Aprotinin enhances the endogenous release of interleukin-10 after cardiac operations

Gary E. Hill, Robert P. Diego, Alfred H. Stammers, Suzanne M. Huffman, Roman Pohorecki

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


Background. Cardiopulmonary bypass (CPB) is characterized by the systemic release of proinflammatory cytokines, such as tumor necrosis factor- α and the interleukins 1 and 6, as well as endogenous antiinflammatory cytokines, including interleukin-10 (IL-10). Glucocorticoids reduce tumor necrosis factor-α plasma concentrations while enhancing IL-10 plasma concentrations after CPB. Aprotinin, a serine protease inhibitor used primarily to reduce blood loss after CPB, reduces CPB-induced proinflammatory cytokine tumor necrosis factor-α release similarly to glucocorticoids. This study evaluates the effect of full-dose aprotinin on the plasma concentrations of IL-10 after CPB. Methods. Twenty adults were randomized into a control (group C, n = 10) and a full-dose aprotinin-treated group (group A, n = 10). Plasma levels of IL-10 were measured by enzyme-linked immunosorbent assay technique at baseline (before anesthetic induction), and at 1 and 24 hours after CPB termination. Results. A significant (p < 0.05) increase of IL-10 occurred in both groups at 1 and 24 hours after termination of CPB when compared with the same group at baseline. In group A, the increase in IL-10 was significantly greater than in group C (p < 0.05) at 24 hours after CPB. Conclusions. These results demonstrate an endogenous antiinflammatory response generated after CPB, characterized by IL-10 release, that is enhanced by aprotinin therapy. This study demonstrates a unique antiinflammatory activity of aprotinin that may be of clinical significance.

Original languageEnglish (US)
Pages (from-to)66-69
Number of pages4
JournalAnnals of Thoracic Surgery
Issue number1
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine


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