surfaces 2 3

Tag: "surfaces" at biology news

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...enerate signals to repel harmful bacteria from the surfaces of surgical tools like catheters. Finally, the method also offers a simple method to genetically modify cells. "This is not the end of the story, but the beginning," says Brinker. "No one else has created these symbiotic materials and observed th...

Viral genetic differences are possible key to HIV dementia

...velope gene, which interacts with receptors on the surfaces of host cells. "That's the gene that's most likely to vary between tissues, because it evolves rapidly and allows the virus to dock with different cell types," Pillai says. According to Pillai, an analysis of the sequence data suggests that HIV is...

Studies suggest new brain protein may help in treating schizophrenia, insomnia and anxiety

...showing how binding of NPS to its receptors on the surfaces of neurons promotes strong arousal, suppresses all phases of sleep and lessens anxiety in stressful or unfamiliar situations. Now, at ICN 2006, Dr. Reinscheid's group reports how NPS also can reduce the biochemical and behavioral symptoms of schizo...

Creating a window on 'oceans in motion'

...the data is revealed when an animal is recaptured, surfaces (sending the archived data to a satellite) or passes one of many acoustic receivers arrayed on the ocean floor along the coastal shelf, akin to the process of scanning UPC codes at a store check-out. "Every fish, every pelagic animal is a submarin...

Researchers win money to develop breath test to detect breast cancer

...ns. The IDEA proposal states that the switchable surfaces have molecularly designed sites that will attract ...ted to the oil and water pockets. The switchable surfaces can be engineered to stand up or lie down---imagine blades of tall grass before a strong wind blows ...

Berkeley researchers lay groundwork for cell version of DNA chip

...o firmly fasten biological cells to non-biological surfaces has been developed by researchers with the Lawrenc... To date, researchers have been attaching cells to surfaces using the array of cell adhesion proteins that Nature has provided, especially the proteins known as...

A bathroom that cleans itself

... coatings they hope will be used for self-cleaning surfaces in hospitals and the home. Led by Professor Ros...cles of titanium dioxide currently used on outdoor surfaces such as self-cleaning windows. The particles work by absorbing ultraviolet light below a certain ...

Molecular mechanism may explain how fevers spark seizures

... on epilepsy and GABA-A receptors, proteins on the surfaces of nerve cells that normally quiet the brain's excited chatter. GABA-A receptors were long suspected to play a role in epilepsy because they are the major inhibitory receptors in the brain and might therefore dampen the hyperexcitability that chara...

USC, Rice to develop bacteria-powered fuel cells

...nella oneidensis attach to and interact with anode surfaces inside the fuel cell. Anodes are the parts of fuel...nderstand how bacteria transfer electrons to anode surfaces under a variety of conditions. "There are three primary components in the system: the bacteria, the...

Findings advance use of adult stem cells for replacement bone

...on non-treated titanium scaffolds. The pre-treated surfaces encouraged calcification at a much faster rate. The researchers also found up to 75 times more calcium in the bone created by tissues in the pre-treated cultures. "To me, the most important element of the research is that it may one day contribute t...

Flu not the only germ threat this time of year

... common cold, spreads mainly as large droplets via surfaces ?doorknobs, faucets, dishtowels, and hand-to-hand contact, for instance. "Unlike the flu, RSV is more often spread directly by secretions," said William Hall, M.D., a geriatrician and pulmonary specialist at the University of Rochester Medical Cente...

Study in Science holds promise for a new approach to drug therapy

...cells convert one kind of signal received on their surfaces into another set of signals inside them. Proteins called receptors are built into the outer cell surfaces and designed to react with a single, specific signaling molecule (a ligand). When a signaling molecu...

'Nano-keys' bind cell receptors and trigger allergic reactions

..., "We want to understand how the receptors on cell surfaces mediate cellular responses, how cells work on a mo...sses within the cell. The so-called nano-keys are surfaces of silicon with a layer of polymer or a thin lipid (fatty molecules that make up cell membranes) bil...

Anthrax inhibitor counteracts toxin, may lead to new therapeutics

...t it displays multiple copies of identical binding surfaces on the same structure. The inhibitor designed by the Rensselaer-Toronto team is also polyvalent and recognizes these surface patterns on the anthrax toxin molecular structure, allowing it to bind at multiple sites and become four orders of magnitude ...

Of mice, men, trees and the global carbon cycle

...n dioxide that's emitted, with the oceans and land surfaces each playing a major role. However, researchers have estimated that plant respiration releases five to 10 times as much carbon dioxide as fossil fuel burning. It's crucial, therefore, to know the amount of plant emissions more accurately because tha...

Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

...r to confirm that DNA had attached to the nanotube surfaces and was subsequently hybridized, or matched to its complementary DNA. "We have found that electrical measurement of carbon nanotube devices produce sensor results that are comparable to state-of-the-art optical techniques," Star said. He added, "Th...

Infant transplant patients resist infections that kill adult AIDS patients

...e have cells (lymphocytes) with receptors on their surfaces enabling them to recognize many different microorganisms. The diversity of lymphocytes is enormous. Each person has an estimated 1 billion different T cells capable of fighting various infections and another 1 billion of a different kind of immune sy...

Antibacterial coatings cut infection rates

...iscovered that these chemicals also keep synthetic surfaces clean when placed on those surfaces in a marine environment. This provided the impetus for studying their use in biomedical device appli...

Bees solve complex colour puzzles

...allenges of vision - namely, recognizing different surfaces under different colours of illumination - by sugge...led light across a woodland floor. "When all the surfaces in a scene are under the same light, identifying a particular surface when the global illumination c...

New U. of Colorado at Boulder flu chip may help combat future epidemics, pandemics

... a worldwide pandemic. "If an unusual flu subtype surfaces that has characteristics of both avian and human flu types, we could detect it rapidly using this technology," Kuchta said. Standard laboratory culturing techniques by the CDC and WHO currently take four days to five days to determine flu strains af...

1 2 3 4 5 6