Linked Life Data

641542

Source:http://linkedlifedata.com/resource/pubmed/id/641542

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1978-6-28
pubmed:abstractText
Lergotrile, a dopamine agonist, lowered whole brain DOPAC (3,4-dihydroxyphenylacetic acid) concentration in rats. At low doses down to 0.5 mg/kg of lergotrile mesylate, this effect occurred within 30 min, whereas at higher doses (20 mg/kg) the decline in DOPAC was delayed. The decrease in DOPAC persisted for several hours and presumably resulted from a compensatory decrease in brain dopamine turnover secondary to receptor stimulation by lergotrile. Other indications of decreased brain dopamine turnover after lergotrile included (a) a slower decline in dopamine concentration after synthesis inhibition by alpha-methyltyrosine, (b) a slower decline in alpha-methyl-m-tyramine, a false transmitter that is stored and released by dopamine neurons, and (c) a decreased accumulation of dopamine in response to gamma-butyrolactone, an agent that blocks firing and dopamine release by dopamine neurons. Lergotrile mesylate (20 mg/kg) also increased brain levels of 5-hydroxyindoleacetic acid and of 3-methoxy-4-hydroxyphenylethylene glycol sulfate, metabolites of serotonin and norepinephrine, respectively, and these increases were not antagonized by spiperone, a dopamine receptor antagonist.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0300-9564
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
23-35
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Effect of lergotrile on 3,4-dihydroxyphenylacetic acid (DOPAC) concentration and dopamine turnover in rat brain.
pubmed:publicationType
Journal Article