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Tag: "movement" at biology news

Cells direct membrane traffic by channel width

...l walls in all forms of life. They allow for water movement between the cell and its environment. A subfamily of aquaporins allows slightly larger molecules, such as glycerol, to pass, too. In humans, 11 aquaporins have been identified, mostly in the kidney, brain and lens of the eye. Impaired function has be...

Surgical Robot 'Scrubs In' At UNC, May Be More Precise Than Conventional Surgery

...tremor. Surgeons can scale, or ratio, their finger movement to that of the robotic instrument. A movement of inches at the console can be scaled down to centimeters in the patient. "This can re-introduce p...

Screen all at risk for HIV, plus pregnant women

...tremor. Surgeons can scale, or ratio, their finger movement to that of the robotic instrument. A movement of inches at the console can be scaled down to centimeters in the patient. "This can re-introduce p...

FDA: 'Highly Unlikely' Green Tea Lowers Cancer Risk

...tremor. Surgeons can scale, or ratio, their finger movement to that of the robotic instrument. A movement of inches at the console can be scaled down to centimeters in the patient. "This can re-introduce p...

New research puts a fresh spin on current thinking of speech evolution in humans

...nd facial motor responses were evoked ?such as jaw movement sequences, as well as respiratory responses. In addition, Broca's area is connected with a region of the brain immediately in front of it that is involved in the retrieval of information from memory. "These connections suggest to us that Broca's are...

NCAR analysis shows widespread pollution from 2004 wildfires

...ns as far away as the Azores in order to track the movement of carbon monoxide and ozone from the wildfires. As a follow-up, she and other scientists plan to use a similar combination of observations, modeling, and numerical techniques to look at both natural and human-related emissions of carbon monoxide in ...

Bone marrow stem cells may heal hearts even years after heart attacks

...entricular function by 15 percent, infarction wall movement velocity rose 57 percent, and there was a significant reduction of infarct size by 30 percent. Concerning all those parameters, no significant changes were seen in a representative control group. Moreover, after bone marrow cell transplantation, an i...

Amphetamines reverse Parkinson's disease symptoms in mice

... dopamine. The finding that amphetamines can alter movement independently of dopamine opens up new directions ...ses. Symptoms of the disease include tremors, slow movement or an inability to move, rigid limbs and a shuffling gait. Progression of the disease also leads to ...

Smoking damages key regulatory enzyme in the lung

...g, researchers could measure the concentration and movement of the radiotracer and MAO A, a subtype of the enzyme crucial to mood regulation and one that breaks down chemical compounds that elevate blood pressure, said the Society of Nuclear Medicine member. In the study, "Comparison of Monoamine Oxidase A i...

Prenatal exposure to marine toxin causes lasting damage

...s to determine the effects of early domoic acid on movement and working memory. Rats with a history of domoic acid exposure showed greater initial activity in a maze test than control rats, followed by a rapid decline. Moreover, domoic acid exposure affected cognitive function in complex ways, the researche...

Retinal scans eyed for New Mexico show cattle

...t will eventually mean the full tracking of animal movement throughout the nation, he said. The announced USDA target for a mandatory animal identification program is January 2009, said Ron Parker, an animal ID specialist with NMSU Extension and the New Mexico Livestock Board. At that time, all animals enter...

Einstein scientists discover how protein crucial for motion is synthesised at the right place in the cell

... translated into the actin protein that makes cell movement possible." Understanding how actin synthesis is spatially regulated in motile cells could lead to new cancer therapies. "In cancer," says Dr. Singer, "we know that expression of ZBP1 correlates with benign tumors, while suppression of ZBP1 is associ...

Cyberkinetics, Case to develop system to help restore extremity function

... injury (SCI). The joint project will combine limb movement technology developed at Case and the FES Center wi...erface System (BrainGate System) to sense intended movement and generate command signals. The command signals would drive a hybrid FES-orthosis, an orthotic dev...

Pulp mill devastates swans' sanctuary in Chile

...environment and human health. A growing citizen's movement has kept case under the spotlight, as never before for an environmental issue in Chile. Although a series of lawsuits and other actions to force stronger action against the company have not so far succeeded, the case is now being heard by the Interam...

First big influenza genome study reveals flu evolution

... detailed snapshot scientists have gotten of flu's movement through communities." Across New York State, the researchers documented at least three distinct subpopulations (variants) of the H3N2 influenza virus over the five-year study period. In some of the flu seasons studied, these variants circulated sim...

Membrane research opens window to benefits for plants, humans

... that opens and closes a gate that regulates water movement in and out of cells. Not only was the discovery the first for a plant-water channel, it was the first plant-membrane channel for which an atomic resolution structure has been determined. "By recovering an X-ray structure of a plant-membrane channel ...

Scientists use stem cells to grow cartilage

...ue usually found between bones to allow the smooth movement of joints. Research to be published in Tissue Engineering shows how the Imperial team directed embryonic stem cells to become cartilage cells. This could allow doctors to grow cartilage for transplantation for a number of injuries and medical probl...

Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

...oots of 80% of all land plants had any role in the movement of atmospheric carbon to soil (fixed by plants in ... but they were not known to play any role in the movement of carbon through the soil. The researchers developed novel soil cores that were engineered with op...

Marathon of nano-sprinters

...rs pull latex beads along these filaments, and the movement of the beads is observed under the microscope. ...ulling motors. One obvious consequence is that the movement of the cargo is slowed down. In addition, the force felt by each pulling motor strongly increases th...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...teins that interact with actin filaments for motor movement and muscle contraction. Myosin V is the workhorse of the myosin protein family. It exists to ferry a cargo of proteins needed in a specific place at a specific time. Fueled by hydrolysis -- the process of converting the molecule adenosine triphosph...

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