Comparison of the Perioperative Time Course of Matrix Metalloproteinase-9 (MMP-9) and Its Inhibitor (TIMP-1) During Carotid Artery Stenting (CAS) and Carotid Endarterectomy (CEA)
Comparison of the Perioperative Time Course of Matrix Metalloproteinase-9 (MMP-9) and Its Inhibitor (TIMP-1) During Carotid Artery Stenting (CAS) and Carotid Endarterectomy (CEA)
The aim was the comparison of the perioperative time courses of matrix metalloproteinase-9 (MMP-9) and its inhibitor (TIMP-1) during elective carotid artery stenting (CAS). The investigators used a matched, historical carotid endarteriectomy group as controls. Blood samples at four time points: T1: preoperative; T2: 60 minutes after stent insertion; T3: first postoperative morning; and T4: third postoperative morning. Plasma was isolated from heparin anticoagulated blood samples by low speed centrifugation at 4 °C, and stored at -80 °C until analyzed in a single batch at the end of the study. Plasma concentrations of MMP-9 and TIMP-1 were expressed as ng/ml.
Inclusion Criteria:
elective carotid artery surgery
Exclusion Criteria:
Malignant diseases, inflammatory and systemic autoimmune disorders, psychiatric disorders and previous debilitating stroke