Abstract:
:Transplantation of dopaminergic neurons derived from fetal or adrenal tissue into the striatum is a potentially useful treatment for Parkinson's disease (PD). Although initially promising, recent clinical studies using adrenal autografts have demonstrated limited efficacy. The use of human fetal cells, despite promising preliminary results, is complicated by tissue availability and ethical concerns. An attractive alternative is based on encapsulating dopamine-producing cells into polymer capsules prior to transplantation. Polymer capsules can be fabricated to surround the cells with a semi-permeable and immunoprotective barrier. The semi-permeable membrane allows nutrients to enter the capsule, so the encapsulated cells will survive and function, and dopamine and other low molecular weight constituents to diffuse out into the host tissue. Thus, the technique allows use of unmatched human tissue (allografts), or even animal tissue (xenografts) without immunosuppression of the recipient. Cell-loaded polymer capsules can also be retrieved if necessary or desired. The demonstration that striatal implants of encapsulated dopamine-producing cells promote behavioral recovery in rodent and primate models of PD further suggests that cellular encapsulation may be a useful strategy for ameliorating the behavioral consequences of PD.
journal_name
Neurosci Biobehav Revjournal_title
Neuroscience and biobehavioral reviewsauthors
Emerich DF,Winn SR,Christenson L,Palmatier MA,Gentile FT,Sanberg PRdoi
10.1016/s0149-7634(05)80185-xsubject
Has Abstractpub_date
1992-01-01 00:00:00pages
437-47issue
4eissn
0149-7634issn
1873-7528journal_volume
16pub_type
杂志文章,评审abstract::Preclinical models of behavioral and toxic effects of cocaine are reviewed and their potential for predicting compounds with efficacy and safety in the medical management of cocaine abuse and toxicity is assessed. Many of the existing models appear to be good predictors of the effects of compounds against specific beh...
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journal_title:Neuroscience and biobehavioral reviews
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journal_title:Neuroscience and biobehavioral reviews
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更新日期:1983-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:1991-04-01 00:00:00
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journal_title:Neuroscience and biobehavioral reviews
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journal_title:Neuroscience and biobehavioral reviews
pub_type: 杂志文章,评审
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journal_title:Neuroscience and biobehavioral reviews
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更新日期:2006-01-01 00:00:00
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journal_title:Neuroscience and biobehavioral reviews
pub_type: 杂志文章
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更新日期:2000-01-01 00:00:00