Journal
BRAIN RESEARCH BULLETIN
Volume 66, Issue 2, Pages 135-142Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.brainresbull.2005.04.009
Keywords
dopamine; xenotransplantation; GDNF; neurotrophic factor; polymer
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We investigated whether a continuous supply of glial cell line-derived neurotrophic factor (GDNF) via encapsulated genetically modified cells can promote survival and fiber outgrowth from xenotransplanted human dopaminergic neurons. Cells genetically engineered to continuously secrete GDNF were confined in hollow fiber-based macrocapsules. Each hemiparkinsonian rat received either a single C2C12-hGDNF capsule (n = 8) or a C2C12-control capsule (n = 8) concomitantly with human embryonic ventral mesencephalic cell suspension transplants. Our results show that fiber outgrowth in the area between the capsule and the graft is more extensive in rats with GDNF-releasing capsules than in rats with control capsules. We suggest that continuous and safe delivery of GDNF to the brain could be a potential way to optimize neural transplantation as a therapy for Parkinson's disease. (c) 2005 Elsevier Inc. All rights reserved.
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