This is not new and it may have been posted before. It seems promising. Any body following up this?
Dramatic Improvement in Parkinson Disease Symptoms Following Intranasal Delivery of Stem Cells to Rat Brains
ScienceDaily (Feb. 9, 2011) — Successful intranasal delivery of stem cells to the brains of rats with Parkinson disease yielded significant improvement in motor function and reversed the dopamine deficiency characteristic of the disease.