mercaptopurine has been researched along with Preleukemia* in 2 studies
2 other study(ies) available for mercaptopurine and Preleukemia
| Article | Year |
|---|---|
A rare atypical myeloproliferative-disorder-like hemopathy with marked dysplasia, peripheral dominant myeloblast proliferation and extramedullary hematopoiesis was converted into typical acute myeloid leukemia with an interval of complete hematological re
We describe a patient with leukocytosis with all the stages of neutrophilic series, peripheral dominant myeloblast proliferation, marked dysplasia of myeloid and erythroid series, and extramedullary hematopoiesis of the lymph nodes. A cytogenetic study of the bone marrow cells showed normal karyotype, and molecular analysis of the leukemic cells showed negative for BCR-ABL by RT-PCR. After chemotherapy, the patient went into complete remission with a normal blood and bone marrow profile with no dysplasia. On relapse, the hematological findings showed a typical bone marrow dominant acute myeloid leukemia, with the leukemic cells having a chromosomal abnormality. The patient exhibited the combined features of myeloproliferative disorder, myelodysplastic syndrome, peripheral dominant myeloblast proliferation (so-called peripheral leukemia) and typical acute myeloid leukemia throughout the clinical course. This is thought to be a rare overlapping disease involving these distinct hematological conditions that do not usually occur in the same patient. Topics: Acute Disease; Antineoplastic Combined Chemotherapy Protocols; Bone Marrow; Cytarabine; Daunorubicin; Disease Progression; Hematopoiesis, Extramedullary; Humans; Leukemia, Myeloid; Male; Mercaptopurine; Middle Aged; Myelodysplastic Syndromes; Myeloproliferative Disorders; Prednisolone; Preleukemia; Remission Induction | 1998 |
Synergistic interaction between differentiation inducers and DNA synthesis inhibitors: a new approach to differentiation induction in myelodysplasia and acute myeloid leukaemia.
Numerous agents induce differentiation and maturation of neoplastic and dysplastic myeloid cells in vitro and some of these agents have been used with limited success in the treatment of patients with myelodysplastic syndromes (MDS) and myeloid leukaemias. We recently proposed that physiological and pharmacological agents which enhance differentiation and maturation in vitro act by two fundamentally different routes: (1) by hastening the progression through various differentiation/maturation steps; (2) by slowing proliferation (usually by inhibition of DNA synthesis). In order to test this thesis we looked for synergistic effects on differentiation using pairs of agents from the two groups in cultures of cells from myelodysplastic and acute myeloid leukaemia (AML) patients and from normal marrow donors. The results with three MDS, two AML and three normal samples show that combinations of differentiation inducing agents (retinoic acid, N-methylformamide) with DNA synthesis inhibitors (6-mercaptopurine, cytosine arabinoside and aphidicolin) produce a differentiation inducing effect equivalent to that of 10-100, or even 1000 fold higher concentrations of single agents. Myelotoxic effects in vitro were not synergistic. The use of these synergistic combinations should greatly enhance the usefulness of differentiation inducers in the therapy of MDS and myeloid leukaemia. Topics: Antineoplastic Combined Chemotherapy Protocols; Aphidicolin; Bone Marrow; Bone Marrow Diseases; Cell Differentiation; Cells, Cultured; Cytarabine; Diterpenes; DNA; Drug Synergism; Formamides; Humans; Leukemia, Myeloid, Acute; Mercaptopurine; Preleukemia; Syndrome; Tretinoin | 1985 |