Abstract
We investigated the effects of herb extracts, Rhus verniciflua, Agrimonia pilosa, Sophora japonica, and Paeonia suffruticosa, on the lowering of blood glucose levels and thiobarbituric acid reactive substances (TBARS) in streptozotocin (STZ)-induced diabetic rats. After 4 weeks, oral administration of Rhus verniciflua extract (50 mg/kg) exhibited a significant decrease in blood glucose levels in diabetic rats (P<0.05). Blood TBARS concentrations, the products of glucose oxidation in blood, were also lowered by Rhus verniciflua extract supplementation. In addition, Sophora japonica and Paeonia suffruticosa extracts significantly reduced TBARS levels versus diabetic controls. Serum concentrations of liver-function marker enzymes, GOT and GPT, were also restored by Rhus verniciflua (50 mg/kg) supplementation in diabetic rats.
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