The Effects of a Fractionated Gamma Irradiation on Life Shortening and Disease Incidence in BALB/c Mice

J.R. Maisin, André Wambersie, G. B. Gerber, G. Mattelin, M. Lambiet-Collier, John Gueulette

Radiation Research · 1983 · 27 citations · 17 references

Concepts

Abstract

BALB/c male mice (12 weeks old) were exposed to a single or fractionated exposure of 137Cs gamma rays. The fractionated dose was split into 10 equal doses delivered at an interval of 1 day. The causes and possible causes of spontaneous death were ascertained by autopsy and histological examination, and the data were treated by competing risk analysis. Life shortening followed a linear dose dependency and was about the same for fractionated (38.1 +/- 3.1 days/Gy) as for single (46.2 +/- 4.3 days/Gy) exposure. Death from tumor disease was enhanced and that from nonstochastic lung and kidney diseases was reduced after fractionated compared to single exposure.

References

17