Articles tagged with Blood Vessels
A new study in mice reveals that abdominal muscles used during normal movement can increase blood flow in the brain by creating ultrafast constrictions of major veins. The research suggests a previously underappreciated aspect of normal brain physiology, highlighting the connection between movement and blood flow.
Researchers at Tohoku University found that stimulating the vagus nerve after training improves long-term learning in mice, suggesting a previously underappreciated mechanism behind vagus nerve stimulation. The study reveals that rhythmic changes in brain blood vessels play a key role in supporting long-term learning.
The study found that LVIS stent-assisted coiling provided effective aneurysm occlusion while producing measurable hemodynamic changes and maintaining procedural safety. Treatment reduced blood-flow activity within the aneurysm, with sustained improvements at 6 months.
A new study identified functional noncoding variants in the TBX1 enhancer that contribute to tetralogy of Fallot. These variants reduce TBX1 expression, disrupt outflow tract vessel formation, and lead to reduced angiogenesis, vessel regression, and abnormal tight junction morphology.
This randomized clinical trial evaluates safety and efficacy of intra-arterial thrombectomy vs. medical management in patients with large-core infarcts after an acute ischemic stroke. The study found that endovascular treatment showed significant benefits in improving outcomes.
Researchers developed an artery-on-a-chip platform to predict ischemic stroke risk by replicating a patient's specific vascular structure and blood flow dynamics. The tool, called a 'physical twin,' reveals that three-dimensional vascular shape and local flow disturbances matter more than simple narrowing in predicting stroke risk.
A Chinese neurosurgical journal's study found that severe stenosis of major intracranial arteries increases the risk of cerebral infarction after revascularization surgery in moyamoya disease. Severe blockage was associated with postoperative infarctions, highlighting the importance of monitoring and mitigating this risk factor.
Researchers at the University of Zurich have developed epigenetic drugs that can reprogram perivascular fat cells to reduce inflammation and improve blood vessel health. By targeting specific gene-expression regulators, these drugs aim to prevent vascular damage in people with obesity and metabolic disease.
Researchers have made major steps toward solving the mystery of how brain aneurysms form by identifying key cell types and genetic pathways involved. The study's findings provide new insights into a clinical paradox: smaller aneurysms can still rupture, and offer opportunities for early intervention to prevent ruptures.
Researchers created a detailed atlas of human brain-vessel morphology, revealing subtle changes linked to stroke prognosis and suggesting that small-vessel features may help explain worse recovery outcomes. The atlas, MARVAL, provides a standardized tool for measuring the vascular network in large populations.
Researchers at UT MD Anderson Cancer Center have made significant advances in understanding cancer biology, developing AI-powered atlas of tertiary lymphoid structures as prognostic biomarkers, and uncovering drivers of resistance to KRAS inhibitors. Additionally, they have discovered a molecular pathway that drives stressed cells to b...
Adults with lower measured glomerular filtration rates had a higher risk of all-cause mortality, kidney failure, and major adverse cardiovascular events. Lower GFR values were also associated with increased hospitalization for heart failure and acute kidney injury.
A new study found that a simple angiogram scoring system can identify patients whose heart muscle is still alive even when a major artery has been completely blocked. This breakthrough could change how cardiac patients are treated and help doctors make faster, more informed decisions.
A new study published in the Chinese Neurosurgical Journal found that most basilar trunk artery aneurysms can be treated effectively using endovascular techniques, resulting in encouraging long-term recovery rates. However, larger aneurysms pose higher treatment risks and are associated with complications and poorer outcomes.
A Concordia-designed simulator models hemodynamics in reduced gravity environments, revealing key differences in blood flow and pressure patterns. The system successfully reproduced effective CPR on Earth and generated consistent blood flow under both normal and hypogravity conditions.
High-intensity interval training shows strongest vascular benefits in cardiovascular patients. HIIE consistently improves flow-mediated dilation and vasodilation, with combined high-intensity programs showing the largest estimated effects on endothelial function.
Researchers discovered that stress hormones trigger neutrophils to detach from blood vessel walls and travel to the heart, causing inflammation. Blocking these stress signals with beta blockers may prevent excessive inflammation and improve heart healing.
Researchers found that Adgrl2 plays a crucial role in building both brain synapses and blood vessels, with different cell types producing distinct versions of the protein. Removing Adgrl2 from endothelial cells caused blood vessels to become leaky and lose their integrity.
A new freeze-dried blood product called Thrombosomes has shown promise in treating traumatic brain injuries by reducing swelling and bleeding. The product, derived from platelets with trehalose preservation, has been tested on mice and found to be effective in stabilizing damaged blood vessels.
Researchers have mapped blood vessels in human adipose tissue with unprecedented detail, revealing that they are not only affected by disease but also play an active role in its processes. The study identifies unique cell types with mixed characteristics, suggesting a new approach to treating metabolic diseases.
A team led by Jiefu Li developed a new method to examine proteins lining the inside surface of blood vessels, revealing two proteins and pathways that play a role in opening and closing the blood-brain barrier. This discovery could help scientists understand how the barrier functions and develop better ways to deliver medicines for neu...
Extended low-dose apixaban effectively reduced symptomatic superficial vein thrombosis (SuVT) risk. Patients with enduring risk factors for SuVT benefited from this anticoagulation strategy.
Researchers have identified TIE2 as a crucial link between two signaling pathways that drive the growth of blood vessel abnormalities in the brain. Inhibiting TIE2 with a small drug called rebastinib may provide an endothelial cell-centered approach to prevent CCMs, which can cause brain hemorrhages and seizures.
A protein receptor, PAR1, plays a critical role in maintaining blood vessel structure. The receptor can trigger protective responses to counteract inflammation, potentially leading to new treatments for conditions like sepsis, heart attack, and stroke
MIT neuroscientists have found that two genetic mutations causing Rett syndrome compromise the structural integrity of developing blood vessels, leading to leaky vessels. Overexpression of miRNA-126-3p is responsible for the vascular defect, which can be rescued by reducing the miRNA's levels.
Scientists have discovered a mechanism that explains how exercise improves cognition by shoring up the brain's protective barrier. The study found that an exercise-induced liver protein strengthens the blood-brain barrier, reducing inflammation and cognitive decline associated with Alzheimer's disease.
The review outlines how vascular-immune crosstalk affects various diseases, revealing novel therapeutic opportunities. It highlights the shared embryonic origin of blood vessel cells and immune cells, as well as coordinated immune cell trafficking mechanisms.
Researchers developed an innovative noninvasive technique that combines ultrasound and photoacoustic imaging to capture images of both tissue and blood vessels. The technology has the potential to address current gaps in medical imaging, providing faster and more comprehensive imaging at meaningful depths.
Researchers discovered subtypes of chondrocytes that transform into bone-building cells, regulating bone growth and vascularization. The study found that these cells secrete Thbs4 to induce blood vessel formation, shedding insights for treating defective angiogenesis.
A new study uses ultrasound to detect vascular complications from cosmetic fillers, such as absent blood flow to perforator vessels. Clinicians can now target exact areas for treatment, reducing the need for blind injections and minimizing complications like blindness and stroke.
Researchers have identified connexin 43 as a vital protein for endothelial repair in mice, which could lead to new therapies to improve recovery and reduce complications after vascular surgery. The study found that the protein helps blood vessels recover after damage, suggesting it could be a target for treatments.
Research found a strong link between living in deprived areas and poorer cognitive performance, with damage to brain small blood vessels and modifiable lifestyle factors contributing to the effect. Lifestyle habits such as exercise and sleep management also play a crucial role in dementia prevention.
A new study by USC researchers reveals that short-term 'dynamic instability' in blood pressure is linked to loss of brain tissue and nerve cell injury in older adults. This phenomenon, where blood pressure fluctuates wildly from one heartbeat to the next, may be a key risk factor for brain shrinkage and neurodegeneration.
A new study from the University of Birmingham found that consuming flavanols can preserve blood vessel function in young healthy men during periods of uninterrupted sitting. The researchers tested whether high-flavanol cocoa could prevent FMD declines, and found significant protection against vascular dysfunction.
Researchers discovered how newly created neurons rely on blood flow to migrate through the brain. The study found that blood vessels act as physical 'scaffolds' and that blood flow influences migration speed, with higher speeds seen in regions with abundant blood flow.
Researchers have developed a miniaturized magnetic microcatheter called MagFlow that can safely navigate the smallest and most intricately branched arteries in a matter of seconds. This innovation eliminates concerns about device removal and opens up new treatment avenues for cardiovascular conditions.
A new drug-eluting balloon has been shown to match the outcomes of standard care for in-stent restenosis, offering a safer alternative for patients with multiple stent layers. The study's results suggest that patients with complex or multilayer ISR may benefit from sirolimus-eluting balloons as a viable treatment option.
A team of researchers has proposed a novel ultrathin flexible sensor inserted endovascularly to detect Type-I endoleaks with maximum rupture risk. The sensor is robust enough to withstand dynamic processes and exhibits long-term stability and functionality.
Researchers at Weill Cornell Medicine develop a new method to generate functional endothelial cells from adult tissue, potentially enabling vascular grafts and organ transplants. The approach involves using small molecules to trigger cell division without aging or losing function.
Research reveals that ovarian aging is not just about egg quality, but also the surrounding cells and tissues. The study found that eggs cluster in pockets surrounded by egg-free zones, which decline in density with age, influencing egg lifespan and maturation.
Akassoglou's research discovered that blood protein fibrin causes toxic immune reactions in the brain, leading to neurodegeneration and disease progression. Her new immunotherapy aims to neutralize these effects, protecting against Alzheimer's and other neurological conditions.
A new study found that pediatric athletes' cardiovascular systems adapt to increased fitness with abnormal changes, including increased cardiac mass, central blood pressure, arterial stiffness, and carotid intima-media thickness. These changes are not yet fully understood and may have long-term effects on cardiovascular health.
Researchers at USC have developed a groundbreaking brain imaging technique that reveals how tiny blood vessels in the brain pulse with each heartbeat, which may hold clues to aging and diseases like Alzheimer's. The method shows that microvascular pulsatility increases with age, especially in deep white matter, a region critical for co...
A multidisciplinary panel published in the Journal of Pediatrics advocates for accelerated diagnosis of familial hypercholesterolemia, a life-threatening genetic condition. Universal lipid screening is recommended to identify affected children at high risk of heart disease decades earlier than those without the condition.
Researchers at The University of Osaka have developed a minimally invasive method for recording brain activity through blood vessels, offering high-fidelity recordings without the risks associated with traditional invasive approaches. This breakthrough could transform the diagnosis and treatment of neurological conditions like epilepsy.
A new study from the University of Oklahoma has identified CD82 as a contributing factor to blood vessel leakage, which can initiate inflammation. The researchers found that lowering cholesterol levels with statins can strengthen vessel walls and reduce leakage.
Stem cell transplantation has been shown to reverse stroke damage in mice by regenerating neurons and restoring motor functions. The treatment also improved blood-brain barrier integrity, reduced inflammation, and promoted new blood vessel formation.
Researchers developed a novel biomaterial called elastin domain-derived protein (EDDP) that overcomes natural elastin limitations. EDDP promotes cell adhesion and growth, aiding tissue regeneration in damaged tissues like heart valves, blood vessels, or torn ligaments.
A new imaging approach has simplified retina exams by eliminating the need for mechanical focusing, making fundus cameras more accessible. The system uses a diffuser to capture 3D light information and digitally refocus images after they are taken, producing consistent resolution of about 7-10 line pairs per millimeter.
A new study using two-photon microscopy shows that brief interruptions in brain capillary flow can cause rapid drops in oxygen levels, potentially leading to tissue damage. The research found that even minor stalls can lead to significant hypoxia, highlighting the importance of uninterrupted blood flow to the brain.
Scientists discovered that human melanoma cancer cells behave like stem cells when forced through channels narrower than 10 micrometres, gaining traits to survive, spread, and form new tumours. Researchers created a biomedical device to simulate blood flow through narrow blood vessels, showing the mechanical pressure makes cancer cells...
A new study found that excessive visceral fat is linked to faster ageing of the heart, with a genetic predisposition to female-type fat in women potentially slowing heart ageing. Researchers also discovered that artificial intelligence analysis of images revealed signs of organ ageing, including tissue stiffness and inflammation.
A team of researchers created a 3D-bioprinted model of stenotic brain blood vessels to study the effects of abnormal flow patterns on endothelial cells. The model successfully replicated physiological conditions, including upregulation of inflammatory markers.
Researchers from FAU and the Sensing Institute created a detailed computer model of the mouse brain's vasculature, simulating how brain blood vessels respond to hemodynamics and vasodynamics. The model shows that transitional vessels play a critical role in regulating flow and protecting the brain during increased activity.
A novel 3D culture method enables self-organization of precursor cell types into functional liver organoids capable of producing essential clotting factors. The breakthrough advances organoid-based therapies, drug testing, and disease modeling for liver diseases, including hemophilia A.
Researchers discovered that PAR1 triggers a structural transformation in lymphatic vessels, making them more permeable to absorb excess fluid and immune cells. This finding has implications for the treatment of lung diseases and could lead to targeted therapies.
A study from The University of Osaka reveals nearly half of patients with extracranial arteriovenous malformations carry mutations in the RAS/RAF/MAPK signaling pathway. These mutations were linked to abnormal vascular morphology and were frequently detected in younger female patients.
Gene coexpression analysis reveals optimal markers of cell types and states, providing opportunities for developing novel biomarkers and targeted treatment strategies for glioma patients. Dr. Oldham's work tackles the reproducibility crisis in science, emphasizing data metadata standardization.
A study published in Chinese Neurosurgical Journal found that the Neuroform Atlas stent-assisted coiling procedure is safe and effective for treating intracranial aneurysms in arteries less than 2.5 mm in diameter, with favorable outcomes and low postoperative complication rates.
A new study found that gamma-linolenic acid (GLA) can directly relax constricted coronary arteries by blocking a key receptor. This discovery offers promising implications for preventing coronary spasms and angina. GLA's effects are comparable to omega-3 fatty acids, challenging previous beliefs.