OBJECTIVES:
Increased cell expression of matrix metalloproteinase-9 (MMP-9) was associated with the development of atherosclerosis and osseoarticular tissue destruction in hemodialysis patients. In this study, the pre- and post-HD plasma concentrations of type IV collagenases and their inhibitors in HD patients were examined.
DESIGN AND METHODS:
Commercial ELISA kits and Zymography techniques were used to assay the parameters in 40 patients pre- and post-HD session.
RESULTS:
After the hemodialysis process, MMP-9, MMP-2 and TIMP-2 levels were 124 +/- 72, 706 +/- 242 and 248 +/- 90 ng/mL, significantly different from the pre-HD values (187 +/- 148, 759 +/- 304 and 43 +/- 14 ng/mL). TIMP-1 were not affected by HD. Female subjects and patients with chronic glomerulonephritis had higher TIMP-2 than their counterparts (p < 0.05). The effect of gender on MMP-2 levels was interacted with that of membrane types (p < 0.01).
CONCLUSION:
These results indicated that the hemodialysis process tends to decrease the overall activity of the peripheral plasma MMP system in HD patients.
