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.

译文

目的: 本研究的主要目的是分析静态 (SMF) 和极低频磁场 (ELF MF) 对蟑螂Blaptica dubia该组织中若虫肠道质量和抗氧化剂生物标志物的长期影响。材料和方法: 一个月大的若虫在三个实验组中暴露于磁场 (MF) 5个月: 对照组,暴露于SMF (110  mT) 和暴露于ELF MF (50 hz hz,10 mt)。结果: 与对照组相比,MF组的肠道质量明显降低。超氧化物歧化酶 (SOD) 和过氧化氢酶 (CAT) 活性明显高于对照组,MF组之间的差异仅对SOD具有统计学意义。应用的MF对总谷胱甘肽 (GSH) 含量没有影响。与对照组相比,两个MF组的谷胱甘肽还原酶 (GR) 和谷胱甘肽S-转移酶 (GST) 活性均显着降低。MF组之间的GR活性存在显着差异。主成分分析 (PCA) 表明,CAT和GST是导致对照组与PCA 1处理的实验组之间的差异,而SOD和GR与PCA 2之间的差异的主要因素。PCA显示,实验组之间的明显分离取决于抗氧化剂生物标志物的反应。结论: 施加的磁场可以被认为是影响肠道质量的潜在压力源,以及被检查的抗氧化生物标志物。

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