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Micronucleus assay and lymphocyte mitotic activity in risk assessment of occupational exposure to microwave radiation
1Institute for Medical Research and Occupational Health, Zagreb, Croatia. vgaraj@mimi.imi.hr
Abstract:
The effects of radiofrequency electromagnetic radiation (RFR) on the cell kinetics and genome damages in peripheral blood lymphocytes were determined in lymphocytes of 12 subjects occupationally exposed to microwave radiation. Results showed an increase in frequency of micronuclei (MN) as well as disturbances in the distribution of cells over the first, second and third mitotic division in exposed subjects compared to controls. According to previous reports micronucleus assay can serve as a suitable indicator for the assessment of exposure to genotoxic agents (such as RFR) and the analysis of mitotic activity as an additional parameter for the efficient biomonitoring.
Insights
Occupational exposure to radiofrequency electromagnetic radiation (RFR) increased genome damage, indicated by micronuclei (MN), and disrupted cell division in peripheral blood lymphocytes. This suggests RFR is a genotoxic agent requiring biomonitoring.
Area of Science:
- Environmental Health
- Cell Biology
- Genetics
Background:
- Radiofrequency electromagnetic radiation (RFR) is prevalent in modern workplaces.
- Potential health risks associated with occupational RFR exposure require investigation.
- Understanding RFR's impact on cellular processes is crucial for risk assessment.
Purpose of the Study:
- To evaluate the genotoxic effects of occupational RFR exposure on human lymphocytes.
- To assess the impact of RFR on cell kinetics and mitotic activity.
- To determine the utility of micronucleus (MN) assay and mitotic activity analysis for RFR biomonitoring.
Main Methods:
- Analysis of peripheral blood lymphocytes from 12 occupationally RFR-exposed subjects and controls.
- Assessment of genome damage using the micronucleus (MN) assay.
- Evaluation of cell kinetics by analyzing cell distribution across the first, second, and third mitotic divisions.
Main Results:
- Exposed subjects showed a significant increase in the frequency of micronuclei (MN) compared to controls.
- Disturbances in the distribution of cells across mitotic divisions (1st, 2nd, 3rd) were observed in exposed individuals.
- The findings indicate RFR exposure induces genotoxicity and affects cell proliferation.
Conclusions:
- Occupational exposure to RFR can cause genome damage and alter cell kinetics in peripheral blood lymphocytes.
- The micronucleus (MN) assay is a suitable indicator for assessing genotoxic exposure to RFR.
- Mitotic activity analysis provides an additional valuable parameter for effective RFR biomonitoring.
