Figure 2

Lineweaver–Burk Plots of the top three Kampo formulations. Inhibition of PTP1B-catalyzed hydrolysis of p-NPP by Daiokanzoto, Masiningan and Tokakujokito. Lineweaver–Burk plot of the effect of the Kampo formulations on PTP1B. The final concentrations of Daiokanzoto were as follows: 0, 2, 3 and 7 μUnit/mL. The final concentrations of Masiningan were as follows: 0, 3, 5 and 6 μUnit/mL. The final concentrations of Tokakujokito were as follows: 0, 3, 5 and 7 μUnit/mL.