Linked Life Data

11181919

Source:http://linkedlifedata.com/resource/pubmed/id/11181919

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2001-2-22
pubmed:abstractText
The prescribed use of methylphenidate (Ritalin) in the treatment of attention deficit hyperactivity disorder has risen dramatically in recent years. The relative roles of dopamine, norepinephrine, and serotonin in the therapeutic action of these drugs was assessed by comparing the responses of extracellular nucleus accumbens dopamine and serotonin and hippocampus norepinephrine to the acute administration of low methylphenidate and amphetamine doses. The comparative neurochemical profiles in response to methylphenidate and amphetamine suggest that the norepinephrine effects may play an important role in the therapeutic effects of low doses of psychostimulants. In addition, to assess possible long-term consequences of prolonged exposure to this drug, we examined whether changes in the locomotor response occurred with repeated administration of these stimulant doses. Threshold doses of methylphenidate (0.5-1.0 mg/kg) or amphetamine (0.1-0.25 mg/kg) were administered twice daily, and then animals were tested in response to 2.5 mg/kg methylphenidate or 0.5 mg/kg amphetamine. Our results provide evidence that low-dose stimulant administration can result in the development of behavioral sensitization, which is evident in the subsequent behavioral response to the drug. The relevance of these data to the therapeutic uses of these drugs is discussed within the context of the many variables that can affect the behavioral and neurochemical responses to stimulants.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-3565
pubmed:author
pubmed:issnType
Print
pubmed:volume
296
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
876-83
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Locomotor effects of acute and repeated threshold doses of amphetamine and methylphenidate: relative roles of dopamine and norepinephrine.
pubmed:affiliation
Department of Psychiatry, School of Medicine, University of California at San Diego, La Jolla, California 92093, USA. rkuczenski@ucsd.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.