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Tag: "replacing" at biology news

OHSU discovery sheds light into how stem cells become brain cells

...r conditions or diseases that might be combated by replacing lost or damaged brain cells. The research is published in the current online edition of the medical journal Developmental Biology. "In the early stages of brain development prior to birth, brain stem cells, also known as neural stem cells, will diff...

Implantable pumps extend lives of patients too sick for transplant

.... Durability will also be an issue, he said, since replacing an LVAD entails just as substantial and involved a surgical procedure as the initial placement. Duke is currently participating in a number of different trials testing different device models and pumps designs. ...

Scientists use stem cells to grow cartilage

...not possible to replace the worn out cartilage. By replacing the cartilage it may be possible to avoid the need for a joint replacement for some time." The research involved growing human embryonic stem cells with chondrocytes or cartilage cells, in Petri dishes in the laboratory in a specialised system that ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...s dominated by easy and ill-considered options for replacing lost boats and gear. "It would be a dangerous over-simplification, for example, to argue that with the death of such a high proportion of fishers, providing boats and gear to those that remain presents no risk to the sustainability of stocks or to t...

Regenerating worms help elucidate stem cell biology

... body does not face such demands, it is constantly replacing lost cells. For example, blood replenishes itself,...n a healthy worm, as they are also responsible for replacing tissue that has been lost naturally. Scientists are just beginning to explore the molecular mechanis...

Chernobyl: The true scale of the accident

... foster "dependency" and a "victim" mentality, and replacing them with initiatives that encourage opportunity, support local development, and give people confidence in their futures. In the health area, the Forum report calls for continued close monitoring of workers who recovered from Acute Radiation Syndrom...

Biotechnology's newest chemical tool

...ethyl group would not be possible, in part because replacing AdoMet's methyl group lowered the chemical reactivity of the compound. To overcome this problem, the authors took some tips from organic chemistry textbooks and stabilized the transfer with a multiple carbon bond. "It turned out that our first bet,...

The right drug at the right time

... at Rice University have developed a new method of replacing the pricey solvents used in quantum dot synthesis ...Later, other scientists introduced a new recipe by replacing TOPO with a mixture of ODE and oleic acid. Wong said the CBEN research team, which included CBEN Di...

Method slashes quantum dot costs by 80 percent

... at Rice University have developed a new method of replacing the pricey solvents used in quantum dot synthesis ...Later, other scientists introduced a new recipe by replacing TOPO with a mixture of ODE and oleic acid. Wong said the CBEN research team, which included CBEN Di...

Research casts doubt on circulating stem cells

...pair cells, constantly moving through the body and replacing damaged tissue. Even severe diseases like Duchenne muscular dystrophy (DMD), which destroys all the body's muscles, appeared to be potentially treatable ?indeed, by the simple means of transplanting healthy bone marrow. For boys, DMD is the second mo...

Researchers report breakthrough against world’s deadliest viruses

...how Canadian researchers developed the vaccines by replacing a surface protein in an animal pathogen, called vesicular stomatitis virus, with a surface protein from either the Ebola or Marburg viruses. Following extensive work, including trials with mice and guinea pigs, the PHAC researchers collaborated with ...

No small feat: First ever gene therapy success for muscular dystrophy achieved

... muscle cells become vulnerable to damage. Simply replacing the defective gene with a good laminin alpha-2 gene is not possible because its size makes it impossible for researchers to get it to squeeze inside viral vectors ?disarmed viruses that are used to shuttle genes into cells. But the team found a good ...

Elderly mice yield clues to the process of growing old

...cells from some tissues and that are essential for replacing cells that die. "If these stem cells are lost, tissue structure and the ability of tissue to regenerate are impaired," Prolla explains. "We have observed that in tissues like bone marrow, intestine and hair follicles." The altered mice used in the s...

Six previously blind patients detect light, motion, identify objects with retinal prostheses

...lar retinal prosthesis is taking the first step to replacing those cells with its device, a 4-by-4 grid of platinum electrodes embedded in silicone rubber. The electrodes are wirelessly stimulated through an external controller hooked up to a head-mounted video camera. This study is being conducted under a Fo...

Scientists discover global pattern of big fish diversity in open oceans

...ow that there has been a big shift already ?we are replacing big tuna and billfish with things like snake mackerel and pelagic stingrays. This is a fundamental change in the world's oceans." To understand what creates these patterns of diversity, the scientists collaborated with oceanographers to examine diff...

Natural Killers Could Lead to New Hepatitis Treatments

...ith a fluorescent marker. This was accomplished by replacing the gene encoding a characteristic NKT cell surface receptor called CXCR6 with the gene for green fluorescent protein. Although the CXCR6 receptor is known to be central to the function of NKT cells, its overall role was not known, said Littman. Wor...

Gene keeps neural cells on correct developmental path

...at understanding repairing spinal cord injuries or replacing malfunctioning brain cells in neurodegenerative diseases. It may also provide insights into other diseases, such as small cell lung cancer, which mistakenly make neuronal proteins, or neurological syndromes, where neuronal proteins produced by cancer...

Gene therapy promising for growing tooth-supporting bone

...herapy. In a patient with a sizeable mouth wound, replacing a tooth takes more than simply implanting a new one---the patient also needs the bone structure to anchor the new tooth in place. Such reconstructive surgery today involves either taking a bone graft from the patient's chin or jaw, which leaves a sec...

Ophthalmologists implant five patients with artificial silicon retina microchip

...ally stimulates the retina seems a logical step in replacing the loss of photoreceptor cells of the retina. If the implant is tolerated well and is able to successfully stimulate the retina, it may open up new opportunities for restoring sight in patients with the end stages of retinitis pigmentosa." ...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...ally stimulates the retina seems a logical step in replacing the loss of photoreceptor cells of the retina. If the implant is tolerated well and is able to successfully stimulate the retina, it may open up new opportunities for restoring sight in patients with the end stages of retinitis pigmentosa." ...

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