title: Relationships between circulating matrix metalloproteinase-2 and -9 and renal function in patients with chronic kidney disease.
abstract: BACKGROUND
  It has been proven that extracellular matrix turnover is involved in the pathogenesis of various renal fibrosis diseases. Matrix metalloproteinase-2 and -9 (MMP-2 and -9) are the extracellular matrix degrading enzymes that are believed to play important roles in renal diseases. However, the relationship of circulating levels of MMP-2, -9 and serum creatinine in the patients of chronic kidney disease (CKD) has not yet been investigated.
  
  
  METHODS
  Gelatin zymography and ELISA were employed to measure MMP-2 and MMP-9 activities in the plasma samples of 60 CKD patients and 40 control subjects.
  
  
  RESULTS
  Serum creatinine concentrations and MMP-2 activities were significantly higher (p<0.001) while MMP-9 activity and creatinine clearance (CCr) were significantly lower (p<0.05 and p<0.001, respectively) in CKD patients, as compared with those of control subjects. In addition, serum creatinine concentrations correlated with MMP-2 activity (R=0.288, p<0.05) and inversely correlated with that of MMP-9 (R=0.344, p<0.01).
  
  
  CONCLUSIONS
  This study demonstrated a correlation between MMP-2, -9 and serum creatinine in CKD patients to suggest that MMP-2 and MMP-9 might contribute in the pathogenesis of CKD.
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Chung-Shan Medical University Hospital, Taichung 402, Taiwan.
authors.forename: Horng-Rong
authors.initials: HR
authors.lastname: Chang
authors.forename: Shun-Fa
authors.initials: SF
authors.lastname: Yang
authors.forename: Mei-Lan
authors.initials: ML
authors.lastname: Li
authors.forename: Chiu-Chu
authors.initials: CC
authors.lastname: Lin
authors.forename: Yih-Shou
authors.initials: YS
authors.lastname: Hsieh
authors.forename: Jong-Da
authors.initials: JD
authors.lastname: Lian
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003404:Creatinine / Q000097:blood; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D007668:Kidney / Q000503:physiopathology*; D007674:Kidney Diseases / Q000097:blood* / Q000201:enzymology / Q000503:physiopathology; D016014:Linear Models; D008297:Male; D020778:Matrix Metalloproteinase 2 / Q000097:blood*; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D008875:Middle Aged
chemical_list: D003404:Creatinine; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9