The aim of this study was to evaluate the possible effects of a 50 Hz electric field on brain tissue and the positive effects of juglone (5-hydroxy-1,4-naphthoquinone) antioxidant activity, using the immunohistochemical technique on male Wistar-Albino rats. The effects on blood tissue were also examined using biochemical, physiological and comet methods. Animals were randomly divided into three groups (eight in each group): group I: control, group II: electric field, group III: 50 Hz electric field + juglone (5-hydroxy-1,4-naphthoquinone)/300 ppm. Juglone was applied per day by gavage over 30 days. At the end of the experimental procedure, animals were sacrificed and brain tissue was subjected to routine histologic and immunohistochemical processes. As a result of histophatological examination, the brain tissue of rats with 50 Hz electric field exposure showed severe histopathological changes. The differences between groups were statistically significant according to total comet score (p = 0.001). For the antioxidant parameters on the blood, SOD activity in the electric field group was significantly higher among the other groups, although we did not find significant differences in MDA, CAT activity level.

Purpose: The increase in the medical and industrial uses of radiation in the last century has caused people to be exposed to higher doses of radiation. Although the harms of high-dose radiation on human health are known, the effects of low-dose radiation on health have not yet been fully elucidated. In this study, we aimed to investigate DNA damage in lymphocytes in patients with lung, pleura/thoracic wall masses planned for percutaneous thoracic mass biopsy with computed tomography (CT). Methods: Sixteen patients referred to the Radiology Clinic of a public institution hospital with lung, pleura/thoracic wall masses and scheduled to undergo a CT-guided percutaneous biopsy were included in the study. All the biopsies were performed with a 128-slice CT device (Definition AS, Siemens Medical Solutions, Forchheim, Germany). Lymphocytes were analyzed using the comet assay in the venous blood samples taken from the patients before and after the biopsy procedure. DNA damage was quantitatively evaluated with the imaging analysis method. Results: In the CT analysis data of the study group, the mean scan distance was found to be 19.92±3.60 sec, the mean total milliampere-seconds was 807.43±304.51, and the mean dose-length product was 765.44±278.36 mGy.cm. The mean comet score was 200.50±40.54 for the cells that migrated before the procedure and 237.37±27.85 for those migrating after the procedure. The post-procedure comet scores significantly increased compared to the pre-procedure comet scores (p=0.038). Conclusion: Post-procedure DNA damage was detected in patients who underwent CT-guided percutaneous biopsy.