Tag: "chemicals" at biology news
Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses
...ty Medical Center showthat harmless doses of three chemicals
used to protect Gulf War soldiersfrom insect-borne...likely received. But when used in combination, the chemicals
caused neurologicaldeficits in the test animals similar to those reported by some Gulf Warveterans, ...
Tumor Suppressor Gene Located In Liver Cancer Cells
... of the M6P/IGF2r function is important in the way chemicals
cause liver tumors in rats, the scientists explained, then pharmaceutical companies could take into account the decreased likelihood of this genetic loss occurring in humans when determining whether to pursue the testing of a promising new drug. Jir...
Enticed By A Chemical Tease, Female Beetles Are Rewarded With A Nuptial Gift To Protect The Next Generation
...d it pays off for him. Insects' use of exogenous chemicals
is almost certainly more widespread than we realize." One mystery remains. The chemical ecologists admit that they're uncertain how Neopyrochroa beetles obtain cantharidin, although they suspect that the source is blister beetles. Newly emerged ad...
Researchers Find Possible New Route to Making Cancer Cells Vulnerable
...in the cell surface.It selectively pumps out toxic chemicals
that find their way inside thecell. Normally, the MDR pump protects the cell against poisons, but resistantcancer cells have many times the normal amount of MDR protein to protectthem from chemotherapy drugs. These cells work overtime, expelling chem...
PET Project Helps Reduce Pollution Threat From Heavy Metals
... spring and to see howroad salt and other de-icing chemicals
affect it. The research is funded by the Ohio Department ofTransportation....
Medicinal Leech May Offer Clues To Neural Regeneration
...produce a specific response or set off a series of chemicals
reactions. Studies show that the NOS enzyme plays a role in a number of functions, such as learning and feeding, and is activated in response to neuronal injury in several organisms, including mammals. Though it has been tied to a number of functions...
Plants Have Future As Environmental Clean-Up Agents
...s a problem occurring across the country.Hazardous chemicals
left behind in landfills and dump sites threatenwa...ts can feed on some types ofchemicals, while other chemicals
are brought closer to the surface,which can hasten their degradation because oxygen is present. "In...
Methane Deep In Ocean Crust Could Feed Chemical-Hungry Microorganisms
... depths thrive where there is no light and dine on chemicals
toxic to other life. Deborah Kelley, a University of Washington oceanographer, presents a poster at this week's American Geological Society meeting in San Francisco saying that a significant reservoir of methane and hydrocarbons may be found in rock...
Learning From Birds And Bees: Engineers Study Insects For Ideas On Tiny "Micro Air Vehicles"
...ince they may search environments containing toxic chemicals
orbiological hazards, the MicroFlyers must also be inexpensive enough tobe thrown away. Designers are aiming at a $1,000 per-unit cost for theexpendable vehicles. The effort to design MicroFlyers involves many different technicalchallenges, so Blank...
Vietnamese Chemist Finds New Use For Old Cashew Shells
...elying onrenewable resources rather than oil-based chemicals
is a majoradvantage. And, no one will have to worry about what to do withall those leftover cashew shells anymore....
Ten Years of Progress For Superfund Basic Research Program
...illness. What it can do ischew up another group of chemicals
which can cause cancer and arenot easily degraded in nature. They're called PAHs or poly-aromatic hydrocarbons. "They're a big concern," said Kinkle. "They're often potentcarcinogens. They bind to the DNA which can affect generegulation." Both bacter...
Chemists Compute Answers To The Origin Of Gout
...into the basic molecular make up and reactivity of chemicals
- and for dangerous or sensitive species, modelling is completely safe.Other projects currently under way at the new group are: A study of how nitrogen gas binds to natural enzymes and is converted to fertiliser so effortlessly when, for the same p...
Project Shows Native Bacteria Can Destroy Widespread Pollutant In Groundwater
... microorganisms may respond by digesting the toxic chemicals
as well. Then, when the operation is shut down, th...er side of the ledger, however, is the cost of the chemicals
involved. In the case of TCE decontamination, the highest cost item in the process is hydrogen perox...
Munching Microbes Make A Meal Out Of Toxic Substances
...soil contains microbes with the ability to degrade chemicals
such as petroleum compounds," says Loring Nies, as...ding how and why microbes eat other types of toxic chemicals
in the soil, and how they might be used in bioremediation efforts. Nies and his students have taken ...
Early Tests Indicate Motor Skills Unharmed In Consumers Of Tainted Fish
...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 (planning and attention). "We thought that we might see reduced motor f...
Bacterium gobbles up chlorinated pollutants
...etrachloroethene, trichlorothene and other related chemicals
would not be the number-two ground water pollutant (after petroleum hydrocarbons). However, Strain 195 and other microorganisms may already be hard at work at some pollution sites, a possibility that the Cornell team can investigate, now that they k...
Stopping "Cellular Suicide" Could Boost Production In Biotech Labs
...lses, Betenbaugh says. Heis alsoexperimenting with chemicals
that mimic the effects of bcl-2 whenadded tocells that are already growing in the lab. "Maybe our cells seethe signalsthat tell them to commit suicide," Betenbaugh says. "But we canhalt thatprocess before it hits the point of no return. Instead of dy...
Second Look Acquits Gene Of Role In Breast Cancer
...cell encodes genetic instructions into a string of chemicals
calledribonucleic acid orRNA, which later is used as a blueprint for building a protein," he explains."But the string ofRNA coding for the protein is normally interrupted at several points by codingthat is not part ofthe protein. Before the cell can...
Study Focuses On How Plants Help Toxic Pollutants Travel Around The World
... she added, it appears thatconcentrations of these chemicals
-- probable endocrine disrupters that cancause rep...ich then will betested to determine the amounts of chemicals
that already exist in theenvironment. "We'll close up the system and measure what's in there...
No Link Seen Between Breast Cancer And Pesticides, PCB Exposure For General Population
...ot measure levels of organochlorines. "These chemicals
are stored in fatty tissue, including breast tissu...y accumulate in the body over time. Some of these chemicals
have been shown to increase estrogen activity in animals and consequently have been linked to breast...
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