Articles tagged with Macrophages
Researchers found that stimulating the CB2 receptor in white blood cells weakens HIV-1 infection. Synthetic compounds may make current therapies more effective and provide protection against certain complications. The discovery holds promise for fighting other viral diseases.
Researchers found that excess tumor necrosis factor production initially kills TB pathogens, but later encourages their growth. Certain drug combinations can reverse this effect, potentially reverting hypersusceptibility to hyperresistance.
A study published in Cell Metabolism suggests that targeting cholesterol metabolism in the eye may prevent severe age-related macular degeneration. Researchers found that macrophages play a key role in clearing cholesterol from the eye, and that with aging, these cells become less efficient at this task.
Researchers found that age-related macular degeneration shares a common link with atherosclerosis due to impaired cholesterol efflux in macrophages. The study suggests that cholesterol-lowering eye drops or other medications could prevent vision loss caused by macular degeneration.
Two studies by Weill Cornell Medicine researchers propose new treatments for beta-thalassemia, HFE-related hemochromatosis, and polycythemia vera. The discovery reveals a crucial role of macrophages in regulating iron production and red blood cell production, offering new avenues for therapy.
A team of medical researchers has identified a specific microRNA, miR-342-5p, that plays a key role in promoting inflammation in atherosclerosis. Inhibiting this microRNA has been shown to retard the progression of the disease in animal models.
Researchers have found that macrophages help produce and eliminate red blood cells, which could lead to novel therapies for diseases affecting red blood cell balance. The study also showed that eliminating certain macrophages can normalize abnormal red blood cell counts in conditions like polycythemia vera.
A potentially lethal fungal infection can anticipate and disarm the host's immune attack by sequestering copper, shutting down copper pumps in macrophages. This study opens new options for drug development to target the fungus's detoxification machinery.
Penn researchers create a protein 'passport' that allows nanoparticles to bypass the immune system, facilitating targeted drug delivery and implant device functionality. The innovative approach could improve treatment efficacy by reducing inflammation and prolonging nanoparticle retention.
Researchers found that vitamin D3 and omega-3 fatty acids improved the immune system's ability to clear amyloid plaques from the brain. The study identified key genes and signaling networks regulated by these substances, which may help control inflammation and improve plaque clearance.
Researchers discovered a signaling pathway in macrophages that detects escaping bacteria and activates an enzyme to trigger self-destruction, protecting against lethal infections. The caspase-11 detection pathway protects mice from infection with Burkholderia species, including the potentially deadly B. pseudomallei.
A new study published in The American Journal of Pathology found that topical application of simvastatin significantly accelerates wound healing in diabetic mice by increasing angiogenesis and lymphangiogenesis. This is attributed to the increased number of infiltrating macrophages producing VEGF-C, suggesting a simple strategy with po...
Researchers at Scripps Research Institute have discovered new selective inhibitors of diacylglycerol lipases (DAGL), enzymes involved in making 2-AG, a key cannabinoid. Early tests suggest these compounds may also reduce pro-inflammatory molecules linked to rheumatoid arthritis, potentially leading to new therapeutic approaches.
A study published in The Journal of Cell Biology identifies a motor protein that helps HIV replicate in macrophages. KIF3A drives the virus along microtubules, facilitating its release from these cells. Inhibiting KIF3A may provide a new strategy for combating HIV.
A recent study has revealed the existence of a rare sub-group of activated immune cells that act as bodyguards to protect stem cells from premature differentiation. These macrophage cells secrete prostaglandins, which delay differentiation and preserve the youthful state of the stem cells.
Scientists at the University of Maryland School of Medicine created a stem cell model for Gaucher disease, allowing them to test potential therapies in a dish. The study uses genetically similar stem cells that react to drugs like patient cells, accelerating drug discovery and bringing hope to patients.
Researchers found that high-saturated fat diets increase endothelial lipase levels, associated with atherosclerosis, while omega-3 polyunsaturated fats lower these levels. This discovery may help explain why certain diabetes drugs raise heart risks and provides a new link between diet and cardiovascular disease.
Researchers discovered that influencing macrophage cells after injury can increase nerve regeneration rates by up to 20 times. The technique uses interleukin-4 cytokine to convert macrophages into a 'pro-healing' phenotype, promoting natural repair mechanisms.
Research reveals that activated macrophages accumulate triglycerides to support their function, leading to increased pathogen destruction. This finding provides new insights into the development of atherosclerosis and potential approaches to slowing its progression.
Researchers have upended assumptions on how high cholesterol leads to inflammation and atherosclerosis. Desmosterol, a precursor to cholesterol, has been found to suppress inflammatory response genes and regulate cholesterol balance.
A new study reveals the immune system and inflammation may play a significant role in Lou Gehrig's disease, specifically targeting motor neurons for clean-up by macrophages. Resolvin D1, an omega-3 fatty acid derivative, was found to curb inflammation and block harmful proteins, offering a potential new approach to treating ALS.
Researchers discovered that the Notch pathway contributes to the development of rheumatoid arthritis by influencing the differentiation and function of inflammatory macrophages. The study also shows that drugs under development for cancer could potentially be used to treat RA.
Researchers used video microscopy and mathematical modelling to challenge common assumptions about Salmonella infection. They found that macrophage infection rates are lower than previously thought, but infected cells can still be reinfected by other bacteria.
Activated CD14+Trem-1+iNOS+ intestinal macrophages increase NO production, leading to enhanced intestinal permeability and bacterial product translocation. This upregulation contributes to the development of decompensated liver cirrhosis.
A new study published in Nature has disproved the theory that pigeons' navigation skills are linked to iron-rich nerve cells in their beaks. Macrophages, specialized white blood cells, were found to contain tiny balls of iron instead, contradicting earlier research.
Researchers discovered that macrophages produce hydrogen peroxide, which activates the temperature sensor TRPM2 at normal body temperature. This mechanism enhances phagocytic activity and may lead to new treatment strategies for infection.
A major study published in the Journal of Clinical Investigation has identified a method to stop bladder cancer from metastasizing to the lungs. The study found that adding the protein RhoGDI2 to tumors reduces versican production, blocking the ability of cancer cells to grow in the lungs.
Researchers discovered that vitamin D3 activates key genes and cellular signaling networks to stimulate the immune system to clear amyloid-beta protein from the brain. The study provides new insights into the potential therapeutic benefits of vitamin D3 for Alzheimer's disease treatment.
Researchers found an enzyme called IDO helps clear cellular debris and promote tolerance to the body's own proteins and DNA. Blocking IDO can trigger autoimmune diseases like lupus in genetically programmed mice.
Researchers have discovered that toxins released by diseased brain cells trigger a vicious circle of immune system activation, leading to high levels of free radicals that attack healthy nerve cells. The discovery may lead to targeted therapies to slow down these diseases.
A team of researchers has discovered how the protein SAMHD1 protects immune cells from HIV by starving the virus of necessary building blocks. This finding could lead to more effective anti-HIV drugs and new insights into other viral infections.
Monocytes are extremely sensitive to reactive oxygen species (ROS), while macrophages and dendritic cells derived from monocytes are resistant due to their defective DNA repair mechanisms. This sensitivity may play a role in regulating the immune response and preventing excessive ROS production.
Five scientists have been awarded $2.25 million to develop innovative approaches to fighting cancer, including targeting macrophages and biomarkers. The grants aim to improve the prevention, diagnosis, and treatment of cancer.
Researchers found that vitamin D reduces inflammation and debris buildup in mouse eyes, improving vision. Vitamin D also triggers macrophages to change configuration, reducing damage and promoting clear vision. The study suggests a potential simple way to prevent age-related macular degeneration.
A new study by NYU Langone Medical Center researchers identified netrin-1 as a molecule that blocks the normal migration of macrophages out of arteries, causing them to accumulate and promote atherosclerosis. Genetically deleting netrin-1 can minimize atherosclerosis, reduce macrophage levels in plaque, and promote macrophage migration.
A team of researchers at UCSF has discovered that tiny immune cells called macrophages can switch on the brown fat in response to cold temperatures, inducing it to burn energy and produce heat. This finding suggests that the immune system plays a role in thermoregulation, potentially leading to new strategies for enhancing metabolism.
Hepcidin, a hormone that regulates iron levels, may be targeted to treat atherosclerosis. Suppressing hepcidin reduces iron levels in white blood cells, promoting reverse cholesterol transport and interfering with atherosclerosis progression.
Researchers have identified a type of immune cell, dendritic cells, that plays a protective role in atherosclerosis. The study found that classical dendritic cells help prevent the disease from progressing.
Researchers at Dalhousie University have discovered that a specific protein, S100A10, enables macrophages to break down tissue barriers and enter the tumor site, facilitating cancer cell growth and metastasis. This finding presents a potential target for blocking tumor growth by inhibiting S100A10 activity.
Researchers at Brigham and Women's Hospital have demonstrated the direct participation of IgE in atherogenesis in a mouse model. IgE stimulates macrophage and vascular smooth muscle cell apoptosis, leading to increased atherosclerotic lesions. Anti-IgE monoclonal antibodies may become a novel therapy for atherosclerosis.
Whitehead Institute researchers uncover a novel association between dectin-1 and galectin-3 in macrophages, enabling the immune system to discriminate between non-pathogenic and pathogenic fungi. This discovery may lead to the development of more effective antifungal drugs.
Researchers have uncovered a crucial survival response in the body's immune system to deadly anthrax infections. The study found that a key signaling molecule ATP is released from infected macrophages to alert other immune cells, triggering a complex pathway to combat the bacteria.
Researchers found that adult stem cells from the human nose can repair damaged brain tissue, while a cancer probe made of silica nanoparticles is effective at targeting tumors. Additionally, inhibiting a protein MRP4 could provide a new way to treat pulmonary hypertension.
Researchers at Case Western Reserve University discovered a genetic factor that regulates obesity-induced inflammation contributing to chronic health problems. By controlling levels of Kruppel-like factor 4 (KLF4) in macrophages, they may develop a novel treatment for obesity and its complications such as diabetes and heart disease.
Researchers found that cytoskeletal components regulate CD36 protein movement on the cell surface, promoting receptor clustering. This study may lead to a better understanding of receptor organization and its impact on cell signaling, which could aid in the development of new drugs.
A new study has found that macrophages have a seven-cell uptake threshold, governing the healing process. The researchers also discovered substances informing cells on tissue repair rates and accelerating macrophage transition to immune organs.
Scientists have discovered that HIV uses the molecule rNTP to replicate inside macrophages, allowing it to evade the immune system. By targeting this molecule, researchers may be able to develop new drugs to stop the virus in its hiding spot within the human immune system.
Researchers at Imperial College London have identified a protein called IRF5 that acts as a molecular switch controlling whether macrophages promote or inhibit inflammation. Blocking IRF5 production may treat autoimmune diseases like rheumatoid arthritis and inflammatory bowel disease.
Immune cells called macrophages infiltrate mouse retina after eye injury and dampen inflammation, protecting retinal ganglion cells from death. Macrophage arrival also awakens dormant neural progenitor cells.
A new study shows that protein HRG activates specific immune cells to inhibit tumor growth and metastasis. HRG enhances chemotherapy effects and transforms inflammatory cells from promoting to inhibiting tumor growth.
Scientists at Virginia Tech have discovered key molecular events in the immune system that contribute to inflammatory bowel disease. The study identifies peroxisome proliferator-activated receptor-gamma as a crucial regulator of inflammation and offers potential targets for repurposed drugs and naturally occurring compounds.
Researchers have described the first functioning 'lipidome' of a mouse macrophage, a white blood cell, providing new insights into how lipids interact and change over time in response to bacterial stimuli. The study sheds light on the crucial role of lipid molecules in inflammation and disease.
A study published in Cell Metabolism found that a protein called Angiopoietin-like protein 4 (Angptl4) protects against the severe inflammatory response caused by high levels of saturated fat. Mice deficient in this protein showed massive lymph node expansion and died after consuming a diet high in saturated fats.
Scientists identify specific receptors, TLR-2 and dectin-1, that can be targeted to stop damage while promoting nerve cell growth after a spinal cord injury. An experimental compound was found to activate the TLR-2 receptor alone, enhancing axon growth without causing cell death.
Researchers discovered that FoxO1, a multi-tasking protein, promotes an inflammatory response in macrophages, leading to insulin resistance and diabetes. Conversely, it generates a negative feedback loop to limit damage from excessive inflammation.
Researchers discovered that Maf protein promotes osteoblast differentiation in mice, reducing bone formation and increasing fat cell generation with age. Additionally, studies found defective immune cells in patients with type 1 diabetes and suggested these cells could be a viable target for treatment.
Researchers at UC San Diego School of Medicine identified a molecular mechanism making omega-3 fatty acids effective against chronic inflammation and insulin resistance in diabetes. Omega-3 fatty acids activate GPR120 receptor on macrophages, resulting in anti-inflammatory effects and improved insulin sensitivity.
Researchers at the University of Alberta have discovered a crucial mechanism for fighting infections, revealing that an amino acid called arginine is essential for immune function. The study's findings could have significant implications for people in third world countries with limited access to nutrition.
A team of UC San Diego researchers has created a novel map of lipid locations in a single cell, providing insights into how lipids influence disease processes. The study identified over 220 individual molecular lipid species and found that numerous lipids change in abundance once a macrophage becomes active.
Researchers found that sulfasalazine enhances the body's ability to clear fungal debris from the lungs, reducing inflammation and promoting better lung function. The study offers a new avenue for research on Pneumocystis pneumonia and may lead to improved treatment options for patients with weakened immune systems.