Fig. 4From: Butylidenephthalide antagonizes cromakalim-induced systolic pressure reduction in conscious normotensive ratsEffects of butylidenephthalide (Bdph, a), 4-aminopyridine (4-AP, b) and glibenclamide (GBC, c) on log dose–response curves of cromakalim for change of systolic pressure in conscious normotensive rats. All values are shown as mean ± SEM. The number of Bdph-treated rats was 8, and that of 4-AP- or GBC-treated rats was 6. * P < 0.05, ** P < 0.01 and *** P < 0.001 compared to their respective controlBack to article page