Stem cell therapy has been held as a promising avenue to restore tissues lost to chronic diseases of aging, including those of the brain. However, despite reports using animal models, no therapeutic advance associated with neural stem cells has reached the clinic, since no advance has been reproducible or effective. However, many think that the only obstruction to our ability to cure diseases such as Alzheimer's and Parkinson's result not from failure of stem cell therapy but from regulatory impasse.

doi : 10.5214/ans.0972.7531.2010.170101