Tag: "switching" at biology news

UC experts detail new standard for cleaner transportation fuels

...re opportunities for double benefits here, such as switching to electricity for freight handling or for overnight truck use, which reduces carbon emissions, air pollution and noise. Biofuel farmers and manufacturers: Growing more biofuel crops (feedstocks) will have mixed effects on greenhouse-gas emis...

Unlocking proteins from their cellular shell

...em cells that show they generate their own forces, switching on and off development of different cell types," Dennis Discher, professor of chemical and biomolecular engineering at Penn, said. Proteins are the molecular instigators for almost every biologic action and reaction in living things. Their assembly ...

Changing climate will challenge Northeast agriculture, CU expert warns

...would have several more decades to adapt, possibly switching to different varieties or crops," he said. Of perhaps greatest concern in the next few decades, he stressed, is increased pressure from aggressive, invasive insect, disease and weed pests. Many of the most aggressive weeds, research shows, grow faste...

Turn-ons and turn-offs for neurons

...in. Indeed, the epigenetic mechanisms in charge of switching genes on or off play an essential role when our brain learns and stores information, and when our brain reacts to injury and disease. ...

Changes in chromosomal constitution of preimplantation embryos suggest caution in genetic screening

... help us make optimal decisions about the value of switching to a different assisted reproduction technique, for example egg donation....

University of Washington researchers play leading role in major study of human genome function

...regulatory elements" that contain instructions for switching genes on or off, and for controlling how DNA is packaged and replicated within a human cell. Scientists believe these DNA sequences may play a very important role in some diseases, such as prostate or colon cancer. The UW was a leading institution...

Growing nerve cells in 3-D dramatically affects gene expression

...whopping 1,766 genes responded differently, either switching on or switching off. To check their work, researchers repeated the experiments but this time produced multiple copie...

Light sticks may lure turtles to fishing lines

...e the lights harder for turtles to see. Similarly, switching to colors that turtles cant detect very well might also reduce turtle deaths. All sea turtles are endangered species. A recent estimate published in the journal Ecology Letters suggests 200,000 loggerhead and 50,000 leatherback turtles may die each...

AGU Journal Highlights -- April 16, 2007

...een the 1997 and 1999 events resulted from the PDO switching to a cold regime in the east during the early 21st century. Further, the authors noted that the bloom's timing and magnitude, as well as species shifts associated with fluctuating ice margins coupled with gradual ecosystem changes associated with glo...

Counting heads or measuring space?

... their neighbours as to whether or not it is worth switching certain genes on or off. This communication between bacterial cells is essential for the adaptation to changing environments and for the survival. What exactly do bacteria learn from the signal substances? There have been two theories: the release of...

MIT device draws cells close -- but not too close -- together

...t four cell widths. The assembly is geared so that switching between these two settings involves a movement of two millimeters, an amount controllable by the human hand. Hui selected 80 micrometers as the gap setting because at shorter distances, cells sometimes migrate across the gap and end up touching. And ...

Human pubic lice acquired from gorillas gives evolutionary clues

...g what it takes for a parasite to be successful in switching hosts adds to our knowledge about what makes a good host for the spread of disease." Working with other scientists who collected lice from primates in Ugandan wildlife sanctuaries, the research team extracted DNA from the lice and used fossil data...

Drivers and passengers on the road to cancer

... mutations. Kinases can act as a series of relays, switching on and off in our cells, to control cell behaviour, such as cell division. Dr Futreal explains: "For example, we found that a group of kinases involved in the Fibroblast Growth Factor Receptor signalling pathway was hit much more than we expected, ...

Monochloramine treatment not as effective in protecting drinking water

...o account if they have switched or are considering switching to a monochloramine disinfection system," says Dan Kroll, Chief Scientist at Hach Homeland Security in Loveland, Colorado, and lead researcher on the study, presented today at the ASM Biodefense and Emerging Disease Research Meeting. As part of a r...

Cold Spring Harbor Laboratory scientists discover new gene that prevents multiple types of cancer

...either stop dividing or to undergo cell suicide by switching on a battery of potent tumor protective machinery. This work indicates that pharmaceuticals that switch on CHD5 may provide a way to treat many types of human cancer. The research team worked with mouse models which enabled them to investigate the...

Salmonella survives better in stomach due to altered DNA

...haves to survive various "extreme" conditions, the switching on and off of 500 genetic characteristics was studied. This happened under different conditions such as in a hot, acid or oxygen-free environment. Almost all of the survival characteristics were found to be active under all conditions, whereas the pa...

Turning a cellular sentinel into a cancer killer

...ing cancers. And researchers were not sure whether switching p53 back on in tumor cells would have any therapeutic effect. "It had been demonstrated that overexpressing p53 at very high levels could arrest or kill tumors, said Lowe. "But at such high levels, p53 might not be working through a physiological mec...

'Quiet revolution' may herald new RNA therapeutics

...sity of Oxford have identified a surprising way of switching off a gene involved in cell division. The mechanism involves a form of RNA, a chemical found in cell nuclei, whose role was previously unknown, and could have implications for preventing the growth of tumour cells. RNA plays an important and direct...

Bumblebee house warming -- it takes a village

...them shiver to transfer the heat," he said. "Task switching was previously thought to be common among bumblebee workers," said O'Donnell. "But this study indicates that there is strong specialization in labor among individuals, and body size seems to play a role in what jobs they perform. In addition, their...

Why are lions not as big as elephants?

...x or larger can obtain higher net energy intake by switching to relatively large prey, the difficulty of catching and subduing these animals means that a large-prey specialist would expend twice as much energy as a small-prey specialist of equivalent body size. In a new article published by PLoS Biology, Dr. C...

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(Date:7/31/2014)... An experimental vaccine protected 100 percent of animal models ... difficile , which causes an intestinal disease that kills ... of print in Infection and Immunity . ... and non-human primates against the purified toxins produced by ... orogastric spore infection, a laboratory model that mimics the ...
(Date:7/31/2014)... discovered the photovoltaic effect in 1839, humankind has sought ... for its own purposes. In a new research report ... FASEB Journal , scientists may have uncovered ... by focusing on a naturally occurring combination of lipids ... persistence over time and across speciessuggests that this specific ...
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