Cell kinetics after high dose cytosine arabinoside in patients with acute myelocytic leukemia |
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Authors: | L. P. Colly W. G. Peters M. W. Arentsen-Honders R. Willemze |
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Affiliation: | (1) Division of Hematology, Department of Medicine, Leiden University Medical Center, Building 1: C2R, P.O. Box 9600, NL-2300 Leiden, RC, The Netherlands |
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Abstract: | Summary In this study 10 patients with acute myelocytic leukemia (AML) each received a rapid intravenous injection of high dose cytosine arabinoside (HD Ara-C; 1 g/m2). Bone marrow aspirates were obtained before and after Ara-C administration to determine the percentage of cells in S-phase measured by flow cytometry. In 5 out of 10 cases synchronization of the leukemic cells in S-phase of the cell cycle was observed. However, the time of maximum synchronization turned out to be difficult to predict. Therefore, the strong correlation between percentage of cells in S-phase at diagnosis and the time of maximal accumulation of S-phase cells after Ara-C administration, as observed by others in childhood AML, could not be confirmed for adult AML patients. Although synchronization of AML cells after in vivo Ara-C administration could be demonstrated in at least half of the patients, the practical consequences are such that clinical application was hampered. |
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Keywords: | Cytarabine (Ara-C) Acute myelocytic leukemia Cell cycle kinetics |
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