Abstract:Objective: To investigate the effects of Huangjin capsule on insulin sensitivity in type 2 diabetic rats with insulin-resistance (IR) and the primary pharmacological mechanism. Method: The model for type 2 diabetic-insulin-resistant rats (T2DIRR) were performed through intraperitonea injection of lower dosage of streptozocin(30 mg/kg) and high caloric diet (abounded with sugar & fat). The effects of Huangjin on weight, blood and/or serum contents of glucose, lipids,insulin and insulin sensitive index(ISI) were observed in the model rats. Result: Huangjin lowered significantly fasting blood glucose (FBG)(P<0.05) and improved impaired glucose tolerance (IgT); and reduced the concentration of insulin in hyperinsulinemia, and potentiated ISI (P<0.01) in T2DIRR. Conclusion: In the experiment with type 2 diabetic-insulin-resistantrats, Huangjin can reduce the level of blood glucose, and improve insulin sensitivity.