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Tag: "can" at biology news

Math that powers spam filters used to understand how brain learns to move our muscles

...most perfectly. “We found that this Bayesian model can explain almost all of the phenomena we observe in regard to learning motor movements,” says Shadmehr. Beyond possible use in helping stroke patients, the new tool might also be applied to better understand how we learn language, develop ideas and...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

...researchers have demonstrated in mice that smoking can cause changes in the DNA sequence of sperm cells, ...gy Division. “We have known that mothers who smoke can harm their fetuses, and here we show evidence that fathers can potentially damage offspring long bef...

Old memory traces in brain may trigger chronic pain

...as been published on-line.) “In some ways, you can think of chronic pain as the inability to turn off...RI. “It’s cumulative memory,” he explained. “I can predict with 90 percent accuracy how many years they have been living in that pain without even aski...

Gene therapy delivery of nerve growth factors reverses erectile dysfunction in animal model

...t rely on the chronic administration of drugs that can have potentially harmful side effects," he explained. ...

Researchers track how spores break out of dormant state

...he formation of metabolically dormant spores. They can remain dormant for extended periods and, partly because of their tough spore coat, have a significant resistance to extreme environmental factors including heat, radiation and toxic chemicals. However, once in favorable conditions, spores break the d...

Modeling the restless brain

...ng diagram, its neuroanatomy. Their model also can show how slow 5- to 10-second fluctuations of activity emerge naturally from much faster, chaotic neural interactions that typically last only a few milliseconds. "Our model suggests that the cortical resting state is not time-invariant, but inst...

Simulations unravel outer membrane transport mechanism

...s that form a tunnel through which large molecules can pass. Another region of the protein, the luminal d.... “The good thing about simulations is that you can monitor the position of every atom,” Tajkhorshid said. The task was enormous, however. “The fu...

How sneaky HIV escapes cells

... prevailing belief that HIV and other retroviruses can only leave and enter cells by virus-specific mecha...g their basic biochemistry and cell biology, which can yield a better understanding of normal human biology as well as identify new avenues in the fight ag...

Snoring in children might be an allergic type disease

...looks and sounds similar in adults and children it can have quite different causes and risk factors. The...or inflammatory diseases and snoring. “Snoring can be an early manifestation of more serious sleep-disordered breathing, so it’s not necessarily a harm...

CSIRO scientists join fight to save 'Tassie devil'

...to determine if any chemical or structural changes can be detected that can be correlated with the disease. “We are hoping we can work together to develop a pre-clinical d...

The insect vector always bites twice

...end. The pathogens responsible for these diseases can be viruses, bacteria or protozoans which are passe...numerous proteins, including immunogenic ones that can modulate or induce a human immune response. Working for the EpiVect programme initiated in 2003 (1),...

A new plant-bacterial symbiotic mechanism promising for crop applications

...umes living in symbiotic association with bacteria can contribute to vegetation regeneration schemes on s...on or desertification. The plant cover thus formed can help achieve ecological restoration, by enriching the soils in nitrogen. However, the symbiotic proc...

Hormone helps mice 'hibernate,' survive starvation

... impacts these processes. “We want to see if we can get some benefits of eating less without actually eating less,” he said. Manipulating the PPAR-alpha-FGF21 signaling pathway might ultimately prove to be a vital part of the ongoing search for new therapies for human obesity and other metabolic co...

Research team identifies new Alzheimer's gene

...sample populations, more powerful array chips that can distinguish more genetic markers, and more sophisticated methods of analyzing the data....

Bigger horns equal better genes

..., such as deer and sheep, that horn or antler size can be a good indicator of an individual's quality and...lot of energy to build and then carry around. They can be a meter long and are quite heavy, and the ibex carries them for their lifetime, unlike antlers wh...

How to lose weight and not go hungry: HU researcher develops drug that mimics feeling of 'fullness'

... a compound linking two or more amino acids) which can serve as an analog to the naturally occurring aMSH hormone. They were able to demonstrate that their peptide, which they call BL-3020, displayed good metabolic stability to intestinal enzymes when swallowed, and that it was able to cross the intestin...

Envisat captures first image of Sargassum from space

...ehind Grid computing is that anything one computer can do, a pool of computers can do faster and better, enabling the solution of massively complex tasks beyond the capabilities of a ...

Dirty snow may warm Arctic as much as greenhouse gases

...ned that a lesser-known mechanism -- dirty snow -- can explain one-third or more of the Arctic warming pr...ence at UCI and co-author of the study. “Dark soot can heat up quickly. It’s like placing tiny toaster ovens into the snow pack.” The study appears this...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

... quantities of the encoded protein, whose function can now be easily studied. In research published in t...e genes expressed in a convenient yeast system, we can work to understand the molecular basis of anti-malarial drug resistance, providing insight into how ...

Loss of stem cells correlates with premature aging in animal study

...ut when these stem cells are needed, their progeny can rapidly divide and are able to replenish the tissue with new cells. Brown explains that in the current study the mouse cells without ATR had an overwhelming amount of DNA damage and could not contribute to tissue renewal; nevertheless, the 10 to ...

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