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New study shows that fetal cells to treat Parkinson's disease may not function long term
Date:4/6/2008

Neurons grafted into the brain of a patient with Parkinsons disease fourteen years ago have developed Lewy body pathology, the defining pathology for the disease, according to research by Jeffrey H. Kordower, PhD, and associates and published in the April 6 issue of Nature Medicine.

The finding suggest that Parkinsons disease is an ongoing process that can affect cells grafted into the brain in the same way the disease affects host dopamine neurons in the substantia nigra of the brain, according to Kordower, who is the lead author of the study and a neuroscientist at Rush University Medical Center.

These findings give us a bit of pause for the value of cell replacement strategy for Parkinsons disease, said Kordower. We still need to vigorously investigate this approach among the full armament of surgically-delivered Parkinsons disease therapies. While it is not clear to us whether the same fate would befall stem cell grafts, the next generation of cell replacement procedures, this study does suggest that grafted cells can be affected by the disease process.

The collaborative research study described in the article involves Rush, Mt. Sinai School of Medicine, New York, and the University of South Florida, Tampa, In it, individuals with Parkinsons disease received fetal cell transplants to reverse the loss in the brain of striatal dopamine.

The individual described in this article was a woman with a 22-year history of Parkinsons disease who underwent transplantation in 1993. After transplantation she experienced improvements in disease symptoms as measured by the Unified Parkinson Disease Rating Scale (UPDRS) and required substantially lower doses of antiparkinsonian medications. Her UPDRS scores remained improved into1997, but by 2004, she experienced progressive worsening of Parkinsons disease symptoms. She died in 2007 and her brain and that of two other patients in the study were comprehensively processed and analyzed. She h
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Contact: Mary Ann Schultz
mary_ann_schultz@rush.edu
312-942-7816
Rush University Medical Center
Source:Eurekalert

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