Groups of Sprague-Dawley, Long-Evans, and Collip rats were exposed at 5-10 weeks of age to repeated high doses of X-radiation alone, urethane alone, or X-radiation plus urethane at the same time. Cumulative mortality and tumor incidence were measured until the animals reached 17 months of age. The final cumulative incidence of mammary tumors was highest in the Sprague-Dawley rats and lowest in the Collip rats, while the final cumulative incidence of skin tumors and fatal lymphatic disorders showed the opposite trend. X-Radiation and urethane together produced more lymphatic disorders but fewer skin and mammary tumors than expected from the sum of the effects of the two agents separately in Collip rats. However, these results were not always paralleled by those obtained in the other two strains of rats. As judged from the cumulative mortality curves for all three strains of rats tested, it would appear that the overall carcinogenic stimulus and life-shortening effect of X-radiation and urethane together was not greater than the sum of their separate effects at the dosage levels studied.
Skip Nav Destination
- Views Icon Views
- Share Icon Share
- Search Site
D. K. Myers; Effects of X-Radiation and Urethane on Survival and Tumor Induction in Three Strains of Rats. Radiat Res 1 February 1976; 65 (2): 292–303. doi: https://doi.org/10.2307/3574202
Download citation file:
Citing articles via
Commonalities Between COVID-19 and Radiation Injury
Carmen I. Rios, David R. Cassatt, Brynn A. Hollingsworth, Merriline M. Satyamitra, Yeabsera S. Tadesse, Lanyn P. Taliaferro, Thomas A. Winters, Andrea L. DiCarlo
Low-Dose Radiation Therapy (LDRT) for COVID-19: Benefits or Risks?
Pataje G. Prasanna, Gayle E. Woloschak, Andrea L. DiCarlo, Jeffrey C. Buchsbaum, Dörthe Schaue, Arnab Chakravarti, Francis A. Cucinotta, Silvia C. Formenti, Chandan Guha, Dale J. Hu, Mohammad K. Khan, David G. Kirsch, Sunil Krishnan, Wolfgang W. Leitner, Brian Marples, William McBride, Minesh P. Mehta, Shahin Rafii, Elad Sharon, Julie M. Sullivan, Ralph R. Weichselbaum, Mansoor M. Ahmed, Bhadrasain Vikram, C. Norman Coleman, Kathryn D. Held
Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light
Manuela Buonanno, Brian Ponnaiya, David Welch, Milda Stanislauskas, Gerhard Randers-Pehrson, Lubomir Smilenov, Franklin D. Lowy, David M. Owens, David J. Brenner