Articles tagged with Immune Response
A new study found that HIV-infected individuals with CD8 responses directed against the Gag protein have lower viral levels. This contradicts previous approaches focusing on broad responses against multiple viral proteins. The researchers suggest that targeting specific proteins like Gag may be more effective in controlling HIV.
Researchers have identified a molecule, osteopontin, that plays a central role in relapses of autoimmune diseases such as multiple sclerosis, lupus, and rheumatoid arthritis. Osteopontin promotes the survival of T cells that carry out the damaging attack on myelin, increasing their destructive potential.
A study in mice with type 1 diabetes shows that an initial immune response to proinsulin triggers the attack on other proteins, leading to disease development. The findings suggest a potential therapeutic target for preventing this spreading response.
In a study published in the Journal of Clinical Investigation, researchers used RNA interference (RNAi) to silence the gene encoding prion protein, suppressing its accumulation in mice. This breakthrough provides hope for developing a new therapeutic approach to treat neurodegenerative disorders like CJD and BSE. Further research is ne...
Two candidate vaccines have shown promise in a recent study, demonstrating an immune response in healthy adults and inducing positive CD4 T cell responses. The combination of DNA priming and rAd5 boosting may lead to higher levels of T cell responses and improved vaccine efficacy.
Monash PhD researcher Ms Fleur Tynan has been awarded a Victoria Fellowship to study advanced cellular imaging techniques at Stanford University. Her research focuses on the human immune response to viruses, which may lead to developing therapeutics that assist in the anti-viral immune response.
A study published in Nature found that the reconstructed 1918 influenza virus induces a potent immune system response in mice, yet fails to prevent severe lung disease and death. Researchers hope to understand the trajectory of this infection and develop targeted therapies for other viral infections.
This study confirms the existence of immunological synapses, microanatomical structures similar to those of nerve cells, in laboratory rats. The findings settle controversy over their existence and functional significance during antiviral immune responses, paving the way for further research.
Researchers at Indiana University School of Medicine – Northwest propose that a family of proteins producing PGLYRP can be used to develop medications for HIV/AIDS patients. These proteins appear to be the front line in defending the body from infection, mounting a defense long before the body's main immune system responds.
Researchers identified the AgDscam gene, essential for recognizing a broad range of pathogens in mosquitoes. Silencing this gene increases susceptibility to bacterial infections and malaria, highlighting its potential as a target for novel control methods.
Researchers have discovered the structure of a protein called nucleoprotein, which helps viruses like rabies evade the human immune system. The protein acts as a 'clamp' to protect the virus RNA from degradation by host enzymes.
The study demonstrates an extremely high rate of prediction accuracy (95%) in a very complex pathogen, the vaccinia virus. Bioinformatics was able to reveal the vast majority of epitopes that trigger an effective immune response against the virus.
Activation of EGFR stimulates AMP production, enhancing skin's antibacterial defense against Staphylococcus aureus. Wounding alone activates defense mechanisms to prevent microbial growth and related skin infections.
Researchers found that T cells responding to Epstein-Barr virus-encoded nuclear antigen1 (EBNA1) are hyper-reactive and produce interferon-gamma, which shapes immune responses. This hyper-reactivity may trigger the destruction of myelin sheathing in nerve cells, leading to MS.
Researchers found a synergistic combination of a low-dose CD3 antibody and proinsulin peptide to reverse recent-onset type 1 diabetes in mice, promoting pancreatic beta cell regeneration. This approach may hold great potential for the treatment of individuals with recent-onset type 1 diabetes.
Lung surfactant plays a crucial role in balancing host defense and reducing surface tension. Research has also linked surfactant to the innate and adaptive immune systems, with collectins such as SP-A and SP-D regulating immune responses and preventing infection and lung injury.
The Duke study aims to determine whether a modified form of the investigational bird flu vaccine can trigger a strong immune response at lower doses. The seven-month trial will test varying strengths of the H5N1 vaccine, either with or without an aluminum hydroxide adjuvant.
Researchers found that a dose of 90 micrograms per shot was most effective in producing protective antibodies against bird flu. To make the vaccine available to more people, studies are underway to test an adjuvant called alum, which could allow for reduced doses and increased supply.
Researchers found that humans lost genes related to the sense of smell, bitter taste, and immune response, which may have improved our ability to fight infections. The loss of the CASPASE12 gene, in particular, led to a stronger immune response, but also made it harder for humans to fight off severe bacterial infections.
Scientists identify Langerhans cell precursor cells and protein Csf-1 essential for their transformation. This discovery may lead to new therapies for patients with Langerhans histocytosis, a rare disease affecting approximately 200,000 children annually.
Researchers found that up to 25% of injected malaria parasites stop in lymph nodes close to the bite site, where they can interact with immune cells and degrade. While partially developed or destroyed parasites may not contribute to symptoms, their presence could affect how the immune system responds to infection.
The Fluarix clinical study demonstrated the vaccine's ability to induce protective antibodies, making it a promising tool in bolstering flu vaccine supply. The successful collaboration between academia, industry, and government agencies enabled the rapid development of the vaccine.
A review of 225 studies found that chronically happy people are more successful across many life domains due to their positive emotions. Happiness is associated with behaviors that lead to further success in work, relationships, and health.
A study by Oregon State University researchers found that switching between tasks, like driving and cell phone use, leads to delays in response time and accuracy. The study suggests that simplifying tasks can help efficiency, but technology is complicating everything, including driving.
The Biodesign Institute is developing a subunit vaccine against tularemia using unique technologies, including high-throughput gene building and gene expression measurement. This approach aims to produce an effective and safe vaccine by identifying the best pathogen components to elicit an immune response.
Research shows lead may cause additional long-term health problems, disrupting immune cells that fight off pathogens. An estimated 434,000 US children under age 5 have elevated lead levels in their blood.
Researchers identified six gene variants associated with post-operative myocardial infarction following cardiac surgery. Collectively, these variants can explain 75% of the variability in heart damage, allowing physicians to identify high-risk patients and take precautions during and after surgery.
USU students Robert Anthony, Xialong Jiang, and Erika Lamb have been awarded fellowships by the Henry M. Jackson Foundation to study immune response and posttraumatic stress disorder in a neurobiological model. Their research aims to develop effective ways to combat these conditions in military service members.
Researchers at Mayo Clinic discovered that antiretroviral therapy (ART) can dramatically increase the production of disease-fighting T cells in non-HIV-infected individuals, including older adults. This finding has significant implications for developing new cancer vaccines and improving immune protection in vulnerable populations.
Researchers found that a natural product of vitamin A can regulate immunity and enhance vaccine response when combined with PIC. The combination resulted in a four to seven times better immune response compared to individual treatments.
Researchers discovered a mitochondrial protein, MAVS, that activates immune response against viral infections. Cells without MAVS are vulnerable to virus, while those with excess MAVS resist infection.
Researchers found that PGE2 up-regulates T-regulatory cells, suppressing immune function and fueling cancer growth. The study suggests using COX-2 inhibitors like Celebrex to augment immune responses in cancer patients.
A study published in the Journal of Neuroscience Research found that patients with multiple sclerosis (MS) have lower expression of the FOXP3 gene, leading to reduced immune suppression. A new drug called NeuroVax was shown to increase FOXP3 levels and restore immune regulation in some patients.
Researchers at Ohio State University found that plants have a dual defense system against pathogens, using both PAMP and R-protein pathways. The study reveals that these pathways work together to provide stronger immune responses, allowing plants to resist infections more effectively.
Research found that stress before vaccination led to better immune responses and greater protection nine months later. Stress may prime the immune system for oncoming trauma, enhancing its long-term memory for antigens.
A study found that lonely college students have a weaker immune response to the flu shot, with sparse social ties and feelings of loneliness independently contributing to poorer immunity. Chronic loneliness can predict poor health and well-being, and may be linked to stress and impaired health behaviors.
Acute stress temporarily mobilizes all major types of immune cells, which may enhance the immune system's ability to protect against infections and diseases. However, chronic stress may weaken the immune system, and excessive stress can worsen pre-existing inflammatory illnesses.
A study found that family conferences in ICUs missed opportunities to discuss withholding or withdrawing life-sustaining therapy due to clinicians' failure to listen and respond appropriately. The missed opportunities fell into three categories: listening, acknowledging emotions, and addressing medical ethics principles.
QS-21A has been shown to significantly improve the body's immune response in vaccine therapies against aggressive diseases such as melanoma and HIV-1. By improving its potency, QS-21A could save patients money on expensive vaccines and stretch limited supplies.
Scientists discovered that birch pollen extracts inhibit a protein that normally blocks allergic reactions, leading to increased sensitivity in allergy-prone individuals.
Researchers have developed a peptide vaccine that produces an immune response in 60% of patients with myeloid leukemia, resulting in complete molecular remission for three patients. The vaccine targets the PR1 peptide, which is overexpressed on leukemia cells, inducing immune T-cells to kill cancer cells while leaving normal cells intact.
Researchers found that increased fat reserves bolster immune systems in animals, providing extra insulation from cold and energy to fight pathogens. This study suggests a potential benefit of temporary weight gain during winter holidays.
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 new study by the Schepens Eye Research Institute reveals a previously unknown connection that stimulates immune response in the eye and other parts of the body. By blocking VEGFR-3 growth factor, researchers can arrest the rejection process, leading to improved survival rates for corneal transplant patients.
Scientists at the University of Rochester Medical Center created an Alzheimer's vaccine with a customizable immune response using a harmless form of the herpes virus. The modified vaccine proved safer while still causing a 20-percent decline in amyloid plaque in the brain, offering new hope for developing a safe and effective vaccine.
This innovative approach enables visualization of immune system killer cells attacking tumors, providing insights into the immune response. Dr. Witte's collaboration with clinicians and scientists is paving the way for molecular imaging in clinical trials.
Researchers found that larger islands with more native parasites have weaker bird immune responses, making them ill-prepared for invasive infections. This study sheds light on how island populations respond to exotic disease introduction through human activities.
Scientists found that a protein inside the rabies virus can enhance the immune response against foreign proteins, enabling the creation of vaccines against other infectious agents. The technique could lead to the development of longer-lasting vaccines against diseases like anthrax.
Researchers at Thomas Jefferson University have made significant progress in developing a new vaccine against malignant melanoma, a potentially deadly skin cancer. The vaccine showed promise in a phase I-II study, with 8 of 10 patients developing positive responses to their own tumor cells that were chemically modified.
Researchers at OHSU are developing a new class of viral vaccine vectors, based on cytomegalovirus (CMV), to serve as the basis of an HIV vaccine. The approach aims to generate a superior and more durable anti-HIV immune response that can persist over subsequent years.
Researchers studying epilepsy patients who underwent brain surgery on either side found that those with left-brain surgery experienced decreased immune function, while right-brain surgery boosted immune response. The findings raise concerns about protecting patients from infection following strokes or left-brain surgery.
Studies of over 61,000 transplant patients demonstrate CellCept's unique survival benefits for solid organ transplant recipients. Additionally, CellCept reduces acute rejection rates and improves graft function, while also providing a lower risk of infectious death.
A study found that moderate exercise over 11 months improved immune activity, increased muscle strength, and decreased total cholesterol and LDL levels in older adults. This suggests a simple home-based exercise program can provide important health benefits for aging individuals.
A team of scientists has successfully tested a new smallpox vaccine that shows promise as an alternative to the existing Dryvax vaccine. The MVA vaccine was found to elicit equivalent or higher immune responses in nonhuman primates, providing protection against monkeypox.
A Stanford research team is studying how mouth microbes interact with their hosts to shape immune system development. They have identified new microorganisms in the oral pocket that were previously unknown and are working to understand complex interactions between oral flora.
A phase II trial of a melanoma vaccine showed promising results, with nearly half of patients living at least five years after receiving the treatment. The vaccine's effectiveness was influenced by the dosing schedule and immune response, highlighting the importance of personalized medicine in cancer treatment.
Experimentally activating individual worker immune responses in Bombus terrestris colonies results in reduced social unity and collective earlier reproduction. This suggests that key elements of immune defense are retained through evolutionary sociality.
Researchers have successfully developed a cancer vaccine using low-affinity epitopes that shows high vaccination efficiency in antitumor immunotherapy. The study, published in JCI Journals, offers promising results for the treatment of various types of cancer.
A new vaccine formulation uses a bacterial protein called listeriolysin O to boost the immune response against viral diseases. The vaccine has shown promise in preliminary animal studies, with a 100% survival rate in mice infected with a lethal viral strain.
Wilfred Jefferies and his team have discovered a cellular pathway that triggers immune responses and identified a specialized organelle within dendritic cells controlling immune system activation. The findings hold enormous implications for patients, enabling targeted treatment adjustments to regulate immune responses.