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Tag: "know" at biology news

Scratch no more: Gene for itch sensation discovered

...ere are additional itch receptors," Chen says. "We know of some proteins that are similar to GRPR, so now we're trying to determine if there is functional redundancy in the itching pathway." GRPR knockout mice had normal reactions to painful stimuli, indicating that pain and itch are mediated by separate...

Art and music for the birds

...mockingbirds listen to noise we make, but we don’t know if they might respond to human sound,” says Demaray. While there have been no scientific studies on birds’ response to human music, anecdotal evidence suggests that certain species of bird listen to and replicate human song. “My interest with the p...

Nicotine rush hinges on sugar in neurons

When nicotine binds to a neuron, how does the cell know to send the signal that announces a smoker’s high" As with other questions involving good sensations, the answer appears to be sugar. A University of Southern California study appearing with a commentary in Nature Neuroscience online proposes a ro...

Cellular message movement captured on video

...ure we’re covering much as yet. We certainly don’t know all the interactions among these molecules that bring the cell into action.” Examining living cells through a microscope, Chien and the paper’s co-author, associate project scientist Ying-Li Hu, filmed red-fluorescence-tagged paxillin molecules tr...

Agent slows aging in mice

...entists can’t explain why at this point. “We don’t know how NDGA is having its effect on survival in this first analysis,” Miller says. “It may be that the female mice because of their hormonal status have other pathways to death and disability, or need higher or lower levels of NDGA to see an effect....

Simulations unravel outer membrane transport mechanism

...o the beta-barrel and labels the inside: You don’t know whether what you have labeled is happening inside or outside.” U. of I. researchers simulated the interaction of part of the inner membrane protein TonB (shown in red) and the luminal domain (in green and dark blue) of the outer membrane transporte...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...l as PfCRT. Now, based in part on this study, they know that PfMDR1 is dependent on mutated PfCRT, and pro...n, they can't prevent heme from crystallizing. "We know these mutant proteins are controlling pH across two different membranes, but we don't yet know exact...

New bacterium discovered -- related to cause of trench fever

... says. Also, caregivers, and medical staff need to know about the different species, so, for example, AIDS...s and exposure to body lice. Medical staff should know to look for Bartonella infections if someone with a persistent, unexplained high fever has a cat, ha...

Brightening prospects of using fluorescent nanotubes in medical applications

...r of physics who headed the research. “Now that we know how to separate out the brightest ones, I hope that researchers will begin considering ways to use them in clinical applications.” The figure of merit for fluorescence is quantum efficiency: the ratio of the number of photons of light that a device...

Stroke study sheds light on left-right brain divide

...xeter and lead researcher on this study, said: ‘We know that suffering a stroke in the left frontal region can affect aspects of speech and language, but this research highlights, for the first time, the additional challenges that people with right frontal-lobe damage might face in everyday life.’ 23 p...

'Lucky 13' as new gene discovery offers further hope for childhood blindness

...ear to cause defects in the retina. "We already know of a dozen genes which, when mutated, cause LCA," ...ness, its becoming very important for everybody to know exactly which mutation they've got, because the treatments being tested are specific for different k...

Researchers shed light on shrinking of chromosomes

... separated and distributed during cell division we know very well; two daughter cells with either broken c...diseases including cancer can arise. But so far we know only little about condensation, a process crucial to the successful separation of chromosomes. Using...

Migration alert -- How tumor cells home in on the lymphatic system

...developing anti-metastasis therapies. Scientists know that tumor cells spread via the lymphatic system, but they don’t understand the details of how this deadly migration takes place. In the June 2007 issue of the journal Cancer Cell, EPFL Professor Melody Swartz and postdoctoral researcher Jacqueline S...

Researchers examine carbon capture and storage to combat global warming

.... ''That experience gives us confidence that we know how to drill the wells, push the [carbon dioxide] in and say something about what will happen when it gets down there,'' said Orr. Currently, three industrial-scale projects are pumping millions of tons of carbon dioxide into the ground every year...

Massive herds of animals found to still exist in Southern Sudan

...and Tourism. “Thanks to the aerial surveys, we now know that wildlife resources, including elephants, are still intact in many areas, but also urgently need strong measures to conserve and manage them through joint efforts at all levels.” The Southern Sudan region was last surveyed in1982 by the Wildlif...

Researchers reveal structure of protein altered in autism

...o drug therapies may emerge. “We really don’t know what causes autism, but this research represents a solid starting point,” said Sarah Dunsmore, Ph.D., program director with the National Institute of General Medical Sciences, part of the National Institutes of Health, which partly supported the stud...

Study shows lizard moms dress their children for success

Mothers know best when it comes to dressing their children, at ...effects are a nebulous thing to study, because you know there are genes for these traits, and it's really hard to tell the maternal effects apart from the e...

Women well informed about breast cancer, yet lacking knowledge about current treatments

... majority (76 percent) of women surveyed said they know at least a fair amount about breast cancer, many r.... However, 86 percent were not certain they would know what questions to ask. “Communication between the patients and their physicians is so important...

MU researchers to study the status of black bears in Missouri

... better research questions down the road. We don’t know if we have a self-sustaining population in Missouri or if we simply have a lot of dispersing males coming from Arkansas. We need to investigate the genetic interchange between the two populations to understand where we are in the growth state of the ...

Small, self-controlled planes combine plant pathology and engineering

...of organisms in the atmosphere.” He explained, “We know that microbes mediate important biochemical proces... drama unfolds in the atmosphere, which we already know is teeming with microbial life.” Although Schmale is not currently conducting his research for th...

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