Tag: "damaged" at biology news
Doernbecher Children's Hospital scientist earns coveted Javits award
...e calledhyaluronic acid (HA) that builds up in the damaged
white matter andprevents the normal production of ...he myelin needed to restoregreater function to the damaged
brain," Back said. Back is the second OHSU researcher to receive this highly covetedaward. In 2002...
Rain forest protection works in Peru
...uare miles per year respectively. About 86% of the damaged
Peruvian areas were concentrated in two regionsin the Madre de Dios, east of Cuzco, and in the central eastern part of the country near Pucallpa. Most of the rain forest damage75%was found within 12.5 miles (20 km) of the nearest roads. However, even...
New test improves detection of liver cancer
...er diseases in which the normal liver cells become damaged
and are replaced by scar tissue. This reduces the amount of healthy liver tissue, and the accumulation of scar tissue disrupts the development and functioning of this complex organ. Cirrhosis of the liver has various causes, including: excessive use ...
Link identified between Alzheimer's disease and glaucoma
...can tackle glaucoma, then potentially we could use damaged
retina to screen Alzheimer's drugs that target beta-amyloid build up."...
Not all embryonic stem cell lines are created equal
... and other cells that can be implanted to restored damaged
tissue. To the best of my knowledge, until now there have been few functional studies of the neurons derived from embryonic stem cells, said Sdhof. People in the field have traditionally been interested in whether they can make neurons and what molec...
Unknotting DNA clue to cancer syndrome
...an intact chromosome can act as a template for the damaged
one. The DNA strands are then exchanged to form four-way structures called Holliday junctions. To complete repair, these junctions are resolved in one of two ways: either leaving the original chromosomes intact, or exchanging the chromosome arms to f...
Where broken DNA is repaired
...oser to an answer. By comparing computer models of damaged
human DNA with microscopic images of human cells t...s "into artificial microscope images of a nucleus damaged
by radiation." To do this, says Costes, "I simulated the optical transformation when imaging even...
Under magnetic force, nanoparticles may deliver gene therapy
...r delivering gene therapy to benefit blood vessels damaged
by arterial disease. The nanoparticles are extre...he nanoparticles for gene therapy in blood vessels damaged
by vascular disease. He suggested that the nanoparticles might find broader application, such as del...
New UD tissue-engineering research focuses on vocal cords
...d of soft, strong and long-lasting hydrogels, into damaged
tissue to improve its pliability and prevent scar formation. In the second approach, the scientists want to form functional tissue from a combination of vocal fold connective tissue cells (fibroblasts), artificial extracellular matrix, and biologic...
Fish eyes could hold clue to repairing damaged retinas in humans
...e cells known as Mller glial cells to regenerate damaged
retina in humans, according to a study published t... losing or has lost their sight due to diseased or damaged
retina," says Dr Astrid Limb, who led the study. "Our findings have enormous potential. "It may be...
American Chemical Society's Weekly PressPac -- July 25, 2007
... research shows promise for repairing or replacing damaged
nerve cells to treat such diseases. However, many barriers hinder efforts to move those therapies from lab to clinic. The use of small molecules compounds that include most drugs to generate new nerve cells from easily available cells or tissues w...
Caffeine and exercise can team up to prevent skin cancer
... killing off precancerous cells whose DNA has been damaged
by UVB-rays. The studies, conducted in the Susan...exposed to lamps that generated UVB radiation that damaged
the DNA in their skin cells. Some degree of programmed cell death, also known as apoptosis, was o...
Nature's weapon against nerve agents
...rying nerve impulses between cells. When cells are damaged
or dying, however, as on exposure to nerve agents or as a result of other forms of brain injury including stroke or disease they release far more glutamate than normal, over-exciting and killing nearby nerve cells. In related work published earli...
Using stem cells to help heart attack victims
...his could facilitate their use in regenerating the damaged
hearts of heart attack victims. Dr Chris Denning, of the Universitys Wolfson Centre for Stem Cells, Tissue Engineering & Modelling, said: Human embryonic stem cells promise unrivalled opportunities. However, they are difficult, time-consuming and ...
System to analyze beating heart stem cells could lead to heart attack treatments
...his could facilitate their use in regenerating the damaged
hearts of heart attack victims. Human embryonic stem cells promise unrivalled opportunities. However, they are difficult, time-consuming and expensive to grow in the lab, Dr Denning explains. Our understanding of how to convert them into cardiomyo...
U-M team identifies gene that regulates blood-forming fetal stem cells
...e provide replacement cells when adult tissues are damaged
or wear out. Stem cells that form blood and immune-system cells are called hematopoietic stem cells. In the latest study, Kim and Morrison looked for genes required to maintain hematopoietic stem cells in fetal mice, but not in adult mice. They fou...
Females more prone to brain damage from alcohol abuse
...p," Wiren said. The genes respond with "removal of damaged
proteins. The females have all this apoptosis (cell death) going on, and the males instead may have repair going on." Such brain damage may underlie debilitating cognitive dysfunction and motor deficits observed in some alcoholics, according to the...
Prenatal alcohol exposure alters brain activity in the frontal-striatal areas
...ht to be responsible for behavioral inhibition are damaged
by prenatal exposure to alcohol. For this paper, researchers examined 22 children and adolescents (ages 8 to 18), part of a larger study at the Center for Behavioral Teratology, San Diego State University, which is overseen by study co-author and...
Radiation therapy combined with microsurgery shows promise for curing injured spinal cord
...8 peer-reviewed journal PLoS ONE. Since repair of damaged
cord directly correlates with prevention of paralysis, this research demonstrates that conventional clinical procedures hold promise for preventing paralysis from spinal cord injuries. Currently there is no cure for human spinal cord injury. Treatm...
Effects of aging in stem cells
...ls combat the aging process by replenishing old or damaged
cellsparticularly in the skin, gut, and bloodwith a fresh supply to maintain and repair tissue. Unfortunately, new evidence published in the open-access journal PLoS Biology suggests that this regenerative capacity also declines with age as stem cell...
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