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The stem cells that weren't there
05-07-2007 · EurekAlert!Diabetes researchers, investigating how the body supplies itself with insulin, discovered to their surprise that adult stem cells, which they expected to play a crucial role in the process, were nowhere to be found. Many researchers had proposed that adult stem cells develop into insulin-producing cells, called beta cells, in the pancreas. Instead, the beta cells themselves divide, although slowly, to replenish their own population.
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Keywords: stem, cells, weren, cell
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Similar news on "The stem cells that weren't there":
- Discovery of cardiac stem cells may advance regenerative heart therapy
11-22-2006 · EurekAlert!
An immediate early publication of the journal Cell, published by Cell Press, on Nov. 22, 2006, points to the possible existence of master cardiac stem cells with the capacity to produce all three major tissues of the mammalian heart. A companion Cell paper also published online reports the discovery of a second population of cardiac progenitors, which are capable of forming both cardiac muscle and the smooth muscle found in the heart's blood vessel walls.
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- Neural stem cells lend the brain a surprising capacity for self-repair
12-14-2006 · EurekAlert!
The brain contains stem cells with a surprising capacity for repair, researchers report in the Dec. 15 issue of the journal Cell, published by Cell Press. The novel insight into the brain's natural ability to heal might ultimately have clinical implications for the treatment of brain damage, according to the researchers.
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- Loss of stem cells correlates with premature aging in animal study
06-06-2007 · EurekAlert!
Researchers at the Abramson Family Cancer Research Institute of the University of Pennsylvania have found that deleting a gene important in embryo development leads to premature aging and loss of stem cell reservoirs in adult mice. This gene, ATR, is essential for the body's response to damaged DNA, and mutations in proteins in the DNA damage response underlie certain types of cancer and other disorders in humans.
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- A new method of adult stem cell growth efficacious in treatment of disorders of the cornea
07-19-2007 · EurekAlert!
A new method of adult stem cell growth, designed in the Area of Cellular Therapy of the University Clinic (University of Navarra), has demonstrated its efficacy for its capacity to grow cornea stem cells.
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- Scientists find stem cell switch
07-26-2007 · EurekAlert!
Scientists have discovered how plant stem cells in roots detect soil structure and whether it is favourable for growth. Poor soil structure is a problem in tropical agriculture, where soil becomes compact as it dries out. Professor Liam Dolan, of the John Innes Centre in Norwich, UK and his team determined that the plant hormone ethylene regulates cell division in root stem cells.
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- Forsyth scientists gain new understanding of adult stem cell regulation
08-01-2007 · EurekAlert!
Forsyth Institute scientists have discovered an important mechanism for controlling the behavior of adult stem cells. Research with the flatworm, planaria, found a novel role for the proteins involved in cell-to-cell communication. This work has the potential to help scientists understand the nature of the messages that control stem cell regulation -- such as the message that maintain and tells a stem cell to specialize and to become part of an organ (e.g., liver or skin).
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- UCLA scientists produce functioning neurons from human embryonic stem cells
08-07-2007 · EurekAlert!
Scientists with the Institute of Stem Cell Biology and Medicine at UCLA were able to produce from human embryonic stem cells a highly pure, large quantity of functioning neurons that will allow them to create models of and study diseases such as Alzheimer's, Parkinson's, prefrontal dementia and schizophrenia.
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- Stem cells show promise for treating Huntington's disease
09-25-2007 · EurekAlert!
Paying close attention to how a canary learns a new song has helped scientists open a new avenue of research against Huntington's disease -- a fatal disorder for which there is currently no cure or even a treatment to slow the disease. Scientists used gene therapy to guide the development of endogenous stem cells in the brains of mice affected by a form of Huntington’s, generating new medium spiny neurons -- the cell lost in Huntington's disease.
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- Researchers reveal repressor protein blocks neural stem cell development
10-10-2007 · EurekAlert!
A protein known to repress gene transcription at the molecular level in a variety of processes also blocks embryonic neural stem cells from differentiating into neurons, according to a study by University of California, San Diego and Howard Hughes Medical Institute researchers published online Oct. 10 in Nature.
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- 'Mini transplant' patients' outcomes similar using related and unrelated donor cells
12-03-2007 · EurekAlert!
People who undergo nonmyeloablative stem-cell transplants, or 'mini transplants,' for leukemia, lymphoma and other blood cancers have comparable outcomes regardless of whether they receive tissue-matched stem cells from a related or unrelated donor, according to new findings by researchers at Fred Hutchinson Cancer Research Center.
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