Long-term exposure of cockroach Blaptica dubia (Insecta: Blaberidae) nymphs to magnetic fields of different characteristics: effects on antioxidant biomarkers and nymphal gut mass.
Perić Mataruga, Vesna
Article (Accepted Version)
© 2019 Taylor & Francis
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PURPOSE The main goal of this study was to analyze the long-term effects of static (SMF) and extremely low-frequency magnetic field (ELF MF) on nymphal gut mass and antioxidant biomarkers in this tissue of cockroach Blaptica dubia. MATERIALS AND METHODS One-month-old nymphs were exposed to magnetic field (MF) for 5 months in three experimental groups: control, exposure to SMF (110 mT) and exposure to ELF MF (50 Hz, 10 mT). RESULTS The gut masses of the MF groups were significantly lower when compared to control. Superoxide dismutase (SOD) and catalase (CAT) activities were markedly higher than for the control and the differences between the MF groups were statistically significant only for SOD. The applied MF had no effect on total glutathione (GSH) content. Glutathione reductase (GR) and glutathione S-transferase (GST) activities were significantly lower in both MF groups in comparison to the control. There was a significant difference between MF groups for GR activity. Principal Component Analysis (PCA) showed that CAT and GST were the main factors contributing to the differentiation of the control group from the treated experimental groups along PCA 1, and SOD and GR along PCA 2. PCA revealed clear separation between experimental groups depends on antioxidant biomarker response. CONCLUSION The applied magnetic fields could be considered a potential stressor influencing gut mass, as well as examined antioxidative biomarkers.
This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Radiation Biology on 19 Mar 2019, available online: http://www.tandfonline.com/10.1080/09553002.2019.1589017
Keywords:Static and extremely low-frequency magnetic fields; Antioxidant biomarkers; Gut mass; Blaptica dubia nymphs
Source:International Journal of Radiation Biology, 2019
- The effects of magnetic fields and other environmental stressors on the physiological responses and behavior of different species (RS-173027)