Total body irradiation and syngeneic marrow transplantation in an inbred rat model of acute myelogenous leukemia. [. gamma. rays; AML cell-marrow cell interactions in delayed relapse]
- Harvard Medicial School, Boston
While acute myelogenous leukemia (AML) occurs rarely in laboratory animals, over 20 model systems have been reported. One of these, AML of the inbred Wistar/Furth rat, has been shown to be pathophysiologically similar to human AML. Ten days after intravenous inoculation of 1.0 x 10/sup 6/ cells of a tissue culture grown clonal line, rats demonstrated peripheral blood leukemia, replacement of greater than 90% of the bone marrow with distinctive malignant myeloblasts and a syndrome of hypermuramidase (lysozyme) emia and muramidasuria. Total body irradiation (TBI) at 10 days after leukemia cell passage with a marrow lethal dose (950 rad, 140 rad/min, /sup 137/Cs source, 663 kV) followed by intravenous inoculation of 5.0 x 10/sup 8//kg viable syngeneic bone marrow cells produced transient complete remissions. Repopulation with transplanted marrow was detected along with increasing numbers of recognizable W/Fu AML cells in peripheral blood, marrow, and central nervous system. The delayed leukemia relapse in irradiated transplanted rats compared to irradiated non-transplanted controls suggests an interaction between surviving W/Fu AML cells and transplanted marrow. This model may be of value in studies designing a therapeutic interaction against AML by donor marrow in the chemotherapy, immunotherapy, and total body irradiated patient.
- OSTI ID:
- 7025358
- Journal Information:
- Int. J. Radiat. Oncol., Biol. Phys.; (United States), Vol. 4:5/6
- Country of Publication:
- United States
- Language:
- English
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BONE MARROW CELLS
TRANSPLANTS
IMMUNE REACTIONS
BIOLOGICAL RADIATION EFFECTS
IMMUNOSUPPRESSION
RADIOINDUCTION
IMMUNOTHERAPY
MYELOID LEUKEMIA
BIOLOGICAL MODELS
CESIUM 137
COMPARATIVE EVALUATIONS
ENDOXAN
GAMMA RADIATION
LETHAL IRRADIATION
RATS
WHOLE-BODY IRRADIATION
ALKALI METAL ISOTOPES
ALKYLATING AGENTS
ANIMAL CELLS
ANIMALS
ANTIMITOTIC DRUGS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
CESIUM ISOTOPES
CONNECTIVE TISSUE CELLS
DISEASES
DRUGS
ELECTROMAGNETIC RADIATION
EXTERNAL IRRADIATION
HEMIC DISEASES
IONIZING RADIATIONS
IRRADIATION
ISOTOPES
LEUKEMIA
MAMMALS
NEOPLASMS
NUCLEI
ODD-EVEN NUCLEI
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
RODENTS
SOMATIC CELLS
THERAPY
VERTEBRATES
YEARS LIVING RADIOISOTOPES
560152* - Radiation Effects on Animals- Animals