Current Immune Responses News and Events

Current Immune Responses News and Events, Immune Responses News Articles.
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Innate immune system worsens the situation in severe COVID-19
In patients with severe COVID-19, the innate immune system overreacts. This overreaction may underlie the formation of blood clots (thrombi) and deterioration in oxygen saturation that affect the patients. This is shown in an Uppsala University study published in the journal Frontiers in Immunology. (2021-02-23)

B cells continue to work against SARS-CoV-2 months after infection, but do not recognize mutant
A new analysis of B cells and more than 1,000 different monoclonal antibodies from 8 patients with COVID-19 shows that, contrary to previous hypotheses, protective B cell responses to the SARS-CoV-2 spike protein remain stable and continue to evolve over a 5-month period, many months after the initial period of active viral replication. (2021-02-23)

Scientists identify potential contributor to hyper immune responses in patients with severe COVID-19
Researchers have pinpointed a helper T cell population in the lungs of patients with severe COVID-19 that may be central to the development of hyperinflammation, lung injury, and subsequent acute respiratory distress syndrome (ARDS) during disease (2021-02-23)

Plant responses to climate are lagged
Plant responses to climate drivers such as temperature and precipitation may become visible only years after the actual climate event. This is a key result of new research led by the German Centre of Integrative Biodiversity Research (iDiv), the Martin Luther University Halle-Wittenberg (MLU) and the Helmholtz Centre for Environmental Research (UFZ) published in Global Change Biology. The results indicate that climate drivers may have different effects on the survivorship, growth and reproduction of plant species than suggested by earlier studies. (2021-02-22)

Absence of natural killer cell receptor associated with severe Covid-19
The course and severity of COVID-19 in individual patients is largely influenced by the interaction between the SARS-CoV-2 coronavirus and the human immune system. The NKG2C receptor communicates with an infected cell via one of its specialised surface structures, HLA-E, which results in the destruction of virus-infected cells. However, due to a genetic variation, approximately 4% of the population naturally lack the this receptor NKG2C, and in 30% of the population this receptor is only partially available. (2021-02-22)

High fructose diets could cause immune system damage
People who consume a diet high in fructose could risk damaging their immune systems. (2021-02-22)

Improving immunotherapies for blood cancers: real-time exploration in the tumor
Monoclonal antibodies are part of the therapeutic arsenal for eliminating cancer cells. Some make use of the immune system to act and belong to a class of treatment called ''immunotherapies.'' But how do these antibodies function within the tumor? And how can we hope to improve their efficacy? Using innovative in vivo imaging approaches, scientists from the Institut Pasteur and Inserm visualized in real time how anti-CD20 antibodies, used to treat B-cell lymphoma, guide the immune system to attack tumor cells. (2021-02-21)

Good cop, bad cop
Serendipitous observation leads to novel insight into how cancer-immune crosstalk can either promote or suppress tumour growth. Ultimately, this study's results may help develop novel cancer therapies as well as an assay to select patients for immunotherapy treatment. (2021-02-19)

Oil spill has long-term immunological effects in dolphins
A study published in Environmental Toxicology and Chemistry has found long-term impacts of the 2010 Deepwater Horizon oil spill in the northern Gulf of Mexico on bottlenose dolphins' immune function. (2021-02-18)

Genetics may play role in determining immunity to COVID-19
UC San Diego researchers report that individual immune response to SARS-CoV-2 may be limited by a set of variable genes that code for cell surface proteins essential for the adaptive immune system. The finding may help explain why COVID-19 immunity varies by individual. (2021-02-18)

Neoadjuvant combination immunotherapy improves outcomes for early stage non-small cell lung cancer
The first randomized Phase II clinical trial to report on single and combined neoadjuvant immune checkpoint inhibitor therapy in stage I-III non-small cell lung cancer (NSCLC) found combination therapy produced a significant clinical benefit. (2021-02-18)

Antibody response may drive COVID-19 outcomes
Researchers at the Ragon Institute of MGH, MIT and Harvard and Massachusetts General Hospital show that levels of specific antibodies developed in the immune response may influence COVID-19 outcomes in both children and adults. (2021-02-18)

Immune system protects children from severe COVID-19
Children are protected from severe COVID-19 because their innate immune system is quick to attack the virus, a new study has found. (2021-02-17)

Mimicking a chronic immune response changes the brain
Abnormal production of Inflammatory cytokines by the immune system is responsible for a host of autoimmune disorders. One important cytokine is IL-17A, which is also involved in neurological diseases. Researchers at Tsukuba University in Japan made a mouse model of chronically high IL-17A and to study its effect on the brain. They show that it leads to reduced activity and density of microglia in the brain's hippocampus, but no obvious memory deficits. (2021-02-17)

Cosmetic laser may boost effectiveness of certain anti-cancer therapies
In mice treated with cancer immunotherapy, shining a cosmetic laser on a tumor boosted the therapy's effectiveness. The strategy stimulated the immune system to attack nonmutated proteins on the tumor. The findings may help investigators make cancer immunotherapy effective against currently incurable cancers. (2021-02-17)

Immunosuppressive cell and cytokine response linked to bone nonunion
An abnormal suppression of the immune system linked to the onset of numerous diseases has been associated with poor functional regeneration of traumatic bone injuries. The discovery could guide a path for predicting which trauma patients may are less likely to respond to treatment. (2021-02-17)

Asthma may heighten flu risk and cause dangerous mutations
A subtype of asthma in adults may cause higher susceptibility to influenza and could result in dangerous flu mutations. University of Queensland-led animal studies have found that paucigranulocytic asthma (PGA) - a non-allergic form of the condition - allows the flu virus to flourish in greater numbers in sufferers. (2021-02-16)

First test for all known human coronaviruses, including new SARS-CoV-2 variants
Scientists at the Center for Infection and Immunity (CII) at Columbia University Mailman School of Public Health and SunYat-Sen University in China have set the stage for the development of highly sensitive antibody tests for infection with all known human coronaviruses, including new variants of SARS-CoV-2. These tests should also allow differentiation of immune responses due to infection and vaccination. The research is published in Communications Biology, a Nature journal. (2021-02-16)

Researchers solve riddle of plant immune system
How do plants build resilience? An international research team led by the University of Göttingen studied the molecular mechanisms of the plant immune system. They were able to show a connection between a relatively unknown gene and resistance to pathogens. The results of the study were published in the journal The Plant Cell. (2021-02-16)

Antibody-based COVID-19 treatments work best in concert with immune cells
Antibody-based drugs have been authorized for emergency use in COVID-19 patients by the Food and Drug Administration. Researchers at Washington University School of Medicine in St. Louis have discovered that the ability to interact with other elements of the immune system is an indispensable part of the effectiveness of such antibodies. The findings could help improve the design of the next generation of antibody-based COVID-19 drugs. (2021-02-16)

Suppressive immune cells' metabolic vulnerability may be targeted for cancer immunotherapy
A Ludwig Cancer Research study has identified a novel mechanism by which a type of cancer immunotherapy known as CTLA-4 blockade can disable suppressive immune cells to aid the destruction of certain tumors. (2021-02-16)

Zika vaccine candidate shows promise in phase I trial
The Zika virus candidate, Ad26.ZIKV.001, a replication-incompetent human adenovirus serotype 26 (ad26) vector showed promising safety and immunogenicity in a phase I clinical trial. Researchers say the vaccine warrants further development should the need reemerge. The findings are published in Annals of Internal Medicine. (2021-02-15)

Let the immune cell see the virus: Scientists discover unique way to target common virus
Scientists at Cardiff University have discovered a unique way to target a common virus that affects one in 200 newborn babies in the UK but for which there is only limited treatments available. (2021-02-15)

New insight into antibody-induced protective immunity to COVID-19
Researchers at the Ragon Institute of MGH, MIT and Harvard and the Brigham and Women's Hospital collaborate with SpaceX to identify humoral immune features which may track with lasting protection against SARS-CoV-2. (2021-02-15)

To improve immunotherapy, researchers look to shift immune cells' access to sugar
New research from Memorial Sloan Kettering scientists suggests that a way to improve immunotherapy is by altering immune cells' access to sugar. (2021-02-15)

Immunotherapy -- targeted drug combination improves survival in advanced kidney cancer
Patients with advanced kidney cancer, who received a targeted drug combined with a checkpoint-blocker immunotherapy agent had longer survival than patients treated with the standard targeted drug, said an investigator from Dana-Farber Cancer Institute, reporting results from a phase 3 clinical trial. (2021-02-13)

T cells depressed
In chronic infections, the immune system can become exhausted. Ludwig-Maximilians-Universitaet (LMU) in Munich researchers have looked into how this works. (2021-02-12)

New study identifies the main genetic causes of autoimmune Addison's disease
Scientists from the University of Bergen (Norway) and Karolinska Institutet (Sweden) have discovered the genes involved in autoimmune Addison's disease. (2021-02-12)

Antitumoral effects of LXR activation
Tumor cells are able to avoid the attack of the immune system through several mechanisms. For instance, these can secrete factors that turn macrophages -cells in the immune system- into dual action agents that contribute to the tumor progress and will protect it from immune body defences: these become, thus, the tumor-associated macrophages (TAMs). (2021-02-12)

Sweet coating for sour bones
Scientists invent a bioactive coating to improve the function of titanium implants in osteoporotic bones. This coating, comprising a chemically-modified glycan, can sequentially turn on and off inflammation on titanium surface upon implantation. This modulation stimulates the body's immune system to promote bone healing in an effective and safe way, without addition of bone-forming genes or drugs, according to the data from a rat osteoporotic model. (2021-02-12)

Get a load of ZIF! Better delivery of cancer immunotherapy
An antibody loaded onto a porous metal organic framework is released by the acidic environment that surrounds tumors, avoiding the adverse effects of administering the antibody alone. (2021-02-11)

Aggressive brain tumor mapped in genetic, molecular detail
A new study led by Washington University School of Medicine in St. Louis has revealed a detailed map of the genes, proteins, infiltrating cells and signaling pathways that play key roles in driving glioblastoma. The study, of 99 tumors from patients, is the largest and most detailed schematic of this deadly brain tumor. (2021-02-11)

SRC-3 is a novel regulator of human immune T regulatory cells
SRC-3, a prognostic marker for aggressive human breast and other cancers, also regulates human immune T regulatory cells (Tregs), which are involved in fighting cancer. (2021-02-11)

How research on chronic illnesses will improve COVID-19 treatment
A new paper in Oxford Open Immunology, published by Oxford University Press, examines prior findings in the field of neuroimmunology that suggest potential treatment strategies for patients suffering long-term symptoms from COVID-19. (2021-02-10)

Why Black men's prostate cancer may be more responsive to immunotherapy
Black men die more often of prostate cancer yet have greater survival benefits from immunotherapy treatment. A new study discovered the reason appears to be an increase of a surprising type of immune cell in the tumor. The findings could lead to immune-based precision medicine treatment for men of all races with localized aggressive and advanced prostate cancer. (2021-02-10)

Smectite promotes probiotic biofilm formation in gut for cancer immunotherapy
Orally administrating probiotics is ineffective due to the poor inhabitation of exogenous bacteria in host intestines. Chinese scientists report that smectite, a type of mineral clay and classical anti-diarrhoea drug, can promote the expansion of probiotics in the murine gut that subsequently elicits anti-tumor immune responses. Their findings suggest a novel approach to specifically enrich probiotics in the body, with high translational potential for cancer immunotherapy. (2021-02-10)

Response to cancer immunotherapy may be affected by genes we carry from birth
For all their importance as a breakthrough treatment, the cancer immunotherapies known as checkpoint inhibitors still only benefit a small minority of patients, perhaps 15 percent across different types of cancer. Moreover, doctors cannot accurately predict which of their patients will respond. (2021-02-10)

Earliest signs of an immune response found in developing embryos
Researchers at the Centre for Genomic Regulation reveal that newly formed embryos clear dying cells to maximise their chances of survival. It is the earliest display of an innate immune response found in vertebrate animals to date. The findings may aid future efforts to understand why some embryos fail to form in the earliest stages of development, and lead to new clinical efforts in treating infertility or early miscarriages. (2021-02-10)

Scientists uncover four new facts about early SARS-CoV-2 infections
University of Minnesota Medical School researchers studied SARS-CoV-2 infections at individual cellular levels and made four major discoveries about the virus, including one that validates the effectiveness of remdesivir - an FDA-approved antiviral drug - as a form of treatment for severe COVID-19 disease. (2021-02-10)

Substance in the blood of pregnant women fights pathological immune reaction
Scientists studied the effect of trophoblastic β1-glycoprotein in the blood of pregnant women on pro-inflammatory immune cells. Thanks to trophoblastic β1-glycoprotein, a woman's body does not adversely react to the fetus and supports its normal development until birth. It turned out that trophoblastic β1-glycoproteins also suppressed the development of pro-inflammatory lymphocytes and reduced their activity. (2021-02-10)

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