New method lets researchers study heart cell communication
...hers have used voltage-sensitive dyes to study the flow of electrical signals through heart tissue. "The problem with some of those dyes is they're pretty toxic," Muller-Borer said. "So once you flash the cells with the laser, the dyes become toxic and the cells die. So you get one good study and ......they are able to report temperature, pressure, and flow quickly from great distances. Sensor Highway Ltd. ...d holes in petroleum fields (oil and gas wells and flow lines). A. Lynn Abbott and Bin Yuan, of electrical and computer engineering, received patent 6,1...Early trial at Thomas Jefferson University Hospital shows Angiostatin is safe
... human beings, especially drugs that inhibit blood flow to tumors without directly destroying tumor cells as occurs with chemotherapy or radiation, is to develop means for determining which patients would benefit from continued treatment,"Dr. Capizzi says. The drug's lack of toxicity was a pleasant surpri...Study offers hope for chocolate-loving reflux disease sufferers
...hagus and stomach is opened and acid is allowed to flow back up to the esophagus." After documenting the effects, patients were given granisetron - a substance commonly used to counteract nausea. Granisetron was shown in earlier U-M studies to reduce the effects of chocolate on patients who did not have G...Human brain has unsuspected oxygen reserve, challenging previous theories
...challenges the previously accepted idea that blood flow increases occur during tasks such as reading to ra...g the brain at work. By measuring changes in blood flow during different tasks, researchers can see which areas of the brain spring into action when, for ex...Caution urged in research with angiogenesis therapy
... to spur new blood vessel growth and improve blood flow is a promising treatment for clogged arteries leading to the heart or legs. However, the technique, called angiogenesis, should be pursued with caution, researchers write in a Current Perspective article in todays Circulation: Journal of the America...Optical technique studies brain activity without surgery on skull
...sics. "Our technique works by measuring the blood flow and oxygen consumption in the brain." The optical ...d to find hematomas in children, or to study blood flow in the brain during sleep apnea," Gratton said. "It could also be used to monitor recovering stroke...COOL AID safe after stroke, may deter side effect of clot-busters
...ent damage resulting from the restoration of blood flow after using clot-busting drugs, according to a rep...ion. The irony is that while restoration of blood flow is a prerequisite for recovery, sometimes this restoration, if it occurs into already damaged tissue...Biomolecule studied for medical uses
...oups." They are also easily dissolved and mixable, flow easily and can be sticky. And their thickness and degree of solidification can be controlled with laser light. At Duke Medical Center, Kim's research group is currently evaluating biodendrimers as possible protective sealants for painful perforatio...Blood pressure measures during exercise can indicate unhealthy hearts
...s to dilate, or expand, which allows more blood to flow during periods of stress. Increased pulse pressure...is a more sensitive marker for resistance to blood flow through the arteries, which is a possible sign of atherosclerosis (hardening of the arteries)," says...Scientists image material that could improve MRI technologies
...sistance. In other words, an electrical charge can flow without generating any heat, which means no loss of energy. Second, a superconductor expels some of the magnetic field inside it. In order to keep the desirable zero resistance state, the magnetic fields remaining in the material (in the form of vort...Study suggests mechanical forces drive early heart development
...ust starting to beat. During the second day, blood flow starts and by the third day the tube is beginning to look like a heart, with septums later forming in two different regions to create left and right ventricles on one side, and right and left atria on the other. Taber and his colleagues are stumped...Regular cycling can improve sexual function in men with heart failure
...ion can cause blood vessel damage that impedes the flow of blood to the penis and impairs the ability to produce an erection. None of the study subjects had prostate disease, another frequent cause of sexual dysfunction. One group of 30 patients exercised on calibrated and electronically braked stationar......d economic components and established careful data flow and analysis guidelines to prevent bias. The researchers say the results imply that such devices soon might be routinely employed as another choice in the medical management of terminally ill heart failure patients. This therapeutic option could bene......relationship with the news media to ensure an open flow of information during an emergency. For a long time, biodefense planners have viewed the public as bystanders during a potential crisis, but the people will play a critical role during a bioterrorism attack. As we spend another $500 million buying en...Neuroscientists searching for roots of empathy find brain regions involved in learning by imitation
...nisms of imitation by measuring increases in blood flow in the brain. In the first study the researchers look at imitation from the point of view of a teacher (the person demonstrating a task) versus the point of view of a student (the person learning the task). Eighteen right-handed male subjects were ...Magnetic stimulation may be as effective as electroconvulsive therapy in treating severe depression
...ests that the magnetic stimulation increases blood flow and chemical activity in the affected area of the brain. Depression is common in the United States. Up to 20 percent of the population will experience at least one episode of depression over a lifetime. Further, as many as one-third of these episode...Endurance athletes could benefit from surgical release of kinked leg arteries
... and speed skatersoften have restrictions in blood flow in their iliac arteries (the arteries supplying bl...pital, Veldhoven, Netherlands, proposed that blood flow could also be restricted by kinking in the arteries, and that surgical release of these kinks might ...Newest version of 'the pill' confers same stroke risk as old pill
... Ischemic stroke is caused by insufficient blood flow to the brain, most commonly due to a blood clot that blocks circulation. Oral contraceptives (OCs) are a mixture of synthetic female hormones. First-generation birth control pills, introduced in the 1960s, contained very high doses of estrogens and...Stroke teams double access to fast care without higher costs
... onset of stroke symptoms. It helps restore blood flow to areas of the brain and surrounding blood vessels affected by an ischemic stroke. Ischemic strokes are caused by blockages in an artery to the brain. We know thrombolytics are effective and this study suggests that thrombolytics have the potenti...