Articles tagged with Viral Infections
A recent study by Indiana University School of Medicine found that nearly all sexually active adolescent females aged 14-17 were infected with the human papillomavirus. The researchers also discovered that many of these participants had multiple HPV types, which are associated with an increased risk for cervical cancer.
A recent study explores the issue of antibiotic misuse, finding that more than half of patients in the US are taking unnecessary antibiotics for colds and flu. The study aims to educate providers and patients on proper use of antibiotics, highlighting the risks of antibiotic-resistant bacteria.
Research suggests a common viral lineage among viruses infecting hosts from all three domains of life, based on structural similarities in their coats. The study found that these similarities may point to sites of enzymatic activity that could be targeted with anti-viral drugs.
Researchers have successfully grown the mouse norovirus MNV-1 in cells from mice with defective immune systems. This breakthrough enables scientists to study the virus and may lead to the development of a vaccine target, as it has already revealed an essential part of the capsid protein crucial for disease-causing ability.
Researchers have found that certain antipsychotic drugs can prevent brain cells from becoming infected with the JC virus, which causes PML. The discovery opens up new avenues for therapy and may lead to effective treatments or prevention methods.
Scientists found that myostatin, a protein limiting muscle growth, is overproduced during PRRSV infection, resulting in reduced skeletal muscle growth and weight gain. This could be a substantial cost for pig producers.
Jefferson scientists discovered that certain parts of the silver-haired bat rabies virus, specifically its glycoprotein cover, enable it to infect the brain rapidly. The researchers found that this type of rabies is capable of evading the immune system more effectively than other strains, making it a key factor in viral pathogenesis.
A recent study published in Hepatology found that occult HBV infection is prevalent in adult hemodialysis patients, with a rate four to five times higher than standard HBsAg testing. The majority of infections were associated with low viral loads and the sG145R-mutant.
The SARS outbreak highlighted the importance of preparedness and response in hospitals. Quarantine strategies proved ineffective as most cases were acquired in hospital settings. In contrast, Taiwan successfully replaced quarantine with better preparedness for future pandemics.
A team of researchers has identified three genetic suppressors of RNA silencing in plants, which are crucial for combating citrus tristeza virus (CTV) infections. These viral suppressors can be targeted by genetically engineering virus-resistant citrus trees, offering a promising approach to disease control and reducing economic losses.
A study of nearly 400 African-American patients found that weight-based REBETOL dosing with PEG-INTRON improved viral clearance and reduced relapse rates compared to a flat dose. The treatment showed promise in improving outcomes for this patient population, which has historically had lower response rates to hepatitis C therapy.
Research in British Columbia found a seventeen-fold higher risk of diffuse large B-Cell lymphoma in HCV-infected patients. The study confirmed the viral-cancer link, previously suspected in studies from other regions with higher hepatitis C prevalence.
Researchers discover that adding a single gene from the 1918 virus to a benign strain of influenza can transform it into a highly virulent form. This finding supports the idea that the 1918 Spanish flu virus was inherently more dangerous and provides insight into its transmission among humans.
Research suggests that early life stress can alter the developing immune system, making it more vulnerable to diseases like multiple sclerosis. Infant mice subjected to maternal separation showed increased virus levels and impaired recovery from infection compared to non-separated mice.
Harvard University scientists have developed nanowire detectors that can identify single viruses using specific receptors, offering a highly sensitive solution for diagnostics and biosafety. The technology has the potential to detect viral infections at early stages and distinguish between different strains and variants.
Researchers at the Center for Internet Epidemiology and Defenses will measure and analyze live Internet epidemics to develop robust defense mechanisms. They plan to construct large-scale monitoring instruments to provide early warning of incipient outbreaks and craft practical solutions to counteract new outbreaks.
A population-based case-control study found no association between SV40 exposure and increased risk of NHL. SV40 seropositivity was detected in 7-10% of patients and less than 2% of controls, indicating a possible cross-reactivity with related human polyomaviruses.
A study of Japanese children with influenza treated with oseltamivir found nearly 20% produced mutant drug-resistant viruses within four days. The study highlights the risk of rapid emergence of resistant flu viruses, threatening a line of defense against deadly diseases.
Researchers at Purdue University have created a movie of the T4 virus infection process, revealing conformational changes in the baseplate that enable scientists to visualize the infection process. This improved understanding could lead to deeper insights into viral behavior and potential gene therapy techniques for human patients.
Eleven organ transplant recipients were hospitalized with West Nile virus encephalitis, developing neurological damage and some surviving despite significant problems. The study highlights the risk of WNV infection in immunosuppressed individuals receiving long-term immune system-suppressing drugs.
Researchers found that preschoolers exposed to common childhood infections are less likely to develop Hodgkin's lymphoma in adulthood. This contradicts previous studies linking high socioeconomic status and delayed infection with the Epstein-Barr virus to increased disease risk.
Scientists at UCSF created a large fragment of the normal prion protein, which they then folded into an abnormal shape to induce infection. The study demonstrates that misfolding a particular segment of the normal prion protein is sufficient to transform it into infectious prions. This finding provides new insights into spontaneous pri...
Researchers at NIH/National Institute on Aging created synthetic prions that caused neurological disease in mice, distinct from other strains of prions. The study sheds light on the conversion process leading to dementing diseases like Creutzfeldt-Jakob and Alzheimer's.
Neglected diseases, such as onchocerciasis and Chagas' disease, can be controlled with cost-effective interventions. Investing in these efforts could bring long-lasting benefits and reduce morbidity, particularly for children, if done efficiently from Global Fund resources.
A University of Toronto study found that West Nile virus encephalitis is a common neurological manifestation in hospitalized patients, often leading to severe neuromuscular dysfunction. The study's authors recommend electrodiagnostic testing for unexplained weakness and critically ill patients to rule out acute flaccid paralysis syndrome.
Researchers have discovered that Toll-like receptor 9 (TLR9) plays a crucial role in coordinating the immune response to viral infections. In this study, Dr. Marco Colonna and colleagues found that TLR9 recognizes viruses in immune cells and activates natural killer cell responses.
Researchers found that lung transplant patients who develop community-acquired respiratory viral infections are at twice the risk of developing bronchiolitis obliterans syndrome. Additionally, a study identified unique tumor signatures that can predict lung cancer death within 12 months with an accuracy rate of 87%.
The NIAID is conducting a clinical trial to test the safety and effectiveness of Omr-IgG-am, an antibody-based product derived from Israeli donors, in treating West Nile virus infection. The study aims to provide preliminary data on the treatment's effectiveness against encephalitis, a brain inflammation caused by WNV infection.
A call has been made to invest in preventing 'neglected diseases' such as onchocerciasis and Chagas' disease, which can be controlled or eliminated with proven interventions. Investing a fraction of the annual requirements of the Global Fund could bring long-lasting benefits for millions of people.
Researchers have identified a potential molecular target to halt the spread of human papillomavirus (HPV), a common cause of cervical cancer. By targeting specific RNA molecules that produce proteins driving cellular proliferation, HPV-infected cells may be eradicated, offering new treatment options.
A study found that HPV DNA is present in tumors of HNSCC patients, suggesting a role for the virus in early cancer development. The findings support the idea that HNSCCs can be subdivided into two genetically distinct categories, one driven by environmental factors and the other by HPV infection.
Researchers discovered a link between respiratory syncytial virus (RSV) and asthma in mice, showing that an anti-RSV antibody could decrease the risk of developing asthma. The study suggests that treatments against RSV may reduce asthma-related complications in children.
Researchers have developed an intranasal SARS vaccine that protects African green monkeys from infection with a single dose, delivering the vaccine directly into the respiratory tract. The vaccine targets the SARS spike protein and induces neutralizing antibodies against the virus.
Researchers have successfully developed a human SARS immunisation in animal studies, showing that monkeys vaccinated with the SARS vaccine had antibodies to the virus and no evidence of viral shedding. In contrast, control group monkeys without vaccination showed significant viral shedding after infection.
Researchers found that a harmless virus can mutate quickly and evade the immune system's defenses in mice with suppressed immunity. The study suggests that similar mutations may occur in humans with weakened immune systems, leading to severe disease.
Airborne viruses were detected in 32% of office building air filters, with higher carbon dioxide levels linked to increased exposure risk. Researchers also found that healthcare workers treating SARS patients were at high risk of developing the disease due to endotracheal intubation.
A study led by Duke University Medical Center researchers found African-Americans have a significantly lower response rate to treatment for chronic hepatitis C. Only 19% of African-American patients responded to the drug combination, while 52% of non-Hispanic white patients achieved a sustained virologic response.
A new study found that a single daily dose of Valcyte is equally effective as three times daily Cytovene in preventing CMV in kidney transplant patients. This simplified regimen may improve care and quality of life for transplant recipients by reducing medication complexity.
A study found that the overall prevalence of chlamydial infection was 4.19% among young adults aged 18-26, with higher rates among women, black Americans, and those in the south. Gonorrhea prevalence was also significant, with co-infection rates being low.
Researchers discovered that certain tobacco plant species are resistant to the cowpea mosaic virus. The virus spreads through a plant's vascular system, causing damage and death, but the specific channels it uses to transmit the virus were identified. This knowledge could lead to strategies for creating virus-resistant crops.
Dhanasekaran has received the Raymond W. Sarber Award for his research on avian pneumovirus and Newcastle disease virus, which could lead to the development of recombinant vaccines against these diseases. His work aims to improve health and economic well-being in humans and animals.
The US is likely to see an increase in West Nile virus cases in California this year, thanks to a combination of mosquito population, agricultural methods, and bird migration patterns. The state's diverse geography and climate will also contribute to the spread of the disease.
The NIAID-developed DNA vaccine significantly reduced SARS virus levels in infected mice, with antibodies alone responsible for the dramatic reduction. This breakthrough demonstrates the effectiveness of a novel vaccine approach against SARS, paving the way for future human clinical trials.
Researchers at University of Wisconsin-Madison have discovered a potent way to shut down viruses by introducing harmless molecules that mimic the virus's growth machinery, outperforming traditional antiviral strategies in inhibiting viral growth and creating drug-resistant strains.
A study suggests that viral infections like RSV can increase the expression of Toll-4 receptors on airway cells, leading to a heightened response to endotoxin exposure and potentially causing asthma exacerbations. This increased sensitivity could also make airways more responsive to other environmental exposures.
The article discusses the ongoing threat of rabies in Africa and Asia, where dog rabies epidemics hinder control efforts. Mary Warrell highlights the importance of addressing this issue through improved surveillance and vaccination methods.
UCSD School of Medicine researchers have identified a mechanism leading to life-threatening infections, where PKR protein causes macrophages to die, allowing bacteria to spread. The discovery may help develop inhibitors for PKR, controlling nasty infections and reducing flu-related deaths.
A study of 299 smokers found that nicotine nasal spray and skin patch both led to similar abstinence rates after six months. However, certain groups achieved higher success rates with one form over the other based on their ethnic background, weight and nicotine dependence level.
Researchers at NIAID have found that mouse immune systems produce antibodies capable of single-handedly neutralizing the SARS virus. This discovery confirms that vaccines triggering antibodies to the SARS virus are on the right track, and could lead to a faster development of effective vaccines or antiviral drugs.
Researchers found evidence of human herpesvirus 6 in tissues of 25 out of 35 children with Langerhans cell histiocytosis, a rare condition affecting bones and multiple organ systems. The study suggests the virus interacts with an underlying predisposition to the disease, potentially leading to new treatments and diagnostic tests.
Researchers have identified a dual strategy used by viruses to subvert the immune system, involving the targeting of hematopoietic progenitors and inhibition of dendritic cell maturation. This study sheds light on the mechanisms of viral immunosuppression, enabling better understanding of immune evasion tactics.
In 2003, US blood banks screened nearly 6 million donations for West Nile virus, identifying over 1,000 infected units and removing them from the supply. The screenings reduced the risk of transmission associated with blood transfusions, highlighting the effectiveness of proactive measures in preventing disease spread.
A blood test measuring procalcitonin levels can guide antibiotic treatment for lower respiratory tract infections, reducing unnecessary use and promoting more targeted therapy. The study found that withholding antibiotics based on procalcitonin thresholds did not compromise health outcomes in patients with viral infections.
Researchers found that younger children and smaller children have a lower risk of infection due to higher T lymphocyte counts, while low dendritic cell numbers correlate with increased risk. A closer cord blood match also reduces the risk of infection.
Researchers at Immerge have identified that human-tropic PERV is acquired during life, rather than being present in the germ-line DNA of mini-swine. The study found no viruses in the germ-line DNA that could infect human cells, paving the way for safer xenotransplantation procedures.
The researchers solved the structure of the hemagglutinin protein, a crucial component in understanding the 1918 flu outbreak. The study reveals that the virus likely originated from birds and its unique surface proteins made it particularly deadly to young adults.
Scientists at Dana-Farber Cancer Institute have identified a human monoclonal antibody that blocks SARS virus infection by neutralizing its entry into cultured cells. The antibody, isolated from a collection of 27 billion antibodies, shows promise in animal tests and could be developed for clinical trials to prevent and treat the disease.
A study by Singapore investigators found that SARS infection occurred in healthcare workers with normal chest X-rays, even those not directly exposed to patients. The researchers detected SARS antibodies in 8 out of 112 exposed workers, with symptoms ranging from mild to severe.
Researchers at NIST and University of Maryland discovered a molecular mechanism involving RNA structure changes that may play a role in HIV-1 viral assembly. This finding could lead to the development of new antiviral drugs by targeting these structural changes.
A recent avian influenza outbreak in Vietnam underscores the importance of veterinary science and animal husbandry in preventing human pandemics. The article emphasizes that animal experts must receive adequate funding and resources to combat emerging diseases.