Fig. 4

Dose response curve with the mean EC50 for compounds; (a): Nitroglycerin, (b):2e compound (c): 2h, (d): 2j and (e): Mean EC50. Values represent means ± SD (n = 5rats for each investigated drug). A significant difference is reported when P is less than 0.05 and determined by one -way ANOVA followed by pairwise comparison using Dunnet ’s test. ****statistically significant as compared to the nitroglycerin control group (P˂0.0001).