Articles tagged with Erythrocytes
Researchers at Hiroshima University discovered that pathogenic mycobacteria, such as Mycobacterium tuberculosis, attach to and multiply within human red blood cells. This interaction may play a role in the spread of lung diseases like tuberculosis.
Scientists have successfully modified red blood cells to transport viral agents that trigger the immune system against SARS-CoV-2. The new method, described in PLOS ONE, shows promise as a safe and effective vaccine delivery platform with potential for rapid adaptation to emerging variants.
A new form of drug delivery microparticle mimics the properties of a red blood cell, enabling controlled release of drugs and targeting specific destinations. The goal is to bypass the body's filtration systems, allowing for improved efficacy and reduced negative side effects.
Scientists at Hokkaido University developed a prototype sensor to rapidly measure adenosine triphosphate (ATP) and lactate levels in blood samples. The sensor's sensitivity allows for the accurate detection of these molecules, enabling rapid assessment of disease severity.
A world-first study found that space travel causes a 54% increase in red blood cell destruction, leading to severe anemia upon return to Earth. Astronauts experienced prolonged effects of anemia even after months of recovery.
A new imaging technique can detect early signs of blood trauma in red blood cells, which could aid in the development of markers to prevent damage. The technique, developed by researchers at Shibaura Institute of Technology and Griffith University, uses high-speed cameras to visualize changes in RBC shape under stress.
A new study published in PNAS has identified 33 metabolic compounds associated with dementia, which could aid in diagnosis and treatment. The researchers found that levels of these metabolites differed significantly between patients with dementia and healthy elderly individuals.
Researchers have developed a dye-free method to visualize blood flow in the brain, allowing for detailed mapping of small capillaries and assessing blood flow rates. The technique has potential applications in understanding cardiovascular diseases, tumor growth, and targeted drug delivery.
Researchers found changes in erythrocyte morphology and nanoparticles on cell surfaces during radiation therapy, which may indicate treatment effectiveness or prognosis. The study suggests that analyzing these changes could lead to the development of a diagnostic method for assessing RT efficacy.
Researchers at Penn State identified a link between red blood cell flow and fluctuations in brain oxygenation. The study found that random flow rates through tiny blood vessels contribute to these changes, which may have implications for understanding neurodegenerative diseases.
Researchers have identified the VC1 gene as the source of faba bean's anti-nutrients vicine and convicine. This discovery enables the breeding of low-anti-nutrient varieties, improving food safety and sustainability. The study provides a crucial step towards a global switch to plant-based diets.
Researchers found that COVID-19 significantly changes the size and stiffness of red and white blood cells, which may contribute to impaired circulation, oxygen transport, and increased risk of vascular occlusions. These changes can last for months after an infection, explaining long COVID symptoms.
A new study found that a low Omega-3 Index is associated with increased risk of early death, comparable to the risk of smoking. The research used data from the Framingham Heart Study and suggested that biomarkers integrating lifestyle choices could help identify individuals at risk and inform treatment approaches.
Researchers have discovered a link between ADORA2B protein in red blood cells and age-related cognitive decline. The study found that mice lacking ADORA2B exhibited accelerated aging, including poor memory and hearing deficits.
Using lattice light sheet microscopy, researchers captured high-resolution videos of individual malaria parasites invading red blood cells, revealing key steps in the parasite life cycle. The study's findings may lead to new antimalarial therapies by targeting specific components of the parasite, potentially bypassing drug resistance.
Researchers found that SARS-CoV-2 infects immature red blood cells, leading to reduced oxygen levels and impaired immune response. The study also shows why dexamethasone has been an effective treatment for COVID-19 patients.
Researchers analyzed records from two large U.S. databases to examine the relationship between erythropoietin doses and hip fracture rates in patients with kidney failure. They found that fluctuations in EPO doses over time closely tracked average EPO dose used, highlighting a potential increased risk of hip fractures.
A new strategy combines AIEgen-mediated photodynamic therapy with Poly(I:C)-based immunotherapy to enhance anti-tumor immune responses. The system induces tumor cell death and stimulates cytokine release, demonstrating potential for preventing tumor recurrence and metastasis.
A new oral treatment, FTX-6058, has the potential to address the root cause of sickle cell disease by increasing fetal hemoglobin levels. The drug could be formulated into a daily tablet and has shown better results than current treatments in preclinical experiments.
Researchers at Yale University have developed a model where human red blood cells are rescued in circulation using combined liver and growth factor humanization. This breakthrough has the potential to treat diseases such as myelodysplastic syndrome, sickle cell disease, and malaria.
Researchers at Kobe University discovered that FGF23 produced by erythroblasts promotes the mobilization of hematopoietic stem cells into the peripheral blood, offering a new strategy for harvesting stem cells from bone marrow donors. This finding could help resolve issues with insufficient mobilization in around 10% of cases.
A large randomized clinical trial compared thresholds for blood transfusions in premature babies and found no advantage in survival or neurological impairment. The study, led by Dr. Rosemary Higgins of George Mason University, suggests that current guidelines for blood transfusions may not be optimal.
A National Institutes of Health-funded study found that providing a higher threshold of red cells offers no survival benefit for preterm infants and does not reduce neurological impairment. The study used data from 845 infants with varying hemoglobin thresholds to compare outcomes.
Researchers have engineered red blood cells to release therapeutic proteins in response to specific wavelengths of light, using a honey bee peptide. This innovative approach could provide a more effective and targeted way to deliver protein therapies, reducing the risk of side effects and improving treatment outcomes.
A team of researchers has developed biocompatible protocells that can generate nitric oxide gas, leading to blood vessel expansion. The synthetic cells are coated in red blood cell fragments and contain an enzyme that produces hydrogen peroxide, which is then converted into nitric oxide.
Researchers found that SARS-CoV-2 attacks red marrow, damaging endothelium and regulating cell migration. This can lead to loss of functional cells, organ failure, and increased risk of secondary infections. The study analyzed lung samples from 79 patients who died from COVID-19.
Researchers at HKU have identified a novel antiviral strategy for treating COVID-19, utilizing the metal-based compound ranitidine bismuth citrate (RBC) to suppress SARS-CoV-2 replication. RBC targets the viral helicase Nsp13, reducing viral loads by over 1,000-folds and mitigating symptoms.
Researchers have found a globular star cluster with 800 times less iron than the Sun and is three times more iron-poor than the previous record-holder. The study contradicts the standard picture of how these old star clusters formed in the early universe.
A new study investigates the relationship between red blood cell distribution width and mortality risk in hospitalized adults with SARS-CoV-2 infection. The findings suggest that red blood cell distribution width may be a useful marker for risk stratification of patients with COVID-19.
Red blood cells in people with Dantu blood variant have a higher surface tension that prevents Plasmodium falciparum from invading. This natural process could be imitated to prevent or reduce malaria infection.
Researchers successfully increased the catalytic activity of Rubisco in rice by transferring RbcS from C4 plant sorghum. This led to a 1.5-fold increase in catalytic rate and improved photosynthetic ability under high CO2 conditions. Further research is needed to apply this strategy to other major crops.
The study found that heme can be commandeered by activated protein C (APC), which can reduce the toxic effect of heme while also reducing the risk of clot formation in the bloodstream. This interaction may provide new insights into blood coagulation disorders and hemolytic diseases.
Researchers developed a neural network to assess stored blood quality, achieving 76.7% agreement with experts in identifying damaged red blood cells. The network outperformed expert predictions when trained using only storage duration.
Researchers have developed two new strategies to automate the assessment of stored red blood cell quality, matching and surpassing expert analysis. Trained machines can analyze vast quantities of images to accurately predict RBC degradation, eliminating human error and improving consistency.
A new vaccine platform technology called Erythrocyte-Driven Immune Targeting (EDIT) successfully slowed the growth of cancerous tumors in mice by delivering antigens to antigen-presenting cells in the spleen. The approach uses red blood cells as delivery vehicles, generating an immune response without the need for adjuvants.
A new study from Tokyo Medical and Dental University identified CD86 as a novel cell surface marker that enables accurate analysis of hematopoietic responses to biological stress. The researchers found that CD86-based analysis can detect early activation phases of erythropoiesis in the bone marrow within hours after toxin injection.
Researchers found that Tibetan antelopes permanently express a juvenile form of hemoglobin, which has higher oxygen affinity, allowing them to thrive at high altitudes. This adaptation enables the animals to sustain running speeds of over 70 km/h and travel long distances without oxygen deprivation.
Researchers have developed synthetic red blood cells that exhibit all the properties of natural ones, including flexibility and oxygen transport. These artificial cells can carry therapeutic cargoes, such as anticancer drugs or toxin sensors, and demonstrate potential in medical applications like cancer therapy and toxin biosensing.
Researchers at the University of Delaware have developed a method to detect red blood cell damage in real-time, which could improve patient safety during dialysis. The technique uses mechanical resistance to measure changes in blood conductivity caused by damaged red blood cells.
Researchers identified how the enzyme MOF orchestrates the HSC fate in erythropoiesis, revealing crucial role in regulating chromatin accessibility and gene expression. This discovery could lead to new therapeutic approaches for diseases such as leukemia or anemia.
Researchers discovered that malaria parasites can tick their own internal clocks, with 90% of genes showing rhythmic patterns. This internal metronome may help the parasite synchronize its escape from red blood cells and evade the human immune system.
A new subtype of myelodysplastic syndromes (MDS) has been proposed based on the presence of a genetic mutation, known as SF3B1. This subtype is characterized by ineffective production of red blood cells and may benefit from treatment with luspatercept.
Red blood cells deform and recover when passing through tiny channels, revealing a possible new method to diagnose diseases such as malaria. The researchers found that the shape recovery behavior depends on flow speed, viscosity, and elastic properties of the cell's outer membrane.
Researchers have developed a method to use ultrasound to insert a sugar molecule called trehalose into red blood cells, allowing them to last for years. This technique could increase the shelf life of blood donations from weeks to years.
Researchers have identified how a deadly malaria parasite controls its stickiness in red blood cells, evading the immune system. By targeting this mechanism, potentially more effective therapies may be developed to combat the disease.
Researchers created tiny biohybrid swimmers that can personalize drug delivery to treat tumors. The biohybrid swimmers, powered by genetically engineered E. coli MG1655 and red blood cell nanoerythrosomes, demonstrated a reduced immune response due to their nanoscale size.
A new microfluidics device has identified two super donors with long-lasting red blood cells, offering potential for improved transfusion safety. The study, published in Lab on a Chip, could benefit over 4.5 million patients requiring regular blood transfusions.
Researchers created 3D human capillaries to study how red blood cells navigate ultra-small blood vessels. Malaria-infected cells become stalled due to shape and motion changes, increasing risk of adherence and blockage.
Researchers have designed modified red blood cells that can circulate for several weeks and target specific infections or diseases like cancer and Alzheimer's. These 'super-human' cells use a sticky surface to attach to bacteria and release antibiotics exactly where needed.
A new study finds that transfusions using fresh red blood cells are no more beneficial than older red blood cells in reducing the risk of organ failure or death in critically ill children. The results indicate that current standard blood-bank practice of dispensing older red cells is just as safe and effective.
A large clinical trial has found that fresh red blood cell transfusions do not reduce the risk of organ failure or death in critically ill children. The study included 1,461 patients and showed similar outcomes between fresh and older red cells.
A study reveals that Group A Streptococcus produces a novel protein called S protein, which binds to red blood cells to evade the immune system. This mechanism increases bacterial virulence and decreases survival in infected mice.
A new technique called ELeCt uses drug-loaded nanoparticles bound to circulating red blood cells to inhibit lung cancer metastasis with tenfold greater success than free-floating nanoparticles. The research has shown improved survival rates and reduced side effects in mice with lung cancer, making it a promising clinical treatment.
Scientists have identified atypical immune B-cells that increase anti-PS antibody production associated with anaemia in malaria patients. These cells also develop and produce antibodies in uninfected individuals when exposed to broken red blood cell fragments.
Scientists at the University of Göttingen have identified an alternative erythropoietin receptor, CRLF3, which triggers protective effects in humans without stimulating red blood cell production. This discovery offers new hope for treating neurodegenerative diseases such as Alzheimer's and Parkinson's.
Researchers have discovered a new drug target for Myelodysplastic Syndrome (MDS) by targeting an earlier stage of progenitor cells. Blocking the CHRM4 protein receptor significantly improves blood cell production in MDS patients. Preclinical tests in mice show sustained therapeutic efficacy.
Researchers developed a novel method to measure mechanical fatigue's effect on human red blood cells, revealing that cyclic deformation causes faster deformability loss. The technique assesses static and cyclic mechanical deformation, providing insights into accumulated membrane damage and its relation to diseases.
A team of Brown University researchers developed a new computer model to simulate the way red blood cells become misshapen in sickle cell disease. The model can be used to quickly and inexpensively pre-screen new drug candidates, potentially identifying promising treatments for the genetic disorder that affects millions worldwide.
Researchers at Johns Hopkins Medicine developed a new mouse model that mimics the effects of red blood cell transfusions on human infants with necrotizing enterocolitis (NEC). The study found that severe anemia increases the risk of NEC after transfusion, and that free hemoglobin can trigger an immune response in the intestine.
Researchers at Pitt/UPMC are testing a technique called red cell exchange transfusion to prolong life and slow organ damage in sickle cell disease patients. The SCD-CARRE trial aims to determine whether red cell exchange can lower deaths and reduce hospitalizations.