PMID- 9335367 OWN - NLM STAT- MEDLINE DCOM- 19980202 LR - 20190831 IS - 0160-564X (Print) IS - 0160-564X (Linking) VI - 21 IP - 10 DP - 1997 Oct TI - Phenotypic alterations in circulating monocytes induced by open heart surgery using heparinized and nonheparinized cardiopulmonary bypass systems. PG - 1091-7 AB - In this study of 31 patients with coronary bypass surgery, we used flow cytometry to compare heparin-coated and noncoated cardiopulmonary bypass systems on leukocyte activation. We found significant differences between the groups during bypass, with activation of the complement system, measured as elevated levels of C3a desArg, upregulation of granulocyte beta2 integrin (CD11b), and a loss of circulating monocytes when noncoated systems were used. In both groups an early increase in the monocyte cell surface CD62L expression was obvious while the percentage of human leukocyte antigen (HLA)-DR positive monocytes did not alter. The morning after the operation, leukocytosis was present, together with a highly significant reduction in the monocyte expression of CD11b and HLA-DR, indicating the recruitment to the peripheral blood of cells with altered phenotypes. This alteration in phenotype on potent inflammatory cells may be one part of the impaired function of the immunological system reported after major surgery. FAU - Ljunghusen, O AU - Ljunghusen O AD - Department of Medical Microbiology and Immunology, University Hospital, Linkoping, Sweden. FAU - Cederholm, I AU - Cederholm I FAU - Lundahl, J AU - Lundahl J FAU - Nilsson, B AU - Nilsson B FAU - Olin, C AU - Olin C FAU - Sjogren, F AU - Sjogren F FAU - Stendahl, O AU - Stendahl O LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - Artif Organs JT - Artificial organs JID - 7802778 RN - 0 (Anaphylatoxins) RN - 0 (Fibrinolytic Agents) RN - 0 (HLA-DR Antigens) RN - 0 (Macrophage-1 Antigen) RN - 0 (complement C3a, des-Arg-(77)-) RN - 126880-86-2 (L-Selectin) RN - 80295-42-7 (Complement C3a) RN - 9005-49-6 (Heparin) SB - IM MH - Adult MH - Aged MH - Anaphylatoxins/analysis MH - Cardiopulmonary Bypass/*standards MH - Complement Activation/drug effects/genetics MH - Complement C3a/analogs & derivatives/analysis MH - Female MH - Fibrinolytic Agents/administration & dosage/*pharmacology MH - Flow Cytometry MH - Gene Expression Regulation/drug effects/genetics MH - Granulocytes/drug effects/immunology MH - HLA-DR Antigens/*blood MH - Heparin/administration & dosage/*pharmacology MH - Humans MH - L-Selectin/blood/genetics MH - Lymphocyte Activation/*drug effects MH - Macrophage-1 Antigen/blood MH - Male MH - Middle Aged MH - Monocytes/*drug effects/immunology MH - Phenotype MH - Up-Regulation EDAT- 1997/10/23 00:00 MHDA- 1997/10/23 00:01 CRDT- 1997/10/23 00:00 PHST- 1997/10/23 00:00 [pubmed] PHST- 1997/10/23 00:01 [medline] PHST- 1997/10/23 00:00 [entrez] AID - 10.1111/j.1525-1594.1997.tb00448.x [doi] PST - ppublish SO - Artif Organs. 1997 Oct;21(10):1091-7. doi: 10.1111/j.1525-1594.1997.tb00448.x.