Tag: "sudden" at biology news
Is the roller coaster G force threat all spin?
...predict head accelerations in roller coasters the sudden
twists and turns we find that they are well within established safety margins. It does not appear that roller coasters produce high enough forces to mechanically deform and injure the brain." Using a simple mathematical model, the researchers exam...
Teen angst rooted in busy brain
...vious studies have shown that puberty is marked by sudden
increases in the connectivity of nerves in parts of the brain. In particular, there is a lot of nerve activity in the prefrontal cortex. "This plays an important role in the assessment of social relationships, as well as planning and control of our s...
JGI to decode DNA of destructive plant pathogen
...tophthora is a fungus-like microbe responsible for sudden
oak death syndrome, soybean root rot, and a wide v...m, the recently identified microbe responsible for sudden
oak death, and P. sojae, which causes soybean root rot, resemble fungi but are actually Stramenopile...
Sex-pheromone link to insect evolution
...ofs. The presence of this kind of gene, capable of sudden
activation, might provide a mechanism for resistance to occur, although no evidence for this has been found so far, he notes. Roelofs expects this discovery to stimulate more research in this area, specifically to determine the breadth of the phenome...
New predictor of heart disease risk found
...at heart disease and other ills, including stroke, sudden
death and peripheral vascular disease. Now, UC Davis physicians have discovered that this protein is not just a marker for heart disease, but that it actually damages the blood vessel wall by blocking a critical "protector" protein and by promoting p...
Gene variant increases risk of cardiac arrhythmia for African-Americans
... disorder, called long QT syndrome, that can cause sudden
death. "Almost nothing was known about the effects of polymorphisms on cardiac arrhythmias, but we were among those predicting that variants would be discovered that were reasonably common and would have a subtle effect on arrhythmia risk," said Keat...
Gene could hold key to predicting, combating life-threatening abnormal heart growth
...ythm. Cardiac hypertrophy frequently is a cause of sudden
death among young athletes, who suffer cardiac arrest due to enlarged hearts without ever knowing they had the condition. "Stress accelerates hypertrophic growth, and HDAC9 functions to restrict cardiac growth," said Olson. "If HDAC9 isn't present, i...
Reversing the sounds of silence
...ss with rescuing the hearing of some patients with sudden
hearing loss if we can treat them within 4 to 5 weeks of their sudden
hearing loss, but this remains a difficult area."...
Retroviruses shows that human-specific variety developed when humans, chimps diverged
... on the organismic level. The idea of a relatively sudden
genetic change that alters evolution isn't new. Sc...proposes that evolution has depended more often on sudden
and unexpected changes in genomes rather than a simple Darwinian paradigm of gradual evolutionary ch...
Scientists find cause of dead crabs, fish off coast
...pheric events may be to blame for a mysterious and sudden
die-off of numerous crabs, fish and invertebrate animals off the central Oregon coast during the past two weeks. Oregon State University researchers who are studying near-shore ecosystems say extremely low oxygen levels - especially in the lower wat...
Researchers develop mouse model of Rett syndrome
...f life. Then, as the infant reaches toddlerhood, a sudden
and dramatic decline in physical and mental capabilities takes hold, accompanied by onset of seizures, irregular breathing, awkward gait, and hand-wringing. "I know of no other neurological disease that gives this distinctive stereotypic behavior -...
Three studies released this week shed new light on eating nuts for good health
... nuts with a lower risk of Alzheimer's disease and sudden
heart attacks. Two studies published in the Journa... least twice a week had a 47 percent lower risk of sudden
cardiac death and a 30 percent lower risk of coronary heart disease death, as compared to those who ...
Silvereye birds help scientists to settle disputed evolutionary theory
...he formation of new species is a gradual and not a sudden
process, according to biologists from the UK, France, Australia and the USA writing in the Proceedings of the National Academy of Sciences today (28 May issue). The 'founder effect' theory, a controversial idea among biologists, says that speciation ...
Worms point the way on nerve disease
...an dystonia gene works. People with dystonia have sudden
muscle contractions that force the body into abnormal and painful postures. It is the second most common neurological movement disorder, after Parkinson's Disease, affecting about half a million people in the U.S. and Canada. Scientists think that de...
Obesity may exacerbate a heart disorder in African American females
...re at risk for syncope (loss of consciousness) and sudden
death, often at a young age. Although it is known that African Americans have a higher incidence of obesity compared to Caucasians, race-specific information is not available for the prevalence of LQTS. Furthermore, while it is well known that chr...
Tibetans retain resistance to the oxygen-deficient disorder hypoxia regardless of altitude
...poxia can be caused by external factors, such as a sudden
arrival in Tibet, or by "internal impairments," within the body where cells receive insufficient oxygen. Regardless of the cause of the hypoxia, a wide range of disorders may occur. How can Tibetans function normally at altitudes that would eventu...
Study suggests mechanism for heart defect that kills young athletes
The most common cause of sudden
death in young athletes a heart condition known a... new model of what might be going wrong in cardiac sudden
death of young athletes. This little fish seems to have a lot to teach us, said Didier Stainier, PhD...
Extensive research survey confirms life on Earth now being affected by global warming
...imate will change there." The study reveals that sudden
climate events that have an extreme local effect c... unusual warm season, or if there is an unforeseen sudden
climate change, then past climate history would become irrelevant as a tool for predicting what will...
Stanford scientist seeks participants in NASA hypergravity study
...spells when they try to stand up - the result of a sudden
drop in blood pressure caused by the failure of the cardiovascular system to provide an adequate supply of blood to the brain. Some space travelers are unable to stand for long periods of time when they return to Earth, while others undergo leg muscl...
Behind the big dry
...c warmed abruptly and stayed warm, and there was a sudden
warming in sea surface temperatures in the Indian Ocean. Since then there have been unusually frequent, persistent and intense El Ninos, and fewer La Ninas. Working from global atmospheric data, the researchers have been trying to work out what this ...
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