Mechanism behind stuttering revealed
...ontrols. Fibre tracts in this region connect brain structures involved in the articulation and planning of speech, which could explain how disturbed signal transmission in this area prevents fluid speech production. The authors comment that: "This abnormality probably develops during the period of early languag...Important advances in the development of drug delivery vehicles
...d other types of aggregates, which are microscopic structures that have potential applications in the delivery o...uld be as thick as a human hair. These microscopic structures are prepared from synthetic polymer chains, and consist of a thin "skin" of hydrophobic (water-repe...Boston chemist wins national award for tailor-made molecules
...e assemblies. They also usually come in two forms, structures that are identical except one mirrors the other, like a person's hand. The differences can be critical. For example, one form of naproxen (marketed as Alleve) reduces pain; its mirror image is toxic to the liver and thus cannot be included in the dru...Pennsylvania chemist wins national award for pharmaceutical research
...y is drugs that are chiral, or "handed"-- that is, structures that are identical except that one is the mirror image of the other, like a person's hands. The difference can be critical in the body. For example, one form of naproxen (marketed as Alleve) reduces pain; its mirror image is toxic to the liver and th...Philadelphian wins national organic chemistry award
...nins as found in tunicates but also modified their structures to enhance their activity against tumors. Her interests range widely. Among her other achievements is a simple, inexpensive compound that can make previously invisible fingerprints glow fluorescent. She and her research team have also attached fluor...PET/CT scanning now available at Fox Chase Cancer Center
...llows physicians to see the internal or anatomical structures within the human body. Together these two technologies make up the revolutionary PET/CT scan that enable Fox Chase physicians to view metabolic activity and pinpoint the location of abnormal lesions to target the disease more precisely. "When used...Medical school leadership urges race-based consideration
...f systems, cultural biases, ethnic origins, family structures and a host of other culturally determined factors influence the manner in which people experience illness, adhere to medical advice and respond to treatment." Citing 1999 statistics, the article says that while African-Americans and Hispanics each ma...Dartmouth researcher Michael B. Sporn, M.D. honored for pioneering work in cancer prevention
...as recently begun to study certain triterpenoids - structures occurring in hundreds of plants all over the world, which have been found to have interesting biological, pharmacological, and medicinal activities. The development of a potent new plant derivative called CDDO is evidence of the success of this new a...Brain shrinkage in ADHD not caused by medications
...y motion in the scanner. Volumes of various brain structures and tissue were measured and analyzed by an automa... group had earlier thought that only certain brain structures were smaller in ADHD, this largest and most sophisticated study found that the whole brain is affect...Researchers discover 'doorways' into brain cells
...sent the first of a series of specialized membrane structures dedicated to anchoring, sorting and trafficking of proteins in the postsynaptic membrane or the dendritic spines," said Ehlers. "We could end up developing an entirely new 'microanatomy' of neurons."...Penn State College of Medicine awarded $6.9 million to create clearer images of body's interior
...ecise images of the brain, tumors, organs or other structures in the body," Smith said. "Improving the quality o...adio frequency waves to visualize organs and other structures in the body. The strongest MRI magnet approved for human use is 3 tesla, but most standard high-fiel...New horizons in cortical cartography
...rtical maps will show the locations of the brain's structures and functional subdivisions," says Van Essen. "Our atlases represent the most accurate and comprehensive maps of cerebral and cerebellar cortex available for humans, macaque monkeys and mice." Macaque monkeys are the most intensively studied nonhuman...By repairing vessels, bone marrow cells slow atherosclerosis in mice
...g arteries, the scientists measured the lengths of structures at the end of chromosomes known as telomeres of the endothelial cells and found that they were longer in the treated mice than the untreated mice. Over time, telomeres are known to shorten as the organism ages. "These experiments support the new conc...NIH funds new brain imaging center at San Francisco VA Medical Center
...ancisco. "This system will allow us to see smaller structures in the brain," Weiner said. The system measures different chemicals in the brain non-invasively and without the use of dyes or tracers. For example, it can measure the levels of glutamate, the neurotransmitter suspected of playing a role in Alzheimer...For determining protein structures, a new method boosts precision and speed in high-dimensional NMR
...he use of high-throughput NMR to determine protein structures with the ultimate goal of developing new medicines...esponsible for determining about 20 percent of the structures in the Protein Data Bank, the international repository of solved protein structures, whereas the oth...Brain images reveal effects of antidepressants
... to learn exactly how the medications affect brain structures and circuits to bring relief from depression. Researchers at the University of Wisconsin-Madison and UW Medical School recently added important new information to the growing body of knowledge. For the first time, they used functional magnetic reson...San Diego chemist wins national award for innovative drug design
...meeting in New Orleans. "What I seek are beautiful structures in nature, those molecules that offer architectural novelty and a challenge, and then I find a way to make them in the laboratory," said Nicolaou, who holds joint appointments at the University of California, San Diego, and the Scripps Research Insti...Improved molecular beacons show promise for cancer detection, rapid viral diagnosis
...optical or magnetic signals as the nanometer-scale structures latch onto the unique genetic sequences that are markers for the disease. Believed to be the first technique for imaging RNA in living cells, a new class of beacons under development at the Georgia Institute of Technology and Emory University also ...Bonds strengthened on mechanically linked molecules
...guests (think rings on a rope as one example). The structures are building blocks for improved polymers. Now a V...lecular capsule. As with other such supramolecular structures being designed by a host of scientists, the non-covalent bonds that form the structure can be revers...Brookhaven spotlights: News from the March 2003 American Chemical Society Meeting
...ight reorganize itself. "Nanometer-sized molecular structures are made of 'bundles' of molecules, so it is challenging to understand how electrons move around them," Newton says. "What we have found shows that we still need a better understanding of electron transport before we can construct the basic circuit e...