RF Safe

Ultra high frequency-electromagnetic field irradiation during pregnancy leads to an increase in erythrocytes micronuclei incidence in rat offspring.

Life sciences · 2006 · Mixed · Low evidence

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MixedLow evidencePaper 5104

Rat offspring exposed in utero to non-thermal UHF-EMF from a cellular phone showed a significant increase in micronucleus occurrence in erythrocytes. No significant differences were found in measured oxidative parameters in offspring blood or liver, and the a…

Study snapshot

PublicationLife sciences · 2006
Study typeanimal
Reported directionMixed
Evidence ratingLow

Abstract

Mobile telephones and their base stations are an important ultra high frequency-electromagnetic field (UHF-EMF) source and their utilization is increasing all over the world. Epidemiological studies suggested that low energy UHF-EMF emitted from a cellular telephone may cause biological effects, such as DNA damage and changes on oxidative metabolism. An in vivo mammalian cytogenetic test, the micronucleus (MN) assay, was used to investigate the occurrence of chromosomal damage in erythrocytes from rat offspring exposed to a non-thermal UHF-EMF from a cellular phone during their embryogenesis; the irradiated group showed a significant increase in MN occurrence. In order to investigate if UHF-EMF could also alter oxidative parameters in the peripheral blood and in the liver - an important hematopoietic tissue in rat embryos and newborns - we also measured the activity of antioxidant enzymes, quantified total sulfhydryl content, protein carbonyl groups, thiobarbituric acid-reactive species and total non-enzymatic antioxidant defense. No significant differences were found in any oxidative parameter of offspring blood and liver. The average number of pups in each litter has also not been significantly altered. Our results suggest that, under our experimental conditions, UHF-EMF is able to induce a genotoxic response in hematopoietic tissue during the embryogenesis through an unknown mechanism.

Machine Enhanced Logic

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
PopulationRat offspring (exposed in utero during embryogenesis)
Sample sizeNot supplied
ExposureUHF/RF · during embryogenesis (pregnancy)
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Rat offspring exposed in utero to non-thermal UHF-EMF from a cellular phone showed a significant increase in micronucleus occurrence in erythrocytes. No significant differences were found in measured oxidative parameters in offspring blood or liver, and the average number of pups per litter was not significantly altered.

Outcomes measured

  • Micronucleus (MN) occurrence in erythrocytes (chromosomal damage/genotoxicity)
  • Oxidative parameters in peripheral blood and liver (antioxidant enzyme activity, total sulfhydryl content, protein carbonyl groups, thiobarbituric acid-reactive species, total non-enzymatic antioxidant defense)
  • Average number of pups per litter

Limitations

  • Frequency, SAR, and detailed exposure conditions not reported in the provided abstract/metadata
  • Sample size not reported in the provided abstract/metadata
  • Mechanism described as unknown
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "UHF/RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "during embryogenesis (pregnancy)"
  },
  "population": "Rat offspring (exposed in utero during embryogenesis)",
  "sample_size": null,
  "outcomes": [
    "Micronucleus (MN) occurrence in erythrocytes (chromosomal damage/genotoxicity)",
    "Oxidative parameters in peripheral blood and liver (antioxidant enzyme activity, total sulfhydryl content, protein carbonyl groups, thiobarbituric acid-reactive species, total non-enzymatic antioxidant defense)",
    "Average number of pups per litter"
  ],
  "main_findings": "Rat offspring exposed in utero to non-thermal UHF-EMF from a cellular phone showed a significant increase in micronucleus occurrence in erythrocytes. No significant differences were found in measured oxidative parameters in offspring blood or liver, and the average number of pups per litter was not significantly altered.",
  "effect_direction": "mixed",
  "limitations": [
    "Frequency, SAR, and detailed exposure conditions not reported in the provided abstract/metadata",
    "Sample size not reported in the provided abstract/metadata",
    "Mechanism described as unknown"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "UHF-EMF",
    "RF-EMF",
    "mobile phone",
    "pregnancy",
    "embryogenesis",
    "rat offspring",
    "micronucleus assay",
    "genotoxicity",
    "chromosomal damage",
    "oxidative stress",
    "antioxidant enzymes",
    "liver",
    "peripheral blood"
  ],
  "suggested_hubs": [
    {
      "slug": "animal-studies",
      "weight": 0.9,
      "reason": "In vivo rat study assessing prenatal RF/UHF-EMF exposure effects on offspring outcomes."
    }
  ]
}
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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.lfs.2006.08.018
PubMed: 16978664

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