Verification of a dose rate-responsive dynamic equilibrium model on radiation-induced mutation frequencies in mice

Verification of a dose rate-responsive dynamic equilibrium model on radiation-induced mutation frequencies in mice
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小鼠辐射诱发突变频率的剂量率响应动态平衡模型的验证

DOI:
10.1080/09553002.2019.1569772
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发表时间:
2019
影响因子:
2.6
通讯作者:
Bando Masako
Bando Masako
中科院分区:
医学3区
文献类型:
--
作者:
Tsunoyama Yuichi;Suzuki Kazuyo;Masugi-Tokita Miwako;Nakajima Hiroo;Manabe Yuichiro;Wada Takahiro;Bando Masako

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目的:建立了人工辐射引起的剂量率依赖性突变频率增量的数学模型(WAM模型)。在该模型中,定义了生物体中处于动态平衡状态的突变细胞池。我们验证了WAM预测小鼠突变频率的准确性。材料和方法:将WAM模型计算的理论值与橡树岭国家实验室(ORNL)大鼠遗传学项目的实验值进行比较。结果:急性和慢性辐照条件下的理论值与实验值基本吻合。而在0.8 R/min的剂量率下,慢性状态的理论值明显高于实验值。在WAM假设中,当从暴露结束到开始交配的时间延长两周时,这种不一致可以最小化。结论:通过实验数据与理论数据的比较,证实了小鼠WAM模型的确定性,并表明遗传影响随剂量率的变化而变化。
Purpose:We have proposed a mathematical model (WAM model) expressing increment of the dose-rate dependent mutation frequency caused by artificial radiations. In this model, it is defined that the pool of mutant cells in dynamic equilibrium in organisms. We verified the accuracy of the WAM prediction of mutation frequency in mice.Materials and methods:The theoretical values calculated by the WAM model were compared with the experimental values obtained from the large mouse genetics program at the Oak Ridge National Laboratory (ORNL).Results:Most of all the theoretical values in acute and chronic irradiation conditions nearly coincided with the experimental values. However, the theoretical value of the chronic conditions at the dose-rate of 0.8 R/min was significantly higher than its experimental value. This discordance was able to be minimized in the WAM assumption, when the period from the end of exposure to start mating was two weeks longer.Conclusions:As a result of comparison between experimental and theoretical data, the certainty of the WAM model was confirmed in mice and it was shown that the genetic influence varies depending on the dose-rate.
X 射线诱导新生雄性小鼠的特异性位点突变率。
DOI: --
发表时间: 1973
期刊: Mutation research
影响因子: --
作者:
P. Selby
通讯作者: P. Selby
雌性小鼠的突变频率和女性辐射遗传危害的估计。
DOI: 10.1073/pnas.74.8.3523
发表时间: 1977
影响因子: 11.1
作者:
W. Russell
通讯作者: W. Russell
老鼠之家:ORNL 老鼠遗传学计划的简史,1947-2009 年。
DOI: 10.1016/j.mrrev.2013.08.003
发表时间: 2013
期刊: Mutation research
影响因子: --
作者:
L. B. Russell
通讯作者: L. B. Russell
奇怪的光芒:辐射的故事。
DOI: 10.1093/rpd/ncw278
发表时间: 2016
影响因子: 1
作者:
R. Alexakhin
通讯作者: R. Alexakhin
DOI: 10.1101/sqb.1951.016.01.024
发表时间: 1951-01-01
期刊: COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY
影响因子: --
作者:
RUSSELL, WL
通讯作者: RUSSELL, WL