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자료유형
학술저널
저자정보
Kim, Jeong -Hee (Laboratory of Radiation Effect, Korea Cancer Center Hospital and Atomic Energy Research Institute) Lee, Kyung -Jong (Laboratory of Radiation Effect, Korea Cancer Center Hospital and Atomic Energy Research Institute) Cho, Chul -Koo (Laboratory of Radiation Effect, Korea Cancer Center Hospital and Atomic Energy Research Institute, Department of Therapeutic, Korea Cancer Center Hospital and Atomic Energy Research Ins) Yoo, Seong -Yul (Laboratory of Radiation Effect, Korea Cancer Center Hospital and Atomic Energy Research Institute, Department of Therapeutic, Korea Cancer Center Hospital and Atomic Energy Research In) Kim, Tae -Hwan (Laboratory of Electron Microscopy, Korea Cancer Center Hospital and Atomic Energy Research Institute) Ji, Young -Hoon (Department of Therapeutic, Korea Cancer Center Hospital and Atomic Energy Research Institute) Kim, Sung -Ho (Laboratory of Radiation Effect, Korea Cancer Center Hospital and Atomic Energy Research Institute)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제18권 제6호
발행연도
1995.1
수록면
410 - 414 (5page)

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Adaptive response induced by low dese .gamma.-ray irradiation in human cervical carcinoma cells was examined. Cells were exposured to low dose of .gamma.-ray irradiation in human cervical carcinoma cells was examined. Cells were exposured to low dose of .gamma.-ray (1-cGy) followed by high doses of r-ray irradiation (0,1,2,3,5,7 and 9Gy for chlnogenic assay or 1.5Gy for micronucleus assay) with various time intervals. Survival fractions of cells in both low dose-irradiated and unirrated groups were analyzed by clonogenic assay. Surviva fractions of low dose-irradiated in cell survival was maximum when low and high dose irradiation time interval was 4 hr. Frequencies of micronuclei which is an indicative of chromosome aberration were also enutained from survival fractions analyzed by clonogenic assay, maximum when low and high dose irradiation time interval was 4hr. Frequencies of micronuclei which is an indicative of chromosome aberration were also enumerated in both low dose-irradiated and unirradiated groups. In consiststent with the result obtained from survival fractions analyzed by clonogenic assay, maximum reduction in frquencies of micronuclei was observed when low dose radiation was given 4 hr prior to high response to subsequent high dose .gamma.-ray irradiation in human cervical carcinomal cells. Our data suggest that one of the possible mechanisms of adaptive response induced by low dose rediation is the increase in repair of DNA double strand breaks in low dose radiation-adapted cells.

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