February 13, 2012 |
Researchers have used cardiac stem cells to regenerate heart muscle in patients who have suffered heart attacks, also known as myocardial infarction. The small preliminary study, which was conducted by the Cedars-Sinai Heart Institute in Los Angeles, involved 25 patients who had suffered heart attacks in the previous one and a half to three months. Seventeen of the study subjects received infusions of stem cells cultured from a raisin-sized chunk of their own heart tissue, which had been removed via catheter.
July 15, 2010 |
In addition to doling out roughly $3 billion in stem cell research money, the California Institute for Regenerative Medicine also holds a poetry contest. The contest was initiated last year to celebrate Stem Cell Awareness Day (also known as Sept. 23). The theme, "What stem cell research means to me," was broad enough to include entries from scientists, patients who could potentially be treated with stem cells, or anyone else who supports the research. There were enough entries to warrant two first-place awards.
October 4, 2012 |
In a long-sought achievement, Japanese researchers have demonstrated in mice that both eggs and sperm can be grown from stem cells and combined to produce healthy offspring, pointing the way to a new avenue for fertility treatments. If the milestone accomplishment can be repeated in humans -- and experts said they are optimistic that such efforts will ultimately succeed -- the technique could make it easier for women in their 30s or 40s to become mothers. It could also help men and women whose reproductive organs have been damaged by cancer treatments or other causes.
February 7, 2011 |
It's one of the most vexing problems in medical science: How can you mend a broken heart? A decade ago, researchers and cardiologists thought they had found an answer in stem cells. These powerful cells lurk throughout the body, repairing and maintaining tissues as needed. In the laboratory, scientists can transform them into heart cells. When implanted in animals, they grow into new heart tissue too. So it was with high hopes that researchers transfused stem cells into patients suffering from heart failure — people whose hearts, weakened by heart attacks or other conditions, no longer pumped enough blood through their bodies.
November 6, 2012 |
Stem cell therapy may help repair the hearts of patients who have suffered heart attacks, and, according to a new study published Monday in the Journal of the American Medical Assn., it may not matter whether those stem cells come from the patient or a donor. For decades, common belief was that areas of the heart severely damaged by a heart attack could not be repaired. But the development of advanced cell therapies, in which stem cells or other cell types are injected into the damaged area, have provided new hope that interventions may be possible.
December 19, 2013 |
Scientists say they have discovered a key process by which the AIDS virus kills key immune cells: It triggers a preprogrammed self-destruct sequence within the cell that is intended to alert fellow immune cells of a crisis. In papers published simultaneously Thursday in Science and Nature , researchers at the Gladstone Institutes and UC San Francisco wrote that they had not only discovered this little-understood process, but had also identified an existing drug that may halt it. "Our studies have investigated and identified the root cause of AIDS," said Gilad Doitsh, a coauthor of both studies and a Gladstone virologist.
November 12, 2010 |
A specific type of stem cells transplanted into the leg muscles of injured young mice not only repaired the muscle damage but triggered changes in the muscle tissue that made it resistant to normal aging. The surprising finding, which was published Wednesday in Science Translational Medicine suggests that, under the proper conditions, stem cells might regenerate muscle tissue. Researchers led by Bradley Olwin of the University of Colorado, Boulder, took stem cells from the muscles of young donor mice and transplanted them into mice with muscle injuries.
November 2, 2011 |
Sweeping away so-called senescent cells -- aging cells that have stopped dividing -- can slow aging-related ailments, including cataracts and muscle loss, in mice, researchers at the Mayo Clinic in Rochester, Minn., said. According to the scientists' study, which was published online Wednesday in the journal Nature, the role of senescent cells in aging-related disorders is not well understood. Senescence has a purpose: It slows the proliferation of damaged cells in the body, and thus plays a role in halting the growth of cancers.
June 8, 2011 |
Scientists at University College London have been able to coax cells in the hearts of adult mice to grow new, beating heart tissue. The work, described Wednesday in the journal Nature, is part of a body of research that fuels hopes that someday scientists will figure out a way to stimulate stem-like cells in adult human hearts to mend the damage caused by heart attacks. Cracking that nut is one of the foremost challenges in cardiology. About...
August 19, 2011 |
Like most card-carrying conservatives, Texas Gov. Rick Perry opposes research on embryonic pluripotent stem cells. But the presidential candidate apparently has a very open mind toward therapies developed using adult stem cells, which can be collected from a patient's own body. So open, in fact, that on July 1 he apparently received experimental stem cell surgery on his own back. In the procedure, doctors removed some of Perry's fat cells,...