Articles tagged with Circulatory System
A new device inspired by fish's lateral line senses the pulse of lab-grown heart tissue, enabling real-time monitoring of hundreds of tests. This breakthrough could revolutionize drug screening and personalized medicine with more accurate human tissue simulations.
A large-scale study developed a predictive model for Lymph Node Metastasis (LNM) status in T1b gastric cancer using digital pathology and deep learning. The DL-T1 nomogram achieved an AUC of 0.910, indicating high accuracy in predicting LNM risk.
A new study published in JAMA found no significant difference between sodium bicarbonate and placebo in sustaining return of spontaneous circulation. The findings suggest that routine administration of sodium bicarbonate for patients with in-hospital cardiac arrest may not be necessary.
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 developed a simple blood-based assessment to evaluate high-density lipoprotein's (HDL) cholesterol removal capacity from blood vessel walls. The study linked low HDL function to high-risk coronary plaques, supporting the use of this method for predicting cardiovascular risk.
A Tulane University study found that being female is not a universal stroke risk factor for patients with atrial fibrillation (AFib), especially for those under 75. Women age 75 and older or with comorbidities have a higher stroke risk, suggesting a more personalized approach to prevention.
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.
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 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.
Researchers at Kyushu University developed a new mathematical model that simulates oxygen transport by red blood cells through tiny blood vessels and their delivery to surrounding tissues. The findings show that RBCs can naturally adjust the amount of oxygen released based on local requirements.
Researchers created an atlas detailing the development of brain blood vessels from birth to adulthood, revealing three distinct stages. The Lambada atlas provides a high-resolution map of vascular development, enabling researchers to explore the developing brain in 3D.
A new study from Tulane University found that women with high predicted cardiovascular risk face nearly double the risk of hip fracture. The association was stronger in women under 65, and higher cardiovascular risk was linked to fractures in weakened bones in major areas.
A new 4D digital heart model has been shown to improve patient outcomes in cardiac resynchronization therapy (CRT) for heart failure. The model, developed at the University of Calgary, enables personalized pacemaker placement, leading to a 10.8% increase in heart function compared to standard care.
Researchers have developed bioengineered extracellular vesicles with enhanced therapeutic functionality, which can precisely target injured cardiac tissue and deliver therapeutic cargos. These bioengineered EVs have shown promising results in preclinical models of myocardial infarction, heart failure, and pulmonary arterial hypertension.
Contemporary donation after circulatory death (DCD) donors are now at 44% of organ procurement organizations. DCD donations account for half of all deceased donors in the US, leading to increased reliance on these organs to maintain transplant access.
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.
Scientists have developed a novel computational framework for real-time, personalized heart rate variability monitoring. The framework provides robust, adaptive alerts and improves the accuracy of HRV analysis by excluding artifact-prone periods.
A new study suggests that AI can help doctors detect serious heart valve disease years earlier, potentially saving thousands of lives. The AI algorithm correctly identified 98% of patients with severe aortic stenosis and 94% of those with severe mitral regurgitation.
A research team at Tohoku University has made a groundbreaking discovery about the anatomy of lymph nodes, revealing new structures that challenge traditional ideas about immune system function. The findings have significant implications for understanding and treating conditions like lymphedema and cancer.
A new study from CU Anschutz researchers found that regular physical activity can significantly lower post-ablation atrial fibrillation recurrence risk. Adults who engaged in moderate exercise for 30 minutes three times a week had markedly lower rates of AF recurrence compared to those who were less active.
Researchers developed an AI tool called ONCO-ACS to predict the risk of secondary heart attacks in cancer patients after a heart attack. The tool combines cancer-related factors with standard clinical data to provide reliable information for doctors to balance treatment benefits and harms.
Researchers found that eosinophils suppress chordoma growth and induce cell death in tumor cells, suggesting them as a novel immunotherapeutic target. The study's findings provide new insight into the immune mechanisms underlying chordoma progression.
Researchers have developed a non-invasive method to estimate blood oxygen levels in heart failure patients using standard cardiac MRI. This breakthrough could spare thousands from undergoing risky tube procedures, allowing for safer and more frequent monitoring.
Researchers found a strong association between nitrogen dioxide levels and increased risk of cardiac arrest, with a 7% rise for every 10 micrograms per cubic metre increase. The study highlights the importance of considering environmental data in health forecasting systems.
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.
A new study reveals that sons born to mothers with type 1 diabetes show early signs of vascular dysfunction in their blood vessels, even before metabolic health is affected. The research suggests that this sex-specific effect could help clinicians assess risk and prevent cardiovascular disease earlier in life.
Exercise promotes angiogenesis and lymphangiogenesis through molecular signaling pathways, enhancing vascular function and immune response. This process offers potential interventions to combat age-related decline and disease, including cardiovascular diseases, muscle atrophy, and metabolic disorders.
Researchers developed an algorithm to optimize pacemaker function usage, reducing battery power consumption and potentially extending battery life by years. By switching off unnecessary features, doctors can reduce the number of surgeries needed and lower associated costs for the NHS.
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.
The study identified MYB61-PS1 as a critical regulatory module shaping the 3D structure of xylem vessel pits in rice, improving yield by sustaining vessel hydraulics and facilitating nitrogen transport. Rice plants harboring PS1 Hap2 displayed significantly improved nitrogen transport efficiency, leading to increased grain yield.
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.
A new report from Emory University reveals that certain mental health conditions can raise the risk of developing heart disease by 50-100% and adverse outcomes from existing heart conditions by 60-170%. The study emphasizes a bidirectional relationship between cardiovascular disease and mental health, highlighting the need for an integ...
Researchers identified three distinct molecular subtypes of follicular lymphoma, offering insights into personalized treatment plans. The subtypes C1, C2, and C3 differ in their genetic profiles and tumor microenvironments, guiding the use of specific therapies.
Two new studies from Karolinska Institutet investigate how somatic mutations in muscles and blood vessels affect ageing. The results show that such mutations can reduce muscle strength and accelerate blood vessel ageing.
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 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.
Scientists at The University of Texas at Arlington identified a new enzyme, IDO1, that plays a crucial role in inflammation and cholesterol regulation. By blocking this enzyme, macrophages regain their ability to absorb cholesterol, offering a potential new way to prevent heart disease.
Researchers found that carotid artery plaques can undergo changes over time, becoming more complex and increasing the risk of internal bleeding. This study emphasizes the importance of ongoing plaque monitoring and proactive risk factor management to prevent stroke.
Researchers found that intestinal bacteria and their metabolites can accelerate blood vessel aging and trigger cardiovascular disease. The breakdown product of phenylalanine, phenylacetic acid, accumulates with age and leads to senescence of endothelial cells.
A new study found that chronic cannabis use, whether smoked or consumed as edibles, is associated with significant cardiovascular risks. People who regularly used marijuana had reduced blood vessel function comparable to tobacco smokers.
A team of researchers from the University of Arizona College of Medicine - Tucson has identified a potential drug candidate for heart failure with preserved ejection fraction (HFpEF). The study, published in Cell Metabolism, found that a key ingredient triggering HFpEF is an enzyme that converts glucose into harmful byproducts, ultimat...
The American Society for Nutrition's annual conference will showcase the latest research on nutrition science and its applications. NUTRITION 2025 will highlight key areas such as chronic pain, ultra-processed foods, obesity medicines, and adolescent health, featuring expert discussions and research updates.
A study of 273,770 individuals with cardiovascular disease found that increasing lipoprotein(a) levels significantly increases the risk of subsequent cardiovascular events. Treatment with high-impact LDL-C lowering therapies may help reduce this risk.
A new MRI technique measures a person's 'functional age' of their heart, revealing how unhealthy lifestyles add years to their heart's aging process. This method has the potential to transform heart disease diagnosis and offer a lifeline to millions by catching problems early.
The first-ever Cardiogenic Shock Academy features a simulation lab, providing hands-on training for treating patients in cardiogenic shock. More than 160 healthcare practitioners from around the world attended the academy, which aimed to address the lack of conclusive research for managing CS.
The Mount Sinai Fuster Heart Hospital cardiology faculty practice has received the 2024 Human Experience Pinnacle of Excellence Award from Press Ganey, a leading patient experience organization. The hospital ranks among the top 5% of healthcare providers in delivering patient experience over three years.
The American Heart Association will strengthen and expand Hawaii's stroke system of care, reducing death and disability rates from stroke in rural populations. The initiative aims to enhance coordination among emergency responders, hospitals, and healthcare providers.
Patients with acute type-A aortic dissection (ATAAD) show higher preoperative white blood cell count, IL6, IL8, TNFα, DAO, iFABP, and PGN levels, but lower PaO2/FiO2 ratio compared to controls. Postoperative levels of these markers increase, leading to worsened hypoxemia.
Dr. Christopher Kramer began a one-year term as head of the American College of Cardiology, addressing workforce issues, health equity and AI-driven solutions to improve cardiovascular care. With over 35 years of membership and leadership roles, Kramer brings experience in cardiovascular magnetic resonance imaging.
A study of 130 volunteers found a drastic decrease in heart rate variability after COVID-19, even in mild cases. The researchers observed an imbalance between the sympathetic and parasympathetic nervous systems, suggesting a higher risk of adverse cardiovascular outcomes.
Hunter Medical Research Institute has formed a memorandum of understanding with Novartis (Aust & NZ) to explore future research projects focused on improving cardiovascular health. The partnership aims to accelerate innovation and enhance patient care through collaborative research initiatives.
A new medication approved to treat type 2 diabetes and kidney disease also significantly reduces the risk of heart attacks and strokes among these patients. Sotagliflozin, a sodium-glucose cotransporter inhibitor, blocks proteins that help control blood sugar levels and has been shown to reduce cardiovascular events by 23%.
Sucosky's research aims to build a device replicating the bicuspid aortic valve to investigate how unusual stress leads to its hardening. The goal is to uncover molecular pathways that could be targeted with pharmaceutical treatments.
A recent study published in Nature Medicine analyzed over 2 million veterans taking GLP-1RA medications, finding benefits to cognitive and behavioral health while revealing increased risks for pancreatitis and kidney conditions. The study also showed decreased risks of seizures, addiction, suicidal ideation, and neurocognitive disorders.
Researchers found increased brachial artery diameter and blood flow in college baseball players' dominant arms, particularly pitchers. This asymmetrical adaptation may aid in injury prevention and optimize training strategies.
The ePRO monitoring system significantly improved patient-physician communication and treatment explanations, supporting patient-centered cardiovascular care. The study found that the system's implementation enhanced patient outcomes and reduced healthcare disparities.
Researchers provide comprehensive review of RSV's virology, clinical impact, and prevention strategies, emphasizing the need for effective vaccines to mitigate this critical health need. The review highlights RSV's severe impact on infants, children, and older adults, as well as its potential effects on multiple organs and systems.
A cohort of 1,500 children found cardiovascular health scores began to decline at approximately age 10, associated with health behaviors. This study identifies modifiable health behaviors for prevention efforts to optimize CVH in early life and may contribute to disparities in adulthood.