Linked Life Data

9305812

Source:http://linkedlifedata.com/resource/pubmed/id/9305812

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pubmed-article:9305812pubmed:abstractTextOne approach to replace lost dopaminergic neurons in Parkinson's disease is to transplant fetal mesencephalic tissue into the striatum. In an attempt to expand the developmental window useful for grafting of mesencephalic tissue and increase the fiber outgrowth from grafted dopaminergic neurons, we have pretreated fetal mesencephalic tissue with the dopaminotrophic factor glial cell line-derived neurotrophic factor (GDNF). Mesencephalic tissue pieces from embryonic day 18-19 Fischer 344 rats were preincubated for 20 min with GDNF (1 microg/microl) or vehicle. Two tissue pieces were then transplanted into the striatum of rats that had been unilaterally lesioned by medial forebrain bundle injections of 6-hydroxydopamine. The animals were tested for apomorphine-induced rotations prior to intracranial grafting. Host rats received intrastriatal injections of 10 microg GDNF or control solution at 10 days and 4 weeks postgrafting. The animals were tested in the rotometer twice monthly following transplantation. Despite the fact that these transplants were from a suboptimal donor stage, the rotations were significantly decreased in both transplanted groups. Immunohistochemical evaluation of the host brains revealed that the overall size of transplanted mesencephalic tissue was significantly increased in the GDNF-treated animals, and that the average size of transplanted tyrosine hydroxylase (TH)-positive neurons was also increased. Furthermore, we found that the innervation density of surrounding host striatal tissue was significantly increased in the GDNF-treated group, as compared with controls. Taken together, these results suggest that treatment of intrastriatal ventral mesencephalon grafts with GDNF can optimize the conditions for intracranial grafting and thus improve the chances for functional recovery following the intrastriatal grafting procedure.lld:pubmed
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pubmed-article:9305812pubmed:dateRevised2009-11-11lld:pubmed
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pubmed-article:9305812pubmed:articleTitleGlial cell line-derived neurotrophic factor improves survival of ventral mesencephalic grafts to the 6-hydroxydopamine lesioned striatum.lld:pubmed
pubmed-article:9305812pubmed:affiliationDepartment of Basic Science, University of Colorado Health Sciences Center, Denver 80262, USA.lld:pubmed
pubmed-article:9305812pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:9305812pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:9305812pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed
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