RF Safe

The Effects of Mobile Phone Radiofrequency Radiation on Cochlear Stria Marginal Cells in Sprague-Dawley Rats

2020 · Mixed · Low evidence

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MixedLow evidencePaper 1576

After 24 h short-term exposure to 1,800 MHz RFR at SAR 2 or 4 W/kg (5 min on/10 min off), no DNA damage was detected and apoptosis did not increase (P > 0.05). ROS production was higher than control in the 4 W/kg group (P < 0.05).

Study snapshot

Publicationmanual · 2020
Study typeanimal
Reported directionMixed
Evidence ratingLow

Abstract

The Effects of Mobile Phone Radiofrequency Radiation on Cochlear Stria Marginal Cells in Sprague-Dawley Rats Yang H, Zhang Y, Wang Z, Zhong S, Hu G, Zuo W. The Effects of Mobile Phone Radiofrequency Radiation on Cochlear Stria Marginal Cells in Sprague-Dawley Rats. Bioelectromagnetics. 2020 Feb 18. doi: 10.1002/bem.22255. Abstract To investigate the possible mechanisms for biological effects of 1,800 MHz mobile radiofrequency radiation (RFR), the radiation-specific absorption rate was applied at 2 and 4 W/kg, and the exposure mode was 5 min on and 10 min off (conversation mode). Exposure time was 24 h short-term exposure. Following exposure, to detect cell DNA damage, cell apoptosis, and reactive oxygen species (ROS) generation, the Comet assay test, flow cytometry, DAPI (4',6-diamidino-2-phenylindole dihydrochloride) staining, and a fluorescent probe were used, respectively. Our experiments revealed that mobile phone RFR did not cause DNA damage in marginal cells, and the rate of cell apoptosis did not increase (P > 0.05). However, the production of ROS in the 4 W/kg exposure group was greater than that in the control group (P < 0.05). In conclusion, these results suggest that mobile phone energy was insufficient to cause cell DNA damage and cell apoptosis following short-term exposure, but the cumulative effect of mobile phone radiation still requires further confirmation. Activation of the ROS system plays a significant role in the biological effects of RFR. Conclusion The RFR emitted from mobile phones was insufficient to cause cell DNA damage and cell apoptosis following short-term exposure, but intracellular ROS levels in the 4 W/kg exposure group were significantly increased than in the control group,indicating that activation of the ROS system plays a crucial role in the biological effects of RFR. The cumulative effect of mobile phone radiation requires investigation. ncbi.nlm.nih.gov

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal
Effect directionmixed
PopulationSprague-Dawley rats (cochlear stria marginal cells)
Sample sizeNot supplied
ExposureRF · 1800 MHz · 24 h; 5 min on/10 min off (conversation mode); SAR groups 2 and 4 W/kg
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

After 24 h short-term exposure to 1,800 MHz RFR at SAR 2 or 4 W/kg (5 min on/10 min off), no DNA damage was detected and apoptosis did not increase (P > 0.05). ROS production was higher than control in the 4 W/kg group (P < 0.05).

Outcomes measured

  • DNA damage (Comet assay)
  • Apoptosis (flow cytometry; DAPI staining)
  • Reactive oxygen species (ROS) generation

Limitations

  • Sample size not reported in provided abstract/metadata
  • Short-term exposure only (24 h)
  • Authors note cumulative effects require further investigation
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": 1800,
    "sar_wkg": null,
    "duration": "24 h; 5 min on/10 min off (conversation mode); SAR groups 2 and 4 W/kg"
  },
  "population": "Sprague-Dawley rats (cochlear stria marginal cells)",
  "sample_size": null,
  "outcomes": [
    "DNA damage (Comet assay)",
    "Apoptosis (flow cytometry; DAPI staining)",
    "Reactive oxygen species (ROS) generation"
  ],
  "main_findings": "After 24 h short-term exposure to 1,800 MHz RFR at SAR 2 or 4 W/kg (5 min on/10 min off), no DNA damage was detected and apoptosis did not increase (P > 0.05). ROS production was higher than control in the 4 W/kg group (P < 0.05).",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in provided abstract/metadata",
    "Short-term exposure only (24 h)",
    "Authors note cumulative effects require further investigation"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "1,800 MHz",
    "radiofrequency radiation",
    "mobile phone",
    "SAR",
    "cochlear stria marginal cells",
    "Sprague-Dawley rats",
    "DNA damage",
    "apoptosis",
    "reactive oxygen species",
    "ROS"
  ],
  "suggested_hubs": []
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1002/bem.22255
PubMed: Not supplied

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