Linked Life Data

10762135

Source:http://linkedlifedata.com/resource/pubmed/id/10762135

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4 Suppl 1
pubmed:dateCreated
2000-4-21
pubmed:abstractText
Research into the cause of dyskinesias arising from levodopa treatment has been vexingly limited, partly due to the lack of an inexpensive and widely available animal model. Rodents do not develop levodopa-induced dyskinesias in a clinically recognizable form. However, nonhuman primates with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonism readily develop levodopa-induced dyskinesias that are virtually indistinguishable from those seen in patients with Parkinson's disease. We have developed and validated a five-point Global Primate Dyskinesia Rating Scale to accurately measure these dyskinesias. Monkeys with MPTP-induced parkinsonism were then investigated to evaluate the relationship between dyskinesias, parkinsonism and severity of the nigrostriatal lesion. All parkinsonian animals were responsive to levodopa, and developed dyskinesias within 2-3 days of levodopa administration. Monkeys treated with only a single injection of MPTP also developed dyskinesias, even though they were not parkinsonian. It would appear that there is a different threshold of striatal dopamine depletion for parkinsonism and dyskinesias in the monkey. Finally, three hypotheses, put forward to explain the genesis of dyskinesias, are reviewed, and various experimental approaches suggested for each.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0364-5134
pubmed:author
pubmed:issnType
Print
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
S79-89
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Investigating levodopa-induced dyskinesias in the parkinsonian primate.
pubmed:affiliation
The Parkinson's Institute, Sunnyvale, CA 94089-1605, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review, Research Support, Non-U.S. Gov't