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Alterations of thymic morphology and antioxidant biomarkers in 60-day-old male rats following exposure to a continuous 900 MHz electromagnetic field during adolescence.

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Kulaber A, Kerimoğlu G, Ersöz Ş, Çolakoğlu S, Odacı E. · 2017

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Daily cell phone frequency exposure during adolescence increased immune organ damage and oxidative stress in developing rats.

Plain English Summary

Summary written for general audiences

Researchers exposed young male rats to 900 MHz radiofrequency radiation (similar to cell phone frequencies) for one hour daily during their adolescent development period. The exposed rats showed increased oxidative stress in their thymus (a key immune system organ) and tissue damage including bleeding into the tissue. This suggests that RF radiation during development may harm the immune system by creating damaging free radicals.

Why This Matters

This study adds important evidence to our understanding of how radiofrequency radiation affects the developing immune system. The thymus plays a critical role in training immune cells, particularly during youth, making damage to this organ especially concerning. The 900 MHz frequency used matches that of many cell phones and wireless devices that children use daily. What makes this research particularly relevant is the timing of exposure during adolescence, a critical developmental window when the immune system is still maturing. The increased malondialdehyde levels indicate oxidative stress, the same cellular damage mechanism linked to aging and disease. While we can't directly extrapolate from rat studies to humans, the biological pathways for oxidative stress are remarkably similar across species, and the thymus serves the same immune function in both rats and humans.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 900 MHz Duration: 1 h every day between postnatal days 22 and 59

Study Details

We investigated changes in thymic tissue of male rats exposed to a 900 megahertz (MHz) electromagnetic field (EMF) on postnatal days 22–59.

Three groups of six 21-day-old male Sprague-Dawley rats were allocated as: control (CG), sham (SG) a...

Oxidant/antioxidant parameters were investigated biochemically. Malondialdehyde (MDA) levels in EMFG...

We found that 900 MHz EMF applied for 1 h/day on postnatal days 22–59 can increase tissue MDA and histopathological changes in male rat thymic tissue

Cite This Study
Kulaber A, Kerimoğlu G, Ersöz Ş, Çolakoğlu S, Odacı E. (2017). Alterations of thymic morphology and antioxidant biomarkers in 60-day-old male rats following exposure to a continuous 900 MHz electromagnetic field during adolescence. Biotech Histochem. 92(5):331-337, 2017.
Show BibTeX
@article{a_2017_alterations_of_thymic_morphology_1663,
  author = {Kulaber A and Kerimoğlu G and Ersöz Ş and Çolakoğlu S and Odacı E.},
  title = {Alterations of thymic morphology and antioxidant biomarkers in 60-day-old male rats following exposure to a continuous 900 MHz electromagnetic field during adolescence.},
  year = {2017},
  doi = {10.1080/10520295.2017.1312525},
  url = {https://www.tandfonline.com/doi/abs/10.1080/10520295.2017.1312525},
}
DOI: 10.1080/10520295.2017.1312525

Cited By (5 papers)

Quick Questions About This Study

A 2017 study found that daily exposure to 900 MHz radiation during adolescence caused tissue damage and oxidative stress in the thymus, a key immune organ. Young rats exposed for one hour daily showed increased harmful free radicals and bleeding in thymic tissue, suggesting potential immune system impacts during critical development periods.
Research on adolescent rats showed that 900 MHz radiofrequency radiation (similar to cell phones) caused measurable damage to thymus tissue when applied daily during development. The study found increased oxidative stress markers and tissue bleeding, indicating that RF exposure during puberty may harm this crucial immune organ.
Daily exposure to 900 MHz radiation significantly increased malondialdehyde (MDA) levels in thymus tissue, indicating higher oxidative stress and reduced antioxidant protection. This 2017 study on adolescent rats showed that one hour of daily RF exposure overwhelmed the body's natural antioxidant defenses in immune tissue.
A controlled study found that one hour of daily 900 MHz radiation exposure during adolescence caused extravascular erythrocytes (bleeding into tissue) in the thymus gland of male rats. This tissue damage occurred alongside increased oxidative stress, suggesting that even limited daily RF exposure can cause physical harm to immune organs.
Research demonstrates that 900 MHz electromagnetic field exposure during adolescent development can damage immune system function. A 2017 study found that daily one-hour exposures increased oxidative stress and caused tissue damage in the thymus, the organ responsible for training immune cells, potentially compromising long-term immune health.