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Veins in Biological News

Improved foam for varicose veins found to be safe in preliminary results from phase II trial

... common heart defect who were treated for varicose veins with an injectable microfoam experienced no ... been a standard treatment since 1997 for spider veins and small varicose veins. Varisolve, a foam made ... Wake Forest University Baptist Medical Center. veins in the leg have valves that are designed to ...

New thoracic imaging approach can pinpoint underlying venous problems

... a new technique for capturing images of chest veins that eases diagnosis of venous diseases. ... time it takes contrast solution to reach the veins so useful images can be produced using the CT ... key to getting accurate clinical images of the veins is in the timing, Vagal says. Both syringes ...

St. Jude settles century-old debate on origin of mammalian network of lymphatic vessels

... lymphatic vasculature arises in the embryo from veins by means of continuous release from the veins of cells that multiply and then migrate to ... (LEC) progenitors located in the embryonic veins and that express (activate) the Prox1 gene. These ...

August 2009 Geology and GSA Today media highlights

... most of the world's copper, Cu-sulfides are disseminated along small veins and fractures associated with small bodies of porphyritic-textured ... most high Cu grades are associated with small, early, granular quartz veins are found above magmatic sources emplaced to depths of about 4 km or less. ...

Gene is likely cause of stroke-inducing vascular malformations

... a gene controlling whether blood vessels differentiate into arteries or veins during embryonic development is linked to a vascular disorder in the brain ... arteriovenous malformation, is a vascular disorder causing arteries and veins to be directly connected, rather than through capillaries. This direct ...

Elastic stresses influence formation of leaf veins

... generated by the unequal growth rate of different leaf tissues. Leaf veins are the channels that conduct substances within the leaf and lend support ... similar to natural ones. The full explanation for the development of veins could involve both elastic stresses and the influence of auxin, the ...

Desert rhubarb -- a self-irrigating plant

... desert region. When the research team watered the plant artificially, they observed how the water flows along the course of the leave's depressed veins to the ground surrounding the plant's single root and then penetrates the ground to a depth of 10 cm or more. Under the experimental conditions, ...

A tiny frozen microbe may hold clues to extraterrestrial life

... is small even by bacterial standards it is 10 to 50 times smaller than E. coli . Its small size probably helped it to survive in the liquid veins among ice crystals and the thin liquid film on their surfaces. Small cell size is considered to be advantageous for more efficient nutrient uptake, ...

MSU researchers receive $400,000 in first wave of stimulus funding

... Galligan on a project looking at the causes of high blood pressure. "The work specifically looks at how a high-salt diet affects the arteries and veins in the gastrointestinal system," Fink said of the project, which is in its seventh year at MSU. The money announced June 2 was part of $2.7 ...

New device detects heart disease using less than one drop of blood

... said Gerald Weissmann, M.D., Editor-in-Chief of The FASEB Journal . "In addition, this moves much closer to a future where new blood vessels, veins and arteries for transplants no longer need to be grafted from patient's bodies. The amount of pain and recovery times for bypass surgeries would be ...

Genetic factors may predict depression in heart disease patients

... , the genes are related to the vascular system, suggesting that vascular health which includes the body's network of blood vessels, arteries and veins may be a predictor of depression in individuals with heart disease. This is the first large-scale genetic study of depressive symptoms in cardiac ...

Ultrasound imaging now possible with a smartphone

... for imaging the kidney, liver, bladder, and eyes, endocavity probes for prostate and uterine screenings and biopsies, and vascular probes for imaging veins and arteries for starting IVs and central lines. Both medicine and global computer use will never be the same. "You can carry around a probe ...

TheVisualMD.com launches new animated 3-D views of human body in action

... latest effort from Alexander Tsiaras' Anatomical Travelogue, will allow users to view the heart as it grows into a complex network of arteries and veins and as it becomes infected with disease. TheVisualMD.com site will expand in 2009 to include anatomical visualizations of disease states such as ...

Prosthetic vein valve designed to direct blood flow shows promising pre-clinical results

... venous insufficiency. The condition, which affects more than seven million people in the United States alone, occurs when valves in a person's veins can no longer ensure a one-way flow of blood back to the heart. "Blood flows to the toes because of gravity, but the body uses vein valves to ...

Researchers devise means to create blood by identifying earliest stem cells

... all cell types in the body. These hemangioblasts go on to become either blood cells or endothelial cells, which form the inner lining of the heart, veins and arteries, and lymph vessels. The research grew out of Zambidis' interest in understanding the complex biological processes of blood ...

Milkweed's evolutionary approach to caterpillars: Counter appetite with fast repair

... a gallon of sticky paint thrown into your face," said Agrawal. Some caterpillars, in turn, have adapted by shaving the leaf, cutting a leaf's veins in a circle and then eating in the middle where the latex doesn't flow. Also, the monarch caterpillar has become immune to the cardenolides. Using ...

Backpack straps can decrease blood flow in the shoulder and arm

... straps typically rest on an area of the body where they may compress the axillary vein which causes abnormally high blood pressure inside the veins and a subsequent decrease of blood flow in the shoulders and arms. The researchers speculated that blood flow of the large and small vessels of the ...

Unravelling the Northwest's Viking past

... The blood of the Vikings is still coursing through the veins of men living in the North West of England according to a new study which has been just published. Focusing on the Wirral in Merseyside and West ...

Rice's West honored as one of Texas' best researchers

... nanoshells. Her group is currently creating new materials for small-diameter vascular grafts that could eliminate the need for doctors to use veins from a patients leg for heart-bypass surgery. In addition, her team is partnering with researchers from Baylor College of Medicine to regenerate ...

Depression, aging, and proteins made by a virus may all play role in heart disease

... osteoporosis and type-2 diabetes. The researchers developed a model to test these linkages by using endothelial cells that line the inside of veins in umbilical cord tissue. They wanted to see how the cells themselves, as well as the immune macrophages, reacted when exposed to the virus as well ...

UK scientists working to help cut ID theft

... systems measure unique behavioural or physical traits to recognise people. These can be as varied as iris images, fingerprints, the structure of veins in the hand, or even an individuals typing rhythm. Currently they are predominantly used in national government systems for border control or ...

Researchers show that veins stiffen as we age

... System in Newark has now confirmed that even our veins stiffen as we age. "When you are young, your veins are nice and elastic--like rubber bands," William ... "But as you grow older, we've found that your veins become more like lead pipes." And that ...

The appearance of your hands can reveal your age, study finds

... photographs of female hands ?blemishes and hand veins were removed or jewelry and nail polish were ... by thin skin, age spots, wrinkles, deformity, veins and prominent joints ?did not change the ... hand veins. In altered images where hand veins were removed, participants significantly felt ...

Study shows pine bark naturally decreases severe chronic venous insufficiency

... travel-related DVT. Like varicose veins, spider veins also develop if edema is left untreated. "Chronic venous insufficiency is caused when leg veins cannot pump enough blood back into the heart. ... Pycnogenol® also helps prevent existing spider veins from getting larger and more prominent. When ...

Researchers offer clues to how leaves patterns are formed

... mechanism responsible for the initiation of the veins in the leaf with that of formation of the shoot ... the team identified cells within individual veins that transport the hormone auxin in two opposite ... veins. One of the objections to the idea that veins might act as a channel to transport auxin was ...

Researchers develop portable 'vein finder' for faster, more accurate injections

... conditions often make it difficult to locate veins and administer lifesaving drugs or solutions. ... that uses Doppler ultrasound technology to find veins quickly. "Depth and angle are the critical ... (which carry blood away from the heart) from veins (which carry blood to the heart). Once the device ...

Blood-brain barrier breached by new therapeutic strategy

... Boston, and his colleagues used JEV to infect the brains of mice. They then injected the antiviral siRNA bound to the rabies peptide through the tail veins in one group of mice, while other mice served as control groups. All the mice in the control groups died from JEV infection; in contrast, 80 percent ...

New imaging technique tracks traffic patterns of white blood cells

... time. In the upcoming March issue of Nature Methods, the new research displays the migration and inner workings of white blood cells in the small veins and bone marrow of mice. "Intravital micropscopy (IVM) has contributed enormously to the recent mechanistic advances in leukocyte trafficking," ...

Natural pine bark extract relieves muscle cramp and pain in athletes and diabetics

... in the number of cramps while on Pycnogenol. The second study involved 47 participants with diabetic microangiopathy (a disorder of the smallest veins commonly associated with diabetes), or intermittent claudication (a blood vessel disease that causes the legs to easily cramp).This study also used a ...

Rare Tibetan antelope listed as endangered

... by an abnormal heart rhythm. In order to demonstrate this possible use, the researchers produced real-time 3D images of a dog's right pulmonary veins -?sites that are targeted in treating atrial fibrillation. Similar 3D ultrasound devices also hold promise for minimally invasive abdominal and ...

3D ultrasound device poised to advance minimally invasive surgery

... by an abnormal heart rhythm. In order to demonstrate this possible use, the researchers produced real-time 3D images of a dog's right pulmonary veins -?sites that are targeted in treating atrial fibrillation. Similar 3D ultrasound devices also hold promise for minimally invasive abdominal and ...

University of Delaware researchers develop cancer 'nanobomb'

... shockwave kills the cancerous cells as well as the biological pathways that carry instructions to generate additional cancerous cells and the small veins that nourish the diseased cells. Also, it can be spread over a wide area to create structural damage to the cancer cells that are close by. The ...

Retinal scans eyed for New Mexico show cattle

... livestock specialist at NMSU's Clayton Livestock Research Center. "It painlessly flashes a beam of light into the eyeball and records the pattern of veins in the eye." Each retina, whether bovine or human, is unique and a scan is considered one of the most accurate forms of identification, he said. ...

Scientists identify genes responsible for 'black rot' disease in vegetables

... favorable conditions (high humidity and temperature), Xcc infects vegetable crops by spreading through the plants' vascular tissues, turning the veins in their leaves yellow and black, and causing V-shaped lesions along the margins of the leaves. All vegetables in the crucifer family, including ...

Rush Physicians Using Gene Therapy For Heart Patients With Moderate To Severe Chest Pains Who Do Not Benefit From Other Treatments

... involves a catheterization with a balloon-like device that opens blocked arteries, while bypass surgery requires open-heart surgery to place veins removed from the patient's leg or arteries taken from the patient's chest wall or arm to "bypass" the blocked blood vessels. While both of these ...
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