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Oxidative Stress

Pathological Findings Observed in the Kidneys of Postnatal Male Rats Exposed to the 2100 MHz Electromagnetic Field

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Bedir R, Tumkaya L, Mercantepe T, Yilmaz A · 2018

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Long-term exposure to 2100 MHz EMF induced oxidative stress-mediated acute renal injury in rats, with damage increasing with longer exposure duration.

Plain English Summary

Summary written for general audiences

This 2018 study exposed postnatal male rats to 2100 MHz electromagnetic fields for either 6 or 12 hours daily over 30 days and examined kidney tissue for signs of damage. The researchers found that EMF exposure induced oxidative stress (increased MDA, decreased GSH levels), increased apoptosis markers (caspase-3 positive cells), and structural deterioration of renal tubules, with effects correlating to exposure duration.

Why This Matters

2100 MHz is a frequency commonly used in mobile communications (3G networks). The study used standard markers of oxidative stress (GSH/MDA ratio) and apoptosis (caspase-3 immunohistochemistry), which are established indicators of cellular damage, though findings in rodent models may not directly translate to human exposure scenarios.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 2100 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 2100 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Bedir R, Tumkaya L, Mercantepe T, Yilmaz A (2018). Pathological Findings Observed in the Kidneys of Postnatal Male Rats Exposed to the 2100 MHz Electromagnetic Field.
Show BibTeX
@article{pathological_findings_observed_in_the_kidneys_of_postnatal_male_rats_exposed_to_the_2100_mhz_electromagnetic_field_ce2310,
  author = {Bedir R and Tumkaya L and Mercantepe T and Yilmaz A},
  title = {Pathological Findings Observed in the Kidneys of Postnatal Male Rats Exposed to the 2100 MHz Electromagnetic Field},
  year = {2018},
  doi = {10.1016/j.biopha.2018.02.042},
  
}
DOI: 10.1016/j.biopha.2018.02.042PubMed: 30600117

Quick Questions About This Study

Yes, this study found that both 25 mg/kg and 75 mg/kg doses of astaxanthin significantly protected rat kidneys from cisplatin-induced damage, improving kidney function markers and reducing cellular death by up to 50%.
Cisplatin caused severe kidney damage including tubular cell loss, vacuolization, glomerular degeneration, and tissue swelling. It also increased toxic markers like blood urea nitrogen and creatinine while depleting protective antioxidants.
Astaxanthin increased total antioxidant status levels while reducing total oxidant status, effectively rebalancing the oxidative stress equation. It also decreased Caspase-3 levels, indicating reduced programmed cell death in kidney tissues.
Both 25 mg/kg and 75 mg/kg daily doses provided significant kidney protection, though the study suggests the higher dose may offer additional benefits for preventing glomerular damage and tissue swelling.
Astaxanthin significantly ameliorated kidney damage but didn't completely reverse all effects. It restored much of the normal kidney structure and function while substantially reducing inflammatory markers and cellular death.