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Tag: "turned" at biology news

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...ltural runoff on the gulf, the Stanford scientists turned their attention to one of Mexico's most productive coastal farming regions-the Yaqui River Valley, which drains into the gulf. "The Yaqui Valley agricultural area is 556,000 acres [225,000 hectares] of irrigated wheat," Matson said. "The entire vall...

Study reveals dramatic difference between breast cancers in US and Africa

...f gene expression -- a measure of which genes were turned on and active -- in breast cancer tissue from 378 women in Nigeria and Senegal. They compared the results with a database of breast cancer tissue from 930 Canadian women compiled by Charles Perou and colleagues in North Carolina and British Columbia....

Man-made wetland's effectiveness similar to natural marsh

... over a farm field. Or the wetland itself could be turned into a field again, assuming there are other wetlands nearby to take its place." The story isn't quite the same with nitrates ?a nitrogen-based compound found in fertilizer. "As a wetland gets older, it gets better at handling and storing nitrogen,...

Master gene controls healing of skin in fruit flies and mammals

...rly. Confirming her suspicions, the mutant embryos turned out to be much more permeable to a dye than normal embryos. The group also showed that the genes active in the mutant flies' lesions were activated in normal flies in cells surrounding a wound created with a sterile needle. The researchers then work...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...n. Romesberg reasoned that since mutations can be turned on full-force, perhaps they could be shut off as w...the antibiotics ciprofloxacin and rifampicin, they turned on their mutation pathways and rapidly evolved resistance to the antibiotics. Wanting to find the pr...

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage

...t. "Egr proteins regulate which cellular genes are turned on or off so we think that high-level expression of Egr proteins instructs cells to express the set of cellular genes necessary to become a gamma-delta T cell." Understanding the development of critical components of the immune system can lead to sc...

Venom doc tracks down snake bioweapons

...illion years of 'evolutionary tinkering' that have turned these proteins into potent, highly specific snake venom toxins," Fry concluded. ...

Researchers pioneer new gene therapy technique using natural repair process

...developed leukemia because the virus inadvertently turned on a cancer gene. Dr. Porteus' strategy differs fundamentally from previous gene therapies because it essentially replicates the natural process, which is more accurate. This accuracy means that, in practice, the gene therapy only affects the mutant...

DNA constraints control structure of attached macromolecules

...ke a switch, a particular molecular shape could be turned on and off. "Another key aspect of DNA constraints is their programmability," Silverman said. "By placing two or more constraints on one molecule, we could generate multiple molecular states that would be programmable by DNA sequence. In other effor...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...any small sea creatures; other sampling techniques turned up relatively large specimens, including sea cucumbers up to 20 centimeters long. In addition to collecting a large number of unfamiliar specimens, Census scientists use DNA extractions to discern previously unknown differences between species and i...

UN successfully tests 'green' pesticide against locusts

...ke a switch, a particular molecular shape could be turned on and off. "Another key aspect of DNA constraints is their programmability," Silverman said. "By placing two or more constraints on one molecule, we could generate multiple molecular states that would be programmable by DNA sequence. In other effor...

Health costs soar as 60 million Americans classed as obese

...ke a switch, a particular molecular shape could be turned on and off. "Another key aspect of DNA constraints is their programmability," Silverman said. "By placing two or more constraints on one molecule, we could generate multiple molecular states that would be programmable by DNA sequence. In other effor...

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

.... In the case of diabetes, insulin's availability turned a once-fatal disease into a chronic, manageable, lifelong one, like antiretroviral therapy has done for HIV. However, the researchers point out that what ensued was a mess. In a completely haphazard fashion, medication went to family members of promi...

Natural tumor suppressor in body discovered by UCSD medical researchers

...natural tumor suppressor that could potentially be turned on in certain cancer cells to prevent the formation of tumors has been discovered by researchers at the University of California, San Diego (UCSD) School of Medicine. Located on chromosome 18 and called PH domain Leucine-rich repeat Protein Phosphat...

Protein synthesis can be controlled by light, opening way for new scientific, medical applications

...which uses so-called "caged compounds" that can be turned on with light, could lead to more intricate studies of such important but poorly understood processes, such as protein synthesis in nerve synapses. The research was published today in the journal Chemistry & Biology. Coauthors on the paper are S...

Random gene expression may drive HIV into hiding

...e progeny did not all show the same behavior: some turned their viral expression on high and others turned it off. This dichotomy in cell fate from genetically identical cells is consistent with the idea th...

Research on antibiotics receives historical recognition

... the soil, but it was not until late 1930s that he turned his attention to the searching for microbes that attacked other microbes. Waksman received the Nobel Prize for physiology or medicine in 1952 for "ingenious, systematic and successful studies of the soil microbes" that led to the discovery of strept...

Recombinant DNA technology may enable oral, rather than injectable, delivery of protein drugs

... the protein coded for by the inserted DNA. As it turned out, this was the case as well for the transferrin/G-CSF combination. "Our recombinant fusion protein was administered orally, and when tested in mice, increased the white blood cell count for three days, whereas the injectable agents only maintain ...

Novel live reporting system to track cells

...on of TET. When they stopped the TET, the "switch" turned on, triggering ferritin molecules to increase their numbers, thereby causing an increase in iron uptake within the tumor cells. The contrast between the iron content in these and in the normal surrounding cells showed up in the MRI (which is sensitiv...

Study: Well-known protein helps stem cells become secretory cells

... a normal fruit fly embryo to see which genes were turned on when. All 34 genes were expressed at high levels in the early salivary gland, they found. According to Andrew, "This suggests the salivary gland becomes programmed for secretion because all the components required to allow secretion to occur are '...

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