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The aims of the present study were to analyze cardiac collagen metabolism changes in vivo during acute and nonacute phases of ST elevation myocardial infarction (STEMI) in patients who were treated with primary coronary intervention (PCI) only, and to determine the predictive significance of collagen I and III synthesis markers (PICP, PIIINP) as well as the collagen I degradation marker (ICTP) on left ventricular function and volume changes after STEMI. Serum levels of the carboxy-terminal propeptide of type I procollagen (PICP) and amino-terminal propeptide of type III procollagen (PIIINP) assessed on the 30th day and the carboxyterminal telopeptide located at the C end of collagen type I (ICTP) assessed on the 7th day after STEMI were significantly higher (P = 0.01, P = 0.019, P = 0.04, respectively) in the PCI unsuccessful group than in the PCI successful group. These findings support the theory that early and successful PCI not only limits the amount of muscle necrosis but also protects cardiac collagen from ischemia-related injury. PICP and PIIINP levels assessed on the fourth day after acute STEMI enables us to predict the development of left ventricular function (EF) and end-diastolic volume changes over the course of 6 months, irrespective of the initial EF or revascularization success.

Influence of Primary Coronary Intervention on Myocardial Collagen Metabolism and Left Ventricle Remodeling Predicted by Collagen Metabolism Markers