Exposure to hexavalent chromium and 1800 MHz electromagnetic radiation can synergistically induce intracellular DNA damage in mouse embryonic fibroblasts

Biochem Biophys Res Commun · 2026 · Mixed · Low evidence

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MixedLow evidencePaper 2455

Under standardized non-thermal conditions, 1800 MHz RF-EMF exposure alone did not induce detectable DNA damage in mouse embryonic fibroblasts. RF-EMF did not significantly enhance DNA damage caused by H2O2, 4NQO, or Cd2+, but co-exposure with hexavalent chrom…

Study snapshot

PublicationBiochem Biophys Res Commun · 2026

Study typein_vitro

Reported directionMixed

Evidence ratingLow

Abstract

Category: Toxicology Tags: RF-EMF, DNA damage, hexavalent chromium, genotoxicity, co-carcinogen, mouse embryonic fibroblasts, electromagnetic radiation DOI: 10.1016/j.bbrc.2026.153360 URL: pubmed.ncbi.nlm.nih.gov Overview Radiofrequency electromagnetic fields (RF-EMF) are common in modern environments and have been classified by the International Agency for Research on Cancer as possibly carcinogenic to humans (Group 2B). However, the potential of RF-EMF to act as a co-carcinogen remains uncertain. This study investigated whether exposure to 1800 MHz RF-EMF could influence chemically induced DNA damage in mouse embryonic fibroblasts (MEF). Methodology - MEF cells were exposed to RF-EMF alone, or together with hydrogen peroxide (H2O2), 4-nitroquinoline-1-oxide (4NQO), cadmium (Cd2+), or hexavalent chromium [Cr(VI)]. - Exposure was conducted under standardized, non-thermal conditions using a waveguide system. - The alkaline comet assay was used to assess DNA damage. Findings - RF-EMF exposure alone did not induce detectable DNA damage. - RF-EMF did not significantly increase DNA damage caused by H2O2, 4NQO, or Cd2+. - However, combined exposure to RF-EMF and Cr(VI) led to a significant synergistic increase in DNA damage in MEF cells. Conclusion These results indicate that RF-EMF can selectively intensify the genotoxic effects of Cr(VI), emphasizing the necessity for further research into the co-toxic mechanisms between electromagnetic fields and chemical agents. This demonstrates a concrete link between EMF exposure and increased DNA damage risk under certain chemical conditions, supporting concerns about EMF-related health risks.

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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 typein_vitro

Effect directionmixed

PopulationMouse embryonic fibroblasts (MEF)

Sample sizeNot supplied

ExposureRF · 1800 MHz

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Outcomes measured

Intracellular DNA damage (alkaline comet assay)

Limitations

In vitro model (mouse embryonic fibroblasts); generalizability to humans not addressed in abstract
Exposure metrics such as SAR and exposure duration not reported in abstract
Mechanistic basis for the reported synergy not established in abstract
Sample size/replication details not provided in abstract

View raw extracted JSON

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "RF",
    "source": null,
    "frequency_mhz": 1800,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Mouse embryonic fibroblasts (MEF)",
  "sample_size": null,
  "outcomes": [
    "Intracellular DNA damage (alkaline comet assay)"
  ],
  "main_findings": "Under standardized non-thermal conditions, 1800 MHz RF-EMF exposure alone did not induce detectable DNA damage in mouse embryonic fibroblasts. RF-EMF did not significantly enhance DNA damage caused by H2O2, 4NQO, or Cd2+, but co-exposure with hexavalent chromium [Cr(VI)] produced a significant synergistic increase in DNA damage.",
  "effect_direction": "mixed",
  "limitations": [
    "In vitro model (mouse embryonic fibroblasts); generalizability to humans not addressed in abstract",
    "Exposure metrics such as SAR and exposure duration not reported in abstract",
    "Mechanistic basis for the reported synergy not established in abstract",
    "Sample size/replication details not provided in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "RF-EMF",
    "radiofrequency electromagnetic fields",
    "1800 MHz",
    "genotoxicity",
    "DNA damage",
    "alkaline comet assay",
    "co-exposure",
    "co-carcinogen",
    "hexavalent chromium",
    "Cr(VI)",
    "cadmium",
    "4-nitroquinoline-1-oxide",
    "hydrogen peroxide",
    "non-thermal"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.25,
      "reason": "Abstract references IARC Group 2B classification and carcinogenicity context for RF-EMF."
    }
  ]
}

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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: 10.1016/j.bbrc.2026.153360
PubMed: 41619510

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