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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
1991-5-31
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pubmed:abstractText |
Three fractionation procedures (immunoaffinity chromatography, two-dimensional nondenaturing electrophoresis, and heparin-agarose affinity chromatography) have been compared in determining the kinetics of free and ester cholesterol transfer in normolipemic native plasma. Similar results were obtained in each case. Cell-derived free cholesterol is initially enriched in high density lipoproteins (HDL) (mainly HDL without apoE); at longer time periods (greater than 10 min) greater proportions are observed in very low density lipoproteins (VLDL) and low density lipoproteins (LDL). The major part of cholesteryl ester (about 90%) was retained in HDL, while VLDL and LDL, which contained about 75% of total cholesteryl ester mass, received only about 10% of cell-derived cholesteryl ester. Within HDL, almost all cholesteryl ester was in the apoE-free fraction. These data provide evidence that lipoprotein free and esterified cholesterol are not at chemical equilibrium in normal plasma, and that cell-derived cholesterol is preferentially directed to HDL. The techniques used had a comparable effectiveness for the rapid fractionation of labile lipoprotein lipid radioactivity.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
0022-2275
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
31
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
2195-200
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2090713-Cells, Cultured,
pubmed-meshheading:2090713-Chemical Fractionation,
pubmed-meshheading:2090713-Cholesterol,
pubmed-meshheading:2090713-Chromatography, Affinity,
pubmed-meshheading:2090713-Electrophoresis, Gel, Two-Dimensional,
pubmed-meshheading:2090713-Humans,
pubmed-meshheading:2090713-Kinetics,
pubmed-meshheading:2090713-Lipoproteins,
pubmed-meshheading:2090713-Lipoproteins, HDL
|
pubmed:year |
1990
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pubmed:articleTitle |
Distribution of cell-derived cholesterol among plasma lipoproteins: a comparison of three techniques.
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pubmed:affiliation |
Cardiovascular Research Institute, University of California Medical Center, San Francisco, CA 94143.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|