title: Implantation of Spheramine in advanced Parkinson's disease (PD).
abstract: Evaluation of the safety and efficacy of unilateral stereotactic implantation of cultured human retinal pigment epithelial (hRPE) cells attached to microcarriers (Spheramine) in patients with advanced PD in an open label pilot study. Six patients with advanced PD (3 males; 3 females; mean age 52.2 years; mean duration of PD 10.2 years; mean Hoehn and Yahr stage "off" 3.75) were assessed at baseline and post-operatively using the modified CAPIT. Each patient underwent MRI-guided stereotactic transplantation of 325,000 hRPE cells attached to microcarriers in 5 tracts, 5 mm apart in the post-commissural putamen contralateral to the most affected side. Immunosuppression was not used. The UPDRS Motor (UPDR-M) score in the practically defined "off" state was the primary outcome measure. At 6 months post-op, the mean UPDRS-M (off) score improved to 35 (34%) from a pre-op baseline mean of 52 (p <.001). Secondary outcome measures improved including the total UPDRS (33%), Timed Motor Tests (on, 14%; off, 23%), PDQ39 QOL (30%), and Schwab and England score (on, 11%; off, 30%). Bilateral improvements have been observed in motor symptoms, with the greatest effect seen contralateral to the implants. Three of six patients currently have lower Dyskinesia Rating Scale scores than at baseline, while the scores of the other three are unchanged from baseline values. No "off-state" dyskinesias have been observed. Thus Spheramine implantation therapy appears to be safe and well tolerated for 6 months post-implantation.
authors.affiliation: Department of Neurosurgery, Rush Presbyterian-St. Luke's Medical Center, Chicago, IL 60611, USA. rbakay@cinn.org
authors.forename: Roy A E
authors.initials: RA
authors.lastname: Bakay
authors.forename: Cathy D
authors.initials: CD
authors.lastname: Raiser
authors.forename: Natividad P
authors.initials: NP
authors.lastname: Stover
authors.forename: Thyagarajan
authors.initials: T
authors.lastname: Subramanian
authors.forename: Michael L
authors.initials: ML
authors.lastname: Cornfeldt
authors.forename: Alfred W
authors.initials: AW
authors.lastname: Schweikert
authors.forename: Richard C
authors.initials: RC
authors.lastname: Allen
authors.forename: Ray
authors.initials: R
authors.lastname: Watts
mesh_terms: D017690:Cell Transplantation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008863:Microspheres; D008875:Middle Aged; D010300:Parkinson Disease / Q000628:therapy*; D010857:Pigment Epithelium of Eye / Q000637:transplantation*; D010865:Pilot Projects; D012720:Severity of Illness Index; D016896:Treatment Outcome