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Radiation and Environmental Biophysics

, Volume 46, Issue 2, pp 131–135 | Cite as

Peculiarities of the effect of low-dose-rate radiation simulating high-altitude flight conditions on mice in vivo

  • S. I. Zaichkina
  • O. M. Rozanova
  • G. F. Aptikaeva
  • A. Kh. Akhmadieva
  • E. N. Smirnova
  • S. P. Romanchenko
  • N. P. Sirota
  • O. A. Vachrusheva
  • V. N. Peleshko
Proceedings of the 4th IWSRR

Abstract

In the present work, the effect of a low-dose rate of high-LET radiation in polychromatic erythrocytes of mice bone marrow was investigated in vivo. The spectral and component composition of the radiation field used was similar to that present in the atmosphere at an altitude of about 10 km. The dose dependence, adaptive response, and genetic instability in the F1 generation born from males irradiated under these conditions were examined using the micronucleus test. Irradiation of the mice was performed for 24 h per day in the radiation field behind the concrete shield of the Serpukhov accelerator. Protons of 70 GeV were used over a period of 15–31 days, to accumulate doses of 11.5–31.5 cGy. The experiment demonstrated that irradiation of mice in vivo in this dose range leads to an increase in cytogenetic damage to bone marrow cells, but does not induce any adaptive response. In mice pre-irradiated with a dose of 11.5 cGy, an increase in sensitivity was observed after an additional irradiation with a dose of 1.5 Gy. The absence of an adaptive response suggests existence of genetic instability.

Keywords

Adaptive Response Chromosome Aberration Challenging Dose Cytogenetic Damage Aircraft Flight 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This study was supported by the Russian Academy of Sciences (grant FSM-2006).

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • S. I. Zaichkina
    • 1
  • O. M. Rozanova
    • 1
  • G. F. Aptikaeva
    • 1
  • A. Kh. Akhmadieva
    • 1
  • E. N. Smirnova
    • 1
  • S. P. Romanchenko
    • 1
  • N. P. Sirota
    • 1
  • O. A. Vachrusheva
    • 1
  • V. N. Peleshko
    • 2
  1. 1.Institute of Theoretical and Experimental BiophysicsPushchinoRussia
  2. 2.Institute of High Energy PhysicsProtvinoRussia

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