( iew that with the possible exception of...)A question on study of Adult Stem Cell,Health

iew that with the possible exception of those from the brain, adult stem cells are limited to the tissues from which they arise. Many opponents of the creation of stem cells through the removal of an inner cell mass from a 5-to-7-day-old embryo, which is killed in the process, have pointed to adult stem cell research as a viable, less morally offensive alternative to stem cells extracted from embryos. Still in a blank state, embryonic stem cells can turn into any of the cell types in the body.

This morphing power has inspired visions of stem cells one day being used to grow new heart, liver or brain tissue for people whose own organs are damaged, allowing the body to repair itself. Realization of such potential is many years down the road, if ever, scientists cautioned. "There are those who have been expecting a 'quick fix' with stem cells, and these folks will indeed get somewhat of a reality check from these findings," Dr. Arthur Lander, professor and chairman of developmental and cell biology at the University of California, Irvine, told UPI.

The findings -- in separate studies by Smith and team and Naohiro Terada of the University of Florida in Gainesville -- point to an occurrence the previous experiments failed to expose. Adult cells from either the bone marrow or the brain grown in the same dish as embryonic stem cells joined to make hybrid cells able to produce muscle, nerve and other cell types. Studies will be required to confirm that such spontaneous cell fusion between donor and host cells can also take place in animals.

"We decided to publish our rather disappointing discovery about the fusion of stem cells in order to provide very important caution to all scientists now working in this promising area of research," Terada told UPI. "We want the scientific community to know that it is not just important to determine the fact that certain types of stem cells have successfully turned into other types of stem cells -- as a c
'"/>




Page: 1 2 3
Related medicine news :

1. Use of CT scans to detect lung cancer questioned
2. New study questions consumption of milk for bone growth
3. Terri Schiavo is no more, but the question of Mercy killing is unresolved…
4. New study questions consumption of milk for bone growth
5. The question of who is the actual father
6. Scotland faces shortage of dentists questioning the dental facilities
7. New protein diet program questioned.
8. Glycaemic Index as an index of diet and tool questioned
9. Green tea’s health claims questioned: FD
10. A new study surpasses Gene Therapy Hurdle
11. Marijuana gateway theory strengthened by study of twins