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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1997-6-17
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pubmed:abstractText |
Widespread evidence supports the existence of an endogenous digitalis-like compound in mammals. We report here the development of a novel enzyme immunoassay for ouabain that, in conjunction with a detailed HPLC study, identifies a ouabain-like compound (OLC) in extracted human plasma. The assay is sensitive-minimum detection limit for OLC 37 pmol/L (11 pmol/L in plasma)-and has a working range (between-assay CV < 10%) of 180-10000 pmol/L (54-3000 pmol/L in plasma). Mean recoveries of ouabain added to plasma ranged from 90% to 100%, and plasma extracts diluted in parallel to the standard curve. Plasma OLC concentrations in 10 healthy volunteers averaged 92 pmol/L (range 55-168), assuming 100% cross-reactivity of OLC in the ouabain assay. HPLC analysis with two distinct chromatographic conditions demonstrated that endogenous human plasma OLC co-eluted with authentic ouabain. The enzyme immunoassay is rapid and easy to perform and will support further investigation of the nature of this controversial endogenous steroid.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0009-9147
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
43
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
715-22
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9166221-Chromatography, High Pressure Liquid,
pubmed-meshheading:9166221-Humans,
pubmed-meshheading:9166221-Immunoenzyme Techniques,
pubmed-meshheading:9166221-Microchemistry,
pubmed-meshheading:9166221-Ouabain,
pubmed-meshheading:9166221-Quality Control,
pubmed-meshheading:9166221-Reference Values,
pubmed-meshheading:9166221-Sensitivity and Specificity
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pubmed:year |
1997
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pubmed:articleTitle |
Development of enzyme immunoassay for endogenous ouabain-like compound in human plasma.
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pubmed:affiliation |
Department of Clinical Biochemistry, London, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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