Articles tagged with Erythrocytes
Researchers at Lund University have identified a mechanism by which heme, released from damaged red blood cells, activates an inflammatory response. The kallikrein-kinin system pathway was found to be involved, leading to increased permeability and fluid leakage in surrounding tissues.
Researchers create engineered extracellular vesicles from red blood cell lipids, evading immune cells and targeting cancer cells. The technology offers flexibility in cargo loading and packaging, enabling delivery of genetic material, proteins, and whole viruses.
Research reveals birds can harness lactate to rapidly resurrect blood function, outperforming mammals. Lactate enables bird RBCs to convert methaemoglobin back to haemoglobin three times faster than mammalian RBCs.
Scientists at Kaunas University of Technology discovered that low-frequency ultrasound can dissociate erythrocyte aggregates into single cells, decreasing blood viscosity. This effect may improve oxygen exchange and support treatment of cardiovascular diseases, Alzheimer's disease, and diabetes.
A study found that ultra-endurance running damages red blood cells, reducing their ability to carry oxygen and nutrients. The damage accelerates the aging and breakdown of these cells, with longer races leading to greater damage.
Researchers have created a comprehensive map of the DNA sequences that control gene expression in human cells, identifying 2.37 million potential regulatory elements. This registry reveals previously unrecognized classes of elements and illuminates how noncoding genetic variation contributes to cell type-specific traits.
Scientists develop a revolutionary 'blood on demand' technology that can preserve red blood cells for extended periods, reducing thawing and washing times. This innovation has the potential to transform emergency medicine and provide a reliable blood supply in crisis situations.
Researchers at University of Pennsylvania discover red blood cells contribute to clot contraction, shrinking and stabilizing blood clots. The finding opens door to new strategies for studying and treating clotting disorders, such as excessive bleeding or dangerous clots like those seen in strokes.
Researchers at the University of Konstanz and Queen Mary University of London have made a significant breakthrough in artificial blood production by identifying the molecular signal CXCL12 that triggers the expulsion of the nucleus in red blood cells. This finding could lead to more efficient artificial blood production and has far-rea...
Researchers have found a promising new method for gene therapy by bringing dormant genes closer to enhancer switches on the DNA. This 'delete-to-recruit' strategy has potential for treating genetic diseases such as sickle cell disease and beta-thalassemia, offering an alternative to expensive current treatments.
A new study at Stellenbosch University found that blocking the enzymes involved in glycolysis could cut off the malaria parasite's primary energy source and kill it. This approach has shown promise for developing new malaria drugs, particularly against resistant parasites.
A study analyzing Klimt's The Kiss reveals that the painting's red discs represent vital biological functions and psychological intensity. The research also uncovers historical links between the artist and medical science, suggesting deliberate incorporation of menstrual blood as a central motif.
A study by Pusan National University uncovers the impact of nanoplastic exposure on red blood cell maturation in zebrafish embryos. Exposure to polystyrene nanoparticles disrupts normal blood cell development, leading to an increase in immature RBCs and a decrease in mature RBCs.
A new method of biometric authentication has been developed using hyperspectral imaging and AI to identify individuals through the unique patterns in their blood vessels on the palm of their hand. The technology shows great promise for secure personal identification and could potentially be used as a key to unlock homes.
Researchers at UCSF have discovered that human lung tissue contains hematopoietic stem cells (HSCs) capable of producing red blood cells, platelets, and immune cells. The finding suggests the lungs could be a potent source for life-saving stem cell transplants, particularly for patients with leukemia.
A new study published in Annals of Neurology found that lower concentrations of vitamin B12 in healthy, older adults led to signs of neurological and cognitive deficiency. These individuals showed slower processing speeds, brain lesions, and delayed responses to visual stimuli compared to those with higher B12 levels.
The Terasaki Institute for Biomedical Innovation has announced the recipients of its inaugural Keith Terasaki Mid-Career Innovation Award. Dr. Liangfang Zhang and Dr. Aydogan Ozcan were recognized for their innovative approaches to translating groundbreaking research into real-world impact.
A new gene-editing tool enables precise study of variable proteins that allow malaria parasites to stick to red blood cells and evade the immune system. The study introduces a platform to explore how malaria causes disease and identifies new proteins involved in the cytoadhesion process.
Researchers at St. Jude Children's Research Hospital identified a key role for glutamine in red blood cell development and disease. Glutamine metabolism plays a critical role in removing toxic byproducts, such as ammonium, that can accumulate during heme production.
A study by Kumamoto University researchers reveals that ApoE plays a crucial role in promoting hematopoietic stem cells to produce more red blood cells in response to acute anemia. This mechanism differs from the previously known pathway and may pave the way for new treatments for patients with severe anemia.
Red blood cells undergo a regulated process of removal to prevent premature ageing and potential health issues. The study highlights the role of proteins in regulating this process, paving the way for novel therapeutics and early diagnostics for anaemia.
A novel application of repurposed COVID-19 rapid antigen tests combines lateral flow assays with machine learning to evaluate coagulation status in cardiovascular care. The approach enables clinicians to perform immediate and accurate anticoagulant dosing adjustments using existing resources.
Researchers discovered a new small molecule, SR-18292, that increases fetal hemoglobin production and reduces sickled red blood cells in mice with sickle cell disease. The study suggests that combining SR-18292 with hydroxyurea could provide a vital new treatment option for patients who don't respond well to traditional treatments.
Researchers have identified the spleen as a critical organ in cryptic malaria infections, where over 95% of Plasmodium vivax biomass is stored. Extracellular vesicles facilitate the parasite's adherence to spleen cells, enabling its survival and evasion of immune responses.
Scientists at DTU and Lund University have found new enzymes that can remove both the A and B blood antigens and their blocking sugars, enabling the production of universal donor blood. This breakthrough has the potential to reduce logistics and costs associated with storing four different blood types.
A recent study has identified a key component of the malaria parasite's invasion mechanism, revealing that it binds to a specific sugar called sialic acid on red blood cell surfaces. This discovery provides new insights into the parasite's adaptation to humans and offers potential targets for vaccine and drug development.
A new approach enables scientists to measure entropy production at the nanoscale, shedding light on energy efficiency and metabolic processes in living systems. The study uses colloidal particles to measure fluctuations in the red blood cell membrane and apply minuscule forces to analyze heat flow.
A low-frequency ultrasonic device has been developed to quickly reduce blood pressure and activate blood gas exchange in the pulmonary system. This technology uses a higher radial mode of vibration, increasing acoustic signal penetration and reducing scattered signals.
Researchers at Kaunas University of Technology found that low-frequency ultrasound influences blood parameters, improving oxygen saturation and lowering blood pressure. The study used artificial intelligence to analyze 300 blood samples, revealing the potential for non-pharmaceutical treatment to improve oxygen circulation.
Researchers identify microbial enzyme bilirubin reductase that converts bilirubin into urobilinogen, causing urine's yellow color. The discovery sheds light on the gut microbiome's role in ailments like jaundice and IBD.
Mount Sinai researchers have found that testosterone treatment is safer than previously reported, with a smaller degree of change in hematocrit levels. The study, involving over 6,670 transmasculine patients, suggests that providers can feel more comfortable prescribing testosterone as part of gender-affirming hormone therapy.
A recent study published in the Journal of Investigative Dermatology has revealed that hemoglobin is present in the epidermis, the outermost layer of our skin. This discovery adds a new facet to understanding the skin's defense mechanisms against aging and cancer.
A randomized controlled trial suggests that a more liberal approach to red blood cell transfusions for heart attack patients with anemia may benefit outcomes without significant risk. The study found no statistically significant difference between two transfusion strategies, but results suggest a possible benefit of liberal transfusions.
Researchers discovered a malaria protein, PfAP2-P, that plays a key regulatory role in immune evasion and parasite development. This protein acts as an activator of proteins required for the parasite to exit infected red blood cells and invade new ones.
Researchers conducted a randomized trial in Canadian ICUs, finding that switching to small-volume blood collection tubes lowered red blood cell transfusion rates. The study suggests this change may improve patient outcomes and reduce the need for transfusions.
Red blood cell transfusions were common in ICU patients globally, with overlapping reasons for use despite differing clinical contexts. The three most common triggers for transfusion (hypotension, tachycardia, hemodynamic instability) were largely consistent across regions.
A new malaria vaccine candidate has shown promising results in a cohort of Tanzanian infants, with substantial anti-RH5 immune responses achieved safely through vaccination. The vaccine targets the RH5 protein used by the malaria pathogen to invade red blood cells, providing a second line of defense against disease.
Researchers developed an innovative imaging approach using two-photon microscopy to analyze retinal microcirculation, revealing significant changes in blood flow that may indicate brain diseases. The study suggests that microcirculation in the retina could serve as a promising predictor of cerebrovascular diseases.
A study by Florida Atlantic University and Duke University reveals that the malaria parasite's biological clock is 'in sync' with its human host's circadian clock. The researchers discovered a 'coupling' mechanism between the parasite and its host, which could lead to new treatments for this deadly disease.
Researchers found that malaria parasites synchronize their gene expression with the host's internal clock, repeating every 24 hours. The study reveals a potential new target for anti-malarial drugs by 'jet-lagging' the parasites' clocks.
Researchers have developed a simple blood test that can diagnose De Vivo disease, a rare and disabling neurological disorder. The test, called METAglut1, has a high sensitivity and specificity, allowing for accurate diagnosis in a short amount of time.
A team of researchers is exploring the potential of HDAC inhibitors to treat sickle cell disease by reactivating the fetal hemoglobin gene. Early evidence suggests that panobinostat, a specific inhibitor, can increase fetal hemoglobin levels in red blood cells and mouse models.
A new high-speed two-photon microscope was developed with an unprecedented line scanning frequency of 400 kHz, achieving up to 10,000 frames per second. This allowed for precise observations of complex biological processes in living tissues, including calcium signal propagation and blood flow measurements.
Researchers have discovered ultra-thin metal-organic layers that prevent ice crystal formation in red blood cells during freezing and thawing. These nanolayers, made from metal-organic frameworks based on hafnium, show excellent cryoprotection at minimal concentrations, potentially leading to new and efficient cryoprotectants.
Scientists have identified Norn cells as the primary source of erythropoietin (Epo) in humans, a crucial hormone for red blood cell production. This breakthrough could lead to the development of new treatments for anemia and other conditions related to impaired Epo production.
Researchers have developed a non-invasive technique using laser speckle imaging to visualize microvasculature in donor hearts and detect abnormal blood flow. The method enables precise visualization of blood circulation, potentially identifying hearts suitable for transplantation.
Researchers have developed nanodiscs based on the cell membranes of human red blood cells, which can effectively neutralize bacterial toxins. These nanodiscs, called RBC-NDs, are biocompatible and non-toxic, making them potentially useful as nanovaccines.
Researchers have discovered that the enzyme COASY plays a critical role in regulating red blood cell production in the bone marrow. Vitamin B5 supplementation and another metabolite increased the maturation of red blood cells in patients with Myelodysplastic syndromes, offering new hope for alternative treatments.
Researchers discovered that bone marrow transplants can halt the development and progression of brain blood vessel disease in adults with sickle cell disease. The study found that receiving stem cell transplants led to positive changes in blood vessels, reducing the risk of stroke among patients with the condition.
Researchers developed a microfluidic device to model the spleen's filtration function in patients with sickle cell disease. The study found that low oxygen levels can cause the spleen's filters to become clogged, while boosting oxygen levels can unclog them, potentially explaining how blood transfusions help patients.
Researchers at the University of Tsukuba found that the Newtic1 protein plays a crucial role in limb regeneration by secreting TGFβ1 growth factors. This discovery sheds light on the regenerative abilities of adult newts and their potential as a model for regenerative medicine.
Researchers developed a model to simulate red blood cell destruction in high shear flows, revealing acceleration as a major factor. They recommend adding flow buffers to VADs to reduce hemolysis, aiming to improve hydraulic performance and patient outcomes.
A study of 15 transgender women found they exceeded the cardiopulmonary capacity and muscle strength of their cisgender peers even after years of hormone therapy. However, their performance was lower than that of cisgender men. The findings could inform policy on transgender women's sports participation.
Researchers developed a novel 3D microfluidic device to study complicated processes within the placenta, including placental malaria. The model demonstrates that CSA-binding infected erythrocytes add resistance to the simulated placental barrier for glucose perfusion and decrease glucose transfer across this barrier.
A combination of anemia and weak muscles in older people increases the risk of death by 64% for men and 117% for women. The two conditions together pose a significant risk, especially for elderly women, according to a study published in Archives of Gerontology and Geriatrics.
Thousands of people with long covid are traveling abroad for expensive, unproven treatments like apheresis and anti-clotting therapy. Experts question the safety and effectiveness of these treatments, citing inadequate consent forms and lack of evidence.
A nationwide study in Sweden found that receiving red blood cells from female donors does not increase the risk of death in transfused patients. The study controlled for lower haemoglobin levels in women's blood and found no difference in survival rates between male and female donors.
A new study published in Nutrients found that individuals with higher red blood cell DHA levels have a 49% lower risk of developing Alzheimer's disease. The study, conducted on 1,490 participants aged 65 and older, suggests that increasing dietary omega-3 DHA levels may slow the development of the disease.
Dr. Kenichi Miharada and his team received the grant to develop an in vitro red blood cell production method due to global blood shortage for transfusions. They have already established a semi-infinitely proliferating red blood cell source called immortalized human erythroblast cell line (ELLU cells), but face technical challenges.
The UCF-developed real-time blood monitor uses an optical fiber to assess blood status and can be inserted directly into heart-lung machines or catheters without withdrawing blood from patients. This device has been shown to save doctors critical time during life-or-death operations, particularly in surgeries on infants.