Washington: Cells taken from men's testicles seem as versatile as the stem cells derived from embryos, researchers reported in what may be yet another new approach in a burgeoning scientific field.
The new type of stem cells could be useful for growing personalised replacement tissues, according to a study in yesterday's issue of the journal Nature. But because of their source, their highest promise would apply to only half the world's population: men.
Embryonic stem cells can give rise to virtually any tissue in the body and scientists believe they may offer treatments for diseases like Parkinson's and diabetes, and for spinal cord injuries.
The testicular cells avoid the ethical dilemma of embryonic stem cells, which are harvested in a process that destroys the embryos. For that reason, some people, including President George W. Bush, oppose their use on ethical or religious grounds.
'The advantage these cells have, in comparison to embryonic stem cells, is that there is no ethical problem with these cells and that they are natural,' said study lead author Thomas Skutella, a professor at the Center for Regenerative Biology and Medicine in Tuebingen, Germany.
The new study used cells taken from biopsied tissue from 22 different men undergoing various medical treatments. The men ranged in age from 17 to 81. Researchers found that after a few weeks of growth, the cells could differentiate into various types of cells just like those taken from embryos.
Using the new findings to treat patients could take years.
- Associated Press
Note: Stem cells is seen as one of the most exciting ways forward in the search for treatment for macular degeneration.
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