Articles tagged with Blood Vessels
Researchers at Emory University Health Sciences Center have identified honokiol, a compound found in magnolia cones, as a potent inhibitor of tumor growth. Honokiol reduces endothelial cell growth and inhibits angiogenesis, potentially leading to new cancer treatments.
A new treatment approach blocks liver tumor angiogenesis by manipulating the Tie2 receptor. In mice with colon cancer metastasis to the liver, this approach shrinks tumors and extends survival. The mean survival time increased significantly compared to control mice and endostatin-treated mice.
Researchers discover PlGF-1 stabilizes vessel growth in premature infants, preventing retinal detachment and blindness. The study suggests a promising therapeutic agent to prevent oxygen-induced vascular degeneration in ROP.
Sandra McLachlan and her team reveal that cleavage of the TSHR A subunit can induce or amplify the immune response to the TSHR, resulting in autoantibodies that stimulate thyroid hormones. This finding increases understanding of why autoantibodies arise specifically to the TSHR, leading to Graves hyperthyroidism.
Scientists report evidence of catch bonds regulating white blood cell activity, offering potential targets for anti-inflammatory compounds and cancer metastasis control. Researchers discovered prolonged bond lifetimes with increasing force, contrary to initial theories.
Scientists at Northwestern University have discovered an enzyme that makes endothelial cells in the lungs susceptible to injury during periods of inflammation. They developed an experimental MLCK inhibitor, which protected normal mice from lung injury when exposed to bacterial toxin and ventilator-induced stress.
Researchers found that a combination of endostatin and radiation therapy reduced new blood vessel growth in mice with squamous cell cancer. After radiation, endostatin blocked the growth of new blood vessels, leading to long-term survival and tumor control in 40% of mice.
Scientists found that elevated levels of sFlt1 protein mediate the progression to preeclampsia by reducing angiogenic factors. Reducing VEGF-A in kidney cells also caused similar kidney disease, suggesting a plausible scenario for preeclampsia
Researchers identified sFlt1 as the root cause of preeclampsia, a condition characterized by high blood pressure and organ damage. The study's findings hold promise for developing diagnostic tools and therapies for this deadly condition.
A recent NHLBI study found a link between low levels of endothelial progenitor cells and increased cardiovascular disease risk. The study suggests that these cells play a crucial role in repairing damaged blood vessels, and their depletion may contribute to the progression of heart disease.
Research by Dr. Marja J. van Wijk reveals that microparticles can damage blood vessels and disrupt their function, contributing to pre-eclampsia. Oestrogen administration may improve vessel functioning in affected women.
Researchers used radiation to activate receptors in tumor blood vessels, enabling targeted delivery of anti-cancer drugs. The approach showed promising results in reducing side effects and delaying tumor growth.
Research suggests that taking dietary supplements of L-arginine and antioxidants like vitamins C and E may lower the risk of atherosclerosis and heart disease. The treatment reduced inflammation and increased production of eNOS, a molecule that prevents blood clots.
Molecular signals play a critical role in separating the lymphatic system from the circulatory system during fetal development. The study sheds light on the mechanisms behind this separation and its potential therapeutic applications, including influencing blood vessel growth and tumor treatment.
A new study reveals that Viagra encourages platelets to aggregate, potentially leading to thrombosis and life-threatening conditions like heart attacks and strokes. The researchers found that the drug's active ingredient raises levels of cGMP, which initially causes platelets to clump but later reverses to prevent excessive buildup.
Researchers developed a system to study blood vessel development without mural cells, revealing that angiopoietin-1 partially restores large vessel structure. The study suggests Ang1 is crucial for normal vessel stability and highlights the importance of pericytes in maintaining vascular networks.
Regular aerobic and weight-lifting activities can help diabetics control blood sugar and lower blood pressure, also providing cardiovascular benefits. Exercise training reduces total and abdominal fat, leading to improvements in insulin sensitivity, blood pressure, and blood vessel function.
African-American patients are 71% as likely as white patients to receive a referral for coronary angiography, but only 63% actually undergo the procedure. Private insurance and patient preference may play roles in the disparity.
A new vaccine has been shown to prevent stroke in rats by reducing inflammation in blood vessels. The study found that the vaccine reduced ischemic strokes by 16 times and prevented hemorrhagic strokes altogether.
Researchers from Penn State College of Medicine developed a new measurement technique to assess norepinephrine release in tissues adjacent to blood vessels. This improvement allows for more accurate data on the hormone's role in vasoconstriction and maintains adequate blood pressure when standing up.
Researchers at TSRI have developed a technique to selectively deliver adult stem cells into the eye, which can stimulate vessel growth and address inherited retinal degenerations. The cells can incorporate into the vasculature and make it normal, or be loaded with antiangiogenics to selectively wipe out the formation of new blood vessels.
A previously unrecognized function of myeloperoxidase has been identified, affecting vasculature through a pathway independent of chlorine bleach production. This discovery may lead to the development of new drugs to treat inflammatory vascular diseases and conditions like septic shock.
A new drug could provide a non-destructive way to treat blindness in diabetics, blocking the pathway that causes damage. The drug is currently being tested in clinical trials and has been funded by $4.7 million from the US-based JDRF and NHMRC.
The balancing act between COX-1 and COX-2 enzymes plays a crucial role in protecting the heart from cardiovascular disease. The study found that PGI2 production is stimulated as a response to platelet interactions with the vessel wall, limiting the harmful effects of thromboxane.
Biocompatible thin films have been successfully fabricated on various biomedical substrates using electrostatic self-assembly techniques. These films can inhibit restenosis, a tissue buildup that occurs in blood vessels after trauma, and have potential applications in stents and dialysis tubing.
Researchers discovered the ancestral role of VEGF protein guiding developing blood cells to their destinations. The findings suggest that blood vessels may have evolved from blood cells, a theory supported by studies on fruit fly embryos.
Hopkins scientists advance understanding of penile erection by showing how blood vessels continuously produce nitric oxide to maintain an erection over time. The discovery offers new insights into the complex physiology of erection and potential applications for treating erectile dysfunction.
Researchers have made a groundbreaking finding that may impact brain swelling research by discovering how the Aquaporin-4 protein is tethered to Syntrophin, leading to better understanding of the blood-brain barrier. The study's results suggest that AQP4 and Syntrophin play a crucial role in regulating water flow in the brain.
Scientists at Scripps Research Institute have discovered a fragment of the human protein TrpRS that inhibits angiogenesis, offering new hope for treatments of age-related macular degeneration and diabetic retinopathy. The truncated form of TrpRS appears to be more potent than existing antiangiogenic compounds.
Researchers at the University of Michigan successfully grew new, mature blood vessels in live animals by implanting scaffolds that delivered critical growth factors. The innovative approach, reported in Nature Biotechnology, has potential medical applications for alternatives to heart bypass surgery and treatments for vascular disease.
Researchers at Yale University have developed a novel molecule that eradicates cancer by destroying tumor blood vessels. The icon targets the inner surface of tumors expressing tissue factor, allowing it to bind and activate an immune response against cancer cells.
Research reveals women exhibit a greater decrease in arterial pressure during recovery, with reduced cardiac output and lesser increases in vascular resistance. Engaging light activity supports arterial pressure, regardless of gender.
Researchers have successfully used gene therapy to reduce new blood vessel growth by up to 90% in mice with conditions similar to macular degeneration and diabetic retinopathy. Two genes, endostatin and pigment epithelium-derived factor (PEDF), were injected into the animals' eyes or tails to demonstrate the potential of gene therapy a...
Researchers have discovered a new mechanism that triggers blood cell adhesion in sickle cell disease, with P-selectin playing a key role. Inhibiting P-selectin has shown promise in reducing adhesion and potentially preventing pain crises and organ failure.
Mutations of the Lkb1 gene cause Peutz-Jeghers syndrome, a disorder characterized by polyps in the intestines and increased risk for cancerous tumors. Researchers found that Lkb1 regulates the formation of heart and blood vessels in embryos.
Young adults experiencing nontraumatic chest pains may have cocaine use, researchers say. Effective treatments include nitroglycerin or calcium blockers for constricted blood vessels.
Researchers tested four viruses to transport genetic material into defective eyes of 18-day-old rats. Adenovirus proved the most effective vector, targeting specific tissues and preventing disordered blood vessel growth. Early-stage research suggests a potential breakthrough in treating retinopathy of prematurity with gene therapy.
Scientists at Massachusetts General Hospital have developed a new imaging technique that allows for the visualization of individual cells within living tumors. This technology enables researchers to monitor gene expression, therapy effectiveness, and tumor-cell interactions with normal cells, providing new insights into cancer biology.
Researchers found elevated levels of endocannabinoid anandamide and CB1 receptors in cirrhotic liver samples, suggesting a novel approach for managing vasodilation and portal hypertension. Elevated levels of anandamide may also reduce blood pressure.
Researchers discovered a direct link between apoE and cerebral amyloid angiopathy (CAA), a leading cause of bleeding strokes in the elderly. Decreasing apoE expression may inhibit CAA buildup, lowering the risk for cerebral hemorrhage.
Researchers at Johns Hopkins and CIBA Vision Corp. have identified a natural chemical substance responsible for blinding blood vessel growth in patients with diabetic retinopathy. The study found that blocking this substance can completely stop abnormal vessel growth, offering new potential treatments for the condition.
Researchers found that controlled amounts of supplemental oxygen do not worsen retinopathy of prematurity in premature infants. However, the study suggests that it may help prevent the disease's progression to severe stages, potentially reducing the need for invasive surgery and long-term side effects.
A new study found that hostile individuals experience increased blood pressure and vessel constriction in response to mild social stressors, such as discussing capital punishment with a calm opponent. This suggests that individuals with high levels of mistrust and suspicion anticipate trouble in interpersonal situations.
Researchers at UCSF and Regeneron Pharmaceuticals have found that the protein angiopoietin-1 (Ang1) can restore leaky vessels to normal, block leakage effects of substances, and complement VEGF's growth-promoting action. This discovery holds strong promise for treating chronic inflammatory diseases and promoting healthy blood vessel gr...
Heart cells secrete substances to regulate oxygen-rich blood flow, triggering vessel constriction or dilation as needed. Research reveals an optimal oxygen concentration of 6%, with narrow permissible windows above or below this level.
Scientists have found a possible way to induce new blood vessels without gene therapy, by lowering an individual's heart rate, according to a University of Iowa Health Care study.
Physicists at the University of Amsterdam have developed a new method for treating port wine birthmarks using a red laser light. The improved wavelength allows deeper blood vessels to be accessed without damaging surrounding skin tissue, leading to more effective treatment outcomes.
Scientists have identified a drug that completely stops the growth of abnormal blood vessels on or beneath the retinas of laboratory mice, potentially preventing vision loss. The drug, PKC 412, has shown promising results in halting abnormal vessel growth by up to 100%, with no apparent adverse effects on normal blood vessels.
A University of North Carolina study finds that couples with high family support show better heart and blood pressure responses to stress, while spousal support is particularly valuable in reducing cardiovascular risks. The research highlights the importance of psychological factors in family life for heart health.
Duke University researchers found that angiostatin works by depleting the chemical energy needed for blood vessel cells to grow. This discovery offers a novel insight into the body's use of ATPsynthase as a power pack and suggests a new route to developing drugs to block tumor growth.
A University of Michigan team discovered that vascular endothelial growth factor (VEGF) helps blood vessels survive and proliferate in the face of nutrient depletion. This mechanism is thought to support tumor growth, leading researchers to explore strategies for inhibiting VEGF to starve tumors.
Estrogen has been found to improve blood vessel function and provide protection against coronary artery disease in premenopausal women. The hormone works by causing endothelial cells to produce more nitric oxide, leading to increased blood flow and reduced risk of heart disease.
Researchers at Johns Hopkins Medicine discovered that bearing down hard during sex can cause transient global amnesia, a temporary inability to form new memories. The study found two cases of men experiencing confusion and amnesia after sex, linked to the Valsalva maneuver and sympathetic nervous system activation.
Squalamine, a novel liver steroid, has been shown to inhibit the growth of brain tumors called gliomas by disabling blood vessel formation. In laboratory tests, it proved as effective as carmustine in slowing tumor growth and constricting blood vessels, suggesting potential as a human therapy.
Researchers at TSRI uncover a natural mechanism that regulates angiogenesis, a process involved in cancer growth. A recombinant protein fragment, PEX, is developed to block angiogenesis and tumor growth in an experimental model, offering a potentially novel therapeutic approach.
Researchers identified how smokeless tobacco causes blood vessels to leak in the mouth leading to inflammation. The study found that exposure produces bradykinin, a potent pro-inflammatory peptide.
Researchers found that taking vitamins C and E before a high-fat meal can prevent impairment of blood vessel dilation. The study suggests that vitamins may influence minute-by-minute changes in blood vessels that lead to heart disease. Vitamins may blunt the process by releasing nitric oxide, which allows vessels to dilate.
Researchers at Johns Hopkins Medicine found that squalamine, a shark liver substance, nearly stops the growth of new blood vessels that nourish solid brain tumors. The study showed a significant reduction in tumor cell growth and slowed the formation of new blood vessels by up to 83% after two days.