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• W2077207851 abstract "Stem cell-based cell replacement of lost midbrain dopamine (mDA) neurons is a potential therapy for Parkinson's disease (PD). Toward this goal, it is critical to optimize various aspects of cell transplantation and to assess functional recovery through behavioral tests in validated animal model(s) of PD. At present, cell transplantation studies are being done almost exclusively in neurotoxin-based animal models, because few genetic models of PD exhibit robust mDA neuronal loss. Here we used a genetic model of PD, the aphakia mouse, which demonstrates selective degeneration of mDA neurons in the substantia nigra. We systematically investigated the functional effects of transplanting embryonic stem cell-derived cells at different stages of in vitro differentiation: embryoid body (EB), neural progenitor (NP), and neuronal differentiated (ND) stages. We found that transplantation of NP cells yielded the best outcomes for both survival and behavioral improvement, while transplantation of EB and ND cells resulted in high teratoma-like tumor formation and poor survival, respectively. In behavioral paradigms specific to basal ganglia, the NP cells group prominently improved motor behavioral defects 1 and 2 months posttransplantation. Furthermore, we found that NP cell transplantation also improved cognitive impairments of aphakia mice, as examined by the passive avoidance task. Importantly, these graft-induced functional improvements well correlated with survival of tyrosine hydroxylase-positive DA neurons. Taken together, we propose that the aphakia mouse can serve as a novel and useful platform for cell transplantation studies to assess both neurological and cognitive improvements and that NP stage cells represent an optimal stage for transplantation." @default.
• W2077207851 created "2016-06-24" @default.
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• W2077207851 date "2013-07-01" @default.
• W2077207851 modified "2023-09-26" @default.
• W2077207851 title "Stem Cell Grafting Improves Both Motor and Cognitive Impairments in a Genetic Model of Parkinson's Disease, the Aphakia (<i>ak</i>) Mouse" @default.
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• W2077207851 doi "https://doi.org/10.3727/096368912x657242" @default.
• W2077207851 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3752607" @default.
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