Dated November 2010 from the University of Cambridge see

http://www.research-horizons.cam.ac....rward--p-.aspx

"A new multicentre, international research programme – TRANSEURO – aims to refine cell transplantation techniques for replacing the lost cells that lie at the heart of Parkinson’s disease (PD)."

"Repairing the neural circuits has long been an aim of clinical neuroscientists like Dr Roger Barker, who leads the new programme and is based at Cambridge’s Centre for Brain Repair. But neural transplantation in PD has had something of a roller coaster history, as he explains: ‘Close to 100 patients have received cell transplants as part of well-conducted clinical trials worldwide in the past two decades. In some, the transplanted cells survive, grow and significant clinical improvements can be seen for as many as 15 years post-transplant. Yet, in others, the therapy not only fails, but the patient develops side effects.’"

John