Action of misonidazole on L5178Y-R and L5178Y-S cells. II. Cytotoxicity and radiosensitization under hypoxic conditions. 1981

E Niepokojczycka, and I Szumiel, and M Walicka

Misonizadole exerts an equal cytotoxic effect on L5178Y-R and L5178Y-S cells; 5 mM misonidazole sensitizes cells of both strains to a similar extent under hypoxic conditions: the effect of drug in 59% of the oxygen effect in L5178Y-R cells and 52% in L5178Y-S cells. It was previously reported that the amount of initial DNA damage determined by the alkaline unwinding technique is 1.3 times lower in irradiated hypoxic L5178Y-R cells than in L5178Y-S cells. Hence it seems that the drug ability to sensitize these cell strains does not depend on amount of initial DNA damage available for interaction. Although the examined L5178Y strains differ in radiosensitivity, their ability to repair oxygen and misonidazole-dependent cellular damage is similar.

UI MeSH Term Description Entries
D007940 Leukemia L5178 An experimental lymphocytic leukemia of mice. Lymphoma L5178,L5178, Leukemia,L5178, Lymphoma
D007942 Leukemia, Experimental Leukemia induced experimentally in animals by exposure to leukemogenic agents, such as VIRUSES; RADIATION; or by TRANSPLANTATION of leukemic tissues. Experimental Leukemia,Experimental Leukemias,Leukemia Model, Animal,Leukemias, Experimental,Animal Leukemia Model,Animal Leukemia Models,Leukemia Models, Animal
D008920 Misonidazole A nitroimidazole that sensitizes normally radio-resistant hypoxic cells to radiation. It may also be directly cytotoxic to hypoxic cells and has been proposed as an antineoplastic. Ro 07-0582,Ro 7-0582,alpha-(Methoxymethyl)-2-nitro-1H-imidazole-1-ethanol,Ro 07 0582,Ro 070582,Ro 7 0582,Ro 70582
D009593 Nitroimidazoles IMIDAZOLES having a nitro moiety. Nitroimidazole
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
D011836 Radiation Tolerance The ability of some cells or tissues to survive lethal doses of IONIZING RADIATION. Tolerance depends on the species, cell type, and physical and chemical variables, including RADIATION-PROTECTIVE AGENTS and RADIATION-SENSITIZING AGENTS. Radiation Sensitivity,Radiosensitivity,Sensitivity, Radiation,Tolerance, Radiation,Radiation Sensitivities,Radiation Tolerances,Radiosensitivities,Sensitivities, Radiation,Tolerances, Radiation
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
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
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
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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