caa a22 4500 477061907 CHVBK 20180405111403.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00181662 doi (NATIONALLICENCE)springer-10.1007/BF00181662 Effect of thoracotomy and cardiopulmonary bypass on activated platelet and neutrophil dynamics and platelet emboli in a pig model [Elektronische Daten] [Mrinal Dewanjee, Victor Belinskiy, Jamie Holland, Mansoor Kapadvanjwala, Shu Wu, Stana Novak, Li-Chien Hsu, Juan Sanchez, Sumit Dewanjee, Aldo Serafini, Robert Duncan, George Sfakianakis] The effects of thoracotomy and components of extracorporeal circuits on dynamics of platelets and neutrophils were quantified with autologous In-111-labeled platelets (INPLT) and neutrophils (INN) during cardiopulmonary bypass (CPB) operations in Yorkshire pigs. Cardiopulmonary bypass was carried out with a hollow-fiber oxygenator and an arterial filter in 48 pigs (30-35 kg); 12 unoperated controls for platelets and neutrophils; 12 sham operated controls; 12 with 180 minutes of CPB with platelets and neutrophils; 12 with 90 minutes of CPB and 90 minutes of reperfusion at 2.5-3.5 one/min. Platelets and neutrophils were labeled with In-111 tropolone and were injected intravenously: platelets at 24 hours and neutrophils at 15 minutes before CPB. All pigs were systemically heparinized [activated coagulation time (ACT) > 400 seconds]; CPB was instituted with a roller pump, oxygenator (OX; Bentley Univox, 1.8 m2), and arterial filter (AF; 0.025 m2) for durations of 180 minutes and 90 minutes of bypass, followed by 90 minutes of reperfusion. The kinetics and pooling of platelets and neutrophils were monitored by a Geiger probe. The adherent thrombi and neutrophils in the OX, AF, viscera, and brain were imaged with a gamma camera and were measured with an ion chamber and a gamma counter. The percentile distribution of labeled platelets and neutrophils expressed as the mean ± standard deviation of injected dose in eight groups was calculated and statistical analyses were performed (ANOVA and paired t-test). Sham operation alone increased platelet retention in the lung, heart, and brain significantly (p < 0.001) over that of unoperated pigs. Neutrophil margination to lung immediately after injection was high; CPB and reperfusion altered the distribution in blood, viscera, and connective tissues. During CPB, an equilibrium among single platelets, platelet thrombi, and emboli was reached in the blood, oxygenator, arterial filter, perfused organs, and tissues. After CPB, the pulmonary neutrophil retention increased significantly (p < 0.001). Reperfusion of 90 minutes following 90 minutes of CPB decreased the level of neutrophils and increased the level of platelets in the lung. Only a small amount of platelets and neutrophils was retained in the oxygenator and arterial filter. Neutrophil retention in the OX and AF was higher than that of platelets. The small amount of retained neutrophils in the heart, kidneys, and brain suggested that cytokines, rather than marginated neutrophils alone, may play a major role in inflammatory insult to these organs during and after CPB. OX thrombi increased with the time of CPB; AF thrombus in both groups was almost similar. During CPB, AF functioned minimally as a thrombus trap with a small percent of retained thrombi; reperfusion post-CPB did not change the amount. Thoracotomy alone has a significant effect on platelet and neutrophil kinetics, and on the subsequent effect of thrombus formation, embolization, and neutrophil margination in organs during the CPB procedure. Kluwer Academic Publishers, 1996 cardiopulmonary bypass nationallicence Yorkshire pigs nationallicence indium 111 nationallicence platelets nationallicence neutrophils nationallicence adherent thrombi nationallicence platelet emboli nationallicence marginated neutrophils nationallicence Dewanjee Mrinal Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut Belinskiy Victor Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut Holland Jamie Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut Kapadvanjwala Mansoor Department of Biomedical Engineering, University of Miami, School of Medicine, Miami, Florida aut Wu Shu Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut Novak Stana Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut Hsu Li-Chien Bentley Laboratories, Irvine, California aut Sanchez Juan Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut Dewanjee Sumit Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut Serafini Aldo Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut Duncan Robert Department of Epidemiology, University of Miami, School of Medicine, Miami, Florida aut Sfakianakis George Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut Journal of Thrombosis and Thrombolysis Kluwer Academic Publishers 3/3(1996-09-01), 195-208 0929-5305 3:3<195 1996 3 11239 https://doi.org/10.1007/BF00181662 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00181662 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dewanjee Mrinal Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Belinskiy Victor Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Holland Jamie Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Kapadvanjwala Mansoor Department of Biomedical Engineering, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Wu Shu Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Novak Stana Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Hsu Li-Chien Bentley Laboratories, Irvine, California aut NATIONALLICENCE 700 1- Sanchez Juan Department of Surgery, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Dewanjee Sumit Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Serafini Aldo Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Duncan Robert Department of Epidemiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 700 1- Sfakianakis George Department of Radiology, University of Miami, School of Medicine, Miami, Florida aut NATIONALLICENCE 773 0- Journal of Thrombosis and Thrombolysis Kluwer Academic Publishers 3/3(1996-09-01), 195-208 0929-5305 3:3<195 1996 3 11239 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer