American Chemical Society's Weekly PressPac -- Aug. 8, 2007
...cal research. Those materials might, for instance, become a new generation of imaging agents that pinpoint the location of diseased tissue in the body. However, the question of whether these nanomaterials are toxic to living cells or organisms has not been fully answered, the researchers explain. The scie...Multinational research: protecting ecology means understanding people, too
...rch Traineeship which helps U.S. doctoral students become leaders in their fields. The program seeks ways to cross traditional barriers, such as when scientists in different disciplines need to know what researchers in companion fields are studying, according to the science foundation. In bridging gaps bet...Climate change isolates Rocky Mountain butterflies
... the population sizes decrease and the populations become more isolated," Roland said. "The gene pool of t...at as populations function with less synchrony and become more independent of each otheras we've shown the Parnassius is becoming in certain areas in the Cana...New study warns limited carbon market puts 20 percent of tropical forest at risk
...th low rates of deforestation (HFLD) nations could become the most vulnerable targets for deforestation if the Kyoto Protocol and upcoming negotiations on carbon trading fail to include intact standing forest. The study by scientists from Conservation International (CI), the South African National Biodive...Pollution causes 40 percent of deaths worldwide, study finds
... basic needs, like pure water and ample food. They become more susceptible to diseases driven by malnourishment, and air, water and soil pollutants," Pimentel concludes. He and his co-authors call for comprehensive and fair population policies and more conservation of environmental resources that support hu...Interaction of just 2 genes governs coloration patterns in mice
...aches. In the process, the beach mice's coats have become markedly lighter than that of their mainland brethren. "In nature there is a tremendous amount of variation in color patterns among organisms, ranging from leopard spots to zebra stripes, that help individuals survive," says Steiner, a postdoctoral...Protein 'chatter' linked to cancer activation
...thor on the study. As we age, our chromosome ends become shorter. Individuals whose ends deteriorate faster are at a higher risk of developing cancer because short chromosome ends are a serious threat to the stability of our genome. When the genome becomes unstable, it puts our bodies at greater risk of ca...Newly created cancer stem cells could aid breast cancer research
... however, that some normal cells are more prone to become tumor-initiating cells and have a higher metastatic potential when they become cancer cells than other normal cells. The culture medium Ince created favors the growth of the human...Risk of common vaginal infection linked to preterm birth appears higher for blacks
...ever, in some cases treatment fails and infections become resistant. Even women whose infection clears frequently can become re-infected later. We found that paternal race is an independent risk factor for BV during pregnan...High blood pressure, low energy -- a recipe for heart failure
...ved in maintaining the heart's energy supply could become a key to new approaches to prevent or treat heart failure. The molecular factor, a protein called estrogen-related receptor alpha (ERR alpha), helps the heart keep up with energy-draining conditions like high blood pressure, which makes the heart wo...Abnormal fat metabolism underlies heart problems in diabetic patients
...echanisms, numerous aspects of cellular physiology become altered. "The pieces of the puzzle of diabetic heart disease are now rapidly falling into place," Gross says. "By exploiting the novel technology of shotgun lipidomics, we have identified the increased activation of certain lipid-digesting enzymes an...New textbook illuminates the close links between evolutionary and molecular biology
... biology, human genetics, and biochemistry, it has become yet more evident that evolutionary principles guide biological phenomena at all levels, and are essential to a practical understanding of these phenomena. The authors, who are world-renowned experts from diverse biological backgrounds, illustrate h...Rain forest protection works in Peru
...see that CLAS-like satellite analysis systems will become the standards routinely used by local conservation agencies to track rain forest disturbances and deforestation in the future. ...OHSU turns mouse into factory for human liver cells
...ed in the journal Nature Biotechnology, could soon become the gold standard not only for examining drug meta... Plus, the cells are only available when specimens become available, which can be any hour of the day or night, and they must be used immediately. "There ar...Gilbert Foundation and American Fed for Aging Research award grants on Alzheimer's disease
...g 16 million Americans if no preventive treatments become available. To address the need for more research into the prevention, diagnosis and treatment of Alzheimers, six early-career scientists were awarded the first Rosalinde and Arthur Gilbert Foundation/AFAR New Investigator Awards in Alzheimers Diseas...... Argentinas commercial shrimp industry. Many birds become entangled in fishing nets, and oil pollution from tankers transporting petroleum from southern Patagonia to Buenos Aires and from expanding offshore oil drilling operations is a looming possibility. Legislation to formally create the protected area...Antioxidant overload may underlie a heritable human disease
...ts or compounds that easily give up an electron to become oxidized, while oxidizing agents readily accept electrons. In the body, such oxidation-reduction (redox) reactions are integral to the release and storage of energy. Many cellular pathways are also sensitive to the prevailing redox condition. Oxida...A study by the MUHC and McGill University opens a new door to understanding cancer
...b-b. As a result, the effects of the growth factor become much more pronounced, which results in an unrestrained proliferation of cells that can become a cancer. In the long term, this may serve as a basis for us to find ways to intervene in this cha...JCI table of contents: Aug. 9, 2007
...ls how much we eat In simple terms, individuals become obese if they eat more calories than they burn. However, the molecular pathways that control feeding behavior and cellular energy expenditure are highly complex and not completely understood. In a study that appears online on August 9 in advance of...... of liver diseases in which the normal liver cells become damaged and are replaced by scar tissue. This reduces the amount of healthy liver tissue, and the accumulation of scar tissue disrupts the development and functioning of this complex organ. Cirrhosis of the liver has various causes, including: excess...