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Methylprednisolone prevents inflammatory reaction occurring during cardiopulmonary bypass: effects on TNF-, IL-6, IL-8, IL-10

Department of Cardiovascular Surgery, Meram Medical School of Selcuk University, Meram, Konya, Turkey, jalecelik{at}hotmail.com

Niyazi Gormus

Department of Anesthesiology, Meram Medical School of Selcuk University, Meram, Konya, Turkey

Selmin Okesli

Department of Cardiovascular Surgery, Meram Medical School of Selcuk University, Meram, Konya, Turkey

Zulfikare Iik Gormus

Department of Physiology, Meram Medical School of Selcuk University, Meram, Konya, Turkey

Hasan Solak

Department of Anesthesiology, Meram Medical School of Selcuk University, Meram, Konya, Turkey

Objective: This study examined the correlation between tumour necrosis factor-alfa (TNF-), interleukin (IL)-6 and IL-8, IL-10 and methylprednisolone pretreatment.

Methods: This is a prospective, randomized and double-blinded study. Sixty patients undergoing coronary artery bypass grafting (CABG) were randomized to receive either intravenous methylprednisolone (n=30, Group M) or intravenous placebo (n=30, Group S). The patients received intravenously either 30 mg/kg methylprednisolone (Group M) or placebo (Group S) 10 min before and after cardiopulmonary bypass (CPB). In an intensive care unit (ICU), four additional doses were given at 6-hourly intervals. Blood samples for the measurements of TNF-, IL-6, IL-8 and IL-10 were obtained before induction of anaesthesia (T0=control value), after induction (T1), before starting CPB (T2), after aortic declamping (T3), at the end of CPB (T4) and 6 hours (T5), 12 hours (T6) and 24 hours (T7) after skin closure. Creatine kinase (CK) and creatine kinase isoenzyme MB (CK-MB) were evaluated at the following intervals: T0, T5, T6 and T7.

Results: When compared with the control value, TNF-, IL-6 and IL-8 significantly increased in Group S and Group M (p B-0.05), but these values were significantly greater in Group S than in Group M (p B-0.05). In comparison with the control value, IL-10 increased in both groups (p B-0.05), but was significantly greater in Group M than in Group S (p B-0.05). CK and CK-MB were increased in both groups in postoperative values compared to control values. In Group S, CK and CK-MB levels were significantly lower than in Group M (p B-0.05).

Conclusion: In this study, we have found that pre-operative administration of methylprednisolone has decreased TNF-, IL-6 and IL-8 release, and increased the perfusing IL-10 levels after CPB. Thus, methylpredniso-lone may decrease the inflammatory response during the CPB procedure.

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