Abstract：
:We describe a new method for the rapid fractionation of plasma lipoproteins, which makes use of a new non-ionic, iodinated, density gradient medium, iodixanol, commercially available as Optiprep(TM). The method is simple: plasma or serum is mixed with iodixanol followed by centrifugation in a vertical or near vertical rotor. Separation of VLDL, LDL and HDL can be achieved in 3 h and the lipoprotein fractions are comparable in density and composition with those prepared using conventional salt based gradients. Each class of lipoprotein can be removed in a single fraction, or a profile of lipoprotein distribution can be obtained using a gradient fractionator. Because the medium is inert, fractions from the gradient can be analysed by agarose gel electrophoresis or assayed for lipid content or apolipoprotein composition by SDS-PAGE without removing the iodixanol. Small differences in electrophoretic mobility of HDL and LDL across several gradient fractions suggest that subfractionation of these classes may occur. The new method is simple, rapid and versatile with potential application for preparation of lipoproteins and for analysis of lipoprotein profiles in the research or clinical laboratory.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Graham JM,Higgins JA,Gillott T,Taylor T,Wilkinson J,Ford T,Billington Ddoi
10.1016/0021-9150(96)05797-8subject
Has Abstractpub_date
1996-07-01 00:00:00pages
125-35issue
1eissn
0021-9150issn
1879-1484pii
0021-9150(96)05797-8journal_volume
124pub_type
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