Tag: "effects" at biology news

Brain Protein "Rescues" Neurons From Atrophy

...ctor for which neurons are competing, and that the effects of deprivation are likely to be mediated by such a factor," Katz said. The key to the scientists' discovery was a new technique of providing neurotrophins to brain cells that, for the first time, allows researchers to determine precisely which cells ...

Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses

...not crossthe blood-brain barrier, it magnifies the effects of the other two chemicalsby tying up the available BuChE." Abou-Donia said an additional genetic risk factor arises in some individualswho have a faulty form of BuChE, resulting in low enzymatic activity andthus a diminished ability to inactivate d...

Gene-Altered Mouse May Provide New Insights To Parkinson's Disease, Substance Abuse And Schizophrenia

...s, theyhave limited effectiveness and produce side effects in many patients. "Years of research by many investigators have helped determine thecellular components that regulate dopamine levels in the synapse,"said Giros, now a researcher at INSERM in Paris. "We are now in theposition to ask questions about ...

Heat-loving Microbe Repairs Its DNA With Light

... S. acidocaldarius cells with UVradiation, whose effects on DNA are precisely known. As expected,the vast m...rtion of the sun's spectrum to reverse the harmful effects ofthe UV that sunlight also contains. On the other hand, Grogansays it seems ironic that the first e...

Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey

...a, a volcanic island in the Aegean Sea, had global effects that likely influenced climate patterns as far awa...and archaeology of the Near East have had profound effects on how we understand cultural interactions," Newton said, "such as the rise and fall of the Minoan, ...

Honeybees In The Wild Nearly Gone In North America

...ave recovered fairly quickly.But with the combined effects of the tracheal mites and varroamites, it became t...the beekeeper." Backyard gardeners will notice the effects of the honeybee blightin smaller yields and smaller, lower quality fruits and vegetables,Tew said. T...

Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs

...angered species. His team now is investigating the effects of low genetic variation among pocket gophers on disease resistance, physiological fitness, and their survival in the wild. Team members will present early results at the August meeting....

Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation

...ndredth the power of the ATOC sound source to test effects of sound on nearby whales in relatively shallow ...its to operate the ATOC sources is that if adverse effects are noted among marine mammals, the experiment will be modified or halted. "ATOC is an important...

Ocean Sediments Contain Record of Past Vegetation Fires in Africa

...ermine whether human-induced burning has different effects than natural burning, and how burning is related to changes in ecology, and perhaps evolution, on longer time scales. "Another implication of Verardo's work," adds Sancetta, "is that if a lot of the carbon [charcoal] in ocean sediments is terrestria...

Component In Soy Products May Be Substitute For Estrogen Treatment

...k estrogen-like compounds that are thought to have effects onbone and cholesterol metabolism. They also are believed to play a role inlow breast-cancer rates among women in Southeast Asia where soy proteinis regularly consumed. "Although this is a relatively short-term study for evaluating changesin bone pa...

Cholesterol Anchor Helps Signaling Proteins Direct Development

...itute investigator. "I'd be very interested in the effects of cholesterol levels and the presence of substances that affect cholesterol formation." He cautions that many of the patterning events directed by these proteins take place before most women know they're pregnant. Hedgehog and other similar protei...

Changing Continental Runoff Patterns Could Change Ocean Circulation

...er-based General Circulation Model to look at the effects of continental runoff on ocean circulation patterns in the early Eocene about 55 million years ago when the Earth was substantially warmer than it is now. The geography of the Eocene was different. The Tibetan plateau had not formed, India was...

An Equal Opportunity Extinction? Cincinnati Geologists Find Global Impact from Permian Die

...ar regions appeared to be spared the most dramatic effects ofmass extinctions. However, when Ebersole and Miller examined data on articulatebrachiopods, which were diverse groups at the time, they found notrend at all. "Early on, I expected to see that the tropics wouldbe smashed," explained Ebersole. "But ...

Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms

...h's crust is pulling apart, possibly with profound effects on the ice streams' behavior, and hence on the ice sheet's overall stability. An aerogeophysical survey headed by Donald Blankenship of the University of Texas at Austin and Robin Bell of Lamont-Doherty Earth Observatory is tracing how the sub-ice r...

Scientists Identify Retrovirus-Like Components In Corn Genome

...ments have managed to side-step some very negative effects on their host," Bennetzen says. "For example, if these elements were inserted into genes in such a way as to cause mutations, you could wind up with more than 30,000 mutations per individual plant, and a dead host." Instead, the retrotransposons inse...

Animal Studies Indicate Aging Brain Responsive To Estrogen

...te the need formuch more study of the neurological effects of estrogen on both femalesand males. "There's be...etheir findings demonstrate the need to take brain effects and the timingof doses into account when considering hormone replacement therapy....

No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming

... for optimism about this problem. In studying the effects of experimentally added nitrogen on prairie grassl... The two researchers spent 12 years studying the effects of experimentally added nitrogen in 162 plots in three Minnesota grasslands. "We added nitrogen at ...

Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival

...data to answer the ultimatequestion: the long-term effects on booby adults forced to raise two chicks. But preliminary data clearly show a cost. "They show up at the colony in about the same frequency the second year, but are much less likely to breed," said Anderson, who visits the Galapagos each fall to s...

Environmental Impact Statements Need To Be Made Easier To Decipher

...fications had consistentlypositive and substantial effects on understanding."...

Urbanized Watersheds More Sensitive To Climate Change

...hydrologists and climate modelers decipher future effects of increased precipitation and temperatures, accor...people per square mile. "There were some small effects on stream flow in rural areas, but nowhere near what we see in urban areas," says De Walle. "In ge...

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Breaking Medicine News(10 mins):Health News:4-year-old InstaKNOT CEO Honors Local Firefighters with Community Support 2Health News:4-year-old InstaKNOT CEO Honors Local Firefighters with Community Support 3Health News:4-year-old InstaKNOT CEO Honors Local Firefighters with Community Support 4Health News:Allred Insurance Satellite Office Grand Opening 2Health News:Hodgkinson Street Mepham Rebrands 2Health News:Paramount Rx Discount Card Program Provides Valuable Resources in Midst of Current Health Care Reform 2Health News:Paramount Rx Discount Card Program Provides Valuable Resources in Midst of Current Health Care Reform 3Health News:Hormone Therapy May Up Heart-Related Deaths in Some Prostate Cancer Patients 2Health News:Hormone Therapy May Up Heart-Related Deaths in Some Prostate Cancer Patients 3
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