Resonance effect of microwaves on the genome conformational state of E. coli cells.

Abstract

The effect of low intensity microwaves on the conformational state of the genome of X-irradiated E. coli cells was studied by the method of viscosity anomalous time dependencies. It has been established that within the ranges of 51.62-51.84 GHz and 41.25-41.50 GHz the frequency dependence of the observed effect has a resonance nature with a resonance half-width of the order of 100 MHz. The power dependence of the microwave effect within the range of 0.1-200 microW/cm2 has shown that a power density of 1 microW/cm2 is sufficient to suppress radiation-induced repair of the genome conformational state. The effect of microwave suppression of repair is well reproduced and does not depend on the sequence of cell exposure to X-rays and microwave radiation in the millimeter band. The results obtained indicate the role of the cell genome in the resonant interaction of cells with low intensity millimeter waves.

AI evidence extraction

Main findings

Low-intensity millimeter-wave exposure showed resonance-like frequency dependence in the ranges 51.62–51.84 GHz and 41.25–41.50 GHz (resonance half-width ~100 MHz). Within 0.1–200 microW/cm2, a power density of 1 microW/cm2 was reported sufficient to suppress radiation-induced repair of the genome conformational state; this suppression was reported reproducible and independent of whether cells were exposed to X-rays before or after millimeter waves.

Outcomes measured

• Genome conformational state (viscosity anomalous time dependencies)
• Radiation-induced repair of genome conformational state

Limitations

• Exposure duration not reported in abstract
• Specific microwave modulation/pulsing characteristics not reported
• No sample size or replication details provided in abstract
• Outcome is a biophysical proxy measure; broader biological relevance not described in abstract

Suggested hubs

• 5g-policy (0.2)
  Study involves millimeter-wave frequencies (41–52 GHz), which overlap with some 5G FR2 bands, though this is an in vitro bacterial study rather than policy-focused.

{
    "study_type": "in_vitro",
    "exposure": {
        "band": "mmWave",
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "X-irradiated E. coli cells",
    "sample_size": null,
    "outcomes": [
        "Genome conformational state (viscosity anomalous time dependencies)",
        "Radiation-induced repair of genome conformational state"
    ],
    "main_findings": "Low-intensity millimeter-wave exposure showed resonance-like frequency dependence in the ranges 51.62–51.84 GHz and 41.25–41.50 GHz (resonance half-width ~100 MHz). Within 0.1–200 microW/cm2, a power density of 1 microW/cm2 was reported sufficient to suppress radiation-induced repair of the genome conformational state; this suppression was reported reproducible and independent of whether cells were exposed to X-rays before or after millimeter waves.",
    "effect_direction": "harm",
    "limitations": [
        "Exposure duration not reported in abstract",
        "Specific microwave modulation/pulsing characteristics not reported",
        "No sample size or replication details provided in abstract",
        "Outcome is a biophysical proxy measure; broader biological relevance not described in abstract"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "millimeter waves",
        "microwaves",
        "resonance",
        "E. coli",
        "genome conformation",
        "DNA repair",
        "X-irradiation",
        "power density",
        "51.62–51.84 GHz",
        "41.25–41.50 GHz"
    ],
    "suggested_hubs": [
        {
            "slug": "5g-policy",
            "weight": 0.200000000000000011102230246251565404236316680908203125,
            "reason": "Study involves millimeter-wave frequencies (41–52 GHz), which overlap with some 5G FR2 bands, though this is an in vitro bacterial study rather than policy-focused."
        }
    ]
}

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