Figure 4.

Oxidation-related parameters. Oxidation of lipoproteins dialyzed in PBS was induced by adding 5 µM CuSO₄ and was monitored at 234 nm. (a) LDL susceptibility to oxidation. Data are expressed as the increase in the absorbance per minute. (b) Representative kinetics of LDL oxidation. (c) HDL susceptibility to oxidation. Data are expressed as the increase in absorbance per minute during the phase of maximal slope, mean ± SEM. (d) Representative kinetics of HDL oxidation. (e) Protective effect of HDL on LDL oxidation. Data are expressed as the increase in absorbance per minute during the maximal slope phase. (f) Representative kinetics of human LDL + murine HDL oxidation. Data in (a,c,e) are shown as box-plot graphs, n = 7 in control and scramble groups, n = 10 in the peptide group. Bars indicate p < 0.05 vs. other groups.