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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1984-11-9
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pubmed:abstractText |
The imidazobenzodiazepine midazolam (MDZ), along with its 1-hydroxy and 4-hydroxy metabolites (1-OH-MDZ, 4-OH-MDZ) can be simultaneously quantitated by electron capture gas-liquid chromatography. After addition of diazepam as internal standard, alkalinized plasma samples are extracted into benzene-isoamyl alcohol. The organic extract is separated, evaporated to dryness, reconstituted, and chromatographed using 3% SP-2250 as the liquid phase. The identity of 4-OH-MDZ, not previously detected in human plasma in unconjugated form, was verified by negative-ion chemical ionization mass spectroscopy. After single oral doses of MDZ administered to humans, concentrations of MDZ and 1-OH-MDZ (alternatively named 1-hydroxymethyl midazolam) were similar, and both compounds were eliminated from plasma in parallel. Concentrations of 4-OH-MDZ were considerably lower, but this metabolite was also eliminated in parallel with the parent compound.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0031-7012
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
29
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
158-64
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:6483962-Benzodiazepines,
pubmed-meshheading:6483962-Chromatography, Gas,
pubmed-meshheading:6483962-Female,
pubmed-meshheading:6483962-Gas Chromatography-Mass Spectrometry,
pubmed-meshheading:6483962-Humans,
pubmed-meshheading:6483962-Hydroxylation,
pubmed-meshheading:6483962-Kinetics,
pubmed-meshheading:6483962-Midazolam
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pubmed:year |
1984
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pubmed:articleTitle |
Quantitation by gas chromatography of the 1- and 4-hydroxy metabolites of midazolam in human plasma.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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