Fig. (6) Biological activity exerted by an Amino-Steroid-Anthracenone derivative (ASA) on Left Ventricular Pressure (LVP) in absence or presence of the compound ZM241385. The experimental results showed that ASA significantly decreased LVP (p = 0.05) in a dose-dependent manner and this effect was inhibited by ZM241385. Each data points represents the mean ± S.E. of 9 experiments.