Tag: "compounds" at biology news
Physicists reveal water's secrets in journal Science
... floats on water, whereas the solid state of other compounds
would sink in their liquids." Among its many properties, water also can absorb large amounts of heat before it begins to get hot, and it releases heat slowly during cooling. Otherwise, pools of water, from puddles to oceans, might boil during the d...
Cancer cells forming blood vessels send their copper to the edge
...bit the growth of blood vessels and some of these compounds
are even in clinical trials for use in cancer therapy. Yet, the biological basis for this sensitivity of angiogenesis to copper has been an enigma. In search of an answer, researchers from the Biosciences and X-ray Science divisions at Argonne and ...
Unique tomatoes tops in disease-fighting antioxidants
...is a carotenoid that contains a variety of related compounds
called isomers. Isomers share the same chemical formula, yet differ in chemical structure. In the case of tomatoes, the different lycopene isomers play a part in determining the color of the fruit. Several years ago, Schwartz and his colleagues dis...
Nectar is not a simple soft drink
...oth pollinators) and ants ('nectar thieves'). Some compounds
were attractive and others were not. Certain nectar blends seem to increase a flower's chances of being visited by useful pollinators while discouraging nectar thieves. Nicotine, the most abundant repellent found, affected both pollinators and nec...
ACS News Service Weekly PressPac -- Feb. 21, 2007
...associate editor Lisa Jarvis explains that the new compounds
may circumvent the long-standing problem of drug resistance, in which anti-cancer drugs gradually loose their effectiveness. The drugs focus on a new target in the war against cancer a substance called heat shock protein 90 (Hsp90). Heat shock prote...
Scientists identify specific enzymes that make meningitis hard to fight
... stress. Oxidative stress damagesthe base chemical compounds
of the bacteria's DNA. This should lead tocell death and the defeat of the bacteria. However, the virulentmeningitis bacteria are able to repair this harmful damage and aretherefore unaffected by the body's defences. The research team found that th...
David H. Baker to be honored for work in animal and nutritional science
...h interest involves the nutritional role of sulfur compounds
and the sulfur amino acids methionine and cysteine. "Methionine is a critical amino acid in poultry diets, but I am interested in it also because of its role in human nutrition," Baker said. Baker discovered that the methionine analog, S-methyl...
BC biologists identify alternative brain cancer treatment
...ormal brain cells with ketones, a class of organic compounds
they can metabolize effectively but the tumor cells cannot. In their experiment, the BC team surgically implanted two different kinds of tumors into the brains of male mice. The mice were then divided into three groups. One group was fed a high-car...
Cancer is a stem cell issue
...c that used in combination with chemotherapy, such compounds
will also prevent cancer reigniting after treatment. We have to be very careful because [these compounds] will also regulate normal stem cell behaviour. It is a fine balance, he noted. EuroSTELLS is the European Collaborative Research (EUROCORES)...
ACS News Service Weekly PressPac -- February 14, 2007
...amine how the heat of cooking affects the chemical compounds
associated with garlic's beneficial health effects...ore cooking may further enhance formation of those compounds
before heat inactivates alliinase. ARTICLE #3 FOR IMMEDIATE RELEASE "Effect of Cooking on Garlic (...
Flavanols in cocoa may offer benefits to the brain
A special cocoa made to retain naturally occurring compounds
called flavanols may have the potential to help maintain healthy brain function and chart the course for future research that could lead to new solutions for preventing cognitive decline and dementia, according to a panel of scientists who presented ...
UGA researcher receives grant to study risks of jet fuel exposure
...also use rats to determine the levels at which the compounds
in jet fuel become harmful. Fisher said jet fuel exposure is probably the most common chemical exposure to military personnel and civilians working on military bases. Recent studies in rodents have shown that exposure to vapors from jet fuel may ...
Studies of population genetics, evolution are an exercise in bad taste
...gs that taste bitter are used as medicine, such as compounds
in certain tree barks that help protect against malaria. He and his colleagues Drs. Dennis Drayna and Un-kyung Kim at the National Institutes of Health, along with Drs. Lynn Jorde and Michael Barnshad at the University of Utah analyzed the gene ...
HIV protein enlisted to help kill cancer cells
...otein called TAT can transport biologically active compounds
into cells. TAT is small, but it can move massive ... He says he believes that clinical trials of these compounds
could be just a few years away. Hawkins began researching TAT-Bim after discussions with co-author R...
New study may show how to forestall a fatal, virus-caused immune-system meltdown
...drug companies to go out and develop new antiviral compounds
for viruses that may or may not ever make it out of places like West Africa. This could be of critical importance to the people who live there, and for us if one of these diseases makes it across to here, either naturally like West Nile or as a res...
ACS News Service weekly PressPac -- Feb. 7, 2007
... under simulated conditions the healthful phenolic compounds
in extra virgin olive oil remain stable in the acidic environment of the stomach for hours. In laboratory cultures, those substances had a strong antibacterial effect against eight strains of H. pylori, including antibiotic-resistant strains. "These...
Grape expectations for healthier wine
...pes could help prevent allergies and boost healthy compounds
at the same time, reports Jennifer Rohn in Chemist...why antioxidant levels increase, but because these compounds
are up-regulated in response to environmental stress in plant cells, it could be that the ozone is p...
EO Lawrence Award goes to 8 scientists and engineers
...nd synthesizes a unique class of organic polyazido compounds
containing no carbon-carbon bonds that transcend the carbon-carbon paradigm. These organic compounds
are the ideal feedstocks for carbon-based and carbon-nitride-based ultrapure nanomaterials. Marc K...
Scripps research scientists: Compounds show significant promise against potential bioweapon toxins
...rrently available treatments, the newly identified compounds
have the potential to fill the existing therapy ga...roach, Janda and his colleagues identified the two compounds
and tested their efficacy in both cell-based assays and in mice exposed to the toxin. One compound...
Engineering Cell Biology II
...ays are needed for target validation and screening compounds
and other aspects of drug discovery and development. Other applications include development of human disease models, production of biological therapeutics and cell-based therapies. Attendees will be from both the Biological Engineering (Biological ...
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