ScienceDaily Health Headlines
for Saturday, August 9, 2008
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Multi-tasking Molecule Holds Key To Allergic Reactions (August 8, 2008) -- As the summer approaches most of us rejoice, reach for the sunscreen and head outdoors. But an ever-growing number of people reach for tissue instead as pollen leaves eyes watering, noses running and spirits dwindling. Hay fever is just one of a host of hypersensitivity allergic diseases that cause suffering worldwide and others, such as severe reactions to bee stings or eating peanuts, can be more serious and even fatal. ... > full story
Back To The Future: Psychologists Examine Children's Mental Time Traveling Abilities (August 8, 2008) -- Planning and anticipating occur so frequently in our everyday lives that it is hard to imagine a time when we didn’t have this capability. But just as many other capacities develop, so does this mental time traveling ability. Researchers have recently explored how children comprehend the future and ways that this understanding can be affected by, for example, their current physiological state. ... > full story
Twenty Disease-specific Stem Cell Lines Created (August 8, 2008) -- A set of new stem cell lines will make it possible for researchers to explore ten different genetic disorders—including muscular dystrophy, juvenile diabetes, and Parkinson's disease—in a variety of cell and tissue types as they develop in laboratory cultures. Researchers have produced a robust new collection of disease-specific stem cell lines, all of which were developed using the new induced pluripotent stem cell (iPS) technique. The new iPS lines, developed from the cells of patients ranging in age from one month to 57-years-old, will be deposited in a new HSCI "core" facility being established at Massachusetts General Hospital. ... > full story
Attention Grabbers Snatch Lion's Share Of Visual Memory (August 8, 2008) -- Our visual memory is not as good as we may think, according to new research -- but it can be used more flexibly than scientists previously thought. In a study in the journal Science, researchers have shown how we remember what we see and why we can recall visually important or striking images most clearly, using a topical example of a relay race to illustrate the concept. ... > full story
New Biochemical Pathway That Triggers Critical Repairs In DNA Replication Process Discovered (August 8, 2008) -- Scientists have unraveled a new biochemical pathway that triggers a critical repair response to correct errors in the DNA replication process that could otherwise lead to harmful or fatal mutations in cells. Though the work focused on yeast cells, the team expects to find an analogous system in human cells that could be exploited as a target for potential therapies for cancers, which are often caused by such repair mechanisms going off course. ... > full story
Fingerprints Provide Clues To More Than Just Identity (August 8, 2008) -- Fingerprints can reveal critical evidence, as well as an identity, with the use of a new technology that detects trace amounts of explosives, drugs or other materials left behind in the prints. The new technology also can distinguish between overlapping fingerprints left by different individuals -- a difficult task for current optical forensic methods. ... > full story
B Cells Can Act Alone In Autoimmune Disease (August 8, 2008) -- B cells, the source of damaging autoantibodies, have long been thought to depend upon T cells for their activation and were not considered important in the initiation of autoimmune diseases like lupus or rheumatoid arthritis. An article in the journal Immunity turns this paradigm on its head by showing that in systemic autoimmune diseases B cells can be activated the absence of T cells. ... > full story
Extreme Appeal: Voters Trust Extreme Positions More Than Moderate Ones, Study Finds (August 8, 2008) -- Trying to appear moderate is not always the best strategy for capturing votes during an election, reveals a new study. Extreme positions can build trust among an electorate, who value ideological commitment in times of uncertainty. "A rational electorate is reluctant to support someone who does not exhibit commitment to some ideology," says USC economist Juan Carrillo. "Voters rightly perceive that someone without ideological commitment cannot have developed a valuable political program." ... > full story
Embryonic-like Stem Cells Can Be Created Without Cancer-causing Gene (August 8, 2008) -- Embryonic-like stem cells can be efficiently generated using a natural signaling molecule instead of the virally delivered cancer-causing gene c-Myc. The results represent progress in overcoming hurdles to the potential use of reprogrammed cells for stem-cell-based therapies in humans. ... > full story
Beijing Olympics Air Pollution Control Efforts Being Assessed (August 8, 2008) -- Flying downwind from Chinese mainland, unmanned aerial vehicles will measure emissions of soot and other forms of black carbon during China's "great shutdown." ... > full story
Tumor Suppressor Inhibits Cell Growth (August 8, 2008) -- Researchers have described the mechanism by which p53 regulates cells and protects them against DNA damage that might lead to cancer. The study shows that two p53 target genes -- called Sestrin1 and Sestrin2 -- provide an important link between p53 and a protein kinase called mTOR, a central regulator of cell growth. ... > full story
Healthy Diet Study Will Take Place Entirely In Virtual World Of Second Life (August 8, 2008) -- The University of Houston department of health and human performance is launching an international effort to recruit 500 participants for a study promoting healthy dietary habits and physical activity. The study will take place entirely in the virtual world of Second Life. ... > full story
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