Articles tagged with Immune Response
A rise in severe acute hepatitis of unknown causes (SAHUC) in children has been reported worldwide, with symptoms including jaundice, vomiting, and diarrhea. Diagnostic tests such as liver enzymes and biopsy reports can help identify the disease, but its etiology remains unclear.
Researchers analyze delta variant's biophysical characteristics, revealing unique traits that evade neutralizing antibodies and contribute to severe symptoms. The study sheds light on why vaccinated individuals can still contract the virus and why delta variant hospitalizations are higher than other variants.
Researchers at the University of South Australia have discovered that combining anti-rejection medication with immune checkpoint inhibitors can significantly reduce the risk of organ rejection and eliminate cancer cells in a quarter of patients. The study involved 22 patients with renal transplants and incurable locally advanced or met...
A study by researchers from the University of Chicago reveals that bacteria in donated organs complicate the immune response after transplantation. The findings show that immune responses against commensal bacteria add to the rejection of the organ, reducing the effectiveness of immunosuppressive drugs and causing damage to the graft.
Researchers investigated long-term features of immune responses to SARS-CoV-2 in children and adults who experienced mild infections. The study found that both groups developed similar patterns of antibody responses, indicating a shared immune memory.
Researchers have successfully used lasers to control neutrophils, a type of white blood cell, as natural microrobots in living fish. The 'neutrobots' can perform multiple tasks, including delivering drugs to precise locations in the body, and show promise for targeted drug delivery and disease treatment.
Children born to mothers with polycystic ovary syndrome (PCOS) are at a higher risk of developing infections, allergies, and other childhood illnesses by age 13. The study found that children of mothers with PCOS were 32% more likely to be admitted to hospital for various health problems.
A recent study published in CANCER found that adults with hematologic malignancies mounted immune responses after a COVID-19 booster dose, with 56% of nonresponders producing antibodies. However, the initial vaccine showed limited effectiveness, with only 48% of patients developing detectable antibodies.
Scientists have uncovered how the innate immune system detects HIV-1, even at very small amounts, and activates a two-step molecular strategy to combat the virus. This discovery could lead to new methods for treating HIV and vaccines, as well as insights into other diseases like Alzheimer's.
Researchers at Max Planck Institute identified two classes of molecules boosting plant immunity. These compounds drive critical defense-control hubs and could be used as natural immunostimulants for crop diseases.
Scientists have found that prior exposure to Staphylococcus aureus prevents effective vaccination due to immune response memory. To overcome this, the research suggests targeting only the protective component of the protein IsdB, generating a more effective vaccine against MRSA.
Researchers have created stem cell models that mimic the genetic disorder, revealing the role of WASP protein in regulating RNA splicing and finding potential therapeutic targets. These findings could lead to new treatments for Wiskott-Aldrich syndrome, a devastating immune deficiency disorder.
A new study published by UNC School of Medicine researchers found that fourth-generation vaping devices are associated with unique changes in markers of immune responses inside airways. The study compared the respiratory immune health effects of different types of devices, including third-generation and fourth-generation models.
A new analysis suggests that the COVID-19 vaccine generates antibodies targeting unique and conserved regions of the SARS-CoV-2 spike protein. The immune system's history with other coronaviruses shapes the patient's response, and the antibody response to common cold coronaviruses appears to follow different paths than to SARS-CoV-2.
Researchers at the Garvan Institute of Medical Research have identified key molecules linked to the mammalian-meat allergy caused by tick bites. The study reveals that a particular antibody type has a natural pocket into which a sugar molecule, galactose-α-1,3-galactose (alpha-gal), snugly fits.
Scientists at Indiana University School of Medicine discovered differences in FOXP3 isoforms controlling Treg cells and their impact on the immune system. These findings may lead to new treatments for autoimmune diseases and allergies.
Researchers analyzed antibodies to internal and surface proteins of SARS-CoV-2, finding that profiles of internal proteins predicted survival outcomes as well as those for surface proteins. The study suggests targeting other parts of the virus could enhance COVID-19 vaccines and therapies.
A research team at MedUni Vienna has discovered key mechanisms of mugwort allergy, laying the foundation for a potential vaccine. The study found that fragments of the major mugwort pollen allergen can be used for effective therapy, providing a promising first step towards causal therapy and prevention.
Wistar scientists have identified a novel therapeutic approach that inhibits the gene KDM5A, which improves immune cell infiltration and attack on tumors. This approach has shown promising results in both in vitro and in vivo studies, including reduced tumor burden and improved survival rates in mice with ovarian cancer.
A new study reveals that COVID-19 variants are formed in chronic patients with weakened immune systems, who experience prolonged infections. This leads to the accumulation of mutations, similar to those found in severe illness variants.
Researchers identified immune endothelial cells promoting inflammation and developmental endothelial cells supporting cell development, regeneration, and proliferation. The study's findings may lead to targeted treatments for lung infections and acute respiratory distress syndrome.
Researchers developed a nanoparticle sensor that can accurately distinguish between viral and bacterial pneumonia within two hours using a simple urine test. The sensor uses the host's immune response to infection, detecting specific protease patterns that serve as signatures of bacterial or viral infection.
Researchers at the University of Birmingham have identified a 'cellular brake' protein that may help prevent autoimmune responses in lung cancer patients undergoing immunotherapy treatment. This finding could enable clinicians to closely monitor high-risk patients and develop preventative strategies.
A commercial T cell test found that age and time since infection are significant factors related to the magnitude of immune responses to COVID-19. In vaccinated individuals, only increasing age was associated with poor T cell responses, while time from vaccination or type of vaccine had no effect.
Scientists have proven that inhaled aerosol vaccines provide stronger immune responses and better protection from respiratory infections compared to nasal sprays. This method delivers vaccine droplets directly into the airway, inducing a broader protective response.
A study found that unvaccinated children develop a rapid immune response to SARS-CoV-2, which may contribute to less severe symptoms, but limits the development of an immune memory response. Vaccination is believed to strengthen immunity by inducing key components such as memory T cell and B cell responses.
Researchers at the Messerli Research Institute developed a lozenge that compensates for micronutrient deficiencies in immune cells, reducing inflammation and allergic reactions. The study showed a 45% reduction in symptom burden during peak pollen season, presenting a new approach to allergy care.
UTSW scientists identify protein complexes that assemble into droplets resembling oil droplets in water, concentrating proteins and triggering an immune response. The study reveals how polyubiquitin chains, NEMO, and IKK come together to activate NF-κB and regulate immunity.
Researchers at MD Anderson Cancer Center found distinct gut microbiome signatures associated with immunotherapy response in patients with newly diagnosed glioblastoma. The study identified a link between gut microbiome signatures and immune checkpoint blockade response in melanoma, NSCLC, and sarcoma.
A new study by McGill University and US National Cancer Institute researchers reveals that antigen strength, rather than quantity, drives T cell responses. This discovery has implications for predicting vaccine efficacy and designing more effective immunotherapies.
Researchers evaluated the toxicological effects of BaP on bay scallops, finding increased immune response-related parameters with time at higher concentrations. The study suggests that BaP dampens the immune response of scallops and decreases their capacity to respond to oxidative stress.
A new study published in Cell compares the four types of COVID-19 vaccines and reveals that most people retain some immune response to SARS-CoV-2. The researchers found that immune memory may not prevent infection but helps fight severe disease.
This study shows how specific brain regions control the immune response during acute stress, highlighting the detrimental effect on fighting off infection. Researchers found that acute stress prompts a major migration of immune cells, diminishing an immune response to viruses like COVID-19 and influenza.
Australian researchers have discovered specific gene networks rewired to drive peanut allergy remission through a combination treatment of probiotic and oral immunotherapy. This network reprogramming shuts down the allergic immune response responsible for causing food allergies.
Researchers at the University of Chicago Medicine Comprehensive Cancer Center and the University of Amsterdam have identified a new mechanism that prompts T cell responses, including MHC-I cross-dressing. This discovery may lead to improved vaccine design and targeted cancer treatment strategies.
Researchers found that birds infected with lipopolysaccharide from bacteria reduced their body temperature by 2°C to conserve energy. In contrast, chicks fed and warm did develop fever. The study suggests that regulated hypothermia is an energy-saving response during severe infection, prioritized over maintaining a fever.
A population-scale study found COVID-19 vaccination is effective in most cancer patients but offers lower protection and wanes quickly. Vaccine effectiveness was lower (65.5%) in cancer patients compared to the general population (69.8%), with higher hospitalization and death risks despite vaccination.
Scientists discovered a novel biochemical mechanism in which plant immune receptors defend plants against invading microorganisms. TIR domains of these receptors break down NAD+ and process RNA/DNA molecules, leading to the production of cyclic nucleotides that activate cell death responses.
A new study analyzing 8 cohorts of COVID-19 patients found that antibody responses in previously infected individuals were relatively stable, providing protection from reinfection unless the new infection was the Omicron variant. Vaccination also boosted protection, with rapid immune responses observed even after a single vaccine dose.
A new study by Gladstone Institutes and UC San Francisco found that infection with the Omicron variant provides weak immune response in unvaccinated individuals, failing to confer broad protection against other variants. In contrast, vaccinated individuals show stronger immunity against multiple COVID-19 strains.
Two studies found that a third dose of mRNA vaccine generates high enough antibody levels to neutralize BA.2 and deltacron, as well as other omicron sublineage variants. Booster shots show stronger protection against these variants than just two doses, particularly against deltacron.
The study reveals that ZNG1 is a protein that puts zinc into other 'client' proteins, playing a crucial role in regulating cellular zinc homeostasis. ZNG1's identification opens up a new area of biology for exploration and may be one of the most important regulatory strategies by which humans cope with severe zinc starvation.
A study published in PLOS Medicine found that mRNA vaccines show better protection against COVID-19 variants compared to viral vector vaccines. The research, conducted among healthcare workers, revealed higher neutralizing antibody responses in mRNA vaccine recipients against VOCs, including Omicron.
Researchers compared SARS-CoV-2 antibody titers after Pfizer-BioNTech and Moderna COVID-19 vaccines in immunosuppressed patients. The study found differing antibody responses among these individuals, who have decreased immune responses to standard vaccines.
A new biomaterial-based technique has improved islet transplants for type 1 diabetes treatment by inducing permanent immune acceptance. The microgels educate the immune system to accept the graft, making it possible to regulate blood glucose levels without chronic immunosuppression.
Researchers found that COPD leads to premature senescence of the immune system, reducing CD4+ and CD8+ T cells. This disruption impairs the immune system, making COPD patients more susceptible to infections.
Researchers found that a single mRNA vaccine booster shot can provide the same level of protection as three doses, making it a promising investment for resource-poor countries. The study suggests that this strategy could benefit billions of people worldwide and help combat emerging COVID-19 variants.
Emory University researchers have identified a mechanism for skin cell death that could lead to new treatments for skin infections, alopecia, hives, and potentially melanoma. The study reveals that a protein called gasdermin A induces pyroptosis in skin cells, serving as an early warning system against bacterial attack.
The new center aims to advance a groundbreaking combination of focused ultrasound and cancer immunotherapy, potentially revolutionizing cancer treatment. The partnership will focus on overcoming existing limitations of immunotherapy and expanding treatment options for various types of cancer.
Researchers at the University of Birmingham found that infected fruit flies continue to engage in courtship and mating behaviors, similar to uninfected flies. The study suggests that animals may invest more in reproduction when faced with a potential life threat, potentially to pass on genes to the next generation
A new NIH-funded study will investigate the effects of semi-volatile organic compounds (SVOCs) on infant and childhood immunity, filling a knowledge gap in SVOC health impacts. The research aims to identify specific SVOCs or mixtures that impair immune function, which could lead to new preventive measures and interventions.
Researchers developed a new test method to detect tuberculosis (TB) progression from latent infection in elephants using IgG antibodies against Antigen 85B. High levels of IgG against ESAT6/CFP10 remained constant, while IgG against Ag85B increased before disease onset and declined with treatment.
A University of Washington model found that the body's ability to create cloned immune cells falls significantly with age, leading to increased susceptibility to COVID-19 in the elderly. The study suggests that genetic limits on cell division may play a role in the devastating effects of COVID-19 on older adults.
A study found that vaccines induce immune responses beyond neutralizing antibodies, involving T cells and the Fc receptor, to control viral replication and prevent severe disease. The researchers observed dose-dependent effects on these immune mechanisms, providing insights for future vaccine design and boosting.
Researchers found that individuals with a diverse population of macrophage cells, which include M2 and regulatory macrophages, are better protected against severe COVID-19. The study suggests that a balance between pro-inflammatory and anti-inflammatory responses is key to preventing the worst symptoms.
Researchers discovered that aging lymph nodes near the skin deteriorate faster than those deeper in the body, compromising the immune response. This can lead to weakened immunity against skin infections, vaccinations, and even skin cancers.
Researchers found that salicylic acid and jasmonic acid increase in response to fungal infection, increasing plant resistance without negatively affecting growth. High levels of both hormones make trees more resistant to fungal attack.
The study found that T-cell immunity was effective against Omicron variants in approximately 90% of vaccinated Europeans. The researchers identified a specific HLA-DRB1*03:01 variant that allowed the virus to evade immune recognition, particularly affecting individuals with this genetic variation.
A UCLA-led team found that an abnormally suppressed immune system, not a persistently hyperactive one, may be to blame for some cases of long COVID-19. The study suggests boosting immunity in those individuals could be a treatment option.
A blood test can predict which patients with COVID-19 pneumonia are most likely to become severely ill. Researchers found that levels of certain host proteins increased or decreased at different stages of hospitalization, providing insight into the progression of disease.