Medical Scientists Prove Heart Disease Can be Reversed Natural News.com, AZ - The discovery was made by a team studying "microRNA," fragments of genetic material that degrade the function of heart cells and are almost always present ...
In space, a cluster of health dangers Philadelphia Inquirer, PA - Nov 30, 2008 Even going that far can put astronauts at an elevated risk of cataracts, bone loss, and possibly heart problems. A Mars mission would take at least six ...
Stem-cell science moves forward Minneapolis Star Tribune, MN - The bronchial samples consisted mainly of what are known as epithelial cells, and with these it was just a question of multiplying their numbers. The bone...
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Hayward boy gives thanks for bone marrow transplant Daily Review Online, CA - Nov 27, 2008 "Marrow is the same way, except it's in every bone. We can't physically take it out, so we use chemo to destroy his own cells." That makes room for the new ...
Research facility's head, team focusing on stem cells Killeen Daily Herald, TX - Nov 30, 2008 Adult stem cells come from the patient or a normal volunteer. A small sample of bone marrow is extracted and millions of stem cells are reproduced in a lab. ...
The root, or stem, of the issue The University of Alabama Crimson White, AL - Because the trachea was created using her stem cells, the woman?s immune system didn?t reject it as a foreign object. Stem cells are also used in bone...
Recent News and Articles on the Keywords: cells + heart + marrow Related to the article below (Last Update: 8/7/2008)
Heal Yourself With Stem Cells WFtv.com, FL - Adult stem cells have less ability than embryonic stem cells to develop into other types of cells and they are found in bone marrow and a few organs. ...
Are stem cells in the heart evolutionary leftovers or clues to ... Sydney Morning Herald, Australia - Jul 23, 2008 Such cells within the heart might not be enough for replenishment, she says, giving rise to research into whether stem cells taken from bone marrow or ...
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Craig W. Philips Takes Helm at CTI FOXBusiness - Aug 5, 2008 The risk of hematologic toxicity correlated with the degree of bone marrow involvement prior to Zevalin therapy. Myelodysplasia or acute myelogenous ...CTIC - OTC:CMTX
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Bone marrow cells can be used to repair a heart damaged by a heart attack, according to U.S. researchers.
The cells, genetically engineered to make them stronger and more likely to survive, restored the heart’s pumping capacity by 80 percent to 90 percent in animal models in rats, the team at Brigham and Women’s Hospital in Boston said.
Writing in the September issue of the journal Nature Medicine, they said they hoped their experiments will someday lead to a treatment for human patients whose hearts are irreparably damaged by heart attacks. "This is a very positive development that we think holds immense promise," Dr. Victor Dzau, who led the study, said. "But there is certainly more work to do."
His team used bone marrow cells called mesenchymal stem cells. These cells are already used to repair cartilage and bone defects.
They should, in theory, be able to generate new heart tissue but experiments in pigs have failed so far because the cells die. So the team added a gene called Akt1, which can prevent transplanted cells from dying.
It worked. "The results were truly remarkable," Dzau said in a statement. "The hearts that received the stem cells modified with Akt1 exhibited an amazing amount of reparative growth, significantly, if not completely, restoring cardiac function."
When injected into the hearts or rats given artificial heart attacks, the stem cells hooked up with the heart cells and generated more heart-like cells, the team reported.
"The hope is this sort of process can be turned into a gene therapy for humans," added Dr. Abeel Mangi, formerly of Brigham and Women’s and now at Massachusetts General Hospital.
