Research Article

Intestinal, Airway, and Cardiovascular Relaxant Activities of Thymoquinone

Figure 8

Graph showing concentration-dependent relaxant effect of thymoquinone on high K+-(80 mM) and phenylephrine-(PE, 1  M) induced contractions in isolated endothelium-intact rat aorta. Graph also shows vasodilator effect of thymoquinone in the absence and presence of atropine (1  M) and L-NAME (0.1 mM) on PE-(1  M) induced contractions. Values shown are mean ± SEM, = 4-5; there is a significant difference between the two curves with “bold symbols” ( ), while no difference between all the three PE curves ( ). There is a significant difference between individual concentrations in all the curves ( ), two-way ANOVA.
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