Inhibitory Effects of Daiokanzoto (Da-Huang-Gan-Cao-Tang) on P-Glycoprotein
Figure 6
Lineweaver-Burk (a) and Dixon (b) plots for the inhibitory effects of rhubarb on ATPase activity in the presence of verapamil. (a) The final concentration of rhubarb was 0 (●), 0.0625 (○), 0.25 (▲), or 0.5 () mg/mL. (B) The final concentration of verapamil was 1.56 (●), 3.13 (○), 6.25 (▲), 12.5 (), 25 (■), or 50 (□) M. Data represent the mean SD of three experiments. : ATPase activity (nmol/mg protein/min), : verapamil concentration (M).