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Tag: "regenerate" at biology news

Spleen may be source of versatile stem cells

...n might be a source of adult stem cells that could regenerate the insulin-producing islets of thepancreas. In a follow-up to that unexpected finding, members of thesame team now report that these potential adult stem cells produce aprotein previously believed to be present only during the embryonicdevelopment o...

Researchers discover way to make cells in the eye sensitive to light

..., melanopsin uses light at different wavelengthsto regenerate itself. In some forms of hereditary blindnessphotoreceptors are lost entirely, but the retinal ganglion cells, thecells which signal to the brain, remain intact. The researchers believethat by activating the melanopsin, these cells may gain the abili...

Zebrafish may hold key to understanding human nerve cell development

...rve cells develop and whether it may be possibleto regenerate these types of cells in humans one day," said TatjanaPiotrowski, Ph.D., assistant professor of neurobiology and anatomy atthe University of Utah School of Medicine. Scientistslong have known that glial cells, or simply glia, are essential forhealthy...

Harmful Bacterium Commonly Found in Poultry May Survive Refrigeration and Frozen Storage Combined

...rve cells develop and whether it may be possibleto regenerate these types of cells in humans one day," said TatjanaPiotrowski, Ph.D., assistant professor of neurobiology and anatomy atthe University of Utah School of Medicine. Scientistslong have known that glial cells, or simply glia, are essential forhealthy...

GenMAPP 2.0 released

...rve cells develop and whether it may be possibleto regenerate these types of cells in humans one day," said TatjanaPiotrowski, Ph.D., assistant professor of neurobiology and anatomy atthe University of Utah School of Medicine. Scientistslong have known that glial cells, or simply glia, are essential forhealthy...

NJIT Presidential Award winner takes stem cell research another step

...bination with allografts ?donated bone tissue - to regenerate and repair the patients' damaged bones. She is per...cted into a diseased area of the human body, could regenerate damaged tissue. Her research has also led to two major stem-cell discoveries: One showing that stem...

Single stem cells from bone heal a broken heart

...ults from the limited ability of the myocardium to regenerate and self-repair. Douglas Losordo and colleagues fr...ovel multipotent stem cells from human bone marrow regenerate myocardium after myocardial infarction, JCI ...

Cerebral navigation: How do nerve fibers know what direction to grow in?

...ntervention could possibly enable damaged axons to regenerate (normally impossible in a mature nervous system) and ultimately restore nerve function. It's been known that cells synthesize an inhibitory protein called ephrin, which binds to a receptor called Eph on the axon's growth cone. But how this triggers ...

Master gene controls healing of skin in fruit flies and mammals

...cle of a fly embryo. These wound repair genes then regenerate the injured patch of cuticle. In a separate study published in the same issue of Science, a team of researchers led by Stephen Jane at the Royal Melbourne Hospital in Melbourne, Australia report that, although insect cuticle and the outer layer of m...

Making Sure Sacred Sheep Don't Become Extinct

...c diversity. If there were ever a need to totally regenerate the Navajo-Churro breed from the ARS collection, a backcrossing strategy could be used. In such a situation, Churro semen would be used to inseminate a ewe from a different sheep breed. The resulting offspring would be 50 percent Churro. The process ...

Young Blood Revives Aging Muscles, Stanford Researchers Find

...ounger lab-mates. The cells that help liver tissue regenerate are less active in older animals, but again the cells responded more robustly when the livers in older mice were bathed in the younger blood. Clearly, something in the youthful blood revived the regenerative cells in muscle and liver. "We need to co...

Researchers feed tiny pills of RNA to planarians to identify genes essential for regeneration

... in half, and two new worms grow. Their ability to regenerate is so prolific that a tissue fragment only 1/279th of the worm's length can grow into a new planarian. Researchers know that planarian stem cells, called neoblasts, play a central role in both regeneration and homeostasis. But how they do that has re...

Most common lung cancers may begin in newly discovered cells

...t group of cells known as "cancer stem cells" that regenerate the tumor, a capacity that most cells in a tumor lack. "They may be the cells that we have to eliminate in cancer in order to obtain durable cures for the disease," said Jacks. "Along the way, we need to know how these cancer stem cells become diffe...

New research could help us deliver genes for new bone formation

UK scientists are working on new methods to regenerate cartilage and bone by delivering genes to stem cells within the body to instruct them to turn into bone cells. The research, funded by the Biotechnology and Biological Sciences Research Council (BBSRC), could lead to a new approach to tissue engineer...

For first time, brain cells generated in a dish

... disease and others of that nature, the ability to regenerate the needed cell type and placing it in the correct spot would have major impact," said Dr. Eric Holland, a neurosurgeon at Memorial Sloan-Kettering Cancer Center in New York who specializes in the treatment of brain tumors, but who is not connected t...

Elderly mice yield clues to the process of growing old

...ost, 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 study were created by manipulating mouse embryonic stem cells to produce mice with the defective DNA proo...

Nanotubes inspire new technique for healing broken bones

... material. Grafts provide a framework for bones to regenerate and heal, allowing bone cells to weave into the porous structure of the implant, which supports the new tissue as it grows to connect fractured bone segments. The new technique may someday give doctors the ability to inject a solution of nanotubes i...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

...ells with the same potential to treat diseases and regenerate tissues as their more controversial counterparts, embryonic stem cells, suggests a University of Pittsburgh study to be published in the journal Stem Cells and available now as an early online publication in Stem Cells Express. A part of the placent...

Regenerating worms help elucidate stem cell biology

...atworm best known for its extraordinary ability to regenerate lost tissue, researchers have identified a gene th... -- head regression, curling, and the inability to regenerate -- suggesting that the gene was needed for normal neoblast function. The researchers examined p...

Embryonic stem cells accrue genetic changes

... pancreas cells in people with type I diabetes, or regenerate brain cells lost in a person with Parkinson's disease, for example. The analyses of the embryonic stem cell lines and the computer comparisons of the mounds of resulting data required the efforts of scientists at four academic centers, two federal ...

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