http://www.cnr.it/ontology/cnr/individuo/prodotto/ID23881
Granulocyte- and monocyte-platelet adhesion index in coronary and peripheral blood after extracorporeal circulation and reperfusion (Articolo in rivista)
- Type
- Label
- Granulocyte- and monocyte-platelet adhesion index in coronary and peripheral blood after extracorporeal circulation and reperfusion (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/cyto.b.20157 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Sbrana S.; Buffa M.; Bevilacqua S.; Spiller D.; Parri M. S.; Gianetti J.; De Filippis R.; Clerico A. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- In: Cytometry, vol. 72B (3) pp. 215 - 222. Wiley Interscience, 2007. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Laboratory of Hematology and Flow Cytometry, CNR Institute of Clinical Physiology, Massa, Italy
Cardiac Surgery Department, CNR Institute of Clinical Physiology, Massa, Italy
Scuola Superiore S. Anna, Pisa, Italy (literal)
- Titolo
- Granulocyte- and monocyte-platelet adhesion index in coronary and peripheral blood after extracorporeal circulation and reperfusion (literal)
- Abstract
- Background: Neutrophil-granulocyte and mononuclear-cell functional changes occur during cardiopulmonary bypass and cardiovascular surgery. Leukocyte-platelet interaction, leading to generation of heterotypic co-aggregates, represents an amplification mechanism of local inflammatory response and tissue damage. Methods: Samples of 20 patients were drawn from coronary sinus before cardioplegia and after reperfusion, as well as from peripheral blood at 5 and 24 hours postoperatively. Granulocyte and monocyte expression of CD162, CD15s, CD18 and CD11b were quantified by flow cytometry at the different times. Parallel variations of leukocyte-platelet conjugates (percentages) and a derived (cell number-normalized) leukocyte-platelet adhesion index were measured using antibodies against CD45, CD14 and CD41a. The evaluation of platelet functional state was carried out using antibodies against CD62P (P-selectin) and PAC-1. Results: Monocyte and granulocyte cell number increased in coronary blood at reperfusion and in peripheral blood post-operatively. A different course characterized the changes of the leukocyte-platelet adhesion index with respect to the variations of circulating leukocyte-platelet co-aggregates . Leukocyte molecules expression showed no significant variations for CD15s on both leukocyte subsets, while a significant up-modulation for CD162 was observed on monocytes at 24 hours after extracorporeal circulation (P=0.0002), and for CD11b on granulocytes at 5 hours post-operatively (P=0.033). A loss of CD162 expression was observed at reperfusion (P=0.0038) on granulocytes, associated to a down-modulation of CD18 (P=0.0033) and CD11b (P=0.0184) in peripheral blood at 24 hours. No significant up-regulation of platelet activatory molecules was found at reperfusion, as well as post-operatively, when compared with the before-cardioplegia derived data. Conclusions: The variations of a normalized leukocyte-platelet adhesion index seem to reflect the leukocyte-platelet functional interaction more accurately than the measurements of cellular conjugates. The absence of platelet activation suggests that the leukocyte membrane modifications play a main role in controlling the formation and stability of heterotypic leukocyte-platelet co-aggregates after cardiac surgery with extracorporeal circulation. (literal)
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