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Tag: "too" at biology news

Agent slows aging in mice

.... Miller says prior studies typically have been too small and their results hard to confirm in subsequent studies. “The National Institute on Aging decided to fund grants at three institutions to do studies of this sort in the right way,” he says. In six to 10 months, once all the mice in the cont...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...munosuppressive effects in human men, perhaps they too could benefit from increased carotenoid intake, say, by eating more corn,” he said. “This study certainly opens the door for future work on nutritional/antioxidant therapy for the hormonally immunocompromised,” McGraw added. “The interface betw...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...orescent molecules into tumors that are ordinarily too small to be detected, said Demir Akin, a research assistant professor of biomedical engineering who specializes in nanomedicine. "These bacteria can potentially deliver specific molecules into a variety of cells," said Akin, the first author of a ...

Exploring the dark matter of the genome

...ure of genomes affects cellular processes. We hear too much about the 'post-genomic era' -- it's underappreciated that we don't understand the genome yet." Celniker agrees. "What we would like to see is a complete sequence of the fruit fly from telomere to telomere" -- that is, from one end of the ch...

In nature, proteins sweep up nanoparticles

...then amass metal nanoparticles into piles that are too large to be swept away by underground currents. Precisely how and why the bacteria undertake this bit of housecleaning remains a mystery, but it suggests that proteins could play a key role in bioremediation strategies designed to trap harmful metals...

Marine phytoplankton changes form to protect itself from different predators

...ng, the best strategy is to form colonies that are too large for those predators to consume. Lead author Jeremy D. Long, along with collaborators Gabriella W. Smalley, Todd Barsby, Jon T. Anderson and Mark Hay found that’s just what Phaeocystis does. Chemicals that signaled attacks from copepods supp...

Runners -- Let thirst be your guide

Many people are drinking too much water, including sports drinks, when exercisi...remic. That’s simply not true,” he says. “Drinking too much of anything puts some people at risk for potentially dangerous levels of hyponatremia.” The ...

CU study reveals why starling females cheat

... outside their group if they sense their mates are too genetically similar to themselves. Mating with strangers increases their brood's genetic diversity, even though it does not reap additional help. As yet, it is unknown how females detect the genetic similarities between themselves and their mates, th...

The mouflons of the Kerguelen archipelago

...able to genetic mutation, and the Islands are much too isolated to have undergone migrations. “This variety can be explained by elimination, over the generations, of individuals with low genetic diversity. In small isolated populations, related individuals are likely to reproduce amongst themselves, resu...

Male circumcision overstated as prevention tool against AIDS

...y. Too many innocent people are dying and there is too much disregard for human life among infected prostitutes to leave treatment decisions solely up to them. A program of testing and treatment for prostitutes must be mandatory and those that refuse treatment must be held liable. Many international ...

Scientists close in on missing carbon sink

...cally in the atmosphere. The models tended to move too much carbon dioxide toward ground level in the summer, when growing trees and other plants take in the gas, and not enough carbon dioxide up in the winter. As a result, scientists believed that there was relatively less carbon in the air above mid-la...

St. Jude study shows genes play an unexpected role in their own activation

... model scientists use to explain how CREB works is too simple, said Paul Brindle, Ph.D., associate member of the Department of Biochemistry at St. Jude. Brindle is senior author of a report on this work that appears in the June 20 issue of “The EMBO Journal.” “CREB is like a plumber who turns on the w...

How brain pacemakers erase diseased messages

...action also revealed that stimulation delivered at too slow a pace fails to keep bad information at bay. Indeed, slower pulses can actually add to problematic bursts, they showed. The model's findings closely parallel the clinical responses of patients, who typically experience the greatest relief fro...

An 'elegant' idea proves its worth 25 years later

... "This is a happy story," says Brusilow. "It isn’t too often in genetic medicine that we can intuitively develop a treatment with already available chemicals and save lives."...

'Personality-gene' makes songbirds curious

...nce of such "personality genes" - there are simply too many factors that influence human behaviour and these factors are hard to control experimentally. Birds are an easier target for research and indeed, they also have different personalities. An international team of researchers have now found eviden...

Amphibians in losing race with environmental change

...s in the past, but the current change has occurred too rapidly. In the past, water was reasonably pu...s when a novel threat arises, other threats may be too intense and too new for amphibians to cope with them," the researchers wrote in their report. "Behav...

An ancient bathtub ring of mammoth fossils

...ge-opening called Wallula Gap. But Wallula Gap was too narrow to handle all the massive flow; the water would back up, creating temporary Lake Lewis, then slowly drain through to the Columbia River Gorge—all in a matter of days. Preliminary results place most mammoth finds in the Lake Lewis area at el...

Students invent protective pouch to enhance cell therapy

...nd disperse helpful proteins. But the openings are too small to allow the microcapsules to escape. In lab tests using latex tubing to represent a vein, the students used ultrasound imaging to confirm that fluid can flow smoothly through the mesh and can spread the microcapsules throughout pouch. They...

Molecule that destroys bone also protects it, new research shows

..., this new finding indicates that inhibiting IL-17 too much could put people taking such a drug at risk for opportunistic infections such as periodontal disease and tuberculosis, she noted. "Developing knowledge about the molecules that contribute to host defense versus pathology is very important fo...

Percutaneous aortic valve replacement safe, successful in high-risk patients

...t of narrowed, calcified aortic valves in patients too sick to withstand open-chest surgery. According to a study reported at the 30th Annual Scientific Sessions of the Society for Cardiovascular Angiography and Interventions (SCAI), May 9?2, 2007, in Orlando, FL, patients who were treated with the CoreV...

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