“… epinephrine (1-100 microM) each reduced peak Kir … +/- 7.0%, respectively, at 100 microM. Forskolin (KD of approximately 25 microM), an activator of adenylate cyclase (AC), and dibutyryl-cyclic AMP (1 mM), … used to increase [cAMP]i, the product of AC, and resulted in similar reductions of Kir currents.”