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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1992-10-13
pubmed:abstractText
The ability of three 5-HT1 receptor agonists, 5-HT (5-hydroxytryptamine), 5-CT (5-carboxyamidotryptamine) and sumatriptan to inhibit the binding of [3H]5-HT, in the presence of cyanopindolol and mesulergine, from cerebral cortical and/or caudate membranes in seven species (dog, guinea-pig, rabbit, pig, human, hamster and calf) has been investigated. Under the experimental conditions used, 5-CT and sumatriptan consistently yielded displacement curves best fit to a two-site model whereas 5-HT always gave a monophasic displacement curve. The pIC50 values obtained with 5-HT displacement gave a mean of 8.1 +/- 0.1 (mean +/- S.E.M.). In contrast the biphasic displacement curves for 5-CT and sumatriptan yielded high and low affinity pIC50 values of 8.3 +/- 0.1, 5.5 +/- 0.1 and 7.6 +/- 0.1, 5.0 +/- 0.1, respectively. These data indicate that under these experimental conditions the high affinity component labelled by [3H]5-HT is the same receptor subtype, previously denoted the 5-HT1D receptor, in all seven species.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0014-2999
pubmed:author
pubmed:issnType
Print
pubmed:day
24
pubmed:volume
213
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
193-7
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
An investigation of the 5-HT1D receptor binding affinity of 5-hydroxytryptamine, 5-carboxyamidotryptamine and sumatriptan in the central nervous system of seven species.
pubmed:affiliation
Merck Sharp and Dohme Research Laboratories, Neuroscience Research Centre, Harlow, Essex, U.K.
pubmed:publicationType
Journal Article