Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
2007-11-12
pubmed:abstractText
Parkinson's disease patients sometimes experience deterioration of motor function to below their baseline "off" state, termed the "super-off" state. We used low subthreshold (0.05 mg/kg) to threshold (0.10 and 0.20 mg/kg) doses of apomorphine to demonstrate the "super-off" state in MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine)-lesioned mice. Twenty-four mice were randomized to receive apomorphine or vehicle. Within 20 min of administration, 0.10 and 0.20 mg/kg apomorphine-treated mice had less locomotion than controls. At the 100 min time point, 0.10 mg/kg apomorphine-treated mice had greater locomotion than controls. One week of suprathreshold levodopa pretreatment did not alter the response to these low apomorphine doses. Our results suggest that low doses of apomorphine can initially depress locomotion and subsequently stimulate locomotion, in a manner similar to what is seen in Parkinson's disease patients.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
27
pubmed:volume
428
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
64-7
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Low doses of apomorphine transiently reduce locomotor activity in MPTP-treated mice.
pubmed:affiliation
Parkinson's Disease Research, Education, and Clinical Center, Portland VA Medical Center, Portland, OR, USA. gunzlers@ohsu.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural