Articles tagged with Blood Vessels
Schepens scientists identify the intracellular switch that regulates angiogenesis, a process that can be both beneficial and detrimental to the body. The discovery may lead to more targeted drugs for diseases such as diabetic retinopathy and macular degeneration.
Researchers at Harvard Medical School have discovered a key mechanism that regulates blood vessel growth and regression. By targeting this process, new drugs may be designed to dismantle existing vessels or promote vessel regression in diseases such as diabetic retinopathy and macular degeneration.
A study using RESPeRATE, a device-guided paced breathing system, found significant reductions in blood pressure and peripheral resistance in hypertensive patients. The treatment group showed a greater systolic BP reduction correlated with the total time spent in slow breathing.
A recent study published in Heart Rhythm found that smokers are at a markedly increased risk of receiving an electrical discharge from their implantable cardioverter-defibrillators (ICDs). This risk is seven times higher than that of non-smokers, highlighting the importance of quitting smoking for patients with heart disease.
Researchers found that fibulins inhibit both tumor growth and blood-vessel formation in mice. The study showed that tumors producing fibulins grew up to 24-45% smaller than control tumors after three weeks.
Researchers at MIT developed a tool to selectively irradiate blood vessels to study radiation damage. This technique has the potential to reduce side effects for cancer patients treated with radiation therapy.
Researchers developed a model system for studying neuro-vascular interactions, enabling the creation of stable vascular networks that can connect with larger blood vessel structures. The approach uses a macroporous hydrogel polymer scaffold and co-seeds it with endothelial cells and nerve progenitor cells.
Research reveals a homing mechanism for bone marrow-derived progenitor cell recruitment to neovasculature. This process is crucial in cancer progression as it enables tumors to acquire new blood vessels.
A study reveals that angiopoietin-2 (Ang-2) plays a pivotal role in acute respiratory distress syndrome (ARDS), a condition affecting 40% of patients with sepsis. Elevated Ang-2 levels can cause leakiness in lung blood vessels, impairing lung function and leading to trouble breathing.
Research suggests that aldosterone, a hormone involved in blood pressure regulation, may also contribute to strokes. Aldosterone blockers have shown promise in animal models, reversing wall-thickening effects on blood vessels. However, gender differences and optimal treatment strategies remain unclear.
Researchers discovered that Australians with small blood vessel changes in their eyes were 70% more likely to experience a stroke over seven years. The study's findings suggest that eye examinations could help predict stroke risk, providing a potential window for early intervention.
Researchers have identified a molecular defect in red blood cells as an important cause of pulmonary hypertension, a potentially fatal lung condition. A new therapy that replenishes SNO levels in the blood has shown promise in reversing the disease.
Researchers have identified tadpoles as a suitable model system for studying the lymphatic vessel network, essential for regulating fluid in the body and supporting the immune system. This breakthrough could lead to new solutions for illnesses caused by faults in the lymphatic vessel network, including cancer and lymphedema.
Researchers discovered that Arf gene restricts blood vessel growth in the eye during embryonic development, preventing excessive growth and associated cancers. This finding may lead to new therapies for persistent hyperplastic primary vitreous and anticancer drugs.
Researchers discover that amyloid-β protein plaques attach to blood vessels, causing damage and leakage. This breakthrough understanding may lead to the development of treatments that promote plaque removal from the brain.
Researchers found that tumor cells can stimulate blood vessel growth by activating the MAPK pathway and inducing Notch ligand Jagged1, which promotes formation of new vessels. This interplay between tumor cells and blood vessel cells supports tumor growth and progression.
Scientists are exploring the relationship between manatee tears and blood vessel formation to better understand the animals' immune system. The study found that manatees have a thick, mucusy tear film rich in antimicrobial components, which may help protect against pathogens.
Researchers at MIT have developed a novel approach to creating vascularized muscle tissue using a tri-culture scaffold composed of myoblasts, endothelial cells, and fibroblasts. The resulting implants showed improved integration with the host tissues and functioned in living mice and rats.
Researchers at Medical College of Georgia have developed a new approach to inhibit blood vessel growth by targeting VEGF production within cells. The technique, which uses a gene that binds to and sequesters VEGF, has shown promising results in reducing destructive blood vessel proliferation by up to two-thirds.
Researchers found that coated stents were better at keeping blood vessels open in cirrhosis patients, with improved survival rates and fewer interventions needed. The study analyzed data from 93 patients who underwent a successful TIPS procedure using either coated or non-coated stents.
A University of California, San Diego team discovered a receptor-ligand pair that plays a critical role in the final step of blood vessel formation, allowing newly constructed vessels to 'lock' together. Inhibiting this integrin protein may starve tumors and combat cancer.
A gene mutation that protects against malaria has been found to increase the risk of aggressive prostate cancer in African-American men. Researchers discovered that mice with this mutation developed larger, more aggressive tumors due to increased angiogenic chemokine production.
Researchers found that cranberry juice powder improved vascular function in subjects with high blood cholesterol and atherosclerosis after six months. The study suggests that consuming whole foods rich in polyphenols, such as cranberries, may help protect against heart disease.
Researchers discover that MT1-MMP controls blood vessel response to PDGF-ß signaling, essential for normal vessel formation. MT1-MMP-null mice exhibit severely compromised vascular architecture, suggesting potential therapeutic targets for controlling tumor growth and metastasis.
A breakthrough discovery identifies molecules that trigger secondary cerebral vasospasm after hemorrhagic stroke, leading to potential new treatments and diagnostic tests. Elevated levels of bilirubin and a specific group of oxidation products called BOXes are found to be correlated with the condition.
EndGenitor Technologies Inc. will market test kits for researchers to detect endothelial stem and progenitor cells, which can be used to treat chronic degenerative diseases associated with aging. The company aims to create cell therapy products using the 'ancestor' cells discovered by Drs. Mervin C. Yoder Jr. and David A. Ingram Jr.
Researchers successfully silenced SDF-1's signal in mice with simulated retinopathy, effectively halting the growth of new blood vessels. The study could lead to a treatment option using routine injections of an antibody-blocking substance into a patient's eye.
A new study published in Cancer Cell reveals that combining radiation with antiangiogenic therapy can significantly slow tumor growth when administered at the right time. The research found that a unique time period exists during which this combination is most effective, making it a potential breakthrough in cancer treatment.
A Mount Sinai School of Medicine study identifies the shared precursor cell, called the hemangioblast, in early mouse embryos. This finding provides strong proof for the existence of a common origin for vascular cells and hematopoietic cells.
Researchers found that Semaphorin 3E (Sema3E) and plexin-D1 proteins work together to control vascular patterning in the developing embryo. Sema3E was shown to exert a 'repulsive' force, guiding blood vessels along their proper course and preventing abnormal growth.
A research team at Johns Hopkins Medicine has discovered a new protein pair that stops blood vessels' growth in developing mice, shedding light on tumor development and nerve regeneration. The study, published in Science, reveals a unique mechanism of action for the protein Sema3E, which works differently from other semaphorins.
A study led by UCSD biologists found that blood vessels respond to low oxygen levels, which may be a potent anti-tumor strategy. The research identified a gene, HIF-1alpha, that turns on in endothelial cells when they lack oxygen, causing them to proliferate and migrate.
A recent study found that the Ras protooncogene induces inflammation via CXCL-8, a key factor in tumor growth and angiogenesis. Inhibition of CXCL-8 function led to decreased tumor angiogenesis, highlighting its potential as an anticancer therapeutic target.
Researchers discovered that Netrin-1 stimulates cell proliferation, migration, and adhesion in endothelial cells and vascular smooth muscle cells, promoting angiogenesis. This finding has implications for treating diseases such as cancer and ischemic heart disease by either inhibiting or inducing blood vessel growth.
Researchers used zebra fish to discover that nerves and blood vessels share similar guiding signals, crucial for therapeutic angiogenesis. This finding has significant implications for developing targeted forms of treatment for diseases like heart attacks.
Researchers found that S1P1 plays a crucial role in tumor angiogenesis, which is the formation of new blood vessels to supply nutrients to growing tumors. The study used RNA interference to block S1P1, demonstrating its importance in tumor growth and progression.
Researchers found that Alpha-4Beta-1 is activated by CD47, causing sickle red blood cells to stick to blood vessel walls. This discovery may lead to new therapies for sickle cell disease and other anemias.
Vascular tumor growth in children is linked to a protein called MCP-1 that recruits macrophages, stimulating angiogenesis and tumor growth. Anti-MCP-1 therapy may prevent tumor development and improve patient outcomes.
Researchers have found that astrocytes play a key role in regulating blood flow within the brain, and may hold promise as a target for new therapies to treat strokes. The study, funded by CIHR and Canadian Stroke Network, could lead to new treatments within 5-10 years.
Researchers from MIT and international collaborations found that different proportions of two key ingredients in ginseng promote or hinder blood vessel growth, with implications for wound healing and cancer treatment. The study highlights the need for stronger regulations on herbal drugs due to variable processing methods.
Researchers are exploring the potential of lysophosphatidic acid (LPA) and gelatin to promote blood vessel formation and heal wounds. The study aims to determine how LPA interacts with specific proteins, such as Hic-5, to enhance or inhibit migration.
A defect in blood vessel formation due to the LBP-1a gene mutation can lead to growth retardation, spontaneous abortion, and infant death. The study found that embryos lacking LPB-1a had abnormally large and thin blood vessels, preventing nutrient exchange with the mother's blood.
Researchers found that administering CD34+ cells to mice with stroke damage led to increased new blood vessel growth and improved neural regeneration through the production of growth factors. The findings provide direct evidence for the importance of angiogenesis in repairing stroke damage.
A new study reveals a previously unrecognized mechanism for blood vessel patterning, suggesting a potential therapeutic target for cardiovascular diseases. The discovery involves an endothelial receptor called PlexinD1, which may enable manipulation of blood vessel growth and development.
A recent study published in Neurosurgery found that administering clot-dissolving medication directly to the site of blockages resulted in a 50% success rate in reducing neurological disability, compared to 39% with IV treatment. The intra-arterial therapy showed better results in re-opening blood vessels and improving stroke outcomes.
Researchers have identified a protein, fibulin-5, that inhibits the sprouting of new blood vessels, which is crucial for cancer tumor growth. The findings suggest that fibulin-5 may be an effective cancer therapy and could also serve as a diagnostic tool to detect cancer status.
Researchers at UNC have identified a critical role for the flt-1 receptor in regulating sprouting angiogenesis, a key step in blood vessel formation. The study's findings may lead to new therapies for conditions like coronary heart disease and diabetes.
Researchers developed a non-invasive imaging method to track new blood vessel growth in the heart after a heart attack. The technique uses a radioactively labeled protein to detect changes in damaged areas over time, providing clear visualization of healing processes.
Researchers at Duke University Medical Center have identified a protein called Hypoxia Inducible Factor (HIF-1) as the master switch that enables blood vessels to survive and nourish remaining cancer cells after radiation therapy. By suppressing HIF-1 with experimental drugs, they successfully inhibited tumor growth in animals.
New research reveals that hypoxia-inducible factor-1 (HIF-1) plays a key role in tumor cells' ability to resist radiation therapy. By understanding how this protective response is activated, scientists hope to develop effective treatments to enhance radiation's effectiveness against tumors.
Researchers uncover the stimulatory and inhibitory functions of tissue factor in blood vessel generation, shedding light on diabetic retinopathy and potential new treatments. Transgenic mice studies reveal altered structures in pathologically altered vessels, suggesting a possible target for angiogenesis inhibition.
MDCT angiography successfully diagnosed suspected arterial injuries in 48 of 49 patients, with only one patient requiring a follow-up angiogram. The study suggests that MDCT angiography can replace traditional angiography as an initial diagnostic tool.
Researchers at UT Southwestern discovered a cooperative relationship between CD44 and VLA-4 receptors on T-cells to facilitate their migration into infected tissues. This bimolecular complex is necessary for firm adhesion, allowing T-cells to initiate immune responses in diseases like rheumatoid arthritis.
A high-fat fast-food breakfast causes a surge in inflammatory factors in the blood stream, overwhelming the body's natural anti-inflammatory mechanisms. Repeated exposure may lead to chronic inflammation and increase the risk of heart disease.
Scientists have discovered a key relationship between two inherited eye disorders, Norrie disease and FEVR, linked to blood vessel malformation and activation of the Wnt pathway. The study sheds light on potential treatments for these conditions and raises questions about specialized vascular development systems in other tissues.
A research team at MGH has successfully grown long-lasting blood vessels using a technique that combines endothelial and perivascular cells. The new vessels formed beautiful networks, survived, and functioned like normal vasculature tissue.
Researchers at Stanford University found that microenvironmental VEGF concentration determines the threshold between normal and aberrant blood vessel growth. Long-term continuous delivery of VEGF maintains below this threshold promotes normal angiogenesis, guiding therapeutic strategies.
Researchers found that cancer cells release signals to nearby blood vessels to stimulate new vessel growth, while blood vessels release signals to sustain migrating cancer cells. This two-way dialogue allows cancer cells to survive and grow before new blood vessels form.
Nitric oxide inhibits endothelial cell release of inflammatory substances by targeting a specific protein, thereby regulating exocytosis and preventing inflammation. Researchers have developed a novel drug that blocks this process, showing promise as an anti-clotting agent for various diseases.
Researchers have found that injecting adult bone marrow-derived stem cells into the back of mouse eyes curtails retinal degeneration and restores normal retinal tissue. The treated mice had improved vision and responded to light, offering a potential new approach for treating retinitis pigmentosa.