Biochem/physiol Actions SKA-31 is an activator of KCa2 and KCa3.1 calcium-activated potassium channels. Its EC50 is almost identical at 2-3 μM for all KCa2 subtypes, and about 10-fold lower (260 nM) at KCa3.1 channels. It has significant blood-pressure reducing activity in experimentally hypertensive mice,1 suggesting potassium channel activation as a therapeutic target for hypertension. SKA31 is an activator of KCa2 and KCa3.1 Potassium Channels, Potentiates the EDHF Response and Lowers Blood Pressure. |