[Expression of matrix metalloproteinase-9 and its complex in the urine of breast cancer patients].

Objective: To investigate the expression and clinical significance of matrix metalloproteinase-9 and its complex in the urine of the patient with breast cancer.

Methods: Using substract gel electrophoresis and western-blot analysis, expressions of MMP-9 and MMP-9/NGAL complex in breast cancer (n = 97), breast benign (n = 41) and normal (n = 60) were observed.

Results: There MMP-9 and MMP-9/NGAL complex expressions were 76.