Tag: "notes" at biology news

Study offers new insights into angiogenesis inhibitors

...ations." "This is a very important piece of work," notes Judah Folkman, M.D., of Children's Hospital Boston and Harvard Medical School, in whose laboratory endostatin was first discovered with Michael O'Reilly in 1997. "This paper shows an emerging set of proteins in the body which guard against abnormal a...

UW researchers find second anthrax toxin receptor

... is much more complicated than previously thought, notes Young, an expert on receptor molecules. Scientists do know that to prevent anthrax disease, antibiotics must be administered immediately to kill anthrax bacteria that typically enter the body as spores via the skin, lungs or gastrointestinal tract. O...

The structure behind the switch

...n classes are created is a nearly perfect system," notes Michael Lieber, M.D., Ph.D., professor of pathology and biochemistry and the study's principal investigator. "And yet, the DNA mechanism for how a cell switches from producing one class to producing another has remained a mystery for almost 20 years....

The new role of S&T leaders

...to move forward or to stay the course." Jackson notes that the AAAS has a unique opportunity to play a significant role in education and in science and technology public policy. The challenge, she says, will be to unite with research universities and corporate laboratories. "Scientists and engineers a...

Fruit consumption related to increased risk of Parkinson's?

...ides or herbicides, rather than the fruit itself," notes study author Andrew Grandinetti, PhD, of the Pacific Biomedical Research Center, University of Hawaii and Manoa. "High fruit intake is still an important protective factor against many chronic diseases. However, these findings suggest that further re...

Physics tip sheet #33 March 28, 2003

...you listen to a noise that contains all pitches of notes except for one, then switch it off, you hear the missing tone linger, even though it was never played. This auditory illusion cannot be explained by the apparatus of the ear itself, and must arise in the brain. This paper shows how some simple models...

Fruit fly cells reveal Hedgehog's secrets

...aracteristic of disruptions in Hedgehog signaling, notes Beachy, who plans to screen the rest of the fruit fly genome and examine closely the roles of the four newly identified genes....

Carnegie Mellon University chemists create versatile polymer brushes

...r for modifying the tactile response of surfaces," notes Matyjaszewski. Other brush structures can be grown from nano-particles of glass or gold, giving rise to corona-shaped structures that combine organic and inorganic materials at the nano-scale through extremely strong chemical covalent bonds (see Fig...

Carnegie Mellon scientists create unique DNA probe with great potential

...d we hope to exploit this novel recognition mode," notes Armitage. ...

Scientists find new way to grow human embryonic stem cells

...hat keeps them from doing so at the drop of a hat, notes Cheng. "Mouse embryonic stem cells have been studied for more than 20 years," he says. "We know what signals keep them from differentiating, we know the whole pathway. But human embryonic stem cells have only been studied for the last five year...

Rockefeller, Weill Cornell researchers find link between estrogen, brain structure changes

...he subcellular level through electron microscopy," notes Milner, professor of neuroscience in the Division of Neurobiology at Weill Cornell. "We were able to visualize precise changes in protein distribution at the actual dendritic spines of the neurons." Findings from several previous studies have been m...

New, more effective option for gene data mining identified

...usters obtain by the different methods. Acharya notes "Even simple visual inspection showed that the KL method created clusters that were better separated compared to the most popular method. The evaluation with quantitative measures confirmed the visual observations." The KL method uses the KL diver...

Early miscues cause late problems in model of Marfan syndrome

...e as an early change that leads to later problems, notes Dietz. Authors on the report are Dietz, Neptune, Pamela Frischmeyer, Dan Arking and Loretha Myers of the Johns Hopkins School of Medicine; Tracie Bunton of Dupont Pharmaceuticals Company; Barbara Gayraud and Francesco Ramirez of the Hospital for Spe...

Scientists re-evaluating the meaning of 'desertification,' Duke ecologist says

... with Australian ecologist D. Mark Stafford Smith, notes that dry lands cover about 40 percent of Earth's s...u can't look at any one thing by itself." His book notes that a temporary loss of vegetation cover due to short term drought is "distinct from, and not neces...

UCSD biologists discover key to blocking inflammation

...we've essentially prevented inflammation in mice," notes Johnson. To demonstrate that this was the case, ...in treating inflammation and arthritis." Johnson notes that the discovery may have its greatest value as an insight into the basic biology of cells, which ...

BIDMC researchers identify source of preeclampsia

...work to develop strategies to treat preeclampsia," notes Karumanchi. "We're obviously a number of years away from being able to put these to use in humans but these results are an important step in the process." Furthermore, adds study coauthor Vikas Sukhatme, M.D., Ph.D., this study has important implicat...

Tapeworm's chemical trick could make drugs more effective

.... "Inside cells, cyclic GMP is a signal molecule," notes Oaks, a professor of comparative bioscience. "It tells cells how to behave. When the tapeworm secretes this signal molecule, the intestine closes off and nothing moves. That suggested to us that the intestine is not digesting material as it normally ...

Rainforests at risk: Where theres smoke, theres even more fire

... emissions skyrocket. Data is scarce, but Cochrane notes that three rainforest fires in Mexico, Brazil and Indonesia may have equaled 41 percent of world fossil fuel emissions in 1998. The problem, Cochrane said, is that fire is so common in rainforests. People routinely use fire to clear existing forests,...

Drug tested for HIV prevention in Baltimore

...tected significant side effects or new infection," notes Jackson. "The important thing is that the treatmen...ew infection within four to six weeks of exposure, notes Jackson. At treatment-level doses of 200 milligrams twice a day, the risk of liver damage is serious...

Backstage with a command performer

...ical instrument -- that is, which genes play their notes in an ongoing melody -- depends on understanding the biochemical range of DNA and histone proteins, which chromatin researchers attempt to do. Allis and his colleagues know that understanding this range will tell us how it affects the functioning of ...

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