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Monitoring the oxidative modification of lipoprotein(a) by capillary zone electrophoresis

Zinellu, Angelo and Sotgia, Salvatore and Usai, Maria Franca and Deiana, Luca and Carru, Ciriaco (2006) Monitoring the oxidative modification of lipoprotein(a) by capillary zone electrophoresis. European Journal of Lipid Science and Technology, Vol. 108 (5), p. 444-447. eISSN 1438-9312. Article.

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DOI: 10.1002/ejlt.200500333


Lipoprotein(a) [Lp(a)] is a recognized risk factor for atherosclerotic cardiovascular disease. It is made of a lipoprotein particle containing apoB100 linked by a single disulfide bridge to apolipoprotein(a), a glycosylated protein with a variable mass. Some authors suggest that oxidative modification could explain the contribution of Lp(a) in the development of atheromatous lesions in a comparable way to low-density lipoproteins (LDL). Recently, the use of capillary electrophoresis to measure the variations in the relative electrophoretic mobility (REM) of LDL subjected to copper oxidation has been proposed. The aim of this work is to employ this method also to monitor the copper-induced oxidative modification of Lp(a). Migration of Lp(a) was monitored by absorption at 200 nm in a 50 mmol/L tricine, 100 mmol/L methylglucamine, pH 9.7 run buffer. Contrary to the conventional slab gel methods, our procedure provides a rapid and reproducible means to measure the electrophoretic mobility of Lp(a) (migration time <10 min with a CV% <0.5).

Item Type:Article
ID Code:2439
Uncontrolled Keywords:Lp (a), oxidation, capillary electrophoresis
Subjects:Area 05 - Scienze biologiche > BIO/12 Biochimica clinica e biologia molecolare clinica
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
Deposited On:18 Aug 2009 10:07

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