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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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ORIGINAL ARTICLES CARDIAC SECTION
The Journal of Cardiovascular Surgery 2009 October;50(5):687-94
Effects of simvastatin on systemic inflammatory responses after cardiopulmonary bypass
Tamayo E., Álvarez F. J., Alonso O., Bustamante R., Castrodeza J., Soria S., Lajo C.
1 Department of Anaesthesiology and Reanimation, Valladolid University Hospital, Valladolid, Spain
2 Department of Pharmacology and Therapeutics Faculty of Medicine, University of Valladolid, Valladolid, Spain
3 Department of Clinical Analysis, University of Valladolid, Valladolid, Spain
4 Department of Medicine and Public Health, Faculty of Medicine, University of Valladolid, Valladolid, Spain
Aim. Cardiopulmonary bypass is associated with a complex systemic inflammatory response and the extent of their increase has been correlated with the development of postoperative complications. Recent studies suggest that treatment with statins is associated with a significant and marked decrease in inflammation-associated variables such as cytokines. Therefore, we investigated the effects of preoperative simvastatin treatment on systemic inflammatory response and perioperative morbidity after cardiopulmonary bypass.
Methods. A prospective, randomized study, was designed. Forty-four subjects undergoing elective coronary artery bypass grafting who fulfilled the inclusion criteria were randomized to treatment with simvastatin (20 mg/day, group A, N. 22) or control (group B, N. 22) before surgery. Plasma levels of interleukins (IL-6, IL-8, TNF-a), and systemic inflammatory response score (SIRS) were measured during the surgical intervention and over the following 48 postoperative hours. Cytokine levels were measured by enzyme-linked assays from plasma samples obtained at specific time points pre- and post-operation.
Results. In both groups the serum levels of the proinflammatory cytokines (IL-6, IL-8, TNF-a), and leukocytes, and the SIRS score increased significantly over the baseline, though no significant differences were observed between the two groups. The preoperative and postoperative course did not differ between both groups.
Conclusion. In patients undergoing coronary artery bypass grafting with cardiopulmonary bypass, the administration of simvastatin doses not produce any changes in the inflammatory response as measured by the levels of IL-6, IL-8, TNF-a and SIRS score, nor does it reduce the complications after cardiac surgery.