Abstract: This work studied the effect of selenium polysaccharide from the leaves of Cyclocarya paliurus (Batal) Ijinskaja (Se-CPP) on blood glucose, serum lipid and immunity in diabetic mice. The diabetic mice induced by high-fat diet and intraperitoneal injection of streptozotocin were administrated with physiological saline, Cyclocarya paliurus (Batal) Ijinskaja polysaccharide (CPP), CPP + sodium selenite, sodium selenite, Se-CPP at low, middle and high doses (0.2, 0.6, 1.8 g/(kg·d)) and Xiaoke pill. After 42 d administration, the levels of glucose tolerance, serum total cholesterol (TC) and triglyceride (TG), the activities of antioxidant enzymes, immune organ index, and spleen lymphocyte transformation rate were measured. The results showed that blood glucose, serum TC and TG levels in the low- and middle-dose Se-CPP groups were lower than those in the CPP and CPP + sodium selenite groups. In addition, Se-CPP had better antioxidant activity and could more effectively improve immunity in diabetic mice than CPP.

Key words: selenium polysaccharide from Cyclocarya paliurus (Batal) Ijinskaja, diabetic mice, blood glucose, serum lipid, antioxidant activity, immunity