GPT and type 2 diabetes mellitus: The FBG levels were elevated in model group compared with control group, and the level was reduced in the MET, YYT-L, YYT-M, and YYT-H groups after 2, 3, and 4 weeks of drug administration compared with the model group (Figure 2A) After the treatment, serum levels of TC, TG, AST, ALT, Cr, and BUN were increased in T2DM rats compared with those in control group.