Table 4.
Change of susceptibility of LDL and HDL to oxidation
| Group | Initial LPO† (nmol/mg cholesterol) |
Lag time (min) |
CD‡ (nmol/mg protein) |
Propagation rate (ΔA234/min × 10−2) |
||||
|---|---|---|---|---|---|---|---|---|
| LDL | HDL | LDL | HDL | LDL | HDL | LDL | HDL | |
| Control | 9.5 ± 2.4 | 8.4 ± 1.7 | 38 ± 21 | 19 ± 10 | 95 ± 37 | 20 ± 9 | 3.5 ± 1.2 | 0.52 ± 0.22 |
| SHE | 8.1 ± 1.9 | 6.4 ± 2.0* | 65 ± 29* | 26 ± 12 | 89 ± 33 | 18 ± 10 | 3.1 ± 1.1* | 0.49 ± 0.20 |
The results are expressed as means ± SD of six rats per group. †The initial hydroperoxide contents in lipoprotein fractions at the beginning of oxidation were expressed on a per mg cholesterol basis. ‡ Absorbance units were converted to molar units of conjugated dienes (CD) using the molar extinction coefficient 29500 M−1·cm−1. *p<0.05, compared with control group.