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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2003-10-23
pubmed:abstractText
Behavioral analyses of mice intoxicated by the parkinsonian toxin 1-methyl-4-phenyl-1,2,3,6,-tetrahydropyridine (MPTP) have generated conflicting results. We therefore analyzed the relationship between behavioral changes, loss of monoamine levels, and loss of dopaminergic cell bodies in groups of mice intoxicated with acute or subchronic MPTP protocols. Despite a higher degree of neuronal loss in the mice intoxicated using subchronic protocols, dopamine loss was severe and homogeneous in the striatum in all groups. Dopamine levels were less severely reduced in the frontal cortex in the three groups of MPTP-intoxicated mice. Norepinephrine and serotonin levels in the striatum were decreased only in the mice intoxicated with the acute protocol. The most surprising result was that the mice intoxicated with the subchronic protocols were more active than the saline-treated mice. As reported in rats with dopamine depletion in the prefrontal cortex, the hyperactivity observed in our mice could be due to the reduced dopamine levels detected in this structure.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0969-9961
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
218-28
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Behavioral changes are not directly related to striatal monoamine levels, number of nigral neurons, or dose of parkinsonian toxin MPTP in mice.
pubmed:affiliation
INSERM U289, Experimental Neurology and Therapeutics, Hôpital de la Salpêtrière, 75013 Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't