X-ray images help explain limits to insect body size
... tubes. As insects get bigger, this type of oxygen transport becomes far less effective. But if the atmospheric oxygen levels increase, as they did in the late Paleozoic, then longer tracheal tubes can work. This would allow larger-sized insectseven giantsto evolve. Recent research published in the journal P...Research team enlightens the reasons for severe blindness
...th other proteins which play a role in the protein transport in the cells. Thus the scientists concluded that lebercilin is relevant for the protein transport within the optical cell: as shown by electro-microscopic pictures, within the optical cell described...Genetic analysis finds greater threat in frog-killing fungus
... also hitchhike on the feathers of birds for quick transport across mountain ranges." Moreover, if resistant spores remain in lakes where previous populations of frogs have succumbed to chytridiomycosis, attempts to repopulate the lakes with healthy frogs will likely fail. Study co-authors Roland Knapp, ec...Synchrotron could help save the Tassie devil
...s of biosecurity concerns because we would need to transport biological samples between different countries. Dr Church is one of hundreds of scientists scheduled to use the Australian Synchrotron, which was officially opened in Melbourne yesterday....JCI table of contents -- July 26, 2007
..., but their roles in mediating reverse cholesterol transport from macrophages remains unclear. In a study appea...ennsylvania studied macrophage reverse cholesterol transport in mice and found that ABCA1 and ABCG1, but not SR-BI, promote reverse cholesterol transport in macr......ayer. These bonds ultimately influenced electronic transport through the molecules. This achievement was recently described in the Journal of the American Chemical Society (JACS). The researchers foresee that this method may enable scientists and electronics engineers to substantially broaden the use of thes...Discoverer of Sly Syndrome finds way of delivering medicine to fight rare genetic disorder
...mount of epinephrine probably works by stimulating transport by vesicles blister-like wrappers that carry subs...cargo can get there too. Weve found that trying to transport the cargo changes the Volkswagen and the Volkswagen can no longer get across. ...Scientists discover new way to study nanostructures
...rational characteristics, atomic arrangements, and transport mechanisms in metallic,organic and biomolecular nanostructures. One of our aims is the development of devices and sensing methodologies that utilize the insights gained from our research, said Landman....Renewable energy wrecks environment
... be covered with structures to extract, store, and transport the energy. One hundred windy square meters, a good size for a Manhattan apartment, could power an electric lamp or two, but not the laundry equipment, microwave oven, plasma TV, and computer. New York City would require every square meter of Conne...UB scientist discovers novel iron-copper alliance
... test the overall hypothesis that increased copper transport during iron-deficiency is critical to enhance cert...ciency causes anemia, and abnormal intestinal iron transport is associated with several common human pathologies, including anemia of chronic disease (ACD) and h...New role for protein in fat cells may improve understanding of obesity and diabetes
...lipoproteins combinations of fat and protein that transport fats in the blood, Morton says. In this study, we show that CETP also shuttles fats inside fat cells between two separate areas and that fat cells with reduced levels of CETP are unable to process fats normally. The new study, to be published in th...JCI table of contents: July 19, 2007
...ecifically in muscle tissue and found that glucose transport and the activity of the glucose transporter GLUT4 ...le-specific knockout of PCK-lambda impairs glucose transport and induces metabolic and diabetic sydnromes AUTHOR CONTACT: Robert V. Farese University of Sout...American Chemical Society's Weekly PressPac -- July 11, 2007
...rease our knowledge of the global distribution and transport of POPs, their ecological impact, and the ecology and behaviors of seabirds. ARTICLE #4 FOR IMMEDIATE RELEASE Evaluation of Noninvasive Approach for Monitoring PCB Pollution of Seabirds Using Preen Gland Oil DOWNLOAD PDF http://pubs.acs.org/cgi-bi...Scientists take next step in understanding potential target for ovarian cancer treatment
...its job in the TGF- signaling system disrupted the transport of the signaling component to the nucleus. Ultimately, this resulted in degradation of the signaling component and reduced gene expression in the nucleus. The study findings were published recently in The Journal of Biological Chemistry http://ww...A stepwise retreat: How immune cells catch pathogens
...eins, proteins that move along actin filaments and transport cargo. Transporting the filopodias internal scaffold myosins help bringing about the retraction. Likely several copies of myosin proteins act in a synchronous fashion to bring about the tentacle motion. The insights we gained into the properties o...Aphids make 'chemical weapons' to fight off killer ladybirds
...led glucosinolates which are found in the nutrient transport vessels of the plant. Once eaten, these chemicals are then stored in the aphids blood. Mimicking the plants themselves, the aphids also produce an enzyme called myrosinase, which is stored in the muscles of their head and thorax. In the event of a pr...News tips from the Journal of Neuroscience
...cell body compartment, consistent with anterograde transport and secretion from the surface of the axons. Viralmediated gene transfer of myc-tagged BDNF into DRGs was later detected in Schwann cells, consistent with transfer of BDNF from DRG to Schwann cell. Overexpression of BDNF in DRGs also led to anterogra...Biocontrol of invasive water hyacinth contributes to socioeconomic and health improvements in Africa
...atches and biodiversity. It interfered with water transport and blocked hydroelectric power turbines, resulting in a severe drop in the supply of electricity. Human health was also threatened because the large weed mats created breeding habitat for the vectors of malaria and schistosomiasis. Rotting vegetat...Chronic fatigue -- clues in the blood
...otransmitters, he concedes. Some of them relate to transport of zinc and other metal ions within the cell, which may suggest a fundamental disturbance in cellular function. The researchers now hope to take narrow the focus of research onto the expression of these 35 genes in the blood of a much larger group ...... the function of molecules such as hemoglobin that transport oxygen throughout the body. The concentration of iron is tightly regulated by hepcidin, a peptide hormone secreted by the liver. High hepcidin levels result in anemia while decreased hepcidin levels cause iron overload diseases. In this issue of the ...