Table 2.

Mean values of the serum insulin level in CON, CON +100 mg/kg/day berberine, diabetic, and diabetic +100 mg/kg/day berberine rats at 8 weeks after STZ-injection in Experiment I

Group	Insulin (μIU/ml)
CON (n = 20)	9.0 ± 1.5
CON + berberine (n = 20)	8.7 ± 1.7
Diabetic (n = 20)	13.6 ± 1.8*
Diabetic + berberine (n = 20)	11.5 ± 1.2#,*

CON control rats, CON + berberine control rats administrated with berberine (100 mg/kg/day), Diabetic diabetic rats, diabetic + berberine diabetic rats administrated with berberine (100 mg/kg/day). * P < 0.05 vs. CON and ^# P < 0.05 vs. diabetic rats