Independent findings from 2 teams of scientists in Europe and North America suggest that using cell transplants to compensate for the destruction of dopamine-producing neurons in patients with Parkinson disease may be compromised because the disease is an ongoing process that can also affect the transplanted cells (Kordower JH et al. Nat Med. 10.1038/nm1747; Li J-Y et al. Nat Med. 10.1038/nm1746 [both published online ahead of print April 6, 2008]).
Stephenson J. Parkinson Disease. JAMA. 2008;299(19):2267. doi:10.1001/jama.299.19.2267-c