| Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | Biology of Blood and Marrow Transplantation | ||||
| Publisher: | ELSEVIER SCIENCE INC | ||||
| Place of Publication: | NEW YORK | ||||
| Volume: | 15 | ||||
| Number of Issue or Book Chapter: | 5 | ||||
| Page Range: | pp. 537-546 | ||||
| Date: | 2009 | ||||
| Institutions: | Medicine > Lehrstuhl für Innere Medizin III (Hämatologie und Internistische Onkologie) | ||||
| Identification Number: |
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| Keywords: | VERSUS-HOST-DISEASE; BONE-MARROW-TRANSPLANTATION; ADHESION MOLECULES; FLOW CONDITIONS; IN-VITRO; VASCULAR ENDOTHELIUM; EXTRACELLULAR-MATRIX; BACTERIAL-ENDOTOXIN; PLATELET-ADHESION; COMPLICATIONS; Endothelial activation; Hematopoietic stem cell transplantation; Early complications | ||||
| Dewey Decimal Classification: | 600 Technology > 610 Medical sciences Medicine | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 67183 |
Web of ScienceAbstract
This study evaluated the relative impact of the intensity of the conditioning regimen and the alloreactivity in the endothelial dysfunction occurring after allogeneic hematopoietic stem cell transplantation (allo-HSCT). It involved a comparative analysis of the effect of incubating human umbilical vein endothelial cells (ECs) with serum samples from patients receiving autologous HSCT (auto-HSCT) ...
Abstract
This study evaluated the relative impact of the intensity of the conditioning regimen and the alloreactivity in the endothelial dysfunction occurring after allogeneic hematopoietic stem cell transplantation (allo-HSCT). It involved a comparative analysis of the effect of incubating human umbilical vein endothelial cells (ECs) with serum samples from patients receiving autologous HSCT (auto-HSCT) or unrelated donor allo-HSCT In both groups, blood samples were collected through a central line before conditioning (Pre), before transplantation (day 0), and at days 7, 14, and 21 after transplantation. Changes in the expression of EC receptors and adhesion proteins, adhesion of leukocytes and platelets under flow, and signaling pathways were analyzed. Endothelial activation and damage were observed in both groups, but with differing patterns. All markers of endothelial dysfunction demonstrated a progressive increase from day Pre to day 14 in the auto-HSCT group and exhibited 2 peaks of maximal expression (at days 0 and 21) in the allo-HSCT group. Both treatments induced a proinflammatory state (ie, expression of adhesion receptors, leukocyte adhesion, and p38 MAPK activation) and cell proliferation (ie, morphology and activation of ErK42/44). Prothrombotic changes (ie, von Willebrand factor expression and platelet adhesion) predominated after allo-HSCT, and a proapoptotic tendency (ie, activation of SAPK/JNK) was seen only in this group. These findings indicate that endothelial activation and damage after HSCT also occur in the autologous setting and affect macrovascular ECs. After the initial damage induced by the conditioning regimen, other factors, such as granulocyte colony-stimulating factor (G-CSF) toxicity, engraftment, and alloreactivity, may contribute to the endothelial damage seen during HSCT Further studies are needed to explore the association between this endothelial damage and the vascular complications associated with HSCT.
Metadata last modified: 19 Dec 2024 12:06
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