Abstract
We investigated hemostatic parameters in a prospective study of 16 patients who received bone marrow transplants (BMT). We found a significant rise in the levels of fibrinogen, plasmin-α2 antiplasmin inhibitor complex, tissue-plasminogen activator·plasminogen activator inhibitor complex (t-PA·PAI), von Willebrand factor antigen, and thrombomodulin on day 14 after transplant compared with values before transplant. Protein C and thrombin-antithrombin III levels did not change significantly. No significant changes in prothrombin time ratio, activated partial thromboplastin time, or protein S were detected. Patients who had grades II–IV graft-versus-host disease (GVHD) (n = 6) showed a significantly higher level of t-PA·PAI on day 14 compared with those with grades 0–I GVHD (n = 10) (P = 0.0062). Three patients with grades II–IV GVHD developed thrombotic microangiopathy (TMA) on days 19, 19 and 62. In these patients, we noted significantly lower levels of fibrinogen (P = 0.0383), and significantly higher levels of t-PA·PAI (P = 0.0008) and thrombomodulin (P = 0.0001) on day 14 compared with those patients who did not develop TMA. These results suggest that prothrombotic states and endothelial damage may be caused by the conditioning regimen and/or acute GVHD during BMT; thrombomodulin values on day 14 post BMT may be useful in surveillance for TMA because of endothelial cell injury.
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Kanamori, H., Maruta, A., Sasaki, S. et al. Diagnostic value of hemostatic parameters in bone marrow transplant-associated thrombotic microangiopathy. Bone Marrow Transplant 21, 705–709 (1998). https://doi.org/10.1038/sj.bmt.1701151
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DOI: https://doi.org/10.1038/sj.bmt.1701151
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