Myocardial ischemia induces SDF-1α release in cardiac surgery patients
J Cardiovasc Transl Res. 2016 Apr 7. [Epub ahead of print]
|Authors/Editors:||Kim BS, Jacobs D, Emontzpohl C, Goetzenich A, Soppert J, Jarchow M, Schindler L, Averdunk L, Kraemer S, Marx G, Bernhagen J, Pallua N, Schlemmer HP, Simons D, Stoppe C.|
In the present observational study, we measured serum levels of the chemokine stromal cell-derived factor-1α (SDF-1α) in 100 patients undergoing cardiac surgery with cardiopulmonary bypass at seven distinct time points including preoperative values, myocardial ischemia, reperfusion, and the postoperative course. Myocardial ischemia triggered a marked increase of SDF-1α serum levels whereas cardiac reperfusion had no significant influence. Perioperative SDF-1α serum levels were influenced by patients' characteristics (e.g., age, gender, aspirin intake). In an explorative analysis, we observed an inverse association between SDF-1α serum levels and the incidence of organ dysfunction. In conclusion, time of myocardial ischemia was identified as the key stimulus for a significant upregulation of SDF-1α, indicating its role as a marker of myocardial injury. The inverse association between SDF-1α levels and organ dysfunction association encourages further studies to evaluate its organoprotective properties in cardiac surgery patients.