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- W2018947211 abstract "Summary. Antiangiogenesis agents are now being used in clinical trials to reduce the risk of recurrence of cancer. Several of these agents, however, are associated with thrombosis, especially when used in combination with chemotherapy. Antiangiogenesis and thrombosis are both endothelial-related activities, and we therefore evaluated one presumed antiangiogenesis agent (thalidomide) on intact cultured endothelial cells, and on cultured endothelial cells injured by preincubation with doxorubicin. We evaluated cell viability, caspase-3 activation, morphology of cells using light microscopy, and protease activated receptor-1 (PAR-l) expression. In our experiments, doxorubicin induced a dose- and incubation time-dependent and caspase-3-mediated apoptosis of endothelial cells. Thalidomide alone caused no changes in intact endothelial cells in terms of morphology, cell viability or activation of caspase-3. In contrast, when thalidomide was added to doxorubicin-injured endothelial cells, there was protection from cell death, increase in viability of endothelial cells, induction of differentiation and formation of neotubules. Doxorubicin reduced the expression of thrombin receptor, PAR-1, as evaluated by immunostaining and flow cytometry. Thalidomide did not alter PAR-1 expression in untreated cells but restored its expression reduced by doxorubicin. These findings suggest that thalidomide may be procoagulant, not by enhancing doxorubicin-mediated endothelial cell injury, but by altering the expression of PAR-1 on injured endothelium and resulting in endothelial dysfunction, which may explain hypercoagulability in patients treated with chemotherapy followed by thalidomide." @default.
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- W2018947211 date "2004-02-01" @default.
- W2018947211 modified "2023-10-18" @default.
- W2018947211 title "Thalidomide protects endothelial cells from doxorubicin‐induced apoptosis but alters cell morphology" @default.
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- W2018947211 doi "https://doi.org/10.1046/j.1538-7933.2003.00573.x" @default.
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