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Mediators of Inflammation
Volume 2008, Article ID 235461, 6 pages
http://dx.doi.org/10.1155/2008/235461
Clinical Study

Early Expression of Fc ๐œธ RI (CD64) on Monocytes of Cardiac Surgical Patients and Higher Density of Monocyte Anti-Inflammatory Scavenger CD163 Receptor in “On-Pump” Patients

1Department of Clinical Immunology and Allergy, Medical School in Hradec Krรกlovรฉ, Charles University in Prague, Sokolska Street 581, Hradec Krรกlovรฉ 50005, Czech Republic
2Department of Cardiosurgery, Medical School in Hradec Krรกlovรฉ, Charles University in Prague, Sokolska Street 581, Hradec Krรกlovรฉ 50005, Czech Republic

Received 10 July 2007; Accepted 31 October 2007

Academic Editor: Freek J. Zijlstra

Copyright © 2008 Martina Kolackova et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. Activation of innate immunity cells is inseparably linked to cardiac surgical operation. The aim of this study was to assess the kinetics in the expression of receptor for Fc part of IgG, Fc ๐›พ RI (CD64), and scavenger receptor CD163 on peripheral blood cells of cardiac surgical patients and to examine the effect of cardiac bypass as a separable influence on the systemic acute inflammatory response. Methods. Forty patients, twenty in each group, were randomly assigned to CABG surgery performed either with “on-pump” or without “off-pump” cardiopulmonary bypass. Standardized quantitative flow cytometry method was used to determine the expression of surface markers. Results. The density of CD64 molecule on monocytes reached maximum on the 1st postoperative day ( ๐‘ƒ < . 0 0 1 ) whereas the peak for CD64 molecule expression on granulocytes was postponed to the 3rd postoperative day ( ๐‘ƒ < . 0 0 1 ). The expression of CD163 scavenger molecule on monocytes reached maximum on the 1st postoperative day ( ๐‘ƒ < . 0 0 1 ). The density of CD163 molecule on monocytes on the 1st postoperative day is significantly higher in “on-pump” patients in comparison with “off-pump” patients ( ๐‘ƒ < . 0 0 1 ). Conclusion. In cardiac surgical patients the expression of activation marker Fc ๐›พ R1 (CD64) on monocytes is increased earlier in comparison with granulocytes in both “on-pump” and “off-pump” patients. The expression of scavenger molecule CD163 on monocytes is significantly higher in “on-pump” patients.