Oxidation of low-density lipoprotein (LDL) has been strongly suggested as a key factor in the pathogenesis of atherosclerosis. Thus the inclusion of some anti-oxidant compounds such as Satureja Khozistanica,vitamin E and coenzyme Q10 in daily dietary food stuff may inhibit the production of oxidized LDL and may decrease both the development and the progression of atherosclerosis. The present study investigated the inhibitory effects of Satureja Khozistanica, vitamin E and coenzyme Q10 on LDL peroxidation induced by CuSO4 quantitatively in vitro. Materials and Methods: LDL was incubated with CuSO4 and the formation of conjugated dienes and thiobarbituric acid reactive substances (TBARS) of LDL were monitored as markers of LDL oxidation. Inhibition of this Cu-induced oxidation was studied in the presence of extracts of Satureja Khozistanica,vitamin E and coenzyme Q10. Results: It was demonstrated that Satureja Khozistanica like vitamin E and coenzyme Q10 is able to inhibit LDL oxidation and decrease the resistance of LDL against oxidation in vitro. Conclusion: This study showed that Satureja Khozistanica similar to vitamin E and coenzyme Q10 prevented the oxidation of LDL in vitro and it may suggest that they have the similar effect in vivo

Keywords: Satureja Khozistanica, Vitamin E, Coenzyme Q10, LDL oxidation.

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