Seeing stars after LASIK? Study suggests certain pre-surgery factors may be to blame
...showed that these symptoms may persist in some patients long after the eye heals. Such symptoms seemed to be linked to having had the surgery repeated, said Melissa Bailey, a study co-autho...Hebrew University and Ben-Gurion researchers find that stress causes shift in gene products
...perience translates into neurological changes that persist even after a considerable lapse of time. Researchers at The Hebrew University of Jerusalems Roland Center for Neurodegenerative Diseases and at Ben-Gurion University, in work on experimental mice, have now found evidence, which will be published on J...Wild jaguar photographed in Arizona
...ra region of Mexico to see if this population will persist and perhaps repopulate parts of the southwestern United States." Although never plentiful in the southwestern United States, jaguars did inhabit the area before being largely eliminated as a result of human persecution. Fewer than 20 sightings of jag...Genetics, stress and environmental cues influence relapse drinking
...ng produces long-lasting effects in the brain that persist in the absence of alcohol and promote alcohol rela...al systems," said McBride. "Some of these changes persist in the absence of alcohol, resulting in imbalances in neuronal systems within the brain. These imba...Hemophilia trials, other studies may herald successful gene therapies for human diseases
...ere found in a patients semen. This result did not persist beyond a few weeks, and new safety studies indicated that gene transfer probably does not occur in the sperm cells. Gene therapy researchers must strictly avoid altering the DNA of germ line cells, such as sperm, to avoid the potential of transferrin...Is the evidence for human 'replacement' really clear?
...ology, commonly described as Aurignacian) seems to persist both before and long after the accepted transition boundary, again depending on locality. These changes really follow a much more complex temporal and spatial mosaic pattern, said Clark. They dont show up in Europe in a neat package at around 40,000 ...Selenium: an insidious and persistent toxin
... Lemly and other researchers show that ill effects persist long after the source of pollution is gone. "Selenium poisoning in fish can be invisible for a time," said Lemly, "because the primary impact is on the egg, which receives the toxin from the mother's diet. When the eggs are hatched, the developing fi...Anticonvulsant drugs found to impact on epileptic childrens ability to recall information
... together, form a cell-assembly whose activity can persist after the triggering event and serves to represent it; and 3. Thinking is the sequential activation of sets of cell-assemblies. Consequently, learning can be defined as the process by which an organism benefits from experience, so that its future b...Need, potential for Hepatitis C vaccine highlighted by Hopkins study
...itis C virus, those infections were less likely to persist compared to animals infected for the first time, according to David L. Thomas, associate professor of medicine at Hopkins and lead author of the study. "We found the same in humans, suggesting that humans can acquire immunity that protects against he...Preeclampsia linked with higher risk of preterm delivery
... but that the negative effects of preeclampsia may persist even though the condition itself is not present in... the uterus a possible cause of preeclampsia may persist even in the absence of clinical preeclampsia. Women who have previously experienced preeclampsia, al...Loss of lean body mass in HIV-infected men linked to immunological processes
...body mass and rise in REE indicative of cachexia persist even with aggressive antiretroviral therapy. Reveals that catabolic cytokines tumor necrosis factor and interleukin, interacting with free testosterone, are important determinants of change in LBM and REE. concludes that the similarity of finding...Molecular clues to an inherited epilepsy
...egin in association with febrile illness, but then persist beyond the age of six and/or occur in the absence of fever. The investigators sought to understandat the level of individual sodium channel moleculesthe functional consequences of mutations that cause GEFS+. They isolated the human SCN1A sodium chan...Abnormal chemical bonds cause bleeding disorder
...e a defective form of vWF causes chemical bonds to persist longer than they should, thereby holding vWF and blood platelets together in flowing blood when they shouldn't. That is, the defect in the vWF protein changes the kinetics of the chemical bonds that form between the protein and the platelets. "This i...Complex gene-swapping spawns a form of lymphoma
...ion. When DNA repair fails, broken chromosomes can persist and recombine inappropriately with other chromosomes. This leads to chromosomal translocations where genes or whole chunks of the genome are swapped from one chromosome to another. "Complicons are commonly seen in human carcinomas, in which very com...'Rock-paper-scissors' preserves biodiversity in bacterial neighborhoods
...ractions and dispersal localized might allow it to persist over time because it essentially has a refuge from...rs are now exploring whether genetic diversity can persist throughout the long time scales required for evolution. One new idea they are testing is "survival o...Scientists find cause of dead crabs, fish off coast
...s allows the low values of oxygen at the bottom to persist and intensify, in effect, smothering much of the sea life in the area. "If this happens for a day or two, the fish and crabs probably survive," Grantham said. "But over a period of time, perhaps 3-5 days or longer, the oxygen deprivation becomes dea...18F-FDG PET predicts lymphoma treatment outcome
...particularly helpful in lymphoma, where tumors can persist after successful treatment. Conventional imaging with CT or MRI has difficulty differentiating between residual masses harboring tumor and those that are scar tissue. Determining at what point during chemotherapy a PET study should be ordered is a ...New findings change understanding of adult stem cells
...nvironment where stem cells and neurogenesis could persist throughout adult life, at least in certain locations." Forging ahead, Morrison's group isolated NCSCs from the gut tissue of adult rats, cultured those cells and then introduced them into chick embryos to explore properties of the NCSCs. These studie...Stem cells found in adult peripheral nervous system
...st stem cells are doing in the gut or whether they persist into adult life in humans, as they do in rats," sa...hat it provides the first evidence that stem cells persist in the adult peripheral nervous system. Our results will lead to additional research, which could le...Would 'race' disappear if the United States officially stopped measuring it?
... explaining how and why social definitions of race persist and change." Sociologists also seek to explain the nature of power relationships between and among racial groups and to understand more fully the nature and evolution of belief systems about race--the dimensions of how people use the concept and appl...