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Tag: "movement" at biology news

CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes

... hydrological modelling, which says sediment plume movement in the mid to northern GBR usually go north and never directly flow to the outer reef is spared the direct effects of such river floods. "A re-think is needed now that we know where flood plumes go," says CSIRO scientist Arnold Dekker, "and wha...

Blocking immune cell action increases Alzheimer's-associated protein deposits

...zheimer's, the receptor could be important for the movement of microglia to the site of amyloid-beta deposits. To test that possibility, the investigators used a mouse model of Alzheimer's disease and generated strains in which one or both copies of the CCR2 gene had been deleted. They found that mice la...

Thinking with the spinal cord?

...nal cords generate movements. Still puzzled by movement How humans are able to move at all remains a puzzle. Our muscles are controlled by thousands of nerve cells in the spinal cord. This entire, complex system must work as a whole in order to successfully create a single motion. The new research show...

Scientists map air pollution using corn grown in US fields

...ky Mountains appeared to provide a barrier for the movement of carbon dioxide from fossil fuels. Air in the Mountain West, including Colorado, Idaho and New Mexico, was the cleanest, with about 370 parts per million of carbon dioxide. Air in the Eastern United States, which includes Massachusetts, New...

Lead-'scrubbing' drug may also improve muscle function in lead-exposed children

...cle functions associated with postural balance and movement in lead-exposed children. Led by Amit Bhattachar...produce beneficial effects on postural balance and movement in lead-exposed children. Previous research has shown that succimer chelation therapy can reduce ...

The connector rotation hypothesis? Phage do not pack their DNA by rotation

...scopy. The researchers then looked at connector movement during DNA packaging in six ö29 mutants. After attaching the fluorescent molecules to the connector complex, they set the mutants to work packaging DNA in a flow chamber. As the connectors functioned, the researchers shone homogeneously polarized lig...

NIH announces phase III clinical trial of creatine for Parkinson's disease

...na in Charleston, and the patients will be seen by movement disorders specialists at the NET-PD sites across the United States and Canada. PD is a degenerative disorder of the brain in which patients develop symptoms such as progressive tremor, slowness of movements, and stiffness of muscles. It affects a...

Scientists uncover new target in cancer mutation puzzle

...ess the Ras signals to Rho, and thus shut down the movement of cancer cells. This was a previously unknown mechanism of action for the p53 gene. Someday Rho may prove to be an attractive target for therapy because it is highly active only in malignant cells and not in normal cells. "Now that we understa...

Freeze! Scientists film proteins at work by freezing them at different states

... their study in a resting state and their study in movement is extremely limited due to technological limitations. Today, a French team has made a movie of an enzyme (a protein that catalyses chemical reactions) found in bacteria. “The achievement of this research is two-fold: on one side there is the technol...

Applied scientists create wrinkled 'skin' on polymers

...g desired paths by simply controlling the relative movement of the ion beam and polymeric substrate. It's almost like using an airbrush on fabric. At a smaller scale the desired morphology of wrinkles can be achieved by controlling the ion beam intensity." Because only the areas exposed to the beam are affe...

Common algae helps illustrate mammalian brain electrical circuitry

...ion channel," which reacts to light by stimulating movement toward it. While researchers previously have used channelrhodopsin-2 in a variety of experiments in cell culture, the Duke experiments mark the first time the gene controlling its action has been inserted into the genetic makeup of a living mammal...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...in San Francisco . "Researchers are seeing the movement of penguin populations southward down the peninsula as sea ice lessens along its margins," Lyons said. "Gentoo and chinstrap penguins are shifting south into areas now populated by adelie penguins, and the adelies are being forced further south, all ...

Scientists to track impact of Asian dust and pollution on clouds, weather, climate change

...ion channel," which reacts to light by stimulating movement toward it. While researchers previously have used channelrhodopsin-2 in a variety of experiments in cell culture, the Duke experiments mark the first time the gene controlling its action has been inserted into the genetic makeup of a living mammal...

Racing neurons control whether we stop or go

...crosses the finish line first determines whether a movement is made or not. Though the model accurately explains behavior, it left neuroscientists scratching their heads. Their work found that "go" and "stop" processes are produced through a complex network of interacting neurons. If so, then how could "go" a...

Proteins important in Alzheimer's, Parkinson's disease travel in the slow lane

...tip of the axon, until now, mechanisms of the slow movement of these disease-related proteins have been unclea...he "slow" proteins actually showed rapid bursts of movement followed by pauses. This intermittent transport behavior of individual cargoes made the overall popu...

Carnegie Mellon University research shows how sensory-deprived brain compensates

...ential information to negotiate a burrow or detect movement that could signal a predator's presence. These stiff hairs relay sensory input to the brain, which shapes neuronal activity. In a first, studies of this system by Carnegie Mellon scientists show just how well a mouse brain can compensate when limited...

Is there a pilot in the insect?

...hing behavior, hidden in the insect's cockpit, are movement detector neurons that act as optic flow sensors. The team patiently decoded the functioning of these neurons using ultra-fine microelectrodes (with a diameter of a thousandth of a millimeter) and a specially designed microscope. They then produced an...

University of Alberta researchers unravel intricate animal patterns

...by University of Alberta scientists shows that one movement started by a single individual ripples through the...l mathematical model to describe the formation and movement of animal groups. The work is published in the prestigious journal, "Proceedings of the National Aca...

How badger culling creates conditions for spread of bovine TB

...s Cinegético in Spain: "The evidence suggests that movement of individuals between groups may be instrumental ...that TB rates were lowest when there was the least movement of individual badgers between groups. There have been few experimental studies of the incidence o...

Insomnia drug can improve brain function

...ation of neural circuits in the brain that control movement and verbal expression, but that the lesions that occurred due to oxygen deprivation may have been too severe to allow spontaneous speech. They conclude that single patient trials can be a logical approach to identifying potentially beneficial drugs, ...

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