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Tag: "another" at biology news

Scientists analyze chromosomes 2 and 4

...n, the tract is flanked by an unusual abundance of another type of DNA duplication, called a segmental duplic...uencing Center and senior author of the study. In another intriguing finding, the researchers identified a messenger RNA (mRNA) transcript from a gene on chro...

At the molecular level, the predator is the prey

... something of an illusion. At the molecular level, another battle rages. And in this second, miniature realm, it's the newt who's the aggressor. Biologists at Indiana University Bloomington, Utah State University and the University of Utah present evidence in this week's Nature that a toxin produced by the ...

An (ecological) origin of species for tropical reef fish

...from neighboring habitats may differ more from one another than from fish thousands of miles away. An ecological speciation model for coral reef organisms may spur the development of a more synthetic treatment of speciation on land and sea. Coral reefs, like tropical forests, express an extreme of life's ca...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...wn to produce the antibiotic, but in a mutation of another gene that co-regulates the timing of expression for the antibiotic-producing genes. The result? The mutant produces erythromycin for five days. The nonmutant produces it for only one. If the specific mutation can be located, Kao reasons, perhaps it c...

Natural Killers Could Lead to New Hepatitis Treatments

...he sinusoids, even against blood flow, passing one another and even changing direction, said Littman. “It is very different from the kind of classical mechanism of lymphocytes rolling through vessels with the blood flow and when they are activated coming to a stop and then crossing through vessel walls in re...

A probe, not an echo

... display in color-coded fashion one tissue in red, another in green, and so forth -- thus assisting visualization in 3D. The technology could also be used to isolate one type of tissue , allowing, for example, all the blood vessel structures to be displayed alone and studied. "Preliminary results on a shee...

Scientists use manufacturing methods to reconstruct mastodon

... used a variety of techniques—borrowing bones from another specimen of the same species, size and stage of de... fact, appears to have been killed in a fight with another male mastodon and then butchered by humans. Fisher and a team of assistants also discovered a set o...

Some Brain Cells Change Channels

...ace channels that let charged calcium ions in with another kind of channel that keeps calcium out. If muscle-...uch, the cell and its neighbor are so close to one another at these connection points, called synapses, that molecules released from one cell travel immediatel...

Newly discovered protein an important tool for sleeping sickness research

...odies for VSG, but trypanosomes randomly switch to another antigen when the organisms divide and reproduce. Trypanosomes whose VSG has switched evade the antibodies the human immune system made to fight the original antigen, thus assuring the long-term survival of these parasites within their hosts. The tryp...

U. Iowa researchers improve Huntington's disease symptoms in mice

...d Lucille A. Carver College of Medicine have taken another step toward a potential treatment for Huntington's disease (HD). Using an approach called RNA interference (RNAi), the scientists reduced levels of the disease-causing HD protein in mice and significantly improved the movement and neurological abnorm...

Breakthrough System for Understanding Ocean Plant Life Announced

...odies for VSG, but trypanosomes randomly switch to another antigen when the organisms divide and reproduce. Trypanosomes whose VSG has switched evade the antibodies the human immune system made to fight the original antigen, thus assuring the long-term survival of these parasites within their hosts. The tryp...

Function of new cancer genes discovered

... Fanconi anaemia The researcher also investigated another form of inherited cancer, Fanconi anaemia. People with this disease develop many highly malignant tumours at a young age, because the cell repair system is incapble of detaching two linked DNA strands. FANCD2 is a protein responsible for the repair ...

Second messenger NAADP shows fast, dose-related impact on satiety cycle

...P could provide a key in the area of obesity." In another therapeutic arena, she notes, Viagra is the world'...well as mood and body temperature. "More recently, another hormone, cholecystokinin, has been considered to be a potential drug target," Yamasaki noted. Cholec...

Life detection instrument passes key test on road to Mars

...lity - a prevalence of one type of handedness over another - would be absolute proof of life," said Mathies, professor of chemistry at UC Berkeley and Skelley's research advisor. "We've shown on Earth, in the most Mars-like environment available, that this instrument is a thousand times better at detecting b...

Research may provide new link between soft drinks and weight gain

...ir new data, the researchers now also believe that another factor contributing to the increased fat storage is that the liver metabolizes fructose differently than it does other carbohydrates. "Similar to dietary fat, fructose doesn't appear to fully trigger the hormonal systems involved in the long-term co...

Understanding how bacteria communicate may help scientists prevent disease

...nsing is a hot topic in biology, and small RNAs is another hot topic. The convergence of these topics is exciting, and it has resulted in several additional questions," Kulkarni said. He will address these questions in his Powe-funded research. "We are asking, what are the environmental signals, apart from ...

Hopkins AIDS experts issue warning about global efforts to provide drug therapies

...experts. We do not want this opportunity to become another case where only a few privileged people receive therapy. What international authorities can do is help these countries plan for rationing, so that the medical and ethical mistakes of the past are not repeated." ...

Researchers discover key gene involved in bark beetle pheromone production

... Only for a few hours do they fly from one tree to another to join other bark beetles, mate and start a new life cycle. But other bark beetles know where to locate mates because they are responding to an "aggregation" pheromone. If this pheromone could be disrupted, the beetles wouldn't be able to organize ...

Discovery of New Dopamine Action May Yield Alternative Psychiatric Drugs

...essengers that one neuron launches at receptors on another to trigger a nerve impulse in the receiving neuron...ptors -- one class that transmits signals fast and another that acts through signaling pathways to relay messages more slowly. Dopamine receptors exist in two...

Natural tumor suppressor in body discovered by UCSD medical researchers

...e on it, the UCSD team reasoned that there must be another molecule that will strip off the phosphate and lock Akt in the "off" position. The scientists conducted a database search of the human genome for a phosphatase, which is an enzyme that acts as a catalyst in regulating cellular processes by removing p...

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