American Heart Association updates 'mini stroke' guidelines
...ctually a transient ischemic attack, or TIA, which occurs when a blood clot briefly blocks an artery that supplies blood to the brain. The symptoms -- which may last only a few minutes or several hours -- include weakness or sudden loss of vision. TIAs are strong predictors of future strokes. An individ...Scientists identify new pathway of antidepressant action
...rder, Mellon and Griffin said. Since the disorder occurs during a specific phase of the menstrual cycle, researchers have deduced that it is affected by levels of ovarian hormones such as progesterone. Subsequent studies, in rats, showed that Prozac does increase levels of the neurosteroid allopregnanolone...Heart disease begins at a young age
...arently disease-free young people. Atherosclerosis occurs when fatty substances, such as cholesterol, or other materials deposit along the inner lining of an artery. These deposits can build up, leading to blockages that restrict the flow of blood in the arteries and can cause a heart attack. "In this part...New drug shows promise for saving lives from heart failure
...to meet the needs of other organs in the body. It occurs in hearts that are damaged or overworked after a heart attack, high blood pressure, heart valve disease, congenital defects or infection of the heart or its valves.Drugs used to treat heart failure include digitalis, which increases the heart's pumpi...Copper-lowering drug stabilizes advanced cancer in anti-angiogenesis trial
...lp with the normal growth of children's bodies. It occurs through a so-called angiogenesis "cascade" - a series of biochemical steps by which cells make and secrete molecules that initiate the growth of capillaries. After the job is done, other molecular "factors" turn off the angiogenesis process. But c......e U.S. The symptoms of MS result when a breakdown occurs in the myelin sheath that insulates the nerve fibers of the brain and spinal cord, resulting in patches of scar tissue, or "sclerosis." When demyelination occurs, nerve impulses are slowed or halted which can cause symptoms ranging from numbness in ...El Nino increases diarrheal disease incidence by 200%
... the warming of the equatorial Pacific ocean which occurs every two to seven years -- has been linked to outbreaks of dengue, malaria, and cholera. Now, researchers from the Johns Hopkins School of Public Health, A.B. Prisma, and the Instituto Nacional de Salud in Lima, Peru have found that the 1997-1998 E...Most acquisition of meningitis bacteria among students occurs in first week of university term
... Most acquisition of the bacteria for meningitis occurs during the first week of the university term, reports research in this week's BMJ. A study of 2,500 first year Nottingham University students, led by Neal and colleagues of the University's Department of Public Health Medicine, showed that the carri...Map makers can avoid confusing the color blind
...l types of color blindness is that color confusion occurs along lines through the full color space enclosed by the spectrum. Different sets of confusion lines are specific for the type of color blindness. Luckily, the confusion lines for both types of red/green color blindness, while different, are similar ...Purdue 'stealth compounds' attack cancer cells
...u must first assemble. A similar situation often occurs in treating cancer, because the components needed to put the brakes on the cells' abnormal growth can be readily delivered through the cell membrane only in pieces that then must be assembled by the cell. Scientists at Purdue University have develo......h aging, Larsen says. Benign prostatic hyperplasia occurs when cells proliferate in the gland, causing enlargement. The gland can continue to enlarge later on even when cell proliferation decreases because cells do not die "on cue," he says. If treatment isn't done early enough or have lasting benefits, sur...Making kidney transplants last longer: Large UM study finds newer drug is better
...s even if their new kidneys fail, which on average occurs nine years after transplant. Kidney losses for oth... leading to loss of the transplanted kidney, often occurs because enough lymphocytes are still available to attack the transplanted organ and because of other...Experimental drug reverses effects of Fabry disease in mice
...ood vessels of patients with Fabry disease. Death occurs in early adulthood from renal failure or cardiovascular complications. For the past 10 years, U-M researchers have been developing and perfecting a family of glycolipid synthesis inhibitors for use in Fabry disease, according to Shayman. "Other res...New drug works well as sole epilepsy therapy for difficult-to-treat patients
... of its most common symptoms is the seizure, which occurs when certain brain cells release too much electrical energy and trigger a sudden loss of control over movement, thought or awareness. The most common type of seizure, occurring in up to 70 percent of seizure disorders, is a partial seizure, which beg...The bone marrow is the source of mature liver cells
...s that proves for the first time that this process occurs in humans. "We have proven that in humans there are stem cells for the liver in the bone marrow," says Neil Theise, M.D., Associate Professor of Pathology at New York University School of Medicine, the lead author of the new study. "These cells...OHSU researchers capture cell transmissions on tape for first time
...f neural communication. The release of transmitter occurs through a process called exocytosis. "Synapses allow cells to talk and listen to one another. What we have witnessed and videotaped is the talking portion of this minute conversation," said Almers. In addition to exocytosis, Almers' lab was able t...Process may help scientists find new antibacterial drugs
...as the world's foremost malaria treatment. Quinine occurs naturally in a tree bark, and like many naturally occurring compounds, is enantiomerically pure -- it is made up of only one enantiomer. Enantiomerically pure compounds are generally expensive, Lectka notes, but with a small amount of quinine, a larg...... narcosis is attributed to the depth of a dive and occurs when divers become disoriented and, in rare cases, become unconscious. It can be remedied by ascending back to the surface of the water. Decompression sickness is associated with the length of a dive and is caused when nitrogen bubbles arise in the...Transgenic mice aid research into deadly cancer
...ted a 'mini-gene' that reproduces the cancer as it occurs in people," says Herbert C. Morse III, M.D., chief of the immunopathology lab at the National Institute of Allergy and Infectious Diseases (NIAID). The results of this work, supported by NIAID and the National Cancer Institute (NCI), are detailed in...FDA awards grant to metaphore pharmaceuticals to study septic shock in humans
...e dramatic and perplexing blood pressure drop that occurs during septic shock and leads to death in up to 50 percent of cases. Researchers from MetaPhore and Saint Louis University School of Medicine will study the levels of two key biological markers, one of which directly affects blood pressure, to see ...