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Medical News & Perspectives
July 11, 2007

Stem Cells Ease Parkinson Symptoms in Monkeys

JAMA. 2007;298(2):165. doi:10.1001/jama.298.2.165

Brain implants of human neural stem cells can ease the Parkinson symptoms in primates with a chemically induced form of the disease, according to new research (Redmond DE et al. Proc Natl Acad Sci USA. doi: 10.1073/pnas.0704091104; published online ahead of print June 11, 2007).

Prior to implantation, African green monkeys with Parkinson disease had difficulty walking, moving, and eating, and they experienced head and limb tremors. But 2 months after receiving injections of neural stem cells from a human fetal cadaver, the animals improved progressively compared with sham-injected controls.