LPO and liver dysplastic nodule: Table 3 displays the effects of berbamine (BBM), bergapten (BRG), carveol (CAR), and pregabalin (PBN) on streptozotocin (STZ)-induced DN, as well as the expression of glutathione (GSH), glutathione s-transferase (GST), inducible nitric oxide (iNOS), and lipid peroxidase (LPO).