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Radiosensitization of hypoxic tumor cells by cis- and trans-dichlorodiammineplatinum (II)

Conference · · Int. J. Radiat. Oncol., Biol. Phys.; (United States)
OSTI ID:5236214
 [1];
  1. Dartmouth-Hitchcock Medical Center, Hanover, NH
The effects of the chemotherapeutic agent cis-dischlorodiammineplatinum (II) or its trans isomer on tumor cell lethality were evaluated following administration of the drugs, alone, or in combination with x-irradiation. The tumor latency method was employed to assay tumor cell survival under in vivo growth conditions following treatment in vivo. Radiosensitization of hypoxic tumor cells was demonstrated by combinations of either complex with high doses of radiation. The results extend an effect observed in bacterial systems and cultured mammalian cells to include tumor cells treated in situ. However, therapeutic potentiation during more clinically relevant treatment protocols in air-breathing mice is probably the result of the platinum complexes inhibiting recovery processes following irradiation.
OSTI ID:
5236214
Conference Information:
Journal Name: Int. J. Radiat. Oncol., Biol. Phys.; (United States) Journal Volume: 5:8
Country of Publication:
United States
Language:
English

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