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Rapid communication| Volume 117, ISSUE 1, P139-144, September 1995

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Dialysis of isolated low density lipoprotein induces a loss of lipophilic antioxidants and increases the susceptibility to oxidation in vitro

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      Abstract

      We determined the effects of different dialysis conditions on the antioxidant content, duration of the lag phase and oxidation rate of LDL. Dialysis for 22 h resulted in a 56%–66% reduction in the concentrations of β-carotene, lycopene and α-tocopherol. The lag phase of copper-induced oxidation of freshly isolated LDL was considerably longer than that of LDL dialysed for 22 or 44 h. Our data show that dialysis may result in LDL preparations with antioxidant compositions that are not truly representative of freshly isolated lipoproteins.

      Keywords

      Abbreviations:

      LDL (low density lipoprotein), LPO (lipoperoxides), MDA (malondialdehyde), PBS (phosphate-buffered saline), TAG (triacylglycerol)
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      References

        • Witztum JL
        • Steinberg D
        Role of oxidized low density lipoprotein in atherogenesis.
        J Clin Invest. 1991; 88: 1785
        • Steinbrecher UP
        • Zhang H
        • Lougheed M
        Role of oxidatively modified LDL in atherosclerosis.
        Free Rad Biol Med. 1990; 9: 155
        • Schwartz CJ
        • Valente AJ
        • Sprague EA
        A modern view of atherogenesis.
        Am J Cardiol. 1993; 71: 9B
        • Esterbauer H
        • Wäg G
        • Puhl H
        Lipid peroxidation and its role in atherosclerosis.
        Br Med Bull. 1993; 49: 566
        • Esterbauer H
        • Gebicki J
        • Puhl H
        • Jürgens G
        The role of lipid peroxidation and antioxidants in oxidative modification of LDL.
        Free Rad Biol Med. 1992; 13: 341
        • Gutteridge JMC
        • Halliwell B
        The measurement and mechanism of lipid peroxidation in biological systems.
        Trends Biochem Sci. 1990; 15: 129
        • Cominacini L
        • Garbin U
        • Davoli A
        • Micciolo R
        • Bosello O
        • Gaviraghi G
        • Scuro LA
        • Pastorino AM
        A simple test for predisposition to LDL oxidation based on the fluorescence development during copper-catalyzed oxidative modification.
        J Lipid Res. 1991; 32: 349
        • Esterbauer H
        • Striegl G
        • Puhl H
        • Rotheneder M
        Continous monitoring of in vitro oxidation of human low density lipoprotein.
        Free Rad Res Commun. 1989; 6: 67
        • Esterbauer H
        • Jürgens G
        Mechanistic and genetic aspects of susceptibility of LDL to oxidation.
        Curr Opin Lipidol. 1993; 4: 114
        • Kleinveld HE
        • Hak-Lemmers HLM
        • Stalenhoef AFH
        • Demacker PNM
        Improved measurement of low-density-lipoprotein susceptibility to copper-induced oxidation: application of a short procedure for isolating low-density lipoprotein.
        Clin Chem. 1992; 38: 2066
        • Puhl H
        • Waeg G
        • Esterbauer H
        Oxygen Radicals in Biological Systems, Part C. Methods in Enzymology. Vol. 233. Academy Press, 1994: 425
        • Reaven P
        • Parthasarathy S
        • Grasse BJ
        • Miller E
        • Almazan F
        • Mattson FH
        • Khoo JC
        • Steinberg D
        • Witztum JL
        Feasibility of using an oleate-rich diet to reduce the susceptibility of low-density lipoprotein to oxidative modification in humans.
        Am J Clin Nutr. 1991; 54: 701
        • Jialal I
        • Grundy SM
        Effect of dietary supplementation with alpha-tocopherol on the oxidative modification of low density lipoprotein.
        J Lipid Res. 1992; 33: 899
        • Princen HMG
        • Van Poppel G
        • Vogelezang C
        • Buytenhek R
        • Kok FJ
        Supplementation with vitamin E but not beta-carotene in vivo protects low density lipoprotein from lipid peroxidation in vitro — effect of cigarette smoking.
        Arteriosclerosis Thromb. 1992; 12: 554
        • Redgrave TG
        • Roberts DCK
        • West CE
        Separation of plasma lipoproteins by density-gradient ultracentrifugation.
        Anal Biochem. 1975; 65: 42
        • Markwell MAK
        • De Haas SM
        • Bieber LL
        • Tolbert NE
        A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples.
        Anal Biochem. 1978; 87: 206
        • Wong SHY
        • Knight JA
        • Hopfer SM
        • Zaharia O
        • Leach Jr, CN
        • Sunderman Jr, FW
        Lipoperoxides in plasma as measured by liquid chromatographic separation of malondialdehyde-thiobarbituric acid adduct.
        Clin Chem. 1987; 33: 214
        • El-Saadani M
        • Esterbauer H
        • El-Sayed M
        • Goher M
        • Nassar AY
        • Juergens G
        A spectrophotometric assay for lipid peroxides in serum lipoproteins using a commercially available reagent.
        J Lipid Res. 1989; 30: 627