Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action
...es and extracts waste carbon dioxide while keeping vessels openand blood pressure steady. Scientist... these bits of knowledge together -- that NO keeps vessels open,but that hemoglobin destroys NO -- produced a major paradox that no onecould solve, Stamler sai...Duke Researchers Find Second Gene Linked To Blood Vessel Disorder
...r -- a discovery that offers insightinto how blood vessels form and heal in response to injury. The findin... presumably acquire mechanical damage to tinyblood vessels that need to be repaired, the disorder shows up." Marchuk has shown that families whose disease is...New Mechanism To Explain Carbon Monoxide Poisoning Identified
... In earlier studies, Thom found that blood vessels are a major site ofdamage in the brain due to CO exposure, especially the cells that line the innerwall of the vessels, called the endothelium. This damage occurs relatively earlyduring exposure to CO. Thom argued that if damage occurs early on, it c...First Selenium-Based Orally-Active Antihypertensive May Lead To New Family Of Therapeutic Agents
...n theperipheral nervous system and allow the blood vessels to relaxsufficiently so that blood flow increases," May said. Behavioralstudies of the rats also showed that a hydroxylated derivative of thecompound has minimal effect on the central nervous systems of the testanimals." Analytical Techniques Confi...Family Ties To Sudden Cardiac Arrest; Study Finds Risk Goes Up 50 Percent
... clots or fatty buildupcalled plaque, in the blood vessels prevent blood flow to the heart. The researchers compared family histories of cardiac arrest victims withthose of healthy individuals with similar age, sex and other physicalcharacteristics. The study was limited to victims of sudden cardiac...Detective Work Uncovers New Tick-Borne Disease In North Carolina And The Southeast
...ethe cells lining small blood vessels, causing the vessels to become inflamedor blocked and to bleed. The best known example of a rickettsiael disease is Rocky Mountain SpottedFever transmitted by dog ticks, which, if untreated, produces a fever, headache,rash, and a systemic illness that can range from mil...Garlic Prevents Hardening Of Aorta, New Study Shows
...elocity of the blood thattravels through the blood vessels with each pulse,” said Boudoulas. Boudo...ndothelium to secrete some substance to dilate the vessels and makethe aorta more elastic,” he said. This research was funded by the pharmaceutical ......studiedangiogenesis, the process whereby new blood vessels are formed from pre-existingones. Except in a few special circumstances, it does not occur in the normaladult. However, angiogenesis plays a key role in a number of diseases associatedwith new blood vessel growth such as cancer, diabetic retinopathy,...B-Vitamins Lower Homocysteine Levels In The Blood; May Reduce Vessel Damage In Stroke Patients
...duced by the body toinhibit clots, which can block vessels to the brain and heart, resulting inheart attack or stroke. The research was presented here today at the American HeartAssociation's 23rd International Joint Conference on Stroke and CerebralCirculation. "A short-term vitamin interven...Study Finds Gene Is Associated With Higher Risk Of One Kind of Stroke Among African-Americans
..., adisease process that can create plaque in blood vessels that can lead to a heartattack or stroke. Duke neurologists and genetic researchers presented a novel view ofAlzheimer's disease when they demonstrated, in 1993, that the Apo-E4 variant wasa risk factor predisposing people to developing the ...Low B Vitamin Levels Common In Many People Linked To Increased Heart Disease, Stroke Risk
...ple with atherosclerosis or blockages in the blood vessels of the heart, brain and leg. The individuals were...to forming the blood clots that can obstruct blood vessels or alter levels of cholesterol. Cholesterol builds up in the blood vessels, creates fatty deposits,...New Research Suggests REM Is About Eyes Not Dreams
... circulate to bring oxygen tothe cornea from blood vessels in the iris. When the eyelids are closed duringsleep the circulation slows dramatically, and the motion of rapid eye movementsimply serves to "stir" the anterior chamber and prevent corneal suffocation. In the 1950s, research found that slee...... heartdisease, stroke and atherosclerosis in blood vessels of the limbs. "Thus, blood homocysteine may be a risk factor for atherosclerosis in asimilar fashion as smoking, high blood pressure and high cholesterol levels," hesaid. Indeed, due to scientists' increasing attention on homocysteine, thisamino...Molecular Mechanochemistry: An Emerging Discipline At The Nexus Of Biology And Physics
...d to flow through it." Dilation andconstriction of vessels are ultimately controlled by shifts from one signaltransduction pathway to another, involving gene expression and proteintranscription in the affected endothelial cells. Davies' lab is studying severalendothelial-cell genes sensitive to blood flow an......inly suitable for situation in which many small vessels are diseased but not for bypassing a large stenosing coronary vessel. The scientists at the Max Planck Instiute for Physiological and Clinical Research are currently directing their research efforts in deciphering the mechanism by which...... heart disease, whichresults from blockages in the vessels leading to and from the heart. Byinjecting the gr...f FGF-I, the vascular structurearound the diseased vessels was completely altered in all 20 of the patients. Like the spokes of a bicycle wheel, the new capill...Study Links Viruses And Vascular Diseases
...ses andbacteria might be capable of damaging blood vessels and triggering disease."It's highly unlikely that one single agent is the cause of all vasculardisease," he says. If viruses do in fact set the stage for atherosclerosis, physicians may somedaybe able to prevent the disease with a vaccine, Virgin say...USC Study On Soy's Anti-Cancer Effects
...wth and angiogenesis (the development of new blood vessels thattumors require for continued growth.) Another team gave genistein to female ratsas newborns and later exposed the rats to a tumor-inducing carcinogen. Thetreated rats developed mammary cancer much later than non-treated controls. Someresearchers ...MRI Scans Following Heart Attack Could Determine Future Health
... years. Capillaries are the body's narrowest blood vessels and are more easily cloggedby such debris than larger vessels -- arteries and veins. In addition, researchers noted that the more serious the heart attack......tional information about the heartmuscle and blood vessels to complement the localized metabolic findings. --JHMI-- Media Contact: Marc Kusinitz (410)955-8665 E-mail: mkusinit@welchlink.welch.jhu.edu Johns Hopkins Medical Institutions' news releases are available on aPRE-EMBARGOED basis on EurekAlert at ...