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Tag: "accelerated" at biology news

Loss of stem cells correlates with premature aging in animal study

...s that reside in each tissue type,” says Brown. We accelerated the aging process by wiping out a large fraction of these cells prematurely, in one fell swoop. Essentially, these mice start their young adulthood with two strikes against them in terms of long-term tissue maintenance, and so, they subsequently age ...

Extra-aggressive form of idiopathic pulmonary fibrosis identified

...ration of symptoms before diagnosis and display an accelerated clinical course to end-stage disease. The authors postulate that these "rapid progressor" patients, predominantly smoking males, represent a distinct clinical phenotype compared with the usual "slow progressors" patients. "These findings high...

Arctic ice retreating more quickly than computer models project

...reasingly rapid loss of ice in recent years, which accelerated to 9.1 percent per decade from 1979 to 2006 according to satellite observations. ...

World's leading scientists announce creation of 'Encyclopedia of Life'

...a, have been underway since January 2006, work has accelerated due to the support provided by the John D. and Catherine T. MacArthur Foundation and the recent discussion of the Encyclopedia of Life by renowned biologist Edward O. Wilson at the March 2007 Technology, Entertainment, Design (TED) Conference. One...

Biodiesel study targets cleaner air, cleaner engines

...d that the success of this project will lead to an accelerated adoption of biodiesel use in on-farm applications, not only in Ontario but across Canada. This will bring both environmental and economic benefits to Canadians, since biodiesel can be produced from local, renewable resources. Biodiesel is a renewabl...

NIAID DNA vaccine for H5N1 avian influenza enters human trial

... research into potential products," he adds. "Our accelerated effort to understand and find new solutions to pandemic influenza is part of the NIAID commitment to respond to new emerging infectious disease threats and to improve public health preparedness." Highly pathogenic avian influenza A viruses, specif...

World's largest flower evolved from family of much tinier blooms

...ooms, which now weigh up to 15 lbs., evolved at an accelerated pace. However, after increasing in size by a factor of roughly 79, the plant then reverted to a more sedate evolutionary pace. This evolutionary spurt is one of the most dramatic size changes ever reported among eukaryotes; if humans were to underg...

Living with water scarcity -- world must act now

...ucts are becoming increasingly popular ?meaning an accelerated demand for more water to grow more food. Growing cities take more water, and environmental concerns are rising. A water-food-environment dilemma. Water use in agriculture is recognized as one of the major drivers of ecosystem degradation, caus...

Satellites shed light on global warming

...ity's Professor Helmut Rott has been observing the accelerated retreat and break-up of the Larsen Ice Shelf on th...s, where the buttressing ice had disappeared, have accelerated significantly. The retreat of grounded ice and the accelerated ice export due to increased velocity ...

Anti-dandruff compound may help fight epilepsy

...els, the researchers could identify molecules that accelerated the recovery. One chemical that proved quite effective in improving channel recovery was zinc pyrithione (ZnPy), the active ingredient in many dandruff shampoos. Li explains that ZnPy has a shape that allows it to fit into the gate region of the ...

Neuron cell stickiness may hold key to evolution of the human brain

...vestigated whether CNSs also bear the signature of accelerated evolution. Explained Prabhakar, who devised the...nd Noonan ran an analysis to determine whether the accelerated CNSs disproportionately occurred near genes with particular functions, they discovered that neuronal...

Smashing the time it takes to repair our bones

...es that would otherwise heal successfully could be accelerated with the use of these stimulants. Dr Hannay said normal fractures in young, healthy people took approximately six to eight weeks to heal. "It might be possible to significantly reduce the healing time. That would be the goal." Dr Hannay gra...

Weighty viruses

...ed to the gas phase, given an electric charge, and accelerated in an electric field. However, this process must leave the viruses intact. The researchers thus chose to use a very gentle method known as LIAD (laser-induced acoustic desorption). The virus particles are released from the sample by laser-induced sou...

Global changes alter the timing of plant growth, scientists say

...ring In recent decades, scientists have observed accelerated springtime developmental activity in many plant an... In the experiment, researchers found that warming accelerated springtime flowering of all species. But they were surprised to find differing responses to elevated...

Nanoparticle assembly enters the fast lane

The speed of nanoparticle assembly can be accelerated with the assistance of the molecule that carries life's genetic instructions, DNA, a team of researchers at the U.S. Department of Energy's Brookhaven National Laboratory recently found. Nanoparticles, particles with dimensions on the order of billio...

Comparing chimp, human DNA

... five million years ago. They found 202 "highly accelerated regions" or HARs, which showed a high rate of evol...e likely to encode proteins. The most dramatically accelerated region, HAR1, appears to make a piece of RNA that may have a function in brain development. DNA, ...

Antioxidant protects against lung damage in silicosis

...whereas zinc protoporphyrin, an inhibitor of HO-1, accelerated the development of silicosis lesions. ...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...t is likely to last two years. Those risks include accelerated bone loss, motion sickness, the inability to treat minor illnesses, an inadequate quantity of food and the possibility of "interpersonal tensions" between crew members. Risk 29 addresses the fact that Mars astronauts will be bombarded by high-energ...

Temperament linked to onset of cancer and early death in female rats

...often. The aging affects on reproduction were also accelerated in the fearful rats. In an earlier study, University of Chicago researchers looked at the lifespan of male rats and found that the adventuresome males lived longer. Because the male rats died of a variety of diseases, they could not establish a re...

Buildup of damaged DNA in cells drives aging

...ed primarily by skin and other cancers rather than accelerated aging," said Dr. Hoeijmakers. "This patient, there...e." To understand why this XPF mutation caused accelerated aging, the investigators compared the expression pattern of all of the genes (approximately 30,000) ...

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