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Long - term exposure of cockroach Blaptica dubia (Insecta: Blaberidae) nymphs to magnetic fields of different characteristics: Effects on antioxidant biomarkers and nymphal gut mass.

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Todorović D, Ilijin L, Mrdaković M, Vlahović M, Filipović A, Grčić A, Perić-Mataruga V · 2019

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Five months of magnetic field exposure significantly reduced gut mass and disrupted cellular antioxidant defenses in cockroaches, demonstrating biological stress responses.

Plain English Summary

Summary written for general audiences

Researchers exposed cockroach nymphs to magnetic fields for 5 months and found significant biological changes, including reduced gut mass and altered antioxidant enzyme activity. The magnetic fields (both static and extremely low frequency) acted as biological stressors, disrupting the insects' cellular defense systems that protect against oxidative damage. This demonstrates that long-term magnetic field exposure can cause measurable biological stress responses in living organisms.

Why This Matters

This study provides compelling evidence that magnetic fields can function as biological stressors, even in organisms far removed from humans. The 5-month exposure period is particularly significant because it demonstrates chronic effects rather than just acute responses. What makes this research especially relevant is that the extremely low frequency magnetic field exposure (50 Hz at 10 mT) is similar to the frequency of power lines and electrical systems we encounter daily, though at higher intensities. The disruption of antioxidant systems is concerning because these cellular defense mechanisms protect against oxidative stress, which is linked to aging, disease, and cellular damage. While we can't directly extrapolate from cockroaches to humans, this study adds to the growing body of evidence showing that magnetic fields can produce measurable biological effects across species.

Exposure Details

Magnetic Field
110 mG
Exposure Duration
5 months

Exposure Context

This study used 110 mG for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 110 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern rangeFCC limit is 18x higher than this level

Study Details

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.

One-month-old nymphs were exposed to magnetic field (MF) for 5 months in three experimental groups: ...

The gut masses of the MF groups were significantly lower when compared to control. Superoxide dismut...

The applied magnetic fields could be considered a potential stressor influencing gut mass, as well as examined antioxidative biomarkers.

Cite This Study
Todorović D, Ilijin L, Mrdaković M, Vlahović M, Filipović A, Grčić A, Perić-Mataruga V (2019). Long - term exposure of cockroach Blaptica dubia (Insecta: Blaberidae) nymphs to magnetic fields of different characteristics: Effects on antioxidant biomarkers and nymphal gut mass. Int J Radiat Biol. 2019 Mar 1:1-26. doi: 10.1080/09553002.2019.1589017.
Show BibTeX
@article{d_2019_long_term_exposure_of_475,
  author = {Todorović D and Ilijin L and Mrdaković M and Vlahović M and Filipović A and Grčić A and Perić-Mataruga V},
  title = {Long - term exposure of cockroach Blaptica dubia (Insecta: Blaberidae) nymphs to magnetic fields of different characteristics: Effects on antioxidant biomarkers and nymphal gut mass.},
  year = {2019},
  doi = {10.1080/09553002.2019.1589017},
  url = {https://www.tandfonline.com/doi/abs/10.1080/09553002.2019.1589017},
}
DOI: 10.1080/09553002.2019.1589017

Cited By (7 papers)

Quick Questions About This Study

Research shows magnetic fields can affect digestive systems. A 2019 study found cockroaches exposed to magnetic fields for 5 months had significantly reduced gut mass compared to unexposed insects, suggesting magnetic field exposure may disrupt normal digestive function in living organisms.
Yes, magnetic field exposure can alter antioxidant enzyme activity. The 2019 cockroach study found magnetic fields significantly increased some protective enzymes while decreasing others, indicating the body's antioxidant defense systems respond to magnetic field exposure as a biological stressor.
Long-term magnetic field exposure appears to cause biological stress responses. Research on cockroaches exposed to magnetic fields for 5 months showed measurable changes in gut mass and cellular defense systems, suggesting chronic exposure may disrupt normal biological functions.
Magnetic fields can act as biological stressors, affecting multiple body systems. A 2019 study documented reduced gut mass and altered antioxidant enzyme activity in insects after 5 months of exposure, demonstrating magnetic fields produce measurable biological changes in living organisms.
Magnetic fields trigger cellular stress responses by disrupting antioxidant defense systems. Research shows both static and extremely low frequency magnetic fields significantly alter protective enzyme activity, indicating cells recognize magnetic field exposure as a form of oxidative stress.