Summary
Serum α-tocopherol and retinol concentrations were followed in four heterozygous adults and one homozygous child with familial hypercholesterolemia being treated by regular low-density lipoprotein (LDL) apheresis. Approximately 50% of plasma α-tocopherol was eliminated during a single apheresis procedure in the heterozygous adults, while a complete elimination of this vitamin along with LDLs was observed in the homozygous child. Absolute losses of α-tocopherol amounted to 13.4–22.5 mg/apheresis and are equivalent to the recommended dietary intake for 1.5 to 2 days. Despite these losses, no changes were observed either in serum α-tocopherol levels or in the ratio of α-tocopherol/total serum lipids after 12 months regular apheresis treatment. Serum retinol concentrations only showed a small decrease on apheresis, there being apparently no specific elimination of this vitamin. The absolute losses ranged from 42–422 µg/apheresis and were, therefore, much lower than the recommended dietary intake of the equivalent of 1500 µg retinol/day. It is concluded that no extra supplementation of these vitamins is required during LDL-apheresis therapy, although it may be advisable to monitor vitamin E status in patients on long-term, intensive therapy.
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Dedicated to Professor Dr. N. Zöllner on the occassion of his 65th birthday
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Armstrong, V.W., Niedmann, D., Eisenhauer, T. et al. Acute and long-term effects of low-density lipoprotein apheresis on the serum concentrations of vitamins E and A. Klin Wochenschr 66, 123–128 (1988). https://doi.org/10.1007/BF01774226
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DOI: https://doi.org/10.1007/BF01774226