Microglial Response to Inflammatory Stimuli Under Electromagnetic Field Exposure
Yssel Mendoza-Mari1, Marija Stojanovic1, Dan E Miulli2
1Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, USA.
Archives of Clinical and Biomedical Research
|August 26, 2025
Summary
Low frequency electromagnetic fields (EMF) enhance microglial cell survival and modulate inflammatory responses in a lab setting. EMF exposure also promotes phagocytic markers, suggesting potential therapeutic benefits for brain injuries.
Area of Science:
- Neuroscience
- Immunology
- Biophysics
Background:
- Microglial cells are crucial for brain immune surveillance and tissue homeostasis.
- Neuroinflammation, often seen in traumatic brain injury (TBI), disrupts this balance.
- Low frequency electromagnetic fields (EMF) show promise in modulating inflammatory responses.
Purpose of the Study:
- To investigate the effects of EMF on human microglial cells (HMC3) in an in vitro model of neuroinflammation.
- To assess EMF's impact on cell survival, migration, and M1/M2 phenotypic marker expression.
Main Methods:
- Human microglial cells (HMC3) were induced with tumor necrosis factor alpha (TNF-α).
- Cells were subsequently exposed to 2.5 Hz or 5 Hz EMF for 3 minutes.
- Cell survival, migration, and M1/M2 marker expression were evaluated at 6, 24, and 48 hours.
Main Results:
- EMF exposure increased the survival rate of cells treated with high-dose TNF-α.
- EMF significantly reduced the migration rate of TNF-α treated microglial cells.
- EMF promoted M1 and M2 phenotypic marker expression in a time-dependent manner, suggesting enhanced phagocytic capacity.
Conclusions:
- Low frequency EMF can protect microglial cells from TNF-α induced damage and reduce migration.
- EMF appears to stimulate microglial phagocytic activity by modulating M1/M2 marker expression.
- Further research is needed to confirm EMF's therapeutic potential in TBI and similar conditions.
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