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  • Title: Serum non-transferrin-bound iron and low-density lipoprotein oxidation in heterozygous hemochromatosis.
    Author: van Tits LJ, Jacobs EM, Swinkels DW, Lemmers HL, van der Vleuten GM, de Graaf J, Stalenhoef AF.
    Journal: Biochem Biophys Res Commun; 2006 Jun 23; 345(1):371-6. PubMed ID: 16682004.
    Abstract:
    UNLABELLED: Non-transferrin-bound iron (NTBI) is implicated in lipid peroxidation but the relation with oxidative modification of low-density lipoprotein (LDL) is not known. We assessed variables reflecting in vitro and in vivo LDL oxidation in two age- and sex-matched groups (n=23) of hereditary hemochromatosis heterozygotes (C282Y), characterized by a clear difference in mean serum NTBI (1.55+/-0.57 micromol/L vs 3.70+/-0.96 micromol/L). Plasma level of oxidized LDL (absolute and relative to plasma apolipoprotein B), and IgG and IgM antibodies to oxidized LDL, markers of in vivo LDL oxidation, did not differ between the groups with low and high serum NTBI. Mean lag-phase of in vitro LDL oxidation was also not significantly different between both study groups. CONCLUSION: these findings do not support the hypothesis that NTBI promotes oxidative modification of plasma LDL.
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