Research Article

Stevia Nonsweetener Fraction Displays an Insulinotropic Effect Involving Neurotransmission in Pancreatic Islets

Figure 4

Effect of epinephrine, yohimbine, and propranolol on insulin secretion in the absence (empty bars) or presence (filled bars) of the ethyl acetate fraction ((EAF) 0.3 μg/mL). Insulin secretion was stimulated or inhibited as indicated above or below the x-axis, respectively. The values represent percentage (mean ± SEM; ) of the insulin secretion in 16.7 mM of glucose represented by line 0 (; in relation to the control, one-way ANOVA, Tukey).