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Graft placement and uneven pattern of reinnervation in the striatum is important for development of graft-induced dyskinesia.

Carlsson, Thomas LU ; Winkler, Christian LU ; Lundblad, Martin LU ; Cenci Nilsson, Angela LU ; Björklund, Anders LU and Kirik, Deniz LU (2006) In Neurobiology of Disease 21(3). p.657-668
Abstract
In two recent double-blind clinical trials of fetal ventral mesencephalic cell transplants into the striatum in patients with Parkinson's disease (PD), a significant proportion of the grafted patients developed dyskinetic side effects, which were not seen in the sham operated patients. Comparison between dyskinetic and non-dyskinetic grafted patients in one of the trials suggested that an uneven pattern of striatal reinnervation might be the leading cause of the dyskinesias. Here, we studied the importance of graft placement for the development of dyskinesias in parkinsonian rats. Abnormal involuntary movements resembling peak-dose dyskinesias seen in PD patients were induced by daily injections of L-DOPA for 6 weeks. The dyskinetic... (More)
In two recent double-blind clinical trials of fetal ventral mesencephalic cell transplants into the striatum in patients with Parkinson's disease (PD), a significant proportion of the grafted patients developed dyskinetic side effects, which were not seen in the sham operated patients. Comparison between dyskinetic and non-dyskinetic grafted patients in one of the trials suggested that an uneven pattern of striatal reinnervation might be the leading cause of the dyskinesias. Here, we studied the importance of graft placement for the development of dyskinesias in parkinsonian rats. Abnormal involuntary movements resembling peak-dose dyskinesias seen in PD patients were induced by daily injections of L-DOPA for 6 weeks. The dyskinetic animals received about 130.000 fetal ventral mesencephalic cells as single grafts placement in the rostral or the caudal aspect of the head of striatum. The results show that grafts placed in the caudal, but not the rostral, part are effective in reducing the L-DOPA-induced limb and orolingual dyskinesia, predominantly seen as hyperkinesia. The same grafts, however, also induced a new type of dyskinetic behavior after activation with amphetamine, which were not seen in non-grafted lesion controls. The severity of these abnormal involuntary movements was significantly correlated with a higher graft-derived dopaminergic reinnervation in the caudal aspect of the head of striatum relative to the rostral part. The results indicate that graft-induced dyskinesias in PD patients may be linked to single, small graft deposits that provide an uneven, patchy reinnervation of the putamen. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ventral mesenchephalon, Cell transplantation, Dyskinesia, l-DOPA, Parkinson's disease, Motor behavior
in
Neurobiology of Disease
volume
21
issue
3
pages
657 - 668
publisher
Elsevier
external identifiers
  • pmid:16256359
  • wos:000235899100021
  • scopus:33244459813
ISSN
0969-9961
DOI
10.1016/j.nbd.2005.09.008
language
English
LU publication?
yes
id
f018c891-d796-40e4-b7a3-67318de357d6 (old id 148277)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=16256359&dopt=Abstract
date added to LUP
2007-07-11 09:53:49
date last changed
2019-05-07 01:24:46
@article{f018c891-d796-40e4-b7a3-67318de357d6,
  abstract     = {In two recent double-blind clinical trials of fetal ventral mesencephalic cell transplants into the striatum in patients with Parkinson's disease (PD), a significant proportion of the grafted patients developed dyskinetic side effects, which were not seen in the sham operated patients. Comparison between dyskinetic and non-dyskinetic grafted patients in one of the trials suggested that an uneven pattern of striatal reinnervation might be the leading cause of the dyskinesias. Here, we studied the importance of graft placement for the development of dyskinesias in parkinsonian rats. Abnormal involuntary movements resembling peak-dose dyskinesias seen in PD patients were induced by daily injections of L-DOPA for 6 weeks. The dyskinetic animals received about 130.000 fetal ventral mesencephalic cells as single grafts placement in the rostral or the caudal aspect of the head of striatum. The results show that grafts placed in the caudal, but not the rostral, part are effective in reducing the L-DOPA-induced limb and orolingual dyskinesia, predominantly seen as hyperkinesia. The same grafts, however, also induced a new type of dyskinetic behavior after activation with amphetamine, which were not seen in non-grafted lesion controls. The severity of these abnormal involuntary movements was significantly correlated with a higher graft-derived dopaminergic reinnervation in the caudal aspect of the head of striatum relative to the rostral part. The results indicate that graft-induced dyskinesias in PD patients may be linked to single, small graft deposits that provide an uneven, patchy reinnervation of the putamen.},
  author       = {Carlsson, Thomas and Winkler, Christian and Lundblad, Martin and Cenci Nilsson, Angela and Björklund, Anders and Kirik, Deniz},
  issn         = {0969-9961},
  keyword      = {Ventral mesenchephalon,Cell transplantation,Dyskinesia,l-DOPA,Parkinson's disease,Motor behavior},
  language     = {eng},
  number       = {3},
  pages        = {657--668},
  publisher    = {Elsevier},
  series       = {Neurobiology of Disease},
  title        = {Graft placement and uneven pattern of reinnervation in the striatum is important for development of graft-induced dyskinesia.},
  url          = {http://dx.doi.org/10.1016/j.nbd.2005.09.008},
  volume       = {21},
  year         = {2006},
}