Braille reading strategies may enhance stimulation of the brain responsible for vision
...l in both subject groups. There was no evidence of modifications in frontal cortex language areas (inferior frontal gyrus and dorsolateral prefrontal cortex). Surprisingly, there was also no evidence of an adaptive expansion of the somatosensory or primary motor cortex dedicated to the Braille reading finger(s)....New species clarifies bird-dinosaur link
...f the paper. It demonstrates that major structural modifications toward birds occurred much earlier in the evolutionary process than previously thought. Furthermore, these findings help counter, once and for all, the position of paleontologists who argue that birds did not evolve from dinosaurs, he adds. The foss...Long-distance command sends human growth hormone into action
...ultimately opening the growth hormone itself. "The modifications migrate through the chromatin in some way that we do not yet understand," Cooke said. Added Liebhaber, "Now we're studying the mechanism through which this signal spreads."Yugong Ho, PhD, the lead author on the paper, and Felice Elefant, PhD, both p...New light on molecular switch that turns genes off
...be part of an emerging 'molecular code' of histone modifications that ultimately regulate these processes. "We believe that methylation and other modifications that affect histone proteins (acetylation, phosphorylation) are all dynamically involved and play cr...Kingston named Virginia Outstanding Scientist of 2002
...e incorporated this modification, along with other modifications of their own, in developing new compounds that are in clinical trial. "Our discovery is a key part of these new compounds" Kingston said. Much of Kingstons work has been done in Suriname, a country rich in biodiversity. While doing chemical work wit...For the longest distance runner, that tired feeling may not be due to central fatigue
... few exceptions, neurophysiological and mechanical modifications in PF and KE were comparable. This leads the researchers to believe that, in an ultramarathon, fatigue is task dependent, and has very specific effects on neuromuscular properties compared with a shorter duration of fatiguing exercise....Dietary changes can lower colon cancer risk in families with a history of the disease
...s have shown that a variety of diet and behavioral modifications such as stopping smoking, eating a diet high in fruits and vegetables, avoiding heavy red meat consumption, and having regular colon exams after age 50 can reduce colon cancer risk in the general population. In the new study, Fuchs and his colleagu...Mississippi and Missouri River flood levels underestimated
...technique that isolates the effects of engineering modifications of rivers. Looking at the Mississippi and Missouri Rivers, he's found that the same quantities of water have systematically caused greater floods because of the effect of human structures built along these rivers. These constructions push flood stage......ty," said Peterson. "This is important because the modifications affecting our climate are like a big experiment th... gases over the next 50 years, which predict major modifications of Mexico's climate, with higher average temperatures and lower rainfall. The third component of th...Researchers project future shrinking biodiversity of Mexican species
...y," said Peterson. "This is important because the modifications affecting our climate are like a big experiment the whole world is doing without knowing what's going to happen." For example, the west Mexican chachalaca, a bird found only in tropical southwestern Mexico, may be greatly affected by changing clim...UB study finds early nutritional modification programs metabolism, predisposes to obesity
...hown that pre- and immediate postnatal nutritional modifications have long-term consequences on adult-onset diseases. "Metabolic signals are reset in response to a high carbohydrate diet, which induces permanent changes at the molecular level in our rat model," Patel said. "The HC phenotype is transferred from c...Two genetic suspects are identified in the mystery of why we need to sleep
...mple, findings may suggest treatments and behavior modifications that eliminate or minimize the impacts of: Night shift work Sleep disorders Jet lag to name a few The next research phase of Shaw and his colleagues, Ralph Greenspan and Donald Robinson, at The Neurosciences Institute, is to pin down the mecha...New computer model promises detailed picture of worldwide climate
...mber of vertical layers." To achieve the extensive modifications in the latest version, which was released last month, scientists applied the model to specific problems. For example, they weighed the climatic impacts of past volcanic eruptions, fluctuations in ocean salinity, changes in land vegetation, and the t...Scientists discover chromatin-modifying enzyme crucial for normal development
Over the past few years, covalent modifications of histone tails have emerged as an important mechanism of gene regulation in eukaryotes. Now, scientists have identified a major euchromatic histone methyltransferase in mammalian cells that is crucial for normal embryonic development, and possibly ...Plant chemicals benefit both health and home
...s. Producing a marketable soybean oil with the new modifications is the focus of their research because of the many other health benefits of soy. (This paper, AGFD 175, will be presented at 10:05 a.m., Thursday, Aug. 22, at Marriott Copley Place, Salon C.)...Essential cell division 'zipper' anchors to so-called junk DNA
... could not bind to the DNA at that site. Why these modifications might take place at some Alu sites and not others ... suggests that a system of complex, interdependent modifications to histones is responsible for regulating access to DNA and genes. "The idea that a kind of code of ...DNA separation by entropic force offers better resolution
...r own nanofabricated device, and demonstrated that modifications would make it possible to separate strands of many different lengths. A description of the experiment is scheduled to be published in the Oct. 1, 2002, issue of the journal Analytical Chemistry by graduate student Mario Cabodi, postdoctoral researc...SMU and UNC researchers make an advance in our understanding of gene regulation
...trated that E(Z) silences genes by making specific modifications to a particular chromatin protein and that this mechanism is the same in both humans and Drosophila. "This is a fundamental discovery about how chromatin can repress gene expression," said Larry Ruben, chair of the Department of Biological Scienc...Physics tip sheet #29 October 23, 2002
...e the best strategy for winning even under various modifications of the rules and scoring system. Preprint: http://www.arxiv.org/abs/cs.CC/0210020 7) Surfing chemical reactions J. Wolff, A. G. Papathanasiou, H. H. Rotermund, G. Ertl To appear in Physical Review Letters Chemical reactions can surf on a wave of......overed." It may well be that methylation and other modifications of histone proteins are part of an emerging "histone code" of modifications that ultimately regulate gene expression. This code was postulated three years ago by Drs. David Al...