AIM: To explore the relationship of MMP-9 and serum fructosamine levels and further illustrate the role of the development in diabetic retinopathy patients.

METHODS: Serum MMP-9 levels were measured using enzyme-linkedimmunosorbent assays a in 30 health controls and 30 diabetic retinopathy patients, the relationship of MMP-9 and serum fructosamine levels were analyzed。

RESULTS: Compared with healthy controls. The expression levels of MMP-9 indiabetic retinopathy patients were significantly increased \〖(8.14±2.28pmol/L), vs(2.47±1.41pmol/L)\〗, MMP-9 were positive correlation with fructosamine(r=0.94, P<0.05).

CONCLUSION:The occurrence and progress of diabetic retinopathy might be closely related to the expression level of MMP-9, and the abnormal expression of MMP-9 in patients' serum might be associated with the secretion of fructosamine.