Articles tagged with Viral Infections
The rat vector hypothesis suggests that rats may have spread SARS in the Amoy Gardens apartment block. Epidemiological case-control studies could be undertaken to identify behavioural risk factors and possible mechanisms for rat-to-man infections. This hypothesis is a strong possibility that needs to be further explored.
A study in Japan found that consuming raw Japanese deer meat may transmit Hepatitis E virus (HEV), a rare liver disease. The infected deer meat tested positive for HEV RNA, suggesting an animal route of transmission. This discovery adds the Sika deer to the list of foods with a risk of transmitting HEV.
A recent CDC study reveals that elderly individuals are at a higher risk of severe complications from dengue infection, including hospitalization and hemorrhagic fever. Clinicians must conduct thorough clinical examinations to avoid delayed diagnosis and treatment, which can lead to further complications.
A novel coronavirus has been confirmed as the primary causal agent of SARS, according to a study. The virus was found to infect the lower respiratory tract, leading to severe lung damage and disease symptoms. The discovery was made through laboratory studies of patients and experimental infections in macaques.
Researchers discovered Trif, a critical transducer protein in the innate immune system, which mediates signals from both bacterial and viral infections. The protein's role sparks inflammation, making it an attractive target for drugs designed to combat runaway inflammation characteristic of infectious diseases.
New lab results show no recombination of porcine and human retroviruses, reducing the risk of PERV transmission to humans. This finding supports Immerge's progress toward clinical xenotransplantation research.
Researchers found that the ThinPrep Pap test was more likely to detect abnormal cervical cells in women taking oral contraceptives than those not on birth control. In reality, most healthy cells looked like HPV-infected cells due to changes caused by the testing method, highlighting the need for further analysis and potential re-testing.
A study of 23 West Nile patients reveals early symptoms include rash, low back pain, and limb pain, progressing to muscle weakness and respiratory failure in severe cases. The disease can cause significant disability and death if left untreated, emphasizing the importance of early diagnosis and treatment.
Researchers found that fibroleukin is a prothrombinase that contributes to the development of thrombosis in viral hepatitis. The study suggests a potential link between fibroleukin and the progression of viral hepatitis, highlighting the importance of further investigation into this area.
A study published in JCI finds that PlGF-1 prevents oxygen-induced retinal vascular degeneration in retinopathy of prematurity, suggesting a potential therapeutic agent for the condition. Additionally, researchers identify Fgl2/fibroleukin as a critical prothrombinase involved in the pathophysiology of viral hepatitis.
Research found that alcohol consumption increases hepatitis C virus replication by upregulating nuclear factor kappa B, a key cellular regulator of immune pathways. Alcohol also inhibits the anti-HCV effect of interferon-alpha therapy. Treatment with naltrexone abolishes alcohol actions.
A new study found that alcohol consumption increases the activity of a protein that causes the hepatitis C virus to replicate, leading to liver disease. The study also discovered that alcohol interferes with antiviral treatment, such as interferon-alpha, which is currently the only licensed treatment for the infection.
A new study reveals the global spread of a virulent dengue virus strain responsible for severe disease outbreaks in Latin America and Africa. The research uses viral genetics to demonstrate the virus's movement from Asia and Africa to the Americas, shedding light on its emergence and transmission.
The NIAID is distributing the GeneChip SARS Array at no cost to qualified researchers worldwide, providing a powerful tool to better understand the SARS coronavirus and its spread. The array will help scientists achieve objectives such as constructing a family tree of SARS coronaviruses and tracing the virus's evolution.
Sandra McLachlan and her team reveal that cleavage of the TSHR A subunit can induce or amplify the immune response to the TSHR, resulting in autoantibodies that stimulate thyroid hormones. This finding increases understanding of why autoantibodies arise specifically to the TSHR, leading to Graves hyperthyroidism.
Researchers at Frankfurt University Medical School have assessed the antiviral potential of five drugs against the SARS coronavirus. Glycyrrhizin, an antiviral agent proven to treat HIV-1 and hepatitis C, is the most active compound in inhibiting replication, with increased nitric oxide synthesis contributing to its effectiveness.
Researchers analyzed data from the World Health Organization and found that countries with quicker control measures had lower fatality rates and slower epidemics. The study suggests that better control measures, such as rapid hospitalization and isolation of cases, are more effective than differences in infectivity or virulence.
Researchers at UT Southwestern Medical Center have partially uncovered the stages in the elimination of viral infections and cancer cells by the human immune system. The study found that natural killer cells and cytotoxic T cells use different mechanisms to kill target cells, with significant differences in their roles and receptor usage.
Researchers have developed a new lentiviral vaccine that can induce robust immune responses in mice, offering a promising candidate for cancer therapy. Additionally, studies suggest that newborns may have a mature and functional immune response to infections, raising questions about neonatal vaccination strategies.
A recent study suggests that a commonly used drug to prevent Epstein-Barr Virus (EBV)-associated tumors in child liver transplant patients may not be effective. The trial, which enrolled nearly 90 children, found no statistically significant difference between those who received the active drug and those who received a placebo.
A novel flu vaccine developed by The Wistar Institute has generated a strong antibody response in mice, offering hope for a more stable and effective vaccine. The vaccine targets a stable region of the virus, potentially providing long-term protection against flu strains.
Immerge BioTherapeutics has identified the PERV receptor, a key factor in understanding the safety of xenotransplantation. This breakthrough allows for the development of safer porcine organs for human transplantation, addressing an unmet need in clinical transplantation.
Researchers used data on recent SARS cases to project how the epidemic will proceed under various circumstances. They found that careful interventions, such as reducing contacts and improving treatment, can control the spread of the virus.
Researchers propose pathogenic bacteria and viruses could originate from outer space, citing the unusual nature of major epidemics like SARS. The novel virus in SARS has been identified as a possible explanation for its unexpected appearance and global spread.
Researchers found green tea extract from tea bags is more effective than loose tea against human pathogenic viruses. Caffeinated green and black teas also outperform decaffeinated versions as anti-viral agents.
Researchers discovered that 29% of individuals were completely resistant to the Norwalk virus, with those lacking the FUT2 gene showing no signs of infection. The study suggests that vaccination may be effective in reducing disease burden and offers new hope for developing vaccines.
Researchers have identified two distinct genotypes of the SARS virus, linked to geographic clusters of infections. The study provides valuable insights into the genetic makeup of the virus, which could inform public health strategies and vaccine development.
A modified adenovirus, Delta-24-RGD, has shown improved infectivity and replication efficiency compared to the unmodified Delta-24. This leads to increased cytopathic effects and prolonged survival rates in mouse models of human glioma. The authors conclude that Delta-24-RGD may be an effective agent in treating gliomas.
Scientists at University of Maryland Biotechnology Institute developed a new vaccine using recombinant DNA technology to protect fish against infectious pancreatic necrosis virus. The vaccine, composed of hollow virus-like particles, demonstrates a resistance potential against the disease and has shown promising results in experiments.
Researchers identify viral protease NS3/4A as a key player in evading the immune system, leading to new avenues for clinical and basic research on hepatitis C. Inhibiting this protease restores the host's immune response, reducing viral levels to nearly undetectable levels.
A 2002 conjunctivitis outbreak at Dartmouth College revealed bacterial pinkeye caused by a strain of Streptococcus pneumoniae lacking protective capsule. Effective collaboration between doctors, health officials, and the CDC helped contain the outbreak through rapid communication and basic hygiene measures.
Researchers at St. Jude Children's Research Hospital found that an anti-flu-virus drug can protect against pneumonia by blocking the activity of flu virus enzyme neuraminidase. This protection reduces illness and incidence of death from subsequent infection by Streptococcus pneumoniae bacteria.
Researchers discovered that normal nerve cells can use IRES to produce large quantities of protein, mimicking viral behavior. This switch allows for massive production of specific proteins like ELH hormone, potentially impacting learning and memory processes in the brain.
Researchers found that B cells and antibodies are essential for controlling the infection in mice. Without them, even low doses of the virus can be deadly. The study's findings may explain why elderly people and those with weakened immunity are more likely to develop serious disease.
Research finds that forest fragmentation leads to increased blacklegged tick populations, particularly in areas with small forest fragments. This could lead to a higher risk of Lyme disease for people living nearby, as these ticks are the primary carriers of the bacteria.
Researchers uncover molecular signal critical for selective recruitment of viral RNA segments to form complete flu genome. This discovery may help develop new vaccines and antiviral drugs targeting the genetic trick used by the flu virus.
Researchers found that the absence of the SAP gene impairs the immune system's ability to recognize and react to infection, leading to impaired long-term antibody responses. The study has implications for vaccine development and may offer therapeutic benefits in treating X-linked lymphoproliferative disease.
The University of Washington has established a $9 million center to study the underlying causes of hepatitis-induced liver disease. The center brings together experts in viral hepatitis, liver disease, and transplantation to investigate gene and protein expression in liver cells.
Researchers found that a virus uses a protein called actin to destroy its own cells, allowing it to escape and infect other cells. The discovery provides new insights into viral infections and could lead to the development of antiviral agents.
NASA's Public Health Applications Program aims to provide public health agencies with innovative technologies, data, and satellite-based tools to combat the disease. The program helps identify environmental indicators, predicts disease outbreaks, and informs mosquito surveillance efforts.
A UC Berkeley study analyzed 27 clinical trials and found that combining Chinese herbal treatments with interferon alfa was 1.5-2 times more effective in reducing viral load than using interferon alfa alone. The most promising results came from patients using a combination of bufotoxin and kurorinone with interferon alfa.
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.