Figure 3 from: Okechukwu P, Sharma M, Tan WH, Chan HK, Chirara K, Gaurav A, Al-Nema M (2020) In-vitro antidiabetic activity and in-silico studies of the binding energies of palmatine and the standard compounds with the three receptors of alpha amylase, alpha glucosidase, and DPP-IV enzyme. Pharmacia 67(4): 363-371. https://doi.org/10.3897/pharmacia.67.e58392

Figure 3 DPP-IV enzyme inhibting activity ((IC50(µM) of glimepiride, metformin, palmatine and standard drug(sitagliptin). The result are shown as Mean ± standard deviation in triplicates (n = 3). The data were statistically analyzed by One-way ANOVA followed by Dunnet's post hoc test. Graph showed that sitagliptin (a) vs. palmatine = p < 0.0001 = d. Glimepiride and metformin = NA = No activity.