Effect of different 4-oxo-flavonoids of 40 μM on oxLDL-induced endothelial viability (A) and the level of MDA (B), NO (C) and sICAM-1 (D). EA.hy926 cells were pretreated with different 4-oxo-flavonoids of 40 μM, and exposed to oxLDL of 100 μg/mL for another 24 hs. Cell viability was measured by CCK-8 assay and the values were determined as the percentage of the control group. The level of MDA, NO, and sICAM-1 were determined by the corresponding detecting kits. All of the data are expressed as the means ± S.D. # P < 0.05, ## P < 0.01, compared with the control group; * P < 0.05, ** P < 0.01, compared with the oxLDL group.