Tag: "chemicals" at biology news
Major study predicts grim future for Europe's seas
...ors are concerned about poorly monitored lifestyle chemicals
associated with household products. Changing economies and a more mobile labour force are likely to affect fisheries, though success or failure are currently clearly tied to the total allowable catch set through the Common Fisheries Policy. The study...
Pesticides choke pathway for nature to produce nitrogen for crops
...ants, a team of scientists reports that artificial chemicals
in pesticides through application or exposure to ...tic bacteria. This is the mechanism by which these chemicals
reduce symbiosis and nitrogen fixation." Fox began the project as a doctoral student with John A. ...
Better chemistry through living models
...years to emulate natures use of enzymes to convert chemicals
to energy, PNNL announced Wednesday (June 6). The information that scientists at the DOE national lab turn up may point to new materials that render it economically feasible to produce energy from hydrogen fuel cells. This is a basic research pro...
Finding protection from tumor growth in unexpected places
... cytotoxic T cells and levels of immune-activating chemicals
and decreased levels of immune-suppressing chemicals. Finally, the ACE 10/10 macrophages alone could direct the immune response and convey protection as direct injection of these cells into melanoma tumors of normal mice yielded decreased tumor size....
'Dutch Nobel Prize' for 4 top Dutch researchers
...to insect feeding plants produce specific volatile chemicals
that attract enemies of their enemies. Prof. L.P. (Leo) Kouwenhoven, physicist at Delft University of Technology. Kouwenhovens groundbreaking work on so-called spin qubits is vitally important for the use of quantum information, for example in a f...
How sneaky HIV escapes cells
...ys. In one experiment, Gould and his team added chemicals
to normal human cells that force nearby proteins together into a clump, and this was enough to get them sent out of the cell in exosomes. If they added a tether to force naturally-clumping proteins inside the cell to the membrane, the proteins met a ...
Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring
... are sensitive to damage from radiation, mutagenic chemicals
and intense industrial air particulate pollution. While the researchers did not specifically study the protein-coding regions of DNA where genes reside, Yauk notes that previous studies correlate mutations in non-coding regions with those in coding r...
An 'elegant' idea proves its worth 25 years later
...s of sodium phenylacetate and sodium benzoate, two chemicals
the body already makes to carry nitrogen for dispo...he says. "His elegant idea was to give patients chemicals
they already make in small amounts in large doses to make up for the missing urea cycle enzyme they ...
Story ideas from the Journal of Lipid Research
...abetes patients Researchers have shown that key chemicals
that carry cholesterol and fats in the blood accumulate in people with type 2 diabetes, which may help improve treatment of this disease. Type 2 diabetes is a condition in which blood sugar is higher than it should be and too much insulin is produc...
Natural compound and exercise boost memory in mice
... The compound, epicatechin, is one of a group of chemicals
known as flavonols and has been shown previously to improve cardiovascular function in people and increase blood flow in the brain. Flavonols are found in some chocolate. Henriette van Praag, PhD, of the Salk Institute, and colleagues there and at Ma...
Story ideas from the Journal of Biological Chemistry
...Jeff Kuret and colleagues have developed drug-like chemicals
that cross cell membranes and drive efficient tau aggregation over a period of days. They noticed that when tau proteins within cells were treated with this chemical, they separated from other proteins called microtubules to which they naturally at...
Canadian paper innovation holds promise for improved global health safety
...-use paper-based products with biologically active chemicals
that can protect the public against increasing inc...ioactive ink which would allow biologically active chemicals
to be printed, coated or impregnated onto or into paper using current paper-making and high-speed pr...
Einstein researchers' discover 'radiation-eating' fungi
...d that fungi exist mainly to decompose matter into chemicals
that other organisms can then use. But researchers at the Albert Einstein College of Medicine of Yeshiva University have found evidence that fungi possess a previously undiscovered talent with profound implications: the ability to use radioactivity a...
ACS News Service Weekly PressPac -- May 16, 2007
...li , which enables certain microbes to move toward chemicals
in their environment. Researchers have envisioned reprogramming such organisms so that microbes capable of synthesizing an anti-cancer drug, for instance, can be used to medicate diseased cells while sparing healthy cells of side effects. The resea...
In a first, scientists develop tiny implantable biocomputers
...l. The biocomputers' "input" is RNA, proteins, and chemicals
found in the cytoplasm; "output" molecules indicating the presence of the telltale signals are easily discernable with basic laboratory equipment. "Currently we have no tools for reading cellular signals," Benenson says. "These biocomputers can tra...
Hives ferment a yeasty brew, attract beetle pest
...ted by honeybees. The beetles associate the alarm chemicals
with a good food source and head for the hive. In Africa, where the small hive beetle is a minor honeybee pest, bees quickly isolate an invading beetle, but domesticated European honeybees are not as diligent in cleaning their hives. The beetles are ...
Iowa State scientists demonstrate first use of nanotechnology to enter plant cells
...e a gene into a plant cell. In a separate process, chemicals
are used to activate the genes function. The process is imprecise and the chemicals
could be toxic to the plant. "With the mesoporous nanoparticles, we can deliver two biogenic spec...
Slowing the racing heart
...on in the action of adrenaline and adrenaline-like chemicals
on the pacemaker cell, playing an important role in slowing down the heart rate. "The enzyme works through calcium and potassium channels that we know to be key players in the generation and regulation of the pacemaker activity," said Ke. "Althou...
Plants tag insect herbivores with an alarm
..., plants frequently generate toxins, emit volatile chemicals
to attract the pest's natural enemies, or launch other defensive tactics. Now, for the first time, researchers reporting in the June 2007 issue of Plant Physiology have identified a specific class of small peptide elicitors, or plant defense signa...
$4.4 million NIH grant renews Echinacea and St John's wort research at Iowa State
...mproving these supplements rather than identifying chemicals
for use as drugs. We are moving toward something like a fingerprint of the biologically active chemicals
in the species." In addition, the researchers have identified some specific compounds in Hypericu...
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