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Tag: "perform" at biology news

New GI technologies improve internal organ visualization

... The researchers tested the feasibility of EUS to perform angiography in three pigs. EUS was conducted on e...nal wall to vasculature, an EUS-guided approach to perform selective angiography is feasible. Safe access to the vasculature is just the first step to perform...

New egg freezing technique offers hope to hundreds of women

...eggs and, until now, it had been very difficult to perform successful IVF using frozen-thawed eggs. Research by Professor Stefania Nottola and Dr Sandrine Chamayou, presented at the conference, gave examples of the current problems of conventional freeze-thawing and the need for more effective techniques. It...

When the going gets tough, slime molds start synthesizing

...g the forest floor. But these simple creatures can perform heroic developmental acts: when the bacterial food supply dries up, Dictyostelium amebas band together with their neighbors and form a multi-cellular tower designed to save the children. In a forthcoming study in Nature Chemical Biology, investigat...

Life and death in the hippocampus: what young neurons need to survive

... shown that young and middle-aged "exercised" rats perform better on learning tasks such as maze swimming, indicating that new neurons are more than just a backup supply but actually enhance learning. "Remarkably, new neurons are born in the hippocampus, a structure whose function is to acquire new inform...

Heal thyself: Systems biology model reveals how cells avoid becoming cancerous

...e cell may be programmed to also stop dividing and perform a variety of housekeeping chores while it repairs its DNA. If true, the model may demystify the long-standing question of why DNA damage influences the expression of hundreds of genes not involved in the actual repair process. "What we quickly real...

Computational analysis shows that plant hormones often go it alone

...dn't generate any of the data ourselves, we had to perform extensive quality controls to extract meaningful information," explains Hong. The Salk researchers' analysis revealed that surprisingly few genes were switched on by multiple hormones. And when more than one hormone did initiate a similar program, ...

The brain's executive is an 'event planner'

...region's neurons. They then taught the monkeys to perform a complex task in which the animals were required ... the cursor within a maze to reach the goal and to perform those maneuvers in a discrete stepwise fashion with pauses in between. This stepwise approach enable...

Himalayan forests disappearing

...region's neurons. They then taught the monkeys to perform a complex task in which the animals were required ... the cursor within a maze to reach the goal and to perform those maneuvers in a discrete stepwise fashion with pauses in between. This stepwise approach enable...

Invasive species alter habitat to their benefit

...ducing an environment in which native plants don't perform well but the invaders do," said Farrer. "As the environment changes, the cattails get more abundant and change the environment even more, resulting in even more cattails. It's interesting---and sobering---to think that it's not just humans that go ou...

Scientists identify protein with a crucial role in cell death

...ch with its own particular function. To be able to perform their work, cells need energy. And this is what the mitochondria ?which convert oxygen into the necessary energy ?are responsible for. Given this vital function, scientists have suspected that the inner workings of a cell depend largely on how the mi...

Lost in thought: Brain research

...each stimulus, however, participants were asked to perform two different tasks. In one, "introspective" assignment, they were asked to think about themselves and how the image or musical selection made them feel. In the second, "sensory-motor" task, they performed quick recognition exercises ?such as identi...

Scientists reverse evolution

...e worse and disappear. Others persist because they perform a new job that holds some advantage for allowing an organism to adapt. The quadrupling of Hox (and also other genes) a half-billion years ago provided animals with an advantage "because they had more genes to use for specialized jobs," including adap...

Brain-computer link lets paralyzed patients convert thoughts into actions

...ed into actions -- enabling a paralyzed patient to perform basic tasks. In the 13 July 2006 issue of Nature, the researchers present the first published results from the initial participants in a clinical trial of the BrainGate Neural Interface System, a "neuromotor prosthesis" developed by Cyberkinetics ...

Stem cells found in adult skin can be transplanted and function in mouse models of disease

...Kids. The next steps for the research team are to perform similar functional studies for the other cell types that they have shown are made by SKPs, including nerve cells, and to ask whether these SKP-derived Schwann cells can function in situations of human nervous system disease, such as spinal cord injur...

Gene therapy injected into the brains' of mice with Huntington's disease

...k, judge appropriately, control their emotions and perform coordinated tasks. HD typically begins in mid-life, between the ages of 40 and 50. There is no effective treatment or cure for this fatal illness that affects 30,000 Americans and places another 75,000 at risk. Kordower says this research, if eventu...

Study shows frogs can play key role in stem cell research

...ws that the two proteins are not only similar, but perform the same function ?both bind to DNA and activate c.... To find out exactly what function PouV proteins perform in frog embryos, Dr Morrison injected special compounds into very young embryos, to inactivate the n...

UCSD researchers develop 'smart petri dish'

...m the liver rather than the entire animal, you can perform many more thorough tests." "You could also in pri... may be taking. The Smart Petri Dish allows us to perform a large number of such toxicity assays simultaneously, in order to provide an early indication of th...

Gut microbes' partnership helps body extract energy from food, store it as fat

...ifferent microbial species, and the functions they perform affect each other and their hosts. Gordon's lab models the interactions between friendly gut microbes and their hosts using gnotobiotic mice. These mice are raised in a manner that keeps them germ-free. They are then colonized with one or more huma...

Scientists take 'snapshots' of enzyme action

...substrate -- came together at a particular time to perform the function of transferring an oxygen atom from the enzyme to the substrate. "Our finding shows that the substrate and cofactor are binding to the enzyme alternately, not together," Swaminathan says. First, the cofactor (known as NADPH) binds to a ...

MUHC announces a transplant first in Quebec

... I had unquestioned confidence in their ability to perform this complex surgery," says Patrice Dionne. "I'm so thankful that I will now be able to enjoy this fathers day with my three sons." "As a comprehensive Multi-Organ Transplant Program, we are accustomed to collaborating with other institutions acros...

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