Articles tagged with Chronic Viral Infections
A recent study found that severe COVID-19 reactivates certain dormant viruses in hospitalized patients, which may contribute to autoimmune disease and chronic conditions. Notably, reactivation of Anelloviridae viruses was associated with long-term physical disability and long COVID.
A global vaccine trial evaluated fractional doses of COVID-19 boosters, finding they produced strong immune responses comparable to full-dose boosters. This could lead to extended vaccine supplies, improved equity in vaccination programs and reduced costs, especially in low-income countries.
A new study suggests that autoantibodies from Long COVID patients can induce persistent pain-like symptoms in mice, providing evidence for a potential causal role of autoantibodies in the condition. The research also highlights distinct biological subgroups and offers hope for targeted antibody-based therapies.
The American College of Chest Physicians (CHEST) has certified its first class of critical care advanced practice providers with the CCAPP designation. This achievement recognizes their dedication to high-quality patient care and their role in supporting multidisciplinary critical care teams. The CCAPP certification is designed to vali...
A new rapid test for hepatitis C could identify more patients who can be cured if insurers increase reimbursement to cover the test's high cost. The test's point-of-care feature makes it ideal for early screening and treatment in clinics and emergency rooms.
Public Health Alerts provide concise, data-driven information on disease outbreaks and urgent health events. The new series, launched by NEJM Evidence and CIDRAP, offers expert-reviewed reports to support public health evidence-based care.
The Mount Sinai Hospital has launched the country's first clinical manual for treating infection-associated chronic illnesses (IACIs), a comprehensive guide for diagnosis and care. The manual covers extensive learnings from the Cohen Center and provides practical strategies for clinicians to support patients with conditions such as lon...
A study published in PLOS One found a clear link between low vitamin D levels and an increased risk of being hospitalized by COVID-19. However, no association was found between low vitamin D and the risk of catching COVID-19.
The American College of Chest Physicians (CHEST) has launched a critical care APP education and certification program, covering 11 topic areas including patient-centered care and pharmacology. The CCAPP Certification Exam is now available, with an August 5 deadline to apply for the 2025 exam.
This study explored the immune dynamics across different phases of HBV infection, identifying key factors influencing T cell function and liver priming. The research team uncovered distinct types of intrahepatic T lymphocytes and dual roles of DC-SIGN+ macrophages in modulating immune responses.
A study estimated the epidemiology of hepatitis D virus (HDV) in China, finding a prevalence of HDV antibody positivity among 4,936 patients with chronic HBV infection. The rate was 0.24%, with only one patient having both anti-HDV antibody and HDV RNA positivity.
Researchers at Virginia Tech have developed a method to convert gut bacteria into mini protein factories that produce and release sustained flows of targeted proteins within the lower intestine. This approach eliminates a major roadblock in delivering drugs to this part of the body, offering potential treatment for chronic diseases.
Researchers at Virginia Tech have developed a way to convert gut bacteria into miniature protein factories that produce and release targeted proteins inside the lower intestine. This breakthrough could potentially treat chronic diseases.
Researchers at the University of Melbourne have identified a rare type of immune cell, called stem-like T cells, that holds the key to maintaining powerful, long-term immune responses. ID3+ T cells have the remarkable ability to resist burnout and maintain a powerful immune response over time.
A new longitudinal study has provided unprecedented insights into human papillomavirus (HPV) infection dynamics. The study found that non-persistent infections exhibit a plateau in viral load before rapidly declining, while chronic infections show a strong correlation between immune cells and virus production. This research could infor...
Researchers at Garvan Institute of Medical Research discovered how chronic hepatitis C infection leads to autoimmune disease by identifying 'rogue clone' B cells with harmful autoantibodies. The study found that a triad of genetic mutations is required for the autoimmune disease to develop, opening new paths for treatments.
The study evaluated 7 guidelines for the diagnosis and treatment of HEV infection, finding significant variability in quality and consistency. The guidelines scored poorly in areas such as stakeholder involvement, rigor of development, and applicability, highlighting the need for improvements.
A new study by Korea University College of Medicine shows that direct-acting antivirals significantly reduce liver-related clinical outcomes and lower the risk of disease progression to cancer or cirrhosis, increasing life expectancy for patients with Hepatitis C. The treatment approach has a high effectiveness rate of 90%.
The Chinese College of Interventionalists has introduced a consensus statement on TACE refractoriness in hepatocellular carcinoma, providing a framework for clinicians to identify and manage the condition. This move aims to optimize treatment strategies and improve patient outcomes, particularly in China where HCC incidence is high due...
A team of researchers has discovered a mechanism by which the liver's immune cells are suppressed in chronic hepatitis B, leading to organ damage. The 'sleep timer' function allows immune cells to weaken their activity over time, preventing them from proliferating excessively and causing further damage.
Researchers found that the frequency of activated TREG cells remained elevated during treatment and continued to be high even after the virus was eliminated. Inflammatory features, such as increased TNF signaling, were sustained in TREG cells, indicating long-term immune system changes induced by the chronic infection.
Researchers analyzed virus populations from a chronically infected patient and found that human-derived RNA fragments helped the virus replicate better in cell culture. The incorporation of host RNA into the viral genome may serve as a biomarker for early detection of chronic infections.
Studies found a negative relationship between HBV replication and liver inflammation in HBeAg-positive patients with high viral DNA levels, which shifted to positive relationships for those with low DNA levels or HBeAg-negative status. This interaction suggests a complex relationship between viral replication and liver damage progression.
Researchers identify a promising strategy for combating hepatitis B virus (HBV) by boosting the effects of immune cells called stem cell memory T cells (TSCMs). In a mouse model, introducing TSCMs from patients into mice resulted in the elimination of HBV-infected liver cells.
Australian researchers have identified a previously unknown immune B memory cell that fails to produce high levels of antibodies against persistent infections. The discovery may lead to earlier intervention and prevention of chronic viral infections like HIV or hepatitis.
A subset of CD4+ 'helper' T cells helps fight cytomegalovirus infection and reduces the chances of transmission. The late-rising T cells expand long after the initial response has died down, gathering in high numbers in the salivary gland.
Researchers aim to identify genetic risk factors and mechanisms underlying virus-induced asthma, using artificial intelligence-based techniques and patient-derived models. The study may lead to personalized prevention campaigns and mechanism-targeted drugs.
Researchers have found that gut health is the main determinant of systemic inflammation and disease progression in HIV. By targeting the root cause of problems, therapies may be able to slow the progression of the virus by preserving gut integrity.
Researchers discuss treatment refractory forms of chronic sinusitis, highlighting the importance of interdisciplinary diagnostics and therapy. Fungal infections are a rare cause, yet crucial to consider when treating this condition.
Researchers from the University of Copenhagen have solved the mystery of how the Hepatitis C virus evades the human immune system. The virus uses a molecule called FAD as a 'mask', cloaking itself in a form that is already present in cells, making it invisible to the immune system.
Researchers found that maternal overweight compromises the placenta's antiviral response, weakening its ability to protect the fetus. The study suggests that adequate antenatal care is crucial in preventing complications from Zika infection.
A study published in Journal of General Internal Medicine found that 41% of patients with post-acute sequelae of COVID-19 (PASC) had moderate to severe sleep disturbances. Black patients were three times more likely to develop these disturbances, highlighting the need for race-specific interventions to address disparities.
A study published in Journal of Hepatology found that some patients with chronic hepatitis B can achieve sustained immune control by discontinuing antiviral therapy after four years. This suggests a potential cure for the disease, which affects an estimated 350 million people worldwide.
Three real-world studies published in the Journal of Hepatology and JHEP Reports demonstrate that bulevirtide is well-tolerated and safe for treating chronic hepatitis delta. Long-term suppressive therapy with BLV monotherapy has the potential to reduce viral replication and improve liver function in difficult-to-treat patients.
A biological messenger called interleukin-33 (IL-33) plays a crucial role in maintaining cytotoxic T cells' 'marathon runner' state, allowing them to provide sustained immunity against chronic infections. This finding has implications for improving treatment of hepatitis C and cancer immunotherapy.
A new set of guidelines has been established to quantify hepatitis B virus DNA in infected liver cells, crucial for preclinical and clinical evaluation of therapeutic strategies. The standards were developed based on a study that identified the importance of sample type-tailored methods for accurate measurement.
A recent study found that 95% of UK adults living with Long Covid report experiencing stigma about their condition. The research aimed to develop a scale to measure this stigma and better understand its impact.
Researchers from Trinity College Dublin have identified an enhanced type I interferon response in women who resisted infection after exposure to hepatitis C. This finding has significant implications for understanding viral resistance and designing therapies to treat infected individuals.
Researchers have reverse-engineered a virus linked to chronic kidney disease in cats and described its mechanism of infection. The feline morbillivirus, or FeMV, can spread from host to host through urine, similar to the zoonotic Nipah virus.
A UNIGE team identified a three-step mechanism that allows our body to defend itself against hepatitis B. The complex detects the viral DNA, traps it, and inhibits the virus' chromosome.
Researchers mapped the spread of pathogens in wild macaque populations near human settlements, finding that monkeys with high human interactions cause larger outbreaks. The study used computer simulations to predict disease transmission and identified key factors influencing outbreak size.
Researchers have developed a new treatment principle that combines DNA-based and protein-based vaccines to stimulate the immune system against both hepatitis B and D viruses. The treatment has been shown to protect cultured cells against HBV and HDV infection, producing high levels of neutralizing antibodies and T-cells.
A recent study published in Frontiers in Virology suggests that chronic COVID infections are the source of variants of concern. The researchers used a mechanistic, theoretical model to study the emergence of these variants, which were found to acquire a constellation of mutations that make them more transmissible and lethal. By identif...
Researchers analyzed 2.8 million adults with chronic disease diagnoses and found a correlation between adverse credit outcomes and rising medical debt. The study highlights the significant financial burden associated with chronic conditions.
The study found that despite a decrease in the California state prison population during the COVID-19 pandemic, those who remained incarcerated faced a higher burden of chronic disease and sustained disruptions in referrals for timely care.
A recent study in mice has uncovered a protein called BMI-1 that gets turned on too early in B cells during chronic viral infection, resulting in low-quality antibodies. Targeting this protein can change the nature of the B cell to produce higher quality antibodies, potentially providing a new therapeutic pathway.
DZNE researchers found that viral molecules facilitate the intercellular spreading of protein aggregates, which are hallmarks of brain diseases like Alzheimer's. The presence of viral ligands increases protein aggregate spreading between cells, potentially contributing to neurodegeneration.
Researchers comprehensively review T-cell responses to respiratory viral infections and chronic obstructive pulmonary disease (COPD), highlighting key characteristics of peptide-reactive T-cells. The review aims to improve understanding of the underlying mechanisms, leading to more effective immune protection and treatment methods.
A new biomarker, HBcrAg, has been found to accurately predict viral load in patients with chronic hepatitis B and reflect response to anti-viral treatments. This discovery may lead to improved monitoring methods for CHB, enabling clinical decisions and potentially improving patient outcomes.
Studies reveal that chronic viral infections can lead to T cell exhaustion, where immune cells become dysfunctional and unable to respond effectively. Researchers discovered epigenetic scars on exhausted T cells, which may prevent their recovery even after infection clearance.
Researchers at McGill University discovered a molecular mechanism that allows viruses to evade the immune system by modifying glycoproteins on CD8+ T cells. This pathway can be targeted to restore immune function and control chronic viral infections.
Researchers at La Jolla Institute for Allergy and Immunology identified a hitherto unknown precursor for a poorly understood subgroup of killer T cells. Single-cell transcriptome analysis revealed an unprecedented level of heterogeneity among immune cells, upending the traditional view of immune cells as unvarying entities.
New research reveals that type I interferons impair the humoral response to chronic viral infections, such as HCV and HIV. The study suggests that blocking B cell IFN-I receptors can restore antigen-specific responses, providing a potential therapeutic approach.
Viral myocarditis is a leading cause of sudden unexpected death from cardiovascular causes, particularly in men under 40 years old. Chronic myocarditis can lead to dilated cardiomyopathy requiring heart transplantation, with up to 30% of cases resulting from underlying viral infections.
Researchers at the University of Bonn have identified an immune factor responsible for chronic viral infections. The study found that a molecule called tumor necrosis factor (TNF) impairs the immune response in these cases.
Researchers found associations between CMV, HSV-2, and Toxoplasma gondii exposure and different aspects of cognitive decline in older people. The study suggests that chronic viral infections may trigger neurotoxic effects, leading to age-related cognitive impairment.
Researchers have discovered a new molecular marker for killer cells, allowing for the prediction of infection course. The marker, CX3CR1 receptor, is associated with chronic infections, where immune system effectiveness is compromised.
A global study found that chronic hepatitis B virus infection affects approximately 248 million people worldwide, with a disproportionately high burden in some countries. The prevalence of the disease varies significantly between countries, with up to 20% of the population infected in certain regions.
Chronic drinking is associated with a reduced CD8 T cell response to the influenza virus, leading to increased disease severity. However, some effector functions of CD8 T cells remain intact, suggesting that alcohol may have distinct effects on the immune system.
Research reveals that chronic infections impair the development of immune cell memory, reducing vaccine effectiveness. The study found that bystander chronic infections impede the transition of effector T cells to memory T cells.