Induction of chromosomal aberrations and sister chromatid exchanges by alpha particles in density-inhibited cultures of mouse 10T1/2 and 3T3 cells.
Induction of chromosomal aberrations and sister chromatid exchanges by alpha particles in density-inhibited cultures of mouse 10T1/2 and 3T3 cells.
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在小鼠 10T1/2 和 3T3 细胞的密度抑制培养物中,α 粒子诱导染色体畸变和姐妹染色单体交换。
DOI:
10.1080/09553009014550321
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发表时间:
1990
影响因子:
2.6
通讯作者:
Little,JB
中科院分区:
文献类型:
--
作者:
Nagasawa,H;Robertson,J;Little,JB
We examined the dose—response relationships for the induction of cell killing, chromosomal aberrations and sister chromatid exchanges (SCE) by 220 kV X-rays and 5·3 MeV alpha particles from a238Pu source. The cells were irradiated in density-inhibited, confluent cultures. TheD0values for the X-ray and alpha particle survival curves were 1·7 Gy and 0·7 Gy, and the extrapolation numbers 2·5 and 1·0, respectively, for mouse 3T3 cells. Chromosomal aberrations increased linearly with dose for alpha-radiation and roughly with the square of dose for X-rays in 3T3 cells. At 37 per cent survival, 1·0 chromosomal aberration per cell was induced by X-rays and 1·7 per cell by alpha-radiation, but the fraction of cells without aberrations was similar. In confluent holding recovery experiments there was a 50 per cent reduction in X-ray-induced aberrations during the first 4 h of confluent holding. No decline in alpha-induced aberrations was observed with holding times up to 24 h. The dose—response relationship for the induction of SCE by X-rays increased linearly with doses up to 100 cGy in both 3T3 and 10T½ cells, then declined, reaching nearly background levels after 400 cGy. The induction of SCE increased rapidly in these cell lines with doses of 2·5–5·0 cGy of alpha-radiation, then declined. The relative biological effectiveness (RBE) was 15–25 for the induction of SCE by low doses (2·5–5·0 cGy) of alpha particles.
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影响因子:
3.4
作者:
J. Little;H. Nagasawa;A. Kennedy
通讯作者:
A. Kennedy
DOI:
10.1016/s0027-5107(75)80013-3
发表时间:
1975
期刊:
Mutation research
影响因子:
--
作者:
E. Solomon;M. Bobrow
通讯作者:
M. Bobrow
DOI:
--
发表时间:
1988
期刊:
International Journal of Radiation Biology and Related Studies in Physics Chemistry and Medicine
影响因子:
--
作者:
S. Aghamohammadi;D. T. Goodhead;J. R. Savage
通讯作者:
J. R. Savage
DOI:
10.1093/jnci/21.3.437
发表时间:
1958
期刊:
Journal of the National Cancer Institute
影响因子:
--
作者:
T. Hsu;Oleta Klatt
通讯作者:
Oleta Klatt
DOI:
10.1080/09553008514551651
发表时间:
1985
期刊:
International journal of radiation biology and related studies in physics, chemistry, and medicine
影响因子:
--
作者:
Nagasawa,H;Little,JB
通讯作者:
Little,JB