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Extracorporeal irradiation of the blood in a rat model for human acute myelocytic leukemia. Comparative evaluation of three treatment regimens with emphasis on cell compartment analysis

Journal Article · · Radiat. Res.; (United States)
DOI:https://doi.org/10.2307/3575419· OSTI ID:6442425
Results of three different regimens of extracorporeal irradiation of the blood (ECIB) are compared in a rat model for human acute myelocytic leukemia. The D/sub 0/ for x rays of leukemic cells in the blood was 68 cGy. The transit dose varied from 380 to 660 cGy. Evaluation was performed by follow-up of the number of peripheral leukemic cells and quantitative cell compartment analysis by measuring the distribution of infused /sup 51/Cr-labeled leukemic cells. Repeated sessions of ECIB proved far more effective in terms of cell depletion than one long session. Chromium-51 studies indicated that the sizes of the blood compartments and of the rapidly exchangeable tissue pool are markedly reduced. The more-sessile organ compartments are only slightly influenced. It appeared that the traffic of leukemic cells is subject to a regulatory mechanism. The more the peripheral compartment is depleted, the more cells are mobilized from the rapidly and slowly exchangeable tissue compartments.
Research Organization:
Radiobiological Inst., Rijswijk, Netherlands
OSTI ID:
6442425
Journal Information:
Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 85:3; ISSN RAREA
Country of Publication:
United States
Language:
English

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