INS and type 2 diabetes mellitus: Arginine, cinnamic acid, ferulic acid and other bioactive substances in the root of PQR can increase the levels of insulin, glycogen and high-density lipoprotein (HDL) in the mice with type II diabetes, and meanwhile reduce the levels of blood glucose, triglyceride, total cholesterol and low-density lipoprotein (LDL) to play a hypoglycemic role (Yoo et al., 2012).