Yulia Irnidayanti, Marlina Azzahra, Yanti Lusiyanti, Devita Tetriana, Darlina Yusuf
Background and Objective: Gamma irradiation induces genotoxicity, characterized by the formation of extra-nuclear bodies and left behind during the anaphase stage of cell division, often referred to as a micronucleus (MN). The present work aims to monitor exposure to ionizing radiation as a genotoxic agent in the lymphocytes of workers at radiation energy centers. Materials and Methods: The lymphocyte cytokinesis block micronucleus assay used and analyzed the correlation between the Nuclear Division Index (NDI), age, blood type and the number of micronuclei (MN). Blood samples were collected from 20 volunteers in heparin tubes, exposed to 2 Gy gamma rays and cultured in vitro. Results: A significant difference in the number of micronuclei between blood group A and blood groups A, B and AB. The Nuclear Division Index (NDI) value for lymphocytes of radiation energy center workers after gamma radiation was significant (1.74±0.1) but still within the normal range. Neither MN frequency nor NDI values correlated with age, but MN frequency showed a correlation with blood type. Conclusion: The gamma irradiation did not induce a cytostatic effect but proved genotoxic to the lymphocytes of radiation energy center workers. Notably, blood type A demonstrated higher sensitivity to gamma radiation. © 2024 Yulia Irnidayanti et al.
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Hasyim Asyarie Building, Rawamangun Muka, Jakarta, 13220, Indonesia; Research Center for Safety, Metrology and Nuclear Quality Technology, Building No. 720, KST B.J. Habibie Puspiptek St., Muncul, Setu, Banten, South Tangerang, 15314, Indonesia
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