Tag: "reveal" at biology news

Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent

...sis of MDPH data has demonstrated its potential to reveal undisclosed hazards to human health. They suggest that MDPH amend its unique reporting requirements to include more information about cigarette and smokeless tobacco product design features that affect nicotine delivery - as well as testing of a samp...

Brain networks strengthened by closing ion channels

...eficit hyperactivity disorder (ADHD). "Our data reveal how the brain's arousal systems influence the cognitive networks that subserve working memory-which plays a key role in abstract thinking, planning, and organizing, as well as suppressing attention to distracting stimuli," said http://info.med.yale....

DNA analysis reveals rapid population shift among Pleistocene cave bears

...illustrate the ability of DNA sequence analysis to reveal aspects of animal population dynamics in the distant past and potentially illuminate the influence of human migrations in animal population changes. The new work, reported by a collaborative group of researchers including Michael Hofreiter of the Max...

Do you hear what i see?

...yser notes that the findings also could be used to reveal the role of audio-visual integration in communication or to help pin down where sounds are coming from. "Clearly, our acoustical understanding often improves if we can see the lips of the speaker—for example at a crowded cocktail party," he says. "Ho...

Gene hunters close in on Lou Gehrig’s disease

...nd sporadic ALS but also to tailor tools that will reveal therapies for it.? Traynor cautioned that the 34 SNPs are not guaranteed trail markers for ALS genes. “If you roll dice 555,352 times, you are bound to get lucky by chance alone on some of those throws,?he says. “The next step is to go back and fi...

Moonlighting enzyme linked to neurodegenerative disease

... of frataxin that is produced. "These findings reveal a previously unrecognized mechanism by which certain DLD mutations can simultaneously induce the loss of a primary metabolic activity and the gain of a moonlighting proteolytic (breaking down enzymes) activity. The latter could contribute to the meta...

Linheng Li Lab documents the development of cancer stem cells

...s were very excited to be part of these efforts to reveal basic features of cancer stem cells," said Dr. He. "What we learned -- that cancer stem cells are a rare population in the tumor mass; that they are slow cycling but more active than normal stem cells; and that cancer stem cells and stromal insertion...

Brown team finds crucial protein role in deadly prion spread

... are exciting, researchers say, because they might reveal a way to control the spread of prions through drug intervention. If a drug could be made that inhibits this fragmentation process, it could substantially slow the spread of prions, which cause mad cow disease and scrapie in animals and, in rare cases...

Nanoparticles can track cells deep within living organisms

... MRI scan, the presence of the labeled cells would reveal that the tumor was adding new blood vessels and therefore aggressively growing. Adult stem cells are also under investigation in therapies that enhance new blood vessel growth to improve the blood supply to diabetic patients' limbs or to repair b...

Protein found that slows hepatitis C growth in liver cells

...s and make more copies of itself. “Our findings reveal a novel cellular control pathway that regulates the growth of hepatitis C virus within the cell,?said Dr. Stanley M. Lemon, director of the National Institutes of Health-funded Hepatitis C Research Center at UTMB and of the academic medical center’s ...

Minuscule molecules pack a powerful punch

...This success illustrates the power of the mouse to reveal function and indicates a wider role for microRNAs in animals with large genomes. ...

New test helps identify hepatitis C patients at high risk of developing cirrhosis

... liver up until the time of the biopsy, but can't reveal how much future damage will occur. The new test assessed by Cheung and his colleagues is a way to hedge the bets. The lead author of the paper is Hongjin Huang, PhD, associate director of liver diseases at Celera in Alameda, Calif. Huang and ...

Scientists reveal structure of gateways to gene control

Scientists at Penn State University will reveal in the 29 March 2007 issue of the journal Nature .... The study's many surprising findings together reveal an intimate relationship between the architecture of nucleosome structures and the underlying DNA se...

Protein averts cell suicide but might contribute to cancer

...at mistakes Dpo4 makes," he says. The findings reveal why the enzyme makes mistakes. DNA resembles a spiral staircase that is made from separate halves, with half-steps protruding from each. The half-steps fit together down the center to form the complete staircase. In DNA, the half-steps are kn...

Salmonella survives better in stomach due to altered DNA

...tious Salmonella (in this case the DT104 type) can reveal how this pathogen has become stronger and caused more outbreaks. This information can also be used to make a less dangerous variant of this infectious Salmonella. Such a harmless variant can be used as a vaccine. Salmonella serovar Typhimurium DT...

How does your brain tell time?

...e or a flash of light, the response would not only reveal the nature of the event, but the other events that preceded it and when they occurred. The UCLA team tested the model by asking research volunteers in the study to judge the interval between two auditory tones under a variety of different conditio...

Cloned mice created from fully differentiated cells, a milestone in cloning research

...of cancer stem cells. Such studies may potentially reveal a new set of molecular targets that could aid in the treatment of cancer," says Dr. Cheng. ...

Plant studies reveal how, where seeds store iron

...ntent of this important nutrient." The findings reveal how essential it is to look beyond ferritin to understand how iron is stored by plants. The researchers say the stored iron in the vacuole is a key source of iron for developing seedlings. Seedlings that do not express the VIT1 protein grow poorly wh...

Signal protein shows promise for blocking tumor promoters in skin cells

... counteracted the effects of Fyn. The findings reveal that levels of Fyn and Srcasm work in a kind of see-saw ?when Srcasm production is low, dangerous amounts of Fyn can build up in cells. But when Srcasm production is increased, Fyn levels go down. "The binding of Srcasm to Fyn regulates Fyn's persist...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...Cell, published by Cell Press, new structures that reveal another critical piece of the puzzle: how the so-called polymerase II enzyme discriminates among potential RNA building blocks to ensure the characteristic accuracy of the process. The researchers found that a portion of the enzyme known as the tri...

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