Fig. 2From: Endothelial permeability following coronary artery bypass grafting: an observational study on the possible role of angiopoietin imbalanceChanges in angiopoietin and TIE2 serum levels upon coronary artery bypass graft (CABG). Serum was sampled from patients being scheduled for elective on-pump CABG before surgery (preop) and 1, 6 and 24 h after closure of the aortic clamp. Serum was analyzed for angiopoietin 1 (ANG1) (a), ANG2 (b) and soluble TIE2 receptor (sTIE2) (d) by enzyme-linked immunosorbent assay. Furthermore, the ANG2/ANG1 ratio was calculated (c). N = 28 (24-h time point, n = 26), median with percentile 25–75, *p <0.05, **p <0.01, ***p <0.001 (vs. preop). CPB cardiopulmonary bypassBack to article page