Linked Life Data

8236365

Source:http://linkedlifedata.com/resource/pubmed/id/8236365

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1993-12-20
pubmed:abstractText
To establish the usefulness of fluorescence detection to quantify urinary concentrations of dextromethorphan and dextrorphan for oxidation phenotyping, we determined the molar concentration ratio of dextromethorphan to dextrorphan in 38 subjects by UV and fluorescence detection. Dextromethorphan and dextrorphan concentrations were quantified after overnight hydrolysis of urine samples and organic solvent extraction with heptane and butanol. The compounds were separated by high-performance liquid chromatography using a phenyl column and a mobile phase consisting of acetonitrile and an aqueous mixture of 0.01 M heptane sulfonic acid and 0.01 M phosphate buffer. The eluents were detected in series by a UV detector (280 nm) and fluorescence detector (excitation 280 nm and emission 310 nm). The dextromethorphan to dextrorphan molar concentration ratio by UV and fluorescence detection was highly correlated (r = 0.997) and not statistically different (p = 0.1036). However, increased sensitivity with fluorescence detection enabled detection of lower dextromethorphan and dextrorphan concentrations when compared with UV detection. Fluorescence detection was able to detect dextromethorphan as low as 0.02 microgram/ml, which may be helpful in phenotyping individuals with extremely rapid metabolism of dextromethorphan. Fluorescence detection also produced chromatograms with significantly less interference and allows a more accurate quantitation of dextromethorphan and dextrorphan concentrations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0163-4356
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
300-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
High-performance liquid chromatography determination of dextromethorphan and dextrorphan for oxidation phenotyping by fluorescence and ultraviolet detection.
pubmed:affiliation
Department of Pharmacology, University of Texas Health Science Center at San Antonio 78284-6220.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't