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Tag: "limbs" at biology news

Mutating the entire genome

... formation, resulting in short, malformed tail and limbs in the mutant mouse on the left, compared with the...on, resulting in mutant mice with abnormally short limbs and tail (see photo with this news release)....

A 'traffic light' for neurons means 'go' for improving brain research

...al columns, perhaps restoring some function to the limbs of paralyzed patients. Finally, the technique could be useful in teasing out the largely unknown functioning of healthy brains. "One day we'd like to be able to understand the organization of the brain," Zhang says. "How do different types of c...

Gene found for rare disorder may reveal new pathway in mental retardation

...h, heart defects, feeding problems, deformed upper limbs and distinctive facial features. In the current study, mutations in two genes of interest cause mental retardation, but with less pronounced facial features and none of the limb defects, such as missing hands or fingers, that are hallmarks of clas...

Robotic therapy helps restore hand use after stroke

...ed therapy may help rewire the brain and make weak limbs move better long afterwards." Previously, robotic devices have improved post-stroke shoulder and leg function. Cramer said this study is one of the first attempts to specifically aid hand function. Cramer presented HOWARD study findings yesterday ...

Paleontologists discover new mammal from Mesozoic Era

...and worms. It has a long body, short and sprawling limbs and claws that were ideal for either digging or living on the ground. In addition to its unique ear structure, Yanoconodon also has a surprisingly high number of 26 thoracic ("chest") and lumbar ("waist") vertebrae, unlike most living and extinct ...

Nanoparticles can track cells deep within living organisms

... to improve the blood supply to diabetic patients' limbs or to repair blood vessels after a heart attack or bypass surgery. Tracking nanoparticle-labeled cells used in such treatments by MRI imaging would allow physicians to monitor the treatment's success or failure. The nanoparticles ?called "nano" b...

Ape gestures offer clues to the evolution of human communication

...nzees use manual gestures of their hands, feet and limbs more flexibly than they do facial expressions and vocalizations, further supporting the evolution of human language began with gestures as the gestural origin hypothesis of language suggests. This study appears in the current issue of the Proceedings...

Research project tackles 'regeneration' gap

...d blood ?with scientists who study how tissues and limbs develop in a variety of organisms. "A salamander can be injured to the point that it loses its limbs or part of its spinal column, yet a few weeks later you’ll see it scurrying across your lanai," said...

Drug can quickly mobilize an army of cells to repair injury

...nts, who can suffer from poor circulation in their limbs that causes pain or sores and may lead to amputation. The potential of the two drugs for treating such conditions was addressed in another study by the research group, also published in a recent issue of Blood, which tested the effect of both AMD310...

Ancient birds flew on all-fours

... have an aerodynamic structure that imply its rear limbs likely acted as lift-generating "winglets" that played a significant role in flight. ...

ABCB6 is key to production of heme in hemoglobin

... problem that triggers pain in the chest, abdomen, limbs or back, as well as paralysis, cramping and personality changes or mental disorders. "Also, people with porphyria can suffer sudden, acute attacks if they take certain tranquilizers and other drugs that interfere with this system," Schuetz said. "So ...

Leptin found to control appetite and limb development in frogs

... that there are receptors in the tadpole's waiting limbs that crank up cell division when leptin signals are received. "This hormone sets the stage for growth, both signaling to the brain that there are sufficient energy stores and perhaps directly promoting tissue growth and development." The timing of me...

Federal testing for mad cow disease a failure, law review editor says

...ans as BSE does in cattle. Muscle control is lost, limbs become uncontrollable, and voices become erratic and strangely pitched. A 14-year-old English girl, for example, cried for two weeks straight and then began screaming before she died. His article is titled, "Food Safety vs. Promotion of Industry: Ca...

Study shows pine bark naturally decreases severe chronic venous insufficiency

...skin alterations, pain during walking and swelling limbs than Daflon®, a combination of diosmin and hesperidin and a commonly prescribed drug used to treat CVI. About 500,000 people in the United States develop leg ulcers due to CVI. If left untreated, leg and ankle swelling can lead to dangerous condit...

Survivors of childhood polio do well decades later as they age

...complete return to normal function to paralysis of limbs to acute death. Following the illness, most patients are worried about their long-term prognoses, according to Dr. Sorenson. To conduct this study, the researchers randomly selected a group of 50 polio survivors from the general population of Olmst...

How ancient whales lost their legs, got sleek and conquered the oceans

...uring the next 15 million years, losing their hind limbs in a dramatic example of evolutionary change. "We...ted their hind limbs. During the transition, their limbs became smaller, but they kept the same number and arrangement of hind limb bones as their terrestria...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...ned the ability to bear weight on the GDNF-treated limbs and to take steps and push away with the foot on that side of the body. "This research represents significant progress," says David Owens, Ph.D., the NINDS program director for the grant that funded the work. "It is a convergence of embryonic stem c...

UF scientists discover evolutionary origin of fins, limbs

...ic instructions used to construct and position our limbs were being perfected more than half a billion year...discovered that the genetic circuitry for building limbs first appeared in an entirely different place - the midline of the animal." The appearance of pair...

UF scientists trace origin of shark's electric sense

...ment, and have been used to explore the origins of limbs and brain cells. In the current research, scientists used genetic markers to trace neural crest cells. "Dye labeling would be interesting and further test the idea that electroreceptors contain neural crest cells," Cohn said. ...

How the octopus forms an elbow

...ral features and control strategies in articulated limbs (for example, jointed vertebrate arms) and flexible octopus arms suggests that these qualities have evolved convergently in octopuses and in vertebrates, and it also suggests that an articulated limb--controlled at the level of joints--is the optimal...

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