Abstract:
:Evidence for chemical and biological heterogeneity of human plasma lipoprotein density classes has been steadily accumulating over the last 15 years. Furthermore, several recent reports have indicated potential clinical significance of certain lipoprotein subspecies as either atherogenic or antiatherogenic. It is generally accepted that lipid lowering treatments can retard or even reverse development of atherosclerotic lesions. However, very little is known about effects of various lipid lowering treatments on specific lipoprotein particles. The purpose of this study was to explore the effects of heparin induced extracorporal low density lipoprotein precipitation (HELP) on various subspecies of plasma lipoprotein particles defined primarily by their apolipoprotein composition. Using particle specific enzyme immunoassays, the immediate changes in lipoprotein particle profiles were analyzed after a single HELP treatment in 12 patients with angiographically documented coronary artery disease. In a separate group of 6 patients, particles were repeatedly measured over a period of 96 h following a HELP treatment. Single HELP treatment caused an immediate and highly significant decrease (67%) in the concentration of simple lipoprotein particles containing apolipoprotein B (apo B) as a sole apolipoprotein (LP-B). Various subspecies of complex particles containing apo B and other apolipoproteins (Lp-B-complex) were also decreased although to a lesser degree (44-53%). HELP treatment caused an insignificant, 3% decrease of lipoprotein particles containing apo A-I but no apo A-II (Lp-A-I) and a 6% decrease in the concentration of particles containing both apo A-I and apo A-II (Lp-A-I:A-II). During the 96-h period following HELP treatment various apo B containing particles recovered at different rates in different patients.(ABSTRACT TRUNCATED AT 400 WORDS)
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Koren E,Armstrong VW,Mueller G,Wilson PR,Schuff-Werner P,Thiery J,Eisenhauer T,Alaupovic P,Seidel Ddoi
10.1016/0021-9150(92)90019-dkeywords:
subject
Has Abstractpub_date
1992-08-01 00:00:00pages
157-70issue
2-3eissn
0021-9150issn
1879-1484pii
0021-9150(92)90019-Djournal_volume
95pub_type
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