The effect of modulation of glutathione cellular content on busulphan-induced cytotoxicity on hematopoietic cells in vitro and in vivo
| Autor: | M Edgren, Eva Hellström-Lindberg, Zuzana Hassan, Moustapha Hassan, Hans Hägglund, S Alsadi |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Myeloid
Antigens CD34 Bone Marrow Cells Pharmacology Colony-Forming Units Assay Mice chemistry.chemical_compound In vivo hemic and lymphatic diseases Animals Humans Medicine Buthionine sulfoximine Clonogenic assay Antineoplastic Agents Alkylating Busulfan Buthionine Sulfoximine Erythroid Precursor Cells Mice Inbred BALB C Transplantation Cell Death business.industry Hematology Glutathione Hematopoietic Stem Cells Acetylcysteine Haematopoiesis medicine.anatomical_structure chemistry Area Under Curve Toxicity Immunology Bone marrow business |
| Zdroj: | Bone Marrow Transplantation. 30:141-147 |
| ISSN: | 1476-5365 0268-3369 |
| Popis: | Busulphan is used in conditioning regimens prior to SCT. A relationship between exposure to busulphan, expressed as an area under the plasma concentration time curve (AUC), and effect and/or adverse effects, such as veno-occlusive disease (VOD), was reported. Exhaustion of glutathione (GSH) contributes to VOD and modulation of intracellular levels of GSH influences bulsulphan-induced toxicity in hepatocytes. Thus, increase of GSH might serve as prophylaxis against VOD. However, it should not interfere with the myeloablative effects of busulphan. We investigated the relationship between exposure to busulphan, and its in vitro toxicity to CD34(+) hematopoietic progenitors from volunteers using clonogenic assays. Busulphan inhibited colony formation by CD34(+) cells in an AUC-dependent manner. Myeloid progenitors were more sensitive than erythroid progenitors, expressed as 100% inhibition of colony formation (68.7 +/- 7.5 microg.h/ml and 140.3 +/- 35.7, respectively). The observed exposure corresponds to the total AUC obtained in patients treated with busulphan (1 mg/kg/day) for 4 days. Secondly, we studied the effect of modulation of GSH cellular levels on busulphan-induced toxicity in vitro in CD34(+) cells from volunteers, and in vivo in bone marrow cells from Balb/c mice. The intracellular concentration of GSH was increased or decreased by treatment with N-acetylcysteine or buthionine sulfoximine, respectively. Neither in vitro nor in vivo treatment with GSH modulators affected the hematological toxicity of busulphan. Thus, N-acetylcysteine would not interfere with the myeloablative effect of busulphan and therefore it is a potential candidate for VOD prophylaxis during busulphan-based conditioning regimens. |
| Databáze: | OpenAIRE |
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