The Protective Effects of Isoliquiritigenin and Glycyrrhetinic Acid against Triptolide-Induced Oxidative Stress in HepG2 Cells Involve Nrf2 Activation

Figure 6

Cells were treated with different concentrations of GA and tBHQ for 24 h, after which they were exposed to 50 nM TP for 24 h. The protein expressions (a) and gray value of HO-1 (b), NQO1 (c), and MRP2 (d) were measured (). versus control; versus TP group. Control (Column 1): 0.1% DMSO.

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