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Title: Activated platelets and leukocyte activations in young patients with β-thalassemia/HbE following bone marrow transplantation
Authors: Phatchanat Klaihmon
Surapong Lertthammakiat
Usanarat Anurathapan
Samart Pakakasama
Nongnuch Sirachainan
Suradej Hongeng
Kovit Pattanapanyasat
Faculty of Medicine, Ramathibodi Hospital, Mahidol University
Faculty of Medicine, Siriraj Hospital, Mahidol University
Keywords: Medicine
Issue Date: 1-Sep-2018
Citation: Thrombosis Research. Vol.169, (2018), 8-14
Abstract: © 2018 Bone marrow transplantation (BMT) is the only curable option for thalassemia major, β-thalassemia/HbE. However, some patients still have the risk of hypercoagulable complications. We used a whole blood flow cytometric analysis to measure the circulating microparticle (MP) levels, activated platelets, and leukocyte-platelet aggregates in 59 young β-thalassemia/HbE patients compared with 20- and 28-matched healthy and patients receiving regular blood transfusion (RT), respectively. Results from the studies showed that blood samples from BMT group contained a significantly higher numbers of circulating MPs originated from platelets (ann-V + CD41a + ), leukocyte (ann-V + CD45 + ) and endothelial cells (ann-V + CD146 + ) when compared to samples from healthy subjects and RT patients. In contrast, the percentages of activated/procoagulant platelets (CD62P and CD142 expressing platelets) were decreased in BMT group. In addition, monocytes forming microaggregates were the major population among other leukocyte-platelet complexes. Different patterns of CD11b, CD62P and CD142 expression on platelet-leukocyte microaggregate surface were also found. These data suggest that circulating MPs together with leukocyte-platelet aggregates may be responsible, in part, in pathogenesis of hypercoagulable state in β-thalassemia/HbE patients who undergone BMT.
ISSN: 18792472
Appears in Collections:Scopus 2018

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