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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1984-12-3
|
pubmed:abstractText |
Cation-exchange high-performance liquid chromatography (HPLC) was used to increase the sensitivity and specificity of the radioimmunoassay of plasma beta-endorphin. Proteins were precipitated from a 0.5 to 2.5 ml sample of plasma with 60% acetonitrile at pH 4.7. The supernatant was subjected to cation-exchange HPLC. Gradient elution with volatile buffers was used to separate beta-endorphin from beta-lipotropin. The beta-endorphin fraction (1.8 ml) was concentrated by lyophilization and subjected to radioimmunoassay. In healthy pregnant women at labour plasma concentration of beta-endorphin varied from 105 to 403 pg/ml. In healthy non-pregnant women plasma concentration of beta-endorphin was low, exceeding the detection limit (4 pg/ml) of the assay in only one of the 7 subjects studied.
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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:month |
Aug
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pubmed:issn |
0021-9673
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
3
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pubmed:volume |
297
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
399-403
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6092402-Chromatography, High Pressure Liquid,
pubmed-meshheading:6092402-Chromatography, Ion Exchange,
pubmed-meshheading:6092402-Endorphins,
pubmed-meshheading:6092402-Female,
pubmed-meshheading:6092402-Humans,
pubmed-meshheading:6092402-Pregnancy,
pubmed-meshheading:6092402-Radioimmunoassay,
pubmed-meshheading:6092402-beta-Endorphin
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pubmed:year |
1984
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pubmed:articleTitle |
Rapid extraction and separation of plasma beta-endorphin by cation-exchange high-performance liquid chromatography.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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