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Tag: "involves" at biology news

Where we change our mind

...gate their way to a specified goal. Functional MRI involves using harmless magnetic fields and radio waves to image blood flow in brain regions, which reflects activity. Importantly, Yoshida and Ishii used sophisticated statistical probabilistic analysis of the subjects' movements to overcome a major obstacl...

Results with newer bladeless LASIK equivalent to standard microkeratome LASIK

...a. LASIK (Laser-assisted in situ keratomileusis) involves treating nearsightedness, farsightedness or astigm...nea to alter the way the eye refracts light. LASIK involves creating a flap, removing a defined amount of corneal tissue by an excimer laser, and replacing the ...

Light-sensitive photoswitches could restore sight to those with macular degeneration

... the country, including one last year at UCSF that involves UC Berkeley collaborators, is designed to "take cu...rs of the Physical Bioscience Division of LBNL. It involves altering an ion channel commonly found in nerve cells so that the channel turns the cell on when zap...

Electric fish in Africa could be example of evolution in action

...hich many scientists have found harder to imagine, involves animals that live in the same geographic location but, for some reason, begin to mate selectively and form distinct groups and, ultimately, separate species. This so-called sympatric speciation is more controversial because there have been few accept...

Stomach receptor for H. pylori discovered

...treatment for H. pylori infections which typically involves taking 3 to 4 medications over a 10 to 14 day period. ...

Researchers find protein that silences genes

...also found that the mechanism behind the silencing involves both modifications of histones and changes in DNA methylation, and that HDA6 affects both. Circular pathway to silence "Somehow these modifications are linked together," Pikaard said. "We know that they work together and that HDA6 is a key playe...

NAU researchers chirping over discovery of new cricket genus

...life under the Martian surface. His second project involves developing procedures for rapidly inventorying cave biodiversity. He has applied these methods to caves throughout northern Arizona and Belize. He will be applying these techniques to caves in Chile this summer and Belize next year. Voyles is also ...

'Smart' genetic therapy helps the body to heal itself

...linked adrenoleukodystrophy (X-ALD). This disease involves a single gene on the X chromosome (the ALD gene) and is the most common inherited single-gene disease involving damage to the myelin sheath, which insulates nerve cells in the brain. Using a mouse model of the disease, Dr Pujol and colleagues foun...

Wasps queue for top job

...rvival and fecundity because helping is costly. It involves energy-expensive flight to forage for food, and leaving the nest is dangerous. We have found that the brighter the individual wasp's future, the less likely it is to take risks by leaving the safety of its nest to forage for food." The defining fea...

Mice learn tasks that may help treat human psychiatric disorders

...us-Liebig University in Giessen, Germany. The test involves the ability to switch attention from one task to another, a skill often impaired in people with autism and similar illnesses. "Without a measure of cognitive deficit in mice that is relevant to such disorders in humans, research into new diagnostic...

UNH researcher restoring oyster reefs to Great Bay

...em (www.oysters.unh.edu). Oyster reef restoration involves providing sufficient hard substrate ?typically oyster shells on which young oysters settle and grow ?and seeding it with disease-resistant young oysters. Natural oyster reefs are formed by live oysters atop mounds of empty shells; one initiative of G...

Quick -- what’s that smell?

...hought that perception of any one odorant probably involves simultaneous stimulation of several different receptors and that an olfactory code enables identification of specific odorants by the brain. Previous experience and motivational state also interact with odorant information to influence processing and...

Tigers get a business plan

...n initial $10 million to support it. The program involves a dozen WCS field sites where an estimated 800 tigers currently reside. Building on WCS successes in places like India's Nagarahole National Park and the Russian Far East where tiger numbers have rebounded, the new plan says that tigers can grow to ...

Researchers attack tumor cells by exploiting dependency on sugar metabolism

...rocess that can occur in the absence of oxygen and involves conversion of glucose to lactate. Scientists believe that the glycolytic phenotype enables rapidly proliferating tumor cells to survive even when environmental oxygen levels are not optimal. In addition, perturbations of the normal physiology of mito...

Non-coding RNAs help silence the mammalian transcription

...etermines which disorder arises: When the deletion involves the chromosome 15 that came from the father, the c...d has Prader-Willi syndrome, but when the deletion involves the chromosome 15 that came from the mother, the child has Angelman syndrome. In the mouse, a clust...

UCI scientists find chlorine may contribute to ozone formation

... quickly," Saltzman said. "Most likely the process involves airborne marine particles, but research is needed to understand how it occurs." Inland ozone levels typically are higher than on the coast, mainly because of meteorological conditions that restrict air circulation and trap pollutants. Ozone is a hig...

Dissecting the machinery of nicotine's reward

...this highly addictive drug. And that understanding involves tracing the neural machinery by which nicotine switches on the brain's reward machinery. In an article in the June 15, 2006, Neuron, Jean-Pierre Changeux of CNRS, Collège de France, and Institut Pasteur and Philippe Faure of Institut Pasteur and CNR...

Pathway toward gene silencing described in plants

...about DNA methylation, an epigenetic function that involves a chemical modification of cytosine, one of the fo... "This pathway takes place in the nucleus, and it involves short RNAs, called small interfering RNAs -- siRNAs." Those little tykes, just 24 nucleotides long...

UC Davis researchers reveal apples' protective ways

...nuclear factor (NF) kappa B pathway." This pathway involves chemical signaling between cells. The apple extract was able to protect the cells from the normal lethal effects of TNF. "Our study showed that the flavonoids in apples and apple juice can inhibit signals in this pathway that would otherwise damage...

Schepens scientists are first to discover angiogenesis switch inside blood vessel cells

...biting a mechanism outside the vessel cells, which involves the action of growth factors such as VEGF or vascular endothelial growth factor. While effective in preventing vessel growth, these drugs have little impact on existing, stable vessels," he says. "Our discovery may help design drugs that could disman...

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