Figure 2.

Effect of berberine on basal and insulin-stimulated glucose production in HepG2 cells. Tests were performed in the absence or presence of insulin (100 nmol/L) after cells were exposed to Tu and pretreated with berberine. Data are means±SEM. n=6 in each condition. ^cP<0.01 vs Nor. ^fP<0.01 vs Tu (0.5 μg/mL). ⁱP<0.01 vs Tu (2.0 μg/mL).