Plasma contents of apolipoprotein (a), apolipoprotein B 100, cholesterol, triglycerides, and vitamin E were measured in 2 patients with lipoprotein (a) concentration >100 mg/dl during the interaction with the anti-lipoprotein (a) immunosorbent. Intraindividual heterogeneity of apolipoprotein (a)-containing particles in the plasma was demonstrated. Polyclonal antibodies against lipoprotein (a) immobilized on Sepharose CL-4B more effectively removed free apolipoprotein (a) than complexes containing apolipoproteins B 100, apolipoprotein (a), lipids, and vitamin E.
Plasma level of lipid-standardized vitamin E is decreased, while the concentration of inflammatory transmitters C3a(desArg) and C5a(desArg) is elevated in heterozygous familial hypercholesterolemia caused by apoB,E-receptor deficiency. Leukocytes isolated from these patients exhibit enhanced spontaneous aggregation of superoxide anion generation and are resistant to activation with exogenous platelet activation factor (10 -6 M).
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