• Min Cheng, Satwat Hashmi, Xiaobo Mao, and Qiu Tang Zeng.
• Department of Interventional Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
• Can J Cardiol. 2008 May 1; 24 (5): 385-90.

ObjectivesAdiponectin, 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).MethodsThe 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.ResultsThe 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.ConclusionIn 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.

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