PCK2 and type 2 diabetes mellitus: The effects of the GABA-rich adzuki bean diet on PEPCK and G6PC gene expression in the liver of T2DM mice, determined via the qPCR technique at the molecular level, are shown in Figure 5A. The expression of the G6PC gene in the liver of the M model group was up-regulated significantly compared with that of the C group (p < 0.05), and the expression of the G6PC gene in the liver of the TF3 group was down-regulated by 27.16% compared with the M group, and up-regulated by 33.33% compared with the C control group.