Fig. 3

Effects of JWJTW on glucose tolerance, insulin release and insulin tolerance in diabetic rats. a GTT of diabetic rats; b IRT of diabetic rats; c ITT of diabetic rats. Normal: normal group rats without streptozotocin (STZ) or high-sucrose-high-fat diet; Diabetic: diabetic rats induced by STZ and a high-sucrose-high-fat diet; 1.025 g/kg/d JWJTW: diabetic rats treated with 1.025 g/kg/d Jia-Wei-Jiao-Tai-Wan; 2.05 g/kg/d JWJTW: diabetic rats treated with 2.05 g/kg/d Jia-Wei-Jiao-Tai-Wan. GTT and IRT: Oral glucose tolerance test and insulin release test, respectively, performed on diabetic rats that were orally administered 2.2 g of glucose per kg after 12 h of fasting (n = 10). ITT: insulin tolerance test performed on diabetic rats injected with 0.4 U insulin per kg after 4 h of fasting (n = 10)