Objective: In this study, our aim is to investigate the possible protective effects of melatonin on potential damage caused by 2600 MHz radiofrequency (RF) radiation exposure on epididymis.Materials and Methods: 36 Wistar Albino male rats were divided into six groups. Group 1: Control, Group 2: Sham Control (mirror of RF exposure), Group 3: Sham Melatonin (mirror of RF exposure and melatonin injection), Group 4: Melatonin (melatonin injection), Group 5: RF (2600 MHz RF exposure), Group 6: RF and Melatonin (2600 MHz RF exposure and melatonin injection). During the experiment, body weights were measured and at the end of the 30-day experimental period, epididymis tissues were collected and examined with Hematoxylin-Eosin.Results: Epididymis was distinguished in normal histological appearance in the Control, Sham Control, Sham Melatonin and Melatonin groups. In the RF group, some structural degenerations were observed such as irregular tubule profile, deterioration and vacuolization in epithelium, loss of stereocilia, seperation in lateral and basal junctions of epithelium and immature sperm formation. In the RF and Melatonin group, the general histological appearance was found to be similar to the control groups except for some continuing degenerations.
Conclusion:Taken together, 2600 MHz RF radiation exposure caused some structural degenerations on epididymis and melatonin administration provided therapeutic effects on these degenerations.
The debate on the biological effects of radiofrequency radiation (RFR) still continues due to differences in the design of studies (frequency, power density, specific absorption rate [SAR], exposure duration, cell, tissue, or animal type). The current study aimed to investigate the effects of 2,600 MHz RFR and melatonin on brain tissue biochemistry and histology of male rats. Thirty-six rats were divided into six groups randomly: cage-control, sham, RFR, melatonin, sham melatonin, and RFR melatonin. In RFR groups, animals were exposed to 2,600 MHz RFR for 30 days (30 min/day, 5 days/week) and the melatonin group animals were subcutaneously injected with melatonin (7 days/week, 10 mg/kg/day) for 30 days. SAR in brain gray matter was calculated as 0.44 and 0.295 W/kg for 1 and 10 g averaging, respectively. RFR exposure decreased the GSH, GSH-Px, and SOD levels and increased the MPO, MDA, and NOx levels (P < 0.005) significantly. RFR exposure also led to an increase in structural deformation and apoptosis in the brain tissue. This study revealed that exogenous high-dose melatonin could reduce these adverse effects of RFR. Limiting RFR exposure as much as possible is recommended, and taking daily melatonin supplements may be beneficial. Bioelectromagnetics.
There is a relationship between a person’s diet and the development and prevention of some cancers. Carotenoids are found as various natural pigments in many fruits and vegetables. Studies on carotenoids and their potential roles in carcinogenesis are increasing in importance day by day. In this study, we aimed to determine the cytotoxic and genotoxic effects of capsanthin, a carotenoid compound, in human prostate cancer cell lines.
After different concentrations of capsanthin were applied to human prostate cancer cell lines (LNCaP and PC-3), the effects of the compound on cell viability were determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test. The single-cell gel electrophoresis (Comet) assay was then used to reveal the genotoxic effects of probable cytotoxic dosages on cell DNA. After the treatments, apoptotic cell death levels were determined by Tunel staining. At high concentrations, capsanthin dramatically reduced PC-3 and LNCaP cell viability (p<0.05). In addition, capsanthin caused DNA damage and apoptotic cell death in the prostate cancer cells. The results show that capsanthin reduces cell viability by causing genotoxicity in prostate cancer cells.
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