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Expression of soluble endothelial adhesion molecules in clinical cardiopulmonary bypass

Cardiac Sciences Section, Northern General Hospital, Sheffield

Naomi Rebuck

Department of Child Health, University of Sheffield, Sheffield

Adam Finn

Department of Child Health, University of Sheffield, Sheffield

Alex Manché

Department of Cardiothoracic Surgery, Northern General Hospital, Sheffield

Neil Moat

Cardiac Sciences Section, University of Sheffield, Sheffield

Soluble endothelial adhesion molecule expression in clinical cardiopulmonary bypass (CPB) was investigated. Neutrophil-mediated endothelial injury plays an important role in CPB-induced organ dysfunction. The adhesion of neutrophil to the endothelium is central to this process. It has been well documented that CPB induces neutrophil activation and changes in neutrophil adhesion molecule expression, but the effect of CPB on endothelial cell activation is not known. This study was designed to measure soluble endothelial adhesion molecules during CPB.

We made serial measurements (by specific enzyme-linked immunoabsorbent assay) of plasma levels of the soluble endothelial adhesion molecules, ICAM-1 and E-selectin in patients undergoing routine CPB (n =7) and in a control group (thoracotomy, n = 3).

The results show an initial significant decrease during CPB followed by an increase in plasma E-selectin from 29.3 ± 5.1 ng/ml (mean ± SEM) prebypass to 34.0 ± 5.4 ng/ml at 48 h postbypass. Likewise, plasma ICAM-1 significantly decreased during CPB and then increased from 246.3 ± 38.0 ng/ml before bypass to 324.8 ± 25.0 ng/ml and 355.0 ± 23.0 ng/ml at 24 and 48 h after bypass, respectively. The rise in levels is statistically significant (p < 0.05).

This study shows a decrease in circulating ICAM-1 and soluble E-selectin during CPB and an increase in their levels at 48 h after CPB.

Perfusion, Vol. 13, No. 5, 314-321 (1998)
DOI: 10.1177/026765919801300506


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