Dexamethasone does not counteract the response of acute promyelocytic leukaemia cells to all-trans retinoic acid.
SourceBritish Journal of Haematology, 106, 1, (1999), pp. 107-10
Article / Letter to editor
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British Journal of Haematology
SubjectHematopoiesis and stem cell transplantation
Retinoic acid syndrome is a serious condition that may complicate the treatment of acute promyelocytic leukaemia patients. This syndrome may be treated effectively with high-dose corticosteroid therapy and, as a result, many patients with acute promyelocytic leukaemia receive dexamethasone at some point during treatment. We investigated whether dexamethasone would also antagonize the beneficial effects of retinoic acid. In t(15;17)-positive NB4 cells, dexamethasone did not affect the retinoic acid induced differentiation, normalization of PML-nuclear bodies or the induction of thrombomodulin mRNA. Finally, dexamethasone did not inhibit the anti-proliferative effect of retinoic acid but rather showed anti-proliferative activity itself.
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