Abstract
The levels of large deletions in the mitochondrial DNA of workers at the Mayak Production Association (Mayak PA) who were exposed to external and combined occupational (external γ- and internal α-rays) radiation during the course of their duties were investigated. Peripheral blood-derived DNA samples were provided by the Radiobiological Human Tissue Repository of the Southern Urals Biophysics Institute (Russia). The samples were analyzed using long-extension PCR. The number of large-scale deletions in the mitochondrial DNA of workers who, in addition to external γ-radiation, were exposed to extra doses of irradiation due to incorporated 239Pu with a Pu body burden of 0.77–4.32 kBq, was 2.5-times lower compared to that of individuals who received only external γ-radiation. No significant gender-associated effects on the number of mitochondrial DNA deletions were detected among age-matched individuals.
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Original Russian Text © L.V. Malakhova, M.G. Lomaeva, M.L. Zakharova, E.N. Kirillova, S.N. Sokolova, V.N. Antipova, V.G. Bezlepkin, 2016, published in Biofizika, 2016, Vol. 61, No. 6, pp. 1236–1242.
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Malakhova, L.V., Lomaeva, M.G., Zakharova, M.L. et al. Mitochondrial DNA deletions in the peripheral blood of workers at the Mayak PA who were exposed to long-term combined effects of external γ- and internal α-radiation. BIOPHYSICS 61, 1026–1032 (2016). https://doi.org/10.1134/S0006350916060142
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DOI: https://doi.org/10.1134/S0006350916060142