RF Safe

Effect of 905 MHz microwave radiation on colony growth of the yeast Saccharomyces cerevisiae strains FF18733, FF1481 and D7.

Radiology and oncology · 2010 · Mixed · Low evidence

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MixedLow evidencePaper 6507

After 15, 30, and 60 minutes of 905 MHz GSM-like pulsed RF/MW exposure at SAR 0.12 W/kg, the wild-type strain FF18733 showed no statistically significant change in colony growth versus control. The FF1481 (rad1 mutant) and D7 strains showed statistically sign…

Study snapshot

PublicationRadiology and oncology · 2010
Study typeother
Reported directionMixed
Evidence ratingLow

Abstract

BACKGROUND: The aim of this study was to evaluate the effect of weak radiofrequency microwave (RF/MW) radiation emitted by mobile phones on colony growth of the yeast Saccharomyces cerevisiae. MATERIALS AND METHODS: S. cerevisiae strains FF18733 (wild-type), FF1481 (rad1 mutant) and D7 (commonly used to detect reciprocal and nonreciprocal mitotic recombinations) were exposed to a 905 MHz electromagnetic field that closely matched the Global System for Mobile Communication (GSM) pulse modulation signals for mobile phones at a specific absorption rate (SAR) of 0.12 W/kg. RESULTS: Following 15-, 30- and 60-minutes exposure to RF/MW radiation, strain FF18733 did not show statistically significant changes in colony growth compared to the control sample. The irradiated strains FF1481 and D7 demonstrated statistically significant reduction of colony growth compared to non-irradiated strains after all exposure times. Furthermore, strain FF1481 was more sensitive to RF/MW radiation than strain D7. CONCLUSIONS: The findings indicate that pulsed RF/MW radiation at a low SAR level can affect the rate of colony growth of different S. cerevisiae strains.

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 typeother
Effect directionmixed
PopulationYeast (Saccharomyces cerevisiae) strains FF18733, FF1481, and D7
Sample sizeNot supplied
ExposureRF · 905 MHz · 0.12 W/kg · 15, 30, and 60 minutes
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

After 15, 30, and 60 minutes of 905 MHz GSM-like pulsed RF/MW exposure at SAR 0.12 W/kg, the wild-type strain FF18733 showed no statistically significant change in colony growth versus control. The FF1481 (rad1 mutant) and D7 strains showed statistically significant reductions in colony growth at all exposure times, with FF1481 reported as more sensitive than D7.

Outcomes measured

  • Colony growth

Limitations

  • Sample size not reported in the abstract
  • Study design details (e.g., blinding, randomization, exposure setup specifics) not described in the abstract
View raw extracted JSON
{
  "study_type": "other",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": 905,
    "sar_wkg": 0.12,
    "duration": "15, 30, and 60 minutes"
  },
  "population": "Yeast (Saccharomyces cerevisiae) strains FF18733, FF1481, and D7",
  "sample_size": null,
  "outcomes": [
    "Colony growth"
  ],
  "main_findings": "After 15, 30, and 60 minutes of 905 MHz GSM-like pulsed RF/MW exposure at SAR 0.12 W/kg, the wild-type strain FF18733 showed no statistically significant change in colony growth versus control. The FF1481 (rad1 mutant) and D7 strains showed statistically significant reductions in colony growth at all exposure times, with FF1481 reported as more sensitive than D7.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in the abstract",
    "Study design details (e.g., blinding, randomization, exposure setup specifics) not described in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "905 MHz",
    "radiofrequency",
    "microwave radiation",
    "GSM pulse modulation",
    "mobile phone",
    "SAR 0.12 W/kg",
    "Saccharomyces cerevisiae",
    "yeast",
    "colony growth",
    "rad1 mutant",
    "D7 strain"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones-rf",
      "weight": 0.9,
      "reason": "Exposure described as RF/MW emitted by mobile phones with GSM-like pulse modulation at 905 MHz."
    }
  ]
}
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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: 10.2478/v10019-010-0019-7
PubMed: 22933904

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