Articles tagged with Immune Response
A study published in PLOS Pathogens suggests that blocking the PD-1/PD-L1 pathway can increase regulatory T cell numbers and virus production, while also boosting killer T cell proliferation. The researchers found that this approach may be beneficial for HIV-infected patients, but only when combined with antiretroviral treatment.
Late-treatment HIV patients with low CD4 levels progress to AIDS at high rates if immune response isn't recovered. However, if viral load is undetectable and CD4 counts rise above 200, mortality and progression decrease.
A blood test can predict how quickly patients recover from surgery by identifying their unique immune state before the procedure, according to a new study. This simple test may help personalize recovery approaches and have a significant impact on perioperative medicine.
Researchers identified how Salmonella infections trigger thrombosis through inflammation regulation and platelet activation. Thrombosis persisted even after bacteria were cleared from the blood, highlighting a previously unknown pathway involved in sepsis complications.
Researchers have discovered that the antigen-presenting protein MHC1 must 'wriggle' in a specific way to perform its vital functions, which could lead to new immunotherapies for diseases. The findings also have potential applications for reducing allergic reactions by understanding how additives are detected by the immune system.
Researchers have developed a new RSV vaccine candidate that has shown promising early results in young children, eliciting more antibodies than previous candidates. The vaccine uses a genetically engineered version of the virus with a deleted M2-2 protein to induce a stronger immune response.
Researchers have developed methods to overcome technical limitations in studying the immune system, allowing for investigation of interdependent components and their impact on functions at the systems level. The new book provides valuable insights into team science and the application of computational tools to model immunity.
Researchers believe that tick spit proteins, such as alpha-gal, can cause severe allergic reactions in humans. A vaccine could be created to target these proteins, potentially providing protection against tick bite allergies.
A study published in Nature found that guppies evolved 135 genes in response to a new environment, with most changes affecting biological processes like metabolism and immune function. However, the initial response was often opposite to the eventual evolutionary change, suggesting that genes can adapt quickly in the short term.
Researchers at Washington State University discovered that altering the timing of an animal's sleep can have a significant impact on its immune response and overall sleep quality. The study found that mice with disrupted circadian cycles had blunted or overactive immune responses, making them more susceptible to illness.
A team of researchers at the La Jolla Institute for Immunology has identified LEF-1 and TCF-1 as master regulators that control the fate of T follicular helper cells. These transcription factors pre-program CD4+ T cells to respond to TFH induction signals, making them crucial for inducing a strong and lasting antibody response.
The article highlights Stanley Perlman's career journey from studying mouse viruses to researching human coronaviruses like SARS and MERS. His work demonstrates the importance of basic research in understanding virus interactions with the immune system, which can inform strategies for preventing or treating diseases.
A clinical trial testing an Ebola vaccine developed on a new cell line is underway in Senegal, aiming to provide a rapid response to outbreaks. The trial uses two vaccines, ChAd3-EBO Z and MVA-EBO Z, which have shown excellent safety profiles and promise for low-cost mass production.
The study demonstrates how the microbiota acts on the balance of the immune system, specifically blocking type 2 immune responses that lead to allergic reactions. By stimulating type 3 cells, which coordinate phagocytosis and killing of microbes, the researchers provide an innovative therapeutic approach for allergy treatment.
Researchers characterize immune proteins that recognize and eliminate virus, providing insight into developing a potent Nab response against different HIV subtypes. Studies examine the efficacy of Nabs in blocking direct cell-to-cell transmission of HIV, highlighting the importance of controlling virus replication via this pathway.
A team of researchers has found a way to measure the aging process in young adults, revealing that some people are aging three times faster than their peers. The study used biomarkers such as kidney function, liver health, and telomere length to determine biological age and pace of aging.
Researchers at Cedars-Sinai Medical Center tested two methods to preserve cognition in laboratory mice with Alzheimer's disease. Immune cells from bone marrow and a drug for multiple sclerosis were found to travel into the brain, resisting abnormalities associated with the condition. The study showed measurable benefits in mice.
Researchers report that statins and angiotensin receptor blockers, commonly used for heart disease, can stabilize endothelial cells lining blood vessels in Ebola patients. This approach may improve survival rates in infected individuals by bolstering the immune system.
Researchers found that innate lymphoid cells in males produce a protein that protects against the disease, while female mice remain inactive and do not produce this protein. This discovery opens up new avenues for investigation into sex-determined disease susceptibility.
MIT researchers found that larger spherical devices are better able to maintain their function and avoid scar-tissue buildup, outperforming smaller ones in tests on diabetic mice and nonhuman primates. This discovery could lead to the development of long-term implants for diabetes treatment and other diseases.
A study found that repeated schistosome exposure leads to a limited immune response due to the presence of IL-10-producing CD4+ T cells in the skin. These cells help prevent excessive inflammation and allow the parasite to survive by suppressing the immune system.
Researchers found that children given daily doses of oral insulin developed a protective immune response to the disease, which could lead to the development of a vaccine against type 1 diabetes. The study showed increased immunity with higher doses of oral insulin, suggesting a potential treatment strategy.
Researchers at the IRCM have discovered a new mechanism affecting AID, a crucial enzyme for the immune response, which could lead to improved treatment for the common flu, as well as lymphoma and leukemia. The study identified a protein eEF1a that retains AID in the cell's cytoplasm, allowing it to access the nucleus and boost activity.
Research at Duke University Medical Center found that increasing bacterial and worm diversity in the digestive tract enhances immune function, with better responses to vaccination and increased natural antibody production. The study suggests that biome enrichment may serve as an 'immune trainer' to improve overall health.
Researchers developed personalized melanoma vaccines that target unique mutations in each patient's tumor, increasing the number and diversity of cancer-fighting T cells. The vaccines were shown to be safe and effective in a first-in-people clinical trial, setting the stage for potential use in preventing recurrence.
Chronic alcohol consumption compromises the skin's protective immune response, leading to increased illness and bacterial burden. Restoring IL-17 levels improves skin injury and bacterial clearance defects in mice with Staphylococcus aureus skin infections.
Critically ill patients who undergo early exercise experience marked improvements in lung, limb, and respiratory muscle function. Researchers have identified specific mechanisms by which exercise turns off pathways involved in muscle wasting.
A collaborative team identified mechanisms involved in antibody response to the Marburg virus by studying a survivor's blood. The study reveals that the human immune system can effectively fight Marburg virus infections by producing antibodies.
Dr. Juan Martinez and his team are studying Rickettsia rickettsii, Rickettsia conorii, RMSF, and MSF to identify proteins that play a role in pathogenesis and develop strategies to inhibit their function.
Researchers at UVA School of Medicine have identified interleukin-33 as the biological trigger for a protective immune response to spinal cord injury. This discovery holds promise for improved treatments and diagnostic tests for conditions such as Alzheimer's disease and brain trauma.
Researchers at TSRI have developed a more effective nicotine vaccine by targeting only the left-handed version of nicotine, eliciting four times as many antibodies. The new vaccine has shown promise in animal studies and could lead to treatments for smoking addiction.
Researchers at UNC Chapel Hill created inhalable vaccines targeting lung diseases by modifying particle surface charge, inducing local and systemic immune responses. This novel approach may lead to improved vaccine accessibility in low-resource areas without refrigeration requirements.
Researchers at Ruhr-University Bochum discovered a protein called RidA that protects intestinal bacteria E. coli from immune activity caused by chlorine. In the presence of chlorine, RidA binds to other proteins, preventing them from coagulating and losing their function.
A phase-Ib clinical trial found durable responses in almost one out of five patients with metastatic triple-negative breast cancer treated with pembrolizumab. The treatment produced significant activity, with five patients experiencing complete or partial responses, and seven others showing stable disease.
A study found that seasonal flu vaccines protect against multiple flu strains, including those not included in vaccine formulations. The researchers also discovered that exposure to birds can elicit immune responses to avian influenza viruses in humans.
A study found that seasonal flu vaccines can induce strong immune responses against multiple flu virus subtypes, including some not included in vaccine formulations. This could provide protection against emerging pandemic strains from avian populations.
Researchers found that immune mechanisms triggered by viruses differ depending on entry route, with Toll pathway activated for feeding-related infections. The study suggests that understanding these differences can help find targets to block human diseases transmitted by insects.
A team of researchers has discovered that 'back boosting' the immune system by pre-emptively vaccinating against likely future strains of the influenza virus can significantly improve vaccine effectiveness. This approach would allow for more targeted and effective vaccination campaigns, potentially saving millions of lives worldwide.
Research published in the Journal of Leukocyte Biology suggests that poor eating habits alter gene expression, leading to persistent effects on the immune system and increased risk of cardiovascular disorders. Even after successful treatment of atherosclerosis, the immune system's function remains altered.
Researchers at Duke University have discovered a key gene that regulates the immune system's transition from high alert to recovery after an infection. The finding, published in PLOS Genetics, highlights the importance of cellular homeostasis in repairing tissue damage and eliminating bacterial toxins.
Scientists at the University of Birmingham discovered how a rare fungus, Cryptococcus gattii, can infect healthy individuals by exploiting the body's immune response. The fungus triggers a 'division of labour' in its invading cells, allowing it to establish itself and cause life-threatening infections.
A large clinical trial found that an H7N9 flu vaccine mixed with an adjuvant provided a protective immune response in 59% of participants. The addition of the adjuvant enhanced the effectiveness of the vaccine, even at lower dosages.
A new experimental vaccine against H7N9 avian influenza prompted immune responses in 59% of volunteers who received two injections with an adjuvant booster. Without the adjuvant, immune responses were minimal regardless of vaccine dosage.
A recent clinical trial evaluated heterologous prime/boost regimens for preventative HIV vaccination, demonstrating strong anti-HIV immune responses in healthy volunteers. The results suggest that a regime combining NYVAC-B and rAd5-vectored vaccines yields better outcomes compared to other vaccine combinations.
Researchers at Oxford University found that dry roasting peanuts causes chemical modifications that activate the immune system, leading to an allergic response. This discovery may explain the higher prevalence of peanut allergies in Western countries compared to East Asia.
Researchers at LSU Health New Orleans have discovered that the protein Chop regulates the activity and accumulation of cells that suppress the immune response against tumors. The study found that removing Chop boosts the effectiveness of treatment, revealing it as a target for developing new immunotherapies to treat cancer.
Researchers found that antibiotic treatment before vaccination impaired antibody responses in mice, while gut bacteria played a crucial role. The study's findings suggest that the microbiome could be harnessed to modulate vaccine efficacy and may explain variations in vaccine responses globally.
The study found that younger people have a more robust immune response to grief, while elderly people are more likely to experience reduced immune function. The researchers suggest that hormonal supplements could be used to help individuals at risk of stress, but highlight the importance of a strong support network in managing grief.
A GW researcher has received a grant to develop genetic tools to study parasitic nematode (PN) infections, which affect one-third of all deaths worldwide. The goal is to better understand the infective process and host immune response.
Researchers found that brainwaves from a few individuals can accurately predict preferences of large TV audiences. The study used EEG to measure brain activity while participants watched TV shows and commercials, comparing the results to publicly available social media data and ratings from USA Today's Super Bowl Ad Meter.
A study at City College of New York found that analyzing the brainwaves of a few individuals can accurately predict preferences of large TV audiences. The researchers used electroencephalography (EEG) to capture brain activity while participants watched scenes from 'The Walking Dead' and Super Bowl commercials.
Researchers at Cleveland Clinic found that the immune system's response to protein S100B may contribute to memory impairment and cognitive dysfunction associated with conditions like chronic epilepsy and Alzheimer's disease. The study suggests that treatments targeting this autoimmune response could help alleviate symptoms.
Researchers at the University of Maryland have discovered a new process in human genes that can alter protein contents and functions. This process, known as programmed ribosomal frameshifting, may help the body regulate its immune response and prevent harmful side effects.
Researchers found that fruit flies' Toll pathway failed to respond to a fungal infection in space, while the Imd pathway remained robust. This knowledge may help NASA develop countermeasures for astronauts' weakened immune systems during long-duration space missions.
Researchers show that proliferation unlocks expression of Interleukin-10 in NK cells, a protein that moderates the immune system. This helps prevent hyperactivation of CD8 T cells, which can cause damage. The study provides another important role for lymphocyte proliferation and may help design vaccines.
Researchers at the University of South Carolina have discovered a novel pathway for marijuana to suppress immune functions, suggesting its potential in treating autoimmune diseases. The study found that THC can change histone molecules leading to inflammation suppression.
Scientists have discovered that endogenous dendritic cell-derived interleukin-27 promotes tumor growth by recruiting regulatory T-cells. This finding suggests that targeting IL-27 could lead to more effective cancer immunotherapies.
A new study by Lars Fändriks and Herbert Helander reveals the inner surface area of the gastro-intestinal tract in healthy adults is between 30-40 square meters. This is significantly smaller than previous estimates, which ranged from 180 to 300 square meters.
Researchers found that prior sleep deprivation enhances immune system response and recovery from infection in fruitflies. Flies with adequate recovery sleep after infection showed better survival rates compared to those without it.
Researchers have made a breakthrough in understanding plant disease resistance by revealing how plant immune receptors interact at an atomic level. The study found that dual-protein recognition systems are crucial for recognizing specific molecules from pathogens and activating defense mechanisms.