[The role of released membrane microparticles in pathogenesis of systemic inflammatory response].

The aim of this work was to evaluate contribution of released membrane particles (RMP) to the development of systemic inflammatory response (SIR) after aortocoronary bypass grafting (ACBG). The number of RMP carrying surface adhesion molecules, CD62L, CD62P, CD62E, was shown to increase in the early postoperative period in parallel with the enhancement of lymphocyte plasma membrane blebbing and elevation of cytokine levels in peripheral blood. It is concluded that (1) activation of plasma membrane blebbing in peripheral blood cells underlies the appearance of RMP in circulation; (2) increased number of RMP expressing CD62L, CD62P, CD62E is a marker of intercellular communication associated with the development of SIR and suggests new mechanisms of RMP involvement in the reaction of organism to massive surgical injury.