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Tag: "replacing" at biology news

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

... many researchers have been trying to find ways of replacing the lost neurons. One possible way to do this would be to transplant new neurons that are grown from embryonic stem cells or neural progenitor cells. However, this type of treatment is very difficult for technical reasons. The new study, conducted...

Scientists tie several cancers to common 'oncogene engine'

...unk by disabling one of the transcription factors, replacing it with another member of the family re-started the tumor's growth.In the short term, clinicians will attempt to exploit this interconnectedness by using therapies that may be effective against one tumor to try to treat other tumors, said Fisher. "In...

Smell of success for nanobiosensors

...ollutants or scan for drugs and bombs at airports, replacing chemical sensors that are only able to detect a single substance. ...

Scientists discover why cornea is transparent and free of blood vessels, allowing vision

...und that vessel growth continued to be suppressed, replacing the normal anti-angiogenic role of the epithelium. Finally they exposed intact corneas to an agent that blocked VEGFR-3 and found that blood vessels began to grow, formally demonstrating that the corneal epithelium is key to suppression of blood ves...

Connect the Quantum Dots

...pecific disease markers in biological samples thus replacing conventional organic dyes in a diversity of imaging and sensing applications." Fluorescence microscopy and spectroscopy have become invaluable analytical tools in biomedical research but rely on the fluorescence of organic dyes which have limited lu...

Can you hear me now? Scientists find previously unknown receptors on adult stem cells

...m normally serves as an effective means of quickly replacing cells that are damaged or killed while keeping us healthy. But investigators suspect that the system also can be detrimental in certaincircumstances -- for example, in leukemia patients that are vulnerable toinfections after receiving bone marrow or ...

Wild bees and the flowers they pollinate are disappearing together

... small number of common generalist pollinators are replacing a larger number of rarer specialist species. Stuart Roberts from the University of Reading pointed out: "In Britain, pollinator species that were relatively rare in the past have tended to become rarer still, while the commoner species have beco...

U of M researchers discover genetic key to treating deadly fungal infections

...tes one arm of chromosome 5 and deletes the other, replacing it with the duplicate arm. The altered chromosome is known as an "isochromosome." The effect of the duplication is to help the cell tolerate the antifungal drug, thus allowing the yeast to continue growing despite the presence of the drug. The di...

African parasite makes component of fat differently from all other organisms

...ite avoids detection by the human immune system by replacing each of the 10 million proteins on its outer layer - known as the cell membrane - with different proteins that are not recognized by immune cells. These proteins are attached to the cell membrane by an anchor composed in part of a fatty acid only 14 ...

New fruit fly protein illuminates circadian response to light

...e the behaviors in the jetlag flies by genetically replacing the mutated gene sequence with the normal sequence, which led to the production of the wild-type (control) JET protein. When the jetlag flies acquired the normal JET protein, regular TIM degradation took place and the fruit fly was better able to adj...

Salmon go veggie to save wild fish stocks

... Oceans, Canada, have been studying the effects of replacing anchovy oil with canola oil (also known as rapesee...A4], find that the fish suffer no ill effects from replacing up to 75% of the dietary lipid (mainly from fish oil) with canola oil. "We are finding that as long...

New 'implanted contacts' designed to fix nearsightedness

...ns in front of the eye's natural lens, rather than replacing the natural lens as other implanted lens do, said ...er than reshaping the eye, as in laser surgery, or replacing the eye's natural lens, as with intraocular lenses, the collamer lens is inserted with a smaller i...

Genetically engineered mosquitoes show resistance to dengue fever virus

... factor for any future strategies that may involve replacing mosquito populations with their genetically modified counterparts. The results were published this week in the early online edition of the Proceedings of the National Academy of Sciences. "These results are very exciting because they provide us a g...

Sweet 'water taste' paradoxically predicts sweet taste inhibitors

...t the undesirable high sweetness that results from replacing fats with sweet carbohydrates in reduced-fat products such as snack foods and salad dressings. "The extremely close parallels between the behavior of the human sweet taste receptor and the perceptual phenomenon are remarkable," comments Breslin. "T...

CU, USDA team to curb two invasive, poisonous vines

...ers also are finding that pale swallow-wort may be replacing milkweeds in open fields in New York state and across the Northeast coast, within the migratory range of monarch butterflies. The monarchs lay their eggs on milkweed, and their larvae eat it as a primary food. Studies have shown that when the monarch...

Rice bioengineers pioneer techniques for knee repair

...ing replacement cartilage offers the first hope of replacing the entire articular surface of knees damaged by arthritis. The technique, developed at Rice University's Musculoskeletal Bioengineering Laboratory, is described in this month's issue of the journal Tissue Engineering. "This has significant ramifica...

Mouse study reveals human X-SCID gene therapy poses substantial cancer risk

...oods. "These results suggest that curing X-SCID by replacing IL2RG in the manner it is currently being done puts patients at an increased risk of developing cancer." Woods adds that the study could explain why one of three children in the French trial developed T-cell leukemia. Two developed the disease beca...

Scientists look to the Bahamas as a model for coral reef conservation

...nundrum: By messing with the microbes, are we just replacing one disease with another? Falkow's lab has been studying the phenomenon of persistent infection for decades, in particular with H. pylori and Salmonella. He and his colleagues have shown that when infected with these organisms, mice initially show a...

Learning to love bacteria: Stanford scientist highlights bugs' benefits

...nundrum: By messing with the microbes, are we just replacing one disease with another? Falkow's lab has been studying the phenomenon of persistent infection for decades, in particular with H. pylori and Salmonella. He and his colleagues have shown that when infected with these organisms, mice initially show a...

Antibacterial coatings cut infection rates

...ser. Hospitals combat this problem by removing and replacing catheters at frequent intervals, and at considerable cost to the health care system. "Another significant problem caused by bacterial contamination of medical devices is bacteria that settle on contact lenses and cause inflammation and, more rarely,...

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