Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ru)

L. V. Avdeeva¹, T. A. Evstyukhina², V. K. Koltover^1,*, V. G. Korolev², Y. A. Kutlakhmedov<sup>3

1</sup> Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
² Petersburg Institute of Nuclear Physics, NRC “Kurchatov Institute”, Gatchina, Leningrad Region, Russia
³ Institute of Cell Biology and Genetic Engineering, National Academy of Sciences of Ukraine, Kyiv, Ukraine

^*Corresponding author. E-mail address: koltover@icp.ac.ru;

Abstract: Herein we present the results of studying the effects of different isotopes of magnesium, magnetic ²⁵Mg and nonmagnetic ²⁴Mg, upon the post-radiation recovery of yeast cells, S. cerevisiae, irradiated by short-wave UV light (240 - 260 nm) or ionizing radiation (300 Gy). The recovery process of the cells enriched with the magnetic ²⁵Mg proceeds two times faster than the post-radiation recovery of the cells, enriched with the nonmagnetic ²⁴Mg. After gamma-irradiation, the fraction of the irreversible damages in the cells enriched with ²⁵Mg was 50 - 60 % less than in the cells enriched with ²⁴Mg. Thus, the magnetic isotope effect has been detected, i.e. – the acceleration of post-radiation recovery of the cells by the magnetic isotope’s nuclear spin of magnesium (nuclear spin catalysis). Obtained results demonsrate the fundamental possibility of creating new radioprotectors and radiomitigators based on stable magnetic isotopes.

Keywords: post-radiation recovery, magnetic-isotope effect, nuclear spin catalysis, radioprotectors, radiomitigators, yeast cells, magnesium, reliability, robustness.

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