Early Tests Indicate Motor Skills Unharmed In Consumers Of Tainted Fish
...nd to accumulate in bodyfat." Animal research has shown that PCBs (polychlorinated biphenyls) -- agroup of industrial chemicals toxic in the environment -- decrease dopaminelevels in the brain. In Parkinson's disease, too little dopamine contributesto a reduction of motor function and executive abilities ...Calorie Restriction Reduces Age-Related Muscle Loss
.... "Laboratory studies by our team and others have shown that CR canreduce the rate of skeletal muscle loss with age, but the exact mechanismshave been unclear," said Aiken. Some scientists theorize that CR may reduce sarcopenia byinfluencing mitochondria, cellular energy factories. A restricted diet mayl...How Dry Is The Tropical Free Troposphere? Implications For Global Warming Theory
...liam Braswell of Nichols ResearchCorporation. have shown that the low humidity of the tropical free troposphereis playing a previously-overlooked central role in the dynamics of the atmosphere.The very low humidity in this region allows a larger portion of the infraredradiation to escape from the Earth, th...Scientists Bridge Gap In Cell Communication
...ess by which signaling governs wing growth. "We've shown that the MAD protein is a direct regulator of target gene transcription in response to a (specific) signal." The mapping of the communication pathways between cells is a fundamental quest in modern biology. Identifying the messengers -- a l...Jefferson Scientists Discover Mechanism Of Viral Link To Disease Commonly Associated With Asbestos
... Previous studies by other researchers had shown the presence of SV40 in animals and in some cas...he pRb2/p130 gene. To date, the treatment has shown success in animal studies and is about to enter phase 1 clinical trials in humans. Dr. Gio...CSIRO Discovery Fights Cell Ageing
... cells. Dr Robin Holliday and his colleagues have shown that Beta Alistine' (b alany l histidi ne) a subs...y. Sydney University's Dr Vivienne Reeve has also shown that Beta Alistine'maintains the skin's immune defences which are suppressed by exposure tothe sun's...Evolution Re-Sculpted Animal Limbs By Genetic Switches Once Thought Too Drastic For Survival
... changes in the control of homeotic genes havebeen shown to underlie an evolutionary trend leading to novel body structures. Nipam Patel, assistant professor of organismal biology and anatomy in theUniversity of Chicago's Howard Hughes Medical Institute, and Michalis Averof,currently at the European Molecu...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
...ent of genetic techniques and recent work that has shown that animals, as embryos, share the same genetic machinery that governs body architecture, the only recourse for understanding how animals evolved different kinds of appendages was in the realm of comparative anatomy. And appendages, said C...Research Team Discovers Key Gene For Telomerase Enzyme In Humans
...e as the newestcure for cancer. "Nothing has been shown to work yet," he said.......hen it will appearand how severe it will be is not shown just by the presence ofthe gene. In other, more complicated diseases, such as breastcancer and Alzheimer's, environmental influences play an importantrole in whether the person possessing the gene gets the disease."A person may have the gene that pre...No Link Seen Between Breast Cancer And Pesticides, PCB Exposure For General Population
...body over time. Some of these chemicals have been shown to increase estrogen activity in animals and consequently have been linked to breast-cancer risk. Moysich said the study results suggest that environmental exposure to organochlorines is related to the risk of breast cancer only in postmenopau...A New Biochemical Link Established Between Stress, Sex And Dominance
...led by Stanford neurobiologist Russell Fernald has shown that continuous high levels of a stress hormone, c...lty. He and members of his laboratory already have shown that for cichlid fish, social position determines physiology. It's not so much that the biggest, bri...One Chimp Can Perceive States Of Awareness In Others
CHICAGO -- A new study has shown that chimpanzees may be able to determinewhether their partners know they are in danger. This suggests that theseprimates are able to decide how ignorant or informed their peers are aboutan unexpected situation. The finding, made by a team of r...Researchers Discover First Animal Strain Of Hepatitis E Virus
... endemic. Nevertheless, recent studies have shown that upwards of 20 percent of healthy people in this country -- even those who have not traveled abroad -- have antibodies to hepatitis E virus or related agents in their blood. Similar evid...Molecular Piracy Turns Protein Into Traitor
...ocker of our chemokine system. Recent research has shown that twoof the chemokine receptors blocked by the new molecule, CCR5 and CXCR4, are co-receptors essential for HIV infection of human cells. This is the first naturally occurring chemokine antagonist. In humans, chemokines, also called chemoattracta...Study Sheds Light On Behavior Of Middle-Age 'Undertaker' Bees
...nd better at what they do." Previous research had shown that learning is important for the olderforagers, ...r's way and slowed their efficiency. Robinson had shown previously that some bees are genetically inclinedto be undertakers. "We're beginning to get a clea...Low Oxygen, Key To Fetal Development, Also Offers Cancer Clues
...ividing and instead invade the uterus. "We've shown that hypoxia is necessary for the earlydevelopment...lls to hypoxiais reversed. Ludlow's laboratory has shown that when facing low-oxygen conditions, ovarian cancer cells stop proliferating butstill invade heal...Mutant Gene Not Sole Explanation For Hiv Non-Progression
... Recent research has shown that most infecting strains of HIV use ...everal epidemiological studies have shown that individuals with one mutant copy of the CCR5 gene are disproporti...Environmental Engineers Demonstrate Effective Method For Trapping Highway Pollutants
...niversity of CincinnatiCollege of Engineering have shown that a modified filtrationsystem along interstate highways can prevent heavy metals frompolluting nearby water supplies. The system, known as a partial exfiltration trench (PET) , was designed and built by research assistant professor John Sansalone...Competitive Inhibition May Enhance Safety Of Minimally Processed Fruits And Vegetables
...Studies with endive leaves and salad products have shown that lactic acidbacteria can prevent the growth of pathogens like Listeria monocytogenes,Salmonella typhimurium, and S. aureus. Therefore, products for salad bars andfresh-cut, pre-packaged salads sold at retail may be good applications for thesecult...