Fig. 1

ATP2B1 gene silencing results in increased basal NO production and eNOS activity in HUVECs. a Representative Western blotting results of PMCA1 protein and GAPDH. b The fold changes in PMCA1 protein relative to that in the control cells were quantified by densitometry (n = 4). Forty-eight hours after transfection, NO production (c) and eNOS activity (d) were detected in HUVECs. e Representative Western blotting results of p-eNOS, eNOS and GAPDH (n = 3). f Fold changes in phosphor-eNOS vs. total eNOS relative to its basal levels in control cells. *P < 0.05