Pediatric Academic Societies found that low-grade cervical lesions (LSILs) tend to clear up on their own in adolescent women. The study of 187 adolescents aged 13-22 years showed that only 4% had persistent LSILs after three years, and most regressed within three months.
Researchers develop mouse model of sporadic and familial human meningioma, demonstrating NF2 loss is sufficient for tumor formation. The study provides novel insight into the role of the NF2 gene in meningioma development and enables testing of potential therapies.
A recent study found that people previously infected with HCV are 12 times less likely to develop persistent infection than those infected for the first time. This suggests that immunity can be acquired to protect against viral persistence, making vaccines a potential solution to reduce medical consequences of HCV infection.
Researchers discovered two mechanisms by which adenoviruses establish persistent infections: interfering with apoptosis signaling and preventing apoptosis through the Receptor Internalization and Degradation complex. This knowledge could improve the usefulness of adenovirus vectors in gene therapy.
A Baylor College of Medicine study found that Helicobacter pylori infection is most common among children under 10, with an estimated 24.5% infected by age 18-23. The average age of first infection was 7.5 years, and over 84% of infected children remained infected during adolescence and young adulthood.
Recent studies confirm presence of SV40 DNA in human lymphoma samples, suggesting possible vaccine-related transmission. The findings have significant implications for understanding cancer development and prevention.
Researchers at Immerge BioTherapeutics have identified miniature swine that do not transmit the pig retrovirus (PERV) to humans. The study characterizes three sub-classes of PERV A, B and C found in the herd of inbred miniature swine, showing consistent non-transmitting phenotypes.
Scientists have identified specific cells called dendritic cells that produce massive quantities of interferon quickly after a virus appears, providing a rapid response to infections. This discovery may lead to new medical applications for interferon and shed light on the body's innate immune response.
Researchers at Oregon State University have identified a new type of virus in an aborted calf, which is part of the calicivirus family that can infect various species. The discovery raises concerns about the potential spread of disease among livestock and its impact on public health.
Researchers at the University of Maryland Biotechnology Institute have identified specific amino acid residues in the Gumboro-causing viruses responsible for their infection and disease development in poultry. This discovery will enable the creation of more effective genetically engineered vaccines to protect against severe outbreaks.
A NASA-funded study utilizes satellite data on temperature and vegetation to forecast West Nile Virus transmission and identify high-risk areas. The analysis reveals that mosquito populations thrive in warmer, wetter conditions, allowing researchers to pinpoint disease hotspots and make predictions about future outbreaks.
A longitudinal study of 1791 Brazilian women found that persistent HPV infections increased the risk of squamous intraepithelial lesions (SIL) by 10.2 times compared to those without infection. Women with persistent type 16 or 18 HPV infections had a strong correlation with SIL incidence.
A study of 250 primary-care patients found that infections like glandular fever can trigger chronic fatigue syndrome (CFS), while mood disorders are predicted by factors such as psychiatric history and social adversity. Early physical activity may help prevent or treat CFS after infectious mononucleosis.
Researchers have found a new, hidden piece of the influenza virus that may kill immune system cells. This protein was discovered by accident while studying
Researchers have developed a new method for studying viral entry, which reveals that key steps occur much faster than previously believed. The study found that viruses can penetrate cells within minutes, using the cell's own transportation system to reach the nucleus.
Research found that over 34% of ventilated patients are sexually active, with better lung function and younger age being key factors. Meanwhile, a study in Ethiopia linked home kerosene use to increased allergy risk, while another study showed nearly 40% of COPD exacerbations are caused by respiratory viruses.
Researchers found a virus similar to HEV in rats in Los Angeles, which may contribute to the high rates of HEV antibodies in some inner city areas. The study suggests that infected rats could be a source of exposure for humans and highlights the need for further testing.
Yale scientists have successfully immunized mice against West Nile virus, providing a promising lead for developing a vaccine for humans. The vaccine was developed using a protein found in the virus and showed complete protection against the disease.
Researchers find that hormonal manipulation has no effect on virus responses in female rodents, suggesting genetic differences may be involved. In contrast, castrated male rats exhibit female-type responses to hantavirus infection.
Researchers found that prion diseases adapt slowly to new species through a prolonged process, making early detection difficult. The study also showed that the disease can spread rapidly in new hosts under specific conditions.
A study published in JAMA found that the misdiagnosis rate for appendicitis remained high despite the availability of new diagnostic tests, particularly among young women and older men. The researchers analyzed data from 85,790 appendectomies performed in Washington state between 1987 and 1998 and found that the rate of misdiagnosis in...
The newly detailed structure of PRD1 reveals striking similarities with human adenoviruses, suggesting a conserved icosahedral shape used by viruses across species. This knowledge may inform the development of novel antibiotic strategies against antibiotic-resistant bacteria.
A new combination drug treatment has shown to be more effective in treating chronic hepatitis C than the current standard. The treatment, peginterferon alfa-2b plus ribavirin, achieved higher sustained viral response rates compared to interferon alfa-2b plus ribavirin, especially in patients with genotype 1 infection.
A small genetic change in the PB2 gene makes influenza viruses more potent, warns of potential dangers of new strains. Research helps develop strategies for detecting future outbreaks and prepares for pandemics.
Researchers create antibody Fab D18, which blocks prion propagation and clears infectious prions from cell cultures. This breakthrough provides a potential therapeutic target for a human drug to cure established infection.
Vancouver is facing a high risk of an hepatitis A outbreak due to past infections among street youth, injection drug users, and men who have sex with men. The Canadian Medical Association Journal report highlights the need for vaccination programs to protect these groups.
Researchers have developed a mouse model that can be infected with the hepatitis C virus, allowing them to test new therapies and study viral replication. This breakthrough could lead to the development of a cure for the disease, which affects an estimated 175 million people worldwide.
Myocarditis is an inflammatory condition that can trigger an autoimmune response, leading to heart failure. Researchers have identified complement and its receptors as key players in this process, shedding light on potential therapeutic approaches for treatment of human autoimmune diseases.
Researchers found that the New York City outbreak of West Nile virus in 1999 may have had up to 13,000 infections, including 1,700 febrile cases. Older adults and those without mosquito repellent were at higher risk for severe illness.
Researchers developed a mathematical model that suggests barring domestic animals from bedrooms can significantly reduce Chagas disease transmission. By analyzing household dynamics, they found keeping dogs in bedrooms is the worst thing for households, while excluding infected dogs from sleeping areas virtually eliminates transmission.
CSIRO scientists have discovered a long line of viruses emerging from the Hendra virus family, including 15 new paramyxoviruses in animal hosts worldwide. The Australian Animal Health Laboratory holds a collection of all major newly discovered paramyxoviruses.
Scientists at Johns Hopkins Bloomberg School of Public Health have identified a protein that clears viruses from neurons in the spinal cord and brain stem but not those in the cerebral cortex. The study suggests that different combinations of antibody and T-cell immunity may be needed to control infection and recovery from encephalitis.
A UK study found that one in five patients with acute symptoms of a sexually transmitted infection are unlikely to be seen at a genitourinary medicine clinic within the recommended 48 hours. The study, which surveyed healthcare staff posing as patients, also revealed that those in certain regions faced even longer waits.
Researchers propose a new model of asthma that suggests epithelial cells play a crucial role in the development of the disease. They found that IL-12 p40 production is increased in airway epithelial cells during inflammation and is overactive in people with asthma.
A new study sequenced the gene of a deadly type of Escherichia coli, revealing that it frequently picks up new DNA from other bacteria and viral genes. These newly acquired genes may contribute to the organism's virulence and make infections difficult to treat.
A study by The Wistar Institute suggests that infections can trigger autoimmunity through a normal but rare process involving memory B cells. A transgenic mouse with a self-similar influenza gene led to an autoimmune response, showing that the immune system may not eliminate all self-reactive cells.
In mice lacking b7 integrins, B cell-mediated secretion of antiviral IgA is lacking, and CD8+ T cells reach the intestinal epithelium in smaller numbers. Despite this, these cells are sufficient to clear rotavirus efficiently from the gut.
A team of researchers at NIH has developed a novel vaccine that prevents Ebola virus infection in monkeys, offering a promising new approach to protecting humans. The vaccine induces strong anti-Ebola immune responses and protects against lethal doses of the virus.
A study found that a genetic variant of the IL-8 gene is carried by over half of the UK population and increases the risk of developing severe bronchiolitis in children. The research suggests a possible genetic basis for the common childhood infection, which affects nearly all children by their second year.
Researchers at the University of Iowa have discovered that perforin and interferon gamma regulate the initial immune response and residual protective immunity. These molecules control T cell generation, survival, and differentiation, allowing for a precise balance between responding to pathogens and exhausting the immune system.
Researchers at UCLA have discovered a new treatment that can reverse heart damage in children with acute myocarditis, an infection of the heart. The study used OKT3, an immunosuppressive treatment, to suppress the immune response and improve heart function in five critically ill children.
Researchers have created nanodecoy cells that can bind to viruses with sialic acid receptors, preventing them from infecting actual cells. This decoy approach could be used as a drug or on mucosal surfaces to defend against biological warfare agents, and has shown promising results in laboratory testing.
Two unique cases of West Nile virus infection reported in Neurology, showing deceptive symptoms initially misdiagnosed as Guillain-Barré Syndrome. Both patients eventually fully recovered, but highlight the need for greater awareness and testing for the mosquito-borne virus.
Researchers from the University of Florida College of Medicine have developed a new therapy using bacteriophages to treat Vibrio vulnificus infections. Most mice injected with both the bacterium and a deadly bacteriophage survived what would normally be a fatal infection, demonstrating the effectiveness of this approach.
A study found that faucet handles and phone receivers are high-risk areas for transferring bacteria and viruses to hands and faces. This could lead to diseases like diarrhea and infection if proper hygiene is not practiced. The researchers also highlighted the potential for household items like sponges and telephones to spread infections.
A study of rural teenagers found lower asthma rates among farm-raised teens, while respiratory syncytial virus (RSV) bronchiolitis in infancy strongly correlates with later development of asthma and other breathing issues. Asthma experts emphasize the need for tailored management strategies addressing different stages of the disease.