Effects of SOD, L -NAME, epicatechin and FeTTPs on the ratio of p-Akt/total Akt in wild-type EPC. EPC cultures were exposed to nLDL (10 μg/ml) or oxLDL (10 μg/ml), or oxLDL (10 μg/ml) in the presence of SOD (100 U/ml), L -NAME (0.5 m M ), epicatechin (100 μ M ) or FeTPPs (2.5 μ M ) in serum-free medium. A control well was treated with serum-free medium alone. Density of the Akt and p-Akt bands was first corrected with respect to β-actin (not shown) and then the ratio of p-Akt/total Akt expression calculated. The ratio in the control group was assigned a value of 1.0. Data are presented as mean ± SD, n = 3; + p