Linked Life Data

6228278

Source:http://linkedlifedata.com/resource/pubmed/id/6228278

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1984-2-24
pubmed:abstractText
The selectivity of 4-methylhistamine (4-MH) as an agonist at histamine H1- and H2-receptors has been evaluated in the guinea-pig isolated ileum. The EC50 values of 4-MH on H1- and H2-receptors that mediate contractile responses were determined. The EC50 at H1-receptors was estimated after selective blockade of H2-receptors by tiotidine and the EC50 at H2-receptors estimated after selective blockade of H1-receptors by mepyramine. The -log EC50 values at H1- and at H2-receptors were 4.57 and 5.23, respectively. The dissociation constants for the interaction of 4-MH with H1- and H2-receptors were determined. The -log KD values at H1- and H2-receptors were 3.55 and 4.27, respectively. These results suggest that 4-MH is only about 5 times as potent at H2- as it is at H1-receptors in the guinea-pig ileum and that 4-MH should be used with caution to discriminate between H1- and H2-receptors.
pubmed:grant
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0007-1188
pubmed:author
pubmed:issnType
Print
pubmed:volume
80
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
65-71
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Selectivity of 4-methylhistamine at H1- and H2-receptors in the guinea-pig isolated ileum.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't