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V N Gerasimenko

Publications and source records attributed to V N Gerasimenko.

80 records · Page 5Linked to original sources
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[Cytogenetic effects in exposure to high-energy charged particles].

The cytogenetic effects of irradiation were investigated in the bone marrow and corneal epithelium of mice, human white blood cells, and Stamm V79-4 cells of Chinese hamsters exposed to protons with E=9.2 GeV, deutons and helium ions with E=4.6 GeV/nuclon. It was demonstrated that with an increase in the irradiation dose the number of aberrant cells and chromosome aberrations grew. A high yield of exchange type aberrations was found. The proliferative activity of cells of bone marrow decreased and its depletion occurred. The RBE coefficients of high-energy particles varied from 1.3 to 2.7 in relation to the cell type and parameters measured.

Animals↗
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[Action of protons with 25 and 50 MeV energies on the chromosomes of human peripheral blood lymphocytes in vitro].

The frequency and type of chromosomal abberations in human lymphocytes induced by 25, 50, 645 MeV protons and 200 kv x-rays were studied. It was shown that the yield of one-hit acentric fragments increased linearly and that of double-break aberrations increased exponentially with the irradiation dose. It was demonstrated that under the influence of radiations with high linear energy transfer the number of paired fragments increased and that of dicentrics and rings decreased. The test of total yield of chromosomal aberrations and their specific types helped to derive coefficients of relative biological effectiveness of the above irradiations. There was a quantitative correlation between the dose and yield of individual aberration types. This suggests that lymphocytes can be used as a biological dosimeter for dose measurement.

Cells, Cultured↗