Discovery Could Help Understand Breast-Cancer Therapies
... the hormone," BenitaKatzenellenbogen said. "We've shown that if one alters one of thesefour amino acids then one eliminates the ability of estrogen to bind, andas a consequence one also eliminates the ability of these receptors to actas transcriptional regulators." The research, funded by the National In...Researchers Find Genetic Clues To Intestinal Disease
... published studies, Johns Hopkins researchers have shown that an intestinal disease affecting 400,000 people in the United States is actually a variety of related disorders that can be inherited and cause similar symptoms in close relatives. The findings will help physicians predict who will get the diseas...Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...illion years. Studies of Vostok's ice have already shown a close link between climate over the past 200,000 years and changing concentrations of greenhouse gasses in the atmosphere. The drillers plan to halt at approximately 3650 meters depth, stopping above Lake Vostok, the subglacial lake beneath Vostok......ing. Components of cigarette smoke also have been shown to cause breast cancer in rodents. To investigate the possibility that slow-versus-fast acetylation could affect the incidence of breast cancer among smokers, the researchers used data from an earlier case-control study of the disease. Extensive da...Animal Studies Indicate Aging Brain Responsive To Estrogen
...behavioral findings from Williams' lab had already shown that olderfemale rats' spatial memory is improved by estrogens administered in a cyclicfashion. These findings led to the cellular studies in Einstein's lab thatnow suggest a mechanism for this improvement in memory. In the study, the team used agin...Medicinal Leech May Offer Clues To Neural Regeneration
...neurons reconnect after injury, but they have been shown capable of making the right connections to fully restore motor function," she says. Humans and other vertebrates, by comparison, have only limited capacity to restore neural growth or function. One problem with studying neural regeneration in vertebr......sion, toddlers also wereasked to find the cat when shown slides of both a cat and a shoe, forexample. Rese... said. While language development has been shown to be slightly delayedin some twin studies, that was not the case in the MacArthur study,Professor R...Bacterial Protein Structure Hints At Mechanism Of A Class Of Premature Aging Diseases
...in that direction. The Duke researchers have shown that the RTP, rather than simply actingas a road block to replication, actually interacts with the helicase protein. "That's a major controversy in this field," White said. Acompeting theory, published in the Oct. 17, 1996, issue of the journa...Selenium Supplements Can Reduce Cancer Rates
... in the world. "This is the first time anyone has shown that any single nutrient can result in such a reduction in cancer risk. The fact that we saw a pattern in lower incidence and mortality rates across all the clinics gives us even greater confidence in these findings." Prostate, esophageal, colorecta...Penn State Wetlands Project Seeks Scientific Evaluation Criteria
... of 51 natural wetland sites in Pennsylvania have shown this to be true. Brooks, director of the Penn State Cooperative Wetlands Center, says Pennsylvania is losing hundreds of acres of wetlands per year to development and other uses. Simultaneously, state agencies, private companies and private cit...President's Budget Proposal Cuts R&D By 14 Percent By 2002
...ongress and the Administration since July 1995 has shown some improvement over previous projections in terms of future support for R&D programs," said Al Teich, director of the AAAS Science and Policy Programs . "Improved economic forecasts and concerted efforts to protect R&D have helped diminish some ...Cell-Membrane Proteins Appear To Play Key Role In Squid's Swiftness
...g behavior and may partly explain the intelligence shown by octopuses. The key element of the findings, say University of Illinois and Stanford University scientists,involves sodium channels proteins in nerve-cell membranes that generatethe electrical impulses that buzz along axons in the brain du...Virus May Be Linked To Obesity -- Early Findings Hint At Relationship
...nd. A preliminary study of 199 people has shown that as many as 15percent of obese people may carry antibodies to the virus, indirectevidence that they once were exposed to the virus itself. None of the leanvolunteers tested had the antibodies. Dr. Nikhil Dhurandhar described the findings......This has strong implications," said Gale. "We have shown that PKR is important in the interferon response."...ted through blood and shared needles, studies have shown that about 40 percent of carriers do not report such risk factors. The nation's blood supply has bee...Project Shows Native Bacteria Can Destroy Widespread Pollutant In Groundwater
...isms to break down toxic chemicals. "The test has shown that this method can successfully reduce the levels of TCE in groundwater by 96 to 98 percent," said Perry L. McCarty , the Silas H. Palmer Professor of Civil Engineering who heads the project, report in a at the American Chemical Society meeting in...Teens Shop "Healthy", But Trust Label Claims Too Much
...abel claims is not unusual. Previous studies have shown that adult shoppers also rely on the claims. She says that both teenagers and adults may be put off using the nutrition labels by the math required to convert the serving size on the package to the actual amount consumed. Achterberg and colleagues...Children With AD/HD Have Significant Functional Disabilities Related to Attention Deficit
...at Buffalo and Children's Hospital of Buffalo have shown that children diagnosed with attention deficit/ hyperactivity disorder (AD/HD) have as much functional disability as children with mild mental retardation and are not merely exhibiting "inconvenient" behavior. Results of the study were presente...Researchers Find Production Point Of Key Protein In Fragile X Syndrome
...usresearch based on autopsies of human victims had shown immature synapseformation, but that work had not revealed the impairment of the synapsepruning process, in which excess synapses are deleted. While stressing that new treatments for fragile X syndrome won't immediatelyresult from the findings, Green...Newly Identified Tomato Gene Appears Key To Fruit Softening
... LeExp1, is a member of a family of genes formerly shown tocoordinate production of proteins appropriately named "expansins."These expansin proteins, identified so far in cucumbers, rice, tomatoesand the research plant Arabidopsis, work by loosening the plant cell wallsand allowing the cells to elongate du......ors of the study. "Since viable bacteriahave been shown to be excreted in feces from infected individuals andhouseflies habitually develop and feed on excrement, we hypothesizedthat flies ingest and harbor H. pylori and in turn contaminate the humanenvironment." In the study the researchers exposed...