Platinum complexes as radiosensitizers of hypoxic mammalian cells. 1978

E B Douple, and R C Richmond

Cis-dichlorodiammineplatinum (II), or cis-PDD, has recently been shown to be a potent radiosensitizer of bacteria, particularly under conditions of acute hypoxia. This study extends this observation to include the radiosensitization of mammalian cell (V-79) by low concentrations of cis-PDD, cis-dichlorobis(aziridine) platinum (II), and the trans-isomer of PDD as measured from survival curve analysis. This radiosensitization was obtained at concentrations of 10 micrometer, 60 micrometer, and 100 micrometer for the cis-PDD, aziridine-platinum, and trans-isomer respectively. The corresponding drug toxicity survival levels were 8, 40 and 50%. Dose modification factors of around 1.3 to 1.4 were observed.

UI MeSH Term Description Entries
D009944 Organoplatinum Compounds Organic compounds which contain platinum as an integral part of the molecule. Compounds, Organoplatinum
D010100 Oxygen An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration. Dioxygen,Oxygen-16,Oxygen 16
D011838 Radiation-Sensitizing Agents Drugs used to potentiate the effectiveness of radiation therapy in destroying unwanted cells. Radiation Sensitizer,Radiosensitizing Agent,Radiosensitizing Agents,Agents, Radiation-Sensitizing,Radiation Sensitizers,Radiation Sensitizing Agents,Radiation-Sensitizing Drugs,Radiation-Sensitizing Effect,Radiation-Sensitizing Effects,Radiosensitizing Drugs,Radiosensitizing Effect,Radiosensitizing Effects,Agent, Radiosensitizing,Agents, Radiation Sensitizing,Agents, Radiosensitizing,Drugs, Radiation-Sensitizing,Drugs, Radiosensitizing,Effect, Radiation-Sensitizing,Effect, Radiosensitizing,Effects, Radiation-Sensitizing,Effects, Radiosensitizing,Radiation Sensitizing Drugs,Radiation Sensitizing Effect,Radiation Sensitizing Effects,Sensitizer, Radiation,Sensitizers, Radiation,Sensitizing Agents, Radiation
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002945 Cisplatin An inorganic and water-soluble platinum complex. After undergoing hydrolysis, it reacts with DNA to produce both intra and interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity of cisplatin correlates with cellular arrest in the G2 phase of the cell cycle. Platinum Diamminodichloride,cis-Diamminedichloroplatinum(II),cis-Dichlorodiammineplatinum(II),Biocisplatinum,Dichlorodiammineplatinum,NSC-119875,Platidiam,Platino,Platinol,cis-Diamminedichloroplatinum,cis-Platinum,Diamminodichloride, Platinum,cis Diamminedichloroplatinum,cis Platinum
D001388 Aziridines Saturated azacyclopropane compounds. They include compounds with substitutions on CARBON or NITROGEN atoms. Ethyleneimines,Azacyclopropanes, Saturated,Dimethyleneimines,Saturated Azacyclopropanes

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