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Clinical Chemistry 41: 1018-1021, 1995;
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Clinical Chemistry, Vol 41, 1018-1021, Copyright © 1995 by American Association for Clinical Chemistry

Modified (desialylated) low-density lipoprotein measured in serum by lectin-sorbent assay

VV Tertov, IA Sobenin and AN Orekhov
Institute of Experimental Cardiology, Cardiology Research Center, Moscow, Russia.

Modified low-density lipoprotein (LDL) with a low sialic acid content was found in the blood of patients with coronary atherosclerosis. This desialylated lipoprotein causes lipid accumulation in arterial smooth- muscle cells and stimulates cell proliferation and production of the extracellular matrix, i.e., induces all atherogenic manifestations at the cellular level. We have developed a lectin-sorbent assay for the determination of desialylated LDL in sera. The assay is based on the binding of desialylated LDL by immobilized Ricinus communis agglutinin with subsequent measurement of lipoprotein through use of anti- apolipoprotein (apo) B antibody. The assay is sensitive to desialylated apo B concentrations as low as 5 micrograms/L. The intraassay and interassay CVs were 4.8% and 11.3%, respectively. Comparison between the lectin-sorbent assay and a lectin chromatographic technique showed a good correlation. This determination of modified desialylated LDL in human serum with high accuracy and reproducibility may help establish the diagnostic value of this lipoprotein as a risk factor of atherosclerosis.


The following articles in journals at HighWire Press have cited this article:


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 Arterioscler. Thromb. Vasc. Bio.Home page
B. Chappey, B. Beyssen, E. Foos, F. Ledru, J. L. Guermonprez, J. C. Gaux, and I. Myara
Sialic Acid Content of LDL in Coronary Artery Disease: No Evidence of Desialylation in Subjects With Coronary Stenosis and Increased Levels in Subjects With Extensive Atherosclerosis and Acute Myocardial Infarction : Relation Between Desialylation and In Vitro Peroxidation
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[Abstract] [Full Text] [PDF]

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J. Vaysse, M. Beaugrand, and M. Pontet
Measurements of Total and Desialylated Sex Hormone-binding Globulin in Serum by ELISA
Clin. Chem., April 1, 1998; 44(4): 882 - 884.
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Copyright © 1995 by the American Association for Clinical Chemistry.