title: In vitro study of cytotoxicity by U.V. radiation and differential sensitivity in combination with alkylating agents on established cell systems.
abstract: The effect of U.V. radiation or alkylating agents, such as actinomycin-D, cycloheximide and mitomycin-C (MMC), was studied on CHO, BHK and HeLa cells. U.V. radiation caused DNA ssb and dsb and were prevented by cycloheximide and actinomycin-D. MMC is known to be cytotoxic in CHO/BHK cells by forming free radical generation. MMC in combination with U.V. radiation enhanced DNA ssb & dsb in these cell types. However, HeLa cells were insensitive to U.V. radiation. This insensitivity to U.V. radiation could be ascribed to the presence of glutathione transferase which is absent in CHO/BHK cell line.
authors.affiliation: Department of Zoology, University School of Sciences, Gujarat University, Ahmedabad, India.
authors.forename: K
authors.initials: K
authors.lastname: Ramudu
mesh_terms: D000477:Alkylating Agents / Q000494:pharmacology*; D000818:Animals; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects / Q000528:radiation effects*; D003513:Cycloheximide / Q000494:pharmacology; D004249:DNA Damage; D003609:Dactinomycin / Q000494:pharmacology; D006367:HeLa Cells; D006801:Humans; D016685:Mitomycin; D008937:Mitomycins / Q000494:pharmacology; D014466:Ultraviolet Rays
chemical_list: D000477:Alkylating Agents; D008937:Mitomycins; D003609:Dactinomycin; D016685:Mitomycin; D003513:Cycloheximide