Articles tagged with Immune Response
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.
Vanderbilt University is one of nine US sites participating in a phase I trial of the Merck HIV vaccine, designed to test its safety and ability to stimulate immune responses in healthy volunteers. The study aims to generate cellular immune responses that could prevent the virus from spreading in the body.
Researchers discovered a peptide antigen that targets glioblastoma multiforme, a highly aggressive brain tumor. The immune system recognizes this antigen, triggering an immune response and potentially leading to longer patient survival.
A new study finds that tai chi chih significantly increases immune cell levels and improves physical functioning in older adults with shingles. The exercise program was comparable to hip replacement surgery in boosting immunity and reducing symptoms.
The NIH has awarded $85 million to five cooperative centers for translational research on human immunology and biodefense. Researchers will develop new ways to analyze immune cells and use imaging technologies to study vaccine responses, aiming to strengthen the immune system against diseases.
Researchers found that the abnormally active Bcl10 gene drives B cells to become cancerous, suggesting a drug blocking the gene could be effective treatment for MALT lymphoma. The study also showed that mice lacking Bcl10 genes cannot launch an effective antibody response against bacteria.
Scientists at NIAID and USAMRIID developed a prime-boost vaccine strategy that protects monkeys from Ebola infection. The boost alone shows promise in offering quick but weaker immune response.
A study reveals that elderly humans and patients with Alzheimer's disease exhibit increased T cell reactivity towards Abeta, a protein linked to the aging process. This selective increase in Abeta-reactivity has implications for developing Abeta vaccines and may be connected to disease susceptibility and progression.
A new study shows that a derivative of green algae Chlorella pyrenoidosa improves the body's immune response to influenza vaccines. The study found significant increases in antibody responses after supplementation with two different doses of the extract, with no adverse effects reported.
A recent study published in the Canadian Medical Association Journal investigated the effects of a Chlorella-derived dietary supplement on immune function and influenza vaccination. The results showed no significant increase in antibody response to the flu vaccine overall, although some increase was seen in participants aged 50 to 55.
Researchers at Emory University discovered a novel mechanism of how anthrax disables the immune response by compromising dendritic cell function. The study found that the lethal factor (LF) disrupts mitogen-activated protein kinase enzymes in dendritic cells, leading to lethargy and preventing the activation of the immune system.
Researchers are investigating how exercise affects immune function in older populations, aiming to prevent infections and improve health outcomes. Preliminary data suggests moderate exercise may boost immune function measures and reduce mortality caused by influenza.
Researchers have developed a third-generation lentivector that transduces dendritic cells in vivo, inducing a strong and persistent antigen-specific immune response. This approach may replace costly and labor-intensive methods currently used to elicit tumor-specific cytotoxic T lymphocyte responses.
Researchers use high-speed imaging to track movement of calcium waves in cell signaling, identifying a sequence of amino acids (LTL) that controls the pathway. The findings have implications for treating autoimmune diseases such as arthritis and uveitis.
A study published in JCI Journals identified unique immunological factors produced by immune cells of peanut-allergic children compared to non-allergic individuals and those who outgrown their allergies. These findings suggest the development of allergic reactions depends on host immune response rather than inherent allergenic properties.
Researchers discovered that MHC proteins, including M10, play a crucial role in detecting and modulating pheromone activity in mice. The findings suggest that these proteins may act as escorts for pheromone receptors, allowing them to reach the surface of neurons where chemical reception takes place.
Vanderbilt University Medical Center researchers found that blocking the prostaglandin E2 (PGE2) receptor EP2 may restore the immune system's ability to kill tumors. In mouse models, tumors grew smaller and mice survived longer when the EP2 receptor was absent.
Researchers found leptin significantly correlates with reduction in food intake and weight loss prior to developing EAE symptoms. Modulating leptin concentration through dietary approaches may have potential utility in treating MS and other autoimmune diseases.
Researchers found that patients infected with one strain of HIV can develop superinfection with another strain, compromising treatment. Genetic analysis confirmed the presence of a second type of HIV in the patient's blood, indicating that superinfection is possible and poses unique challenges for vaccine development.
Researchers found that a patient's immune system did generate new responses against the unique parts of the virus B, but these responses were not sufficient to prevent re-infection. The study supports the need for a preventive vaccine that targets multiple HIV strains.
A study in Greenland found that atopy increased by nearly 100% between 1987 and 1998, affecting all age groups. The rise in allergies is linked to a transition from traditional to modern society in Greenland.
Researchers found that CD8 T cell responses from laboratory workers vaccinated decades ago remained robust and long-lasting. The findings suggest a need for reevaluation of the durability of smallpox vaccine-induced immunity.
Researchers have developed a potential treatment for Creutzfeldt-Jakob disease (CJD) by using CpG oligodeoxynucleotides to stimulate the immune system. Studies on mice infected with scrapie prions showed improved survival times, suggesting a possible therapeutic approach for human CJD patients.
A team of researchers will study the role of Rac2, a protein important in phagocytic blood cell function, using mice that lack a functional Rac2 gene and exhibit immune system defects. The long-term goal is to develop novel approaches to control phagocyte function and disease.
A recent study found that CellCept therapy can effectively reverse kidney damage and improve graft survival in patients with chronic kidney function decline. The results showed a significant increase in kidney function reversal or stabilization in patients treated with CellCept compared to those on cyclosporine.
Proteins: From Sequence to Structure is the first book in the Primers in Biology series, covering sequence, structure, and functional properties of proteins from a post-genomic focus. The authors, Gregory Petsko and Dagmar Ringe, are authorities in their field and have received high praise for their comprehensive primer.
Researchers found that stressed mice exhibited increased diarrhoea responses to egg albumin, while non-stressed mice also showed occasional reactions. The study suggests chronic stress may contribute to food allergies and intestinal diseases like Crohn's disease.
Researchers found that Copaxone, a commonly used MS treatment, stimulates CD8 cells in patients, whereas untreated patients show weaker responses. This new approach enables effective evaluation of both CD4 and CD8 cells taken directly from patients.
Researchers discovered that hamsters have higher levels of immune cells in their bloodstream during winter months and in response to acute stress. This enhanced immune response helps the animals prepare for potential injury or infection.
Researchers found that early in HIV infection, CD8 T cells become unresponsive to HIV surface molecules, suppressing their ability to attack infected cells. This leads to a dominant immunosuppressive response mediated by the molecule TGF-beta.
Scientists have identified ILT3 and ILT4, a key pair of molecules that function as a brake for the immune response. Increasing their activity on dendritic cells may create tolerance to foreign tissues, while decreasing it can enhance the immune response against malignant cells.
Research found that regular alcohol intake higher than 70 grams per week is associated with increased total serum IgE levels. Moderate drinking may also lead to abnormal immune responses, affecting the control of the immune system's response to allergens.