Linked Life Data

698031

Source:http://linkedlifedata.com/resource/pubmed/id/698031

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1978-12-29
pubmed:abstractText
1. A high performance liquid chromatographic method for the determination of propranolol in human plasma and blood has been developed and used to confirm that cumulation occurred during chronic oral administration, steady-state being achieved within 48 h of beginning 80 mg of the drug every 8 h. 2. The method was adapted to measure [H3]-propranolol and native drug in the same blood sample and was applied to determine simultaneously the disposition of i.v. ([H3]-propranolol) and orally (non-labelled) administered drug after single oral dose of 80 mg and when steady-state had been established on an 80 mg, 8-hourly regimen. 3. Using this approach it was possible to show that a reduced oral clearance at steady-state was associated with a smaller reduction in systemic (i.v.) clearance and no change in liver blood flow. A direct estimate of bioavailability was also possible and was found to be increased at steady-state compared with a single oral dose. 4. We conclude that the accumulation of propranolol during the attainment of steady-state is due to a reduction in intrinsic clearance, resulting in reduced presystemic hepatic extraction.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0306-5251
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
345-50
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Direct measurement of propranolol bioavailability during accumulation to steady-state.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.