Articles tagged with Blood Vessels
Sponges exhibit coordinated movements despite lacking muscles or neurons, attributed to relaxation of stress fibres triggered by an evolutionarily ancient inflammation-like mechanism. This process also regulates human blood vessel contraction, influencing blood pressure.
A team of researchers created a 3D bioprinted brain blood vessel model to investigate the impact of blood vessel curvature on metastatic cancer development. The model revealed that increased blood vessel curvature correlates with heightened cancer cell adherence and extravasation.
A new study found that nicotine-free vape fluid can increase inflammation and oxidative stress in the lungs, causing damage similar to patients with lung injury. The research identified a protein called ARF6 as a key regulator of this damage.
Experts recommend increasing the use of intravascular ultrasound (IVUS) in lower extremity revascularization procedures to optimize outcomes and reduce complications. The technique provides detailed information about vessel walls, plaque composition, and blood flow characteristics, enabling more accurate diagnosis and treatment planning.
A pair of proteins YAP and TAZ have been identified as conductors of bone development in the womb. They help direct blood vessel integration into cartilage, a vital aspect of bone development, and may provide insight into genetic diseases such as osteogenesis imperfecta.
A study by Waseda University explores the effects of different vascularization strategies on brain organoids, improving cell differentiation and transcriptome profiles. Vascularized cerebral organoids exhibit a gene expression profile closer to fetal human brains than non-vascularized ones.
Researchers developed a method to measure microvascular changes in the skin using AI and optoacoustic imaging technology, enabling non-invasive assessment of diabetes severity. The study identified 32 significant changes in blood vessels, which can be used to monitor disease progression.
Scientists at ETH Zurich successfully navigate gas-filled microbubbles through the brain's blood vessels using ultrasound, offering a potential breakthrough in delivering medications to specific areas. This technology could revolutionize treatments for cancer, stroke, and neurological conditions.
Researchers discovered that apotransferrin can mitigate the damaging effects of intracerebral haemorrhage by guarding against ferropoptosis, a cell death process. This finding highlights the therapeutic potential of apotransferrin as a pre-hospital treatment for stroke patients.
Researchers investigate nanoparticles for cancer treatment, hoping to reduce side effects and improve efficacy. La-Beck's lab aims to understand the body's interaction with nanoparticles and their impact on tumor growth and immune responses.
Cambridge scientists have grown small blood vessel models in the lab and identified a drug target to prevent vascular dementia and stroke. The study found that disrupting the scaffolding that supports these vessels can cause them to leak, leading to conditions such as SVD.
Engineers use module assembly to develop vascularized organotypic tissues with high cell density and well-organized vasculature. This approach enables the rapid generation of functional tissue substitutes with improved efficacy in treating diseases.
Scientists identified two genes, ADRA2A and IRX1, that predispose individuals to Raynaud's phenomenon. The genes affect the body's ability to regulate blood vessel constriction, leading to white fingers and toes in response to cold or stress. The study provides new insights into the disease and potential treatment options, including th...
A new study found that even a mild chronic sleep deficit can lead to inflamed and dysfunctional vascular cells, increasing the risk of cardiovascular disease. Shortened sleep duration for six weeks caused oxidative stress in these cells.
A study by researchers from National Institutes of Health and Glasgow University found that amlodipine does not activate calcium channels, contradicting earlier concerns. The medication remains a recommended first-line treatment for high blood pressure, reducing deaths from hypertension.
Researchers developed a new technology to test new drugs against liver diseases by recreating the real human liver environment. The model consists of live liver cells in an artificial blood vessel system, allowing for controlled testing and monitoring.
A University of Virginia team has developed a new analytical tool using hydrogels to cultivate vascular sprouting from mouse lung tissue, providing new insight into idiopathic pulmonary fibrosis. The research aims to understand the biomechanical and biochemical cues to blood vessels in the lungs during disease progression.
The study reveals that NO forms a new compound, NO-ferroheme, which significantly expands blood vessels and directly activates guanylyl cyclase. This finding challenges the long-held hypothesis on nitric oxide signalling in blood vessels.
A new study suggests that cerebral amyloid angiopathy (CAA), a common cause of spontaneous brain hemorrhages, can be transmitted via blood transfusion. Patients who received blood from donors with CAA were more than twice as likely to suffer a brain hemorrhage themselves.
Researchers found that antioxidants activate a mechanism forming new blood vessels in tumor cells, which can help them grow and spread. The study suggests that dietary supplements containing antioxidants may accelerate tumour growth and metastasis in cancer patients.
Scientists have created ultra-thin layers of human cells in tube-like structures using the RIFLE technique, enabling the development of lifelike tissue models. This innovation has significant implications for drug development and disease research, offering a more accurate alternative to animal models.
The study found that walking at least 3967 steps a day reduces the risk of dying from any cause, while 2337 steps a day reduces the risk of dying from cardiovascular disease. The researchers also found that every 500-1000 extra steps increase health benefits and reduce mortality risk by up to 15%.
The study reveals altered magnitudes and coherence between oscillations in brain vasculature and brain waves in older adults. This finding has significant implications for the assessment of Alzheimer's disease and monitoring of neurodegenerative disorders.
Researchers have developed ultra-small and flexible probes that can record single-neuron activity deep within the brains of rats, eliminating the need for invasive surgery. The devices were implanted through blood vessels with no significant impact on brain function or behavior.
A new geometric deep learning model called GFCN has been developed to detect stroke lesions in brain imaging scans. The model leverages rich geometric information to segment brain tissue and achieves higher segmentation performance than other neural network architectures.
Dendritic cells form three-dimensional networks that regulate their migration and development. The new concept reveals how cytokines keep the cells together and close gaps in their network. This discovery has prognostic value for tumour diseases, particularly after immunotherapy.
Researchers establish a direct link between Covid-19 and Alzheimer's disease, attributing the connection to RAS overactivation caused by SARS-CoV-2 virus. This dysfunction leads to increased b-amyloid protein accumulation, impairing brain cell synaptic connections and cognitive functions.
Researchers developed a new therapeutic molecule that activates WNT signaling to restore the blood-brain barrier's normal function. The treatment showed promise in treating conditions such as multiple sclerosis and ischemic stroke by reducing the severity of strokes and improving survival rates.
Researchers used a new transgenic mouse model to study the impact of oxidative stress on neurons and blood vessels, revealing that high levels of stress can cause sensory neuron degeneration and cardiac hypertrophy. This combination is associated with Friedreich's ataxia, a progressive neurodegenerative disease.
A new study published in Journal of Leukocyte Biology found that age and sex differences contribute to increased inflammation in older female mice. The research team discovered that immune cells entering areas where they shouldn
The study used transcranial photobiomodulation (tPBM) to stimulate the prefrontal cortex, a region involved in cognitive function. The results showed that tPBM modulated hemodynamic and metabolic activities in a wavelength- and site-specific manner.
Researchers at UCSF tested a nitroglycerin patch for treating menopausal women experiencing severe hot flashes. The study found short-term improvements, but benefits did not last past 12 weeks, with some side effects reported.
Researchers discovered that targeting specific blood vessel enzymes can enhance immunotherapy effectiveness and prevent breast cancer metastasis. By disabling the enzyme DNMT1 in blood vessels, doctors may bolster anti-tumor immune cells entry and increase patients' response to treatment.
Researchers have found that stimulating a specific bile acid receptor, FXR, may help prevent retinopathy of prematurity in premature babies. By targeting this receptor, the study aims to develop earlier and more effective treatments to protect their vision.
Researchers discovered that vascular toxicity linked to these drugs is unrelated to angiogenesis-related genes, but rather due to changes in vascular architecture. This new understanding will help select the most effective and safe way to modulate angiogenesis in ischemic tissues or cancer.
Researchers at the Beckman Institute for Advanced Science and Technology have developed a new framework for super-resolution ultrasound using deep learning, reducing processing speeds from minutes to seconds. The new technology enables real-time blood flow visualization, overcoming challenges faced by conventional methods.
A case study published in the Journal of Alzheimer's Disease reveals that lecanemab can lead to therapy-induced Aβ phagocytosis and multifocal intracerebral hemorrhage, highlighting a potential risk of brain damage and death. The study suggests that better biomarkers are needed to assess the extent of cerebral amyloid angiopathy.
Researchers found that isosorbide mononitrate and cilostazol can safely improve debilitating outcomes after lacunar stroke. The two drugs were even more effective when used in combination, with participants showing significant improvements in thinking and memory skills, as well as quality of life.
CARMN is a long noncoding RNA that regulates contractility in both blood vessels and the gastrointestinal tract. Without CARMN, mice cannot survive due to impaired GI tract contraction, leading to conditions like intestinal pseudo-obstruction.
Researchers investigated the cardiovascular effects of glucocorticoids on chicken embryos, finding that Betamethasone (Beta) caused more severe growth restriction, cellular stress, and cardiac dysfunction compared to Dexamethasone (Dex). Dex triggered oxidative stress, while Beta sustained glucocorticoid receptor activation
More than half of stroke survivors develop cognitive impairment within a year, with 1 in 3 at risk for dementia. Early screening and comprehensive care are advised to support stroke survivors with cognitive impairment.
Researchers have developed a 'vein-on-a-chip' device that mimics the human vein, eliminating the need for animal models in some studies. The device, which includes structures called valves and endothelial cells, allows scientists to study mechanisms of blood clot formation in a realistic manner.
A mobile application utilizing Python and a single-element ultrasound transducer has been developed for photoacoustic tomography (PAT) image reconstruction. The application successfully reconstructs high-quality images with signal-to-noise ratio values above 30 decibels, making it suitable for point-of-care diagnosis in low-resource se...
Researchers at Temple University Health System found that carbonic anhydrase inhibitors reduce inflammation, restore cell function and prevent cognitive impairment in mice with amyloid buildup. CAIs also improved cerebrovascular health and enhanced amyloid-clearing capacity.
Researchers have found a new target and drug combination that appears to stop the destruction of vision in premature newborns. By blocking ACAT1, an enzyme that converts cholesterol into smaller pieces, scientists can prevent the formation of leaky blood vessels and inflammation in the retina.
A new study by Ohio State University researchers has made significant strides in ensuring the safe and effective transfusion of artificial blood substitutes. The key to improved safety lies in the size of the artificial blood molecule, with larger sizes reducing cardiovascular side effects.
Researchers at TUM have developed a method to create mini-hearts in Petri dishes using stem cells. The resulting organoids mimic the earliest stages of human heart development and can be used to investigate congenital heart defects, potentially leading to new treatment methods.
Studies found that certain T cells in human blood can produce acetylcholine, regulating blood pressure and inflammation. Higher levels of these immune cells were associated with reduced risk of death in seriously ill patients.
Researchers at Tel Aviv University found that dedicated hyperbaric oxygen therapy is more effective in reducing pain and healing patients with fibromyalgia caused by traumatic brain injury. The treatment resulted in significant improvements in 2 out of 5 patients, including improved pain threshold tests and quality of life indicators.
A study by Tokyo Medical and Dental University reveals that chronic kidney disease promotes vascular calcification by altering signaling molecules in blood vessel walls. The researchers identified four microRNAs that target a key pathway driving calcification, providing potential biomarkers and therapeutic targets for both diseases.
A University of Ottawa study found that almost two-thirds of Canadians with stroke experience disturbed sleep, and those affected are up to 7 times more likely to report multiple sleep problems. The study highlights the need for better awareness and guidance on managing sleep disorders in stroke patients.
Research suggests that females are more prone to salt sensitivity, leading to higher blood pressure, particularly after menopause. Salt sensitivity affects about half of hypertension cases and is often linked to treatment-resistant hypertension.
Researchers at Indiana University School of Medicine have identified a new type of cell called the vasculogenic fibroblast, which can help create new blood vessels for treatment. This discovery could lead to improved treatments for ischemic diseases such as diabetic wounds.
Researchers developed a microfluidic model of vascular malformation caused by PIK3CA mutation, allowing them to study disease mechanisms and test treatment efficacy. The model successfully replicated the disease's manifestations and responded to alpelisib, a newly approved PIK3CA inhibitor.
UVA scientists have discovered a new contributor to abnormal blood vessel growth in the eye, which could lead to new treatments for macular degeneration and other vision loss conditions. The discovery identifies a key protein that determines VEGF levels, blocking it has reduced VEGF levels significantly without unwanted side effects.
A new study has identified a biomarker, placental growth factor (PlGF), which is associated with cognitive impairment and dementia due to vascular brain injury. Higher levels of PlGF in the bloodstream are linked to increased risk of cognitive decline and cerebral small vessel disease.
Researchers at Hokkaido University used hydrogel materials in combination with neural stem cells to grow new brain tissue in areas of brain damage. The study showed that immune cells and blood vessels grew within the hydrogels, leading to some degree of integration between the hydrogel and host brain tissue.
A recent study found that recurrent stroke risk has declined over the past 20 years, with a greater decrease observed among women compared to men in South Texas. The study analyzed data from nearly 6,000 first-time ischemic stroke survivors and found that lifestyle changes and medication can help prevent recurrent strokes.
Women who experience five major pregnancy complications face an increased risk of ischemic heart disease up to 46 years after delivery. The study found that all major adverse pregnancy outcomes should be recognized as lifelong risk factors for heart disease.
Researchers developed a new tool using vortex ultrasound to break down blood clots in the brain, which eliminated clots more quickly than existing techniques. The approach works by inducing shear stress on the blood clot, reducing risk of hemorrhage in the brain.