title: Relationships of adiponectin and matrix metalloproteinase-9 to tissue inhibitor of metalloproteinase-1 ratio with coronary plaque morphology in patients with acute coronary syndrome.
abstract: OBJECTIVE
  Adiponectin, an adipocyte-specific protein, matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) play a crucial role in arteriosclerosis and plaque disruption. The present study was designed to elucidate the relationship of adiponectin and the ratio of MMP-9/TIMP-1 and their effects on the stability of plaque in acute coronary syndrome (ACS).
  
  
  METHODS
  The concentrations of adiponectin, MMP-9, TIMP-1 and interleukin-10 were analyzed using ELISA in 56 consecutive unselected patients divided into two groups, stable angina (n=13) and ACS (n=43), and were compared with 19 healthy control subjects. The 56 patients were also angiographically studied and divided into two groups, simple lesion (n=22) and complex lesion (n=34), based on coronary plaque morphology.
  
  
  RESULTS
  The ratio of MMP-9/TIMP-1 showed significantly higher values in the ACS group compared with the control group (0.22+/-0.10 versus 0.11+/-0.03; P<0.001). Adiponectin was negatively correlated with the ratio of MMP-9/TIMP-1 (r=--0.332; P=0.008) and positively correlated with interleukin-10 (r=0.651; P=0.001). Multivariate logistic regression analysis showed that adiponectin (P=0.046) and MMP-9/TIMP-1 (P=0.044) are independent predictors for ACS, and MMP-9/TIMP-1 (P=0.013) is an independent predictor for complex lesion morphology plaques.
  
  
  CONCLUSIONS
  In the present study, it was found that adiponectin has a negative relationship with the ratio of MMP-9/TIMP-1 in patients with ACS, and that the ratio of MMP-9/TIMP-1 is an independent predictor of the stability of atherosclerotic plaque and the severity of coronary atherosclerosis.
authors.affiliation: Department of Interventional Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
authors.forename: Min
authors.initials: M
authors.lastname: Cheng
authors.forename: Satwat
authors.initials: S
authors.lastname: Hashmi
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Mao
authors.forename: Qiu Tang
authors.initials: QT
authors.lastname: Zeng
mesh_terms: D054058:Acute Coronary Syndrome / Q000097:blood* / Q000000981:diagnostic imaging; D052242:Adiponectin / Q000097:blood*; D016022:Case-Control Studies; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000097:blood / Q000000981:diagnostic imaging; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D016753:Interleukin-10 / Q000097:blood*; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D008875:Middle Aged; D012720:Severity of Illness Index; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000097:blood*
chemical_list: D052242:Adiponectin; D019715:Tissue Inhibitor of Metalloproteinase-1; D016753:Interleukin-10; D020780:Matrix Metalloproteinase 9