Bioassay for assessing cell stress in the vicinity of radio-frequency irradiating antennas.

Abstract

The 24 h exposure of water plants (etiolated duckweed) to RF-EMF between 7.8 V m(-1) and 1.8 V m(-1), generated by AM 1.287 MHz transmitting antennas, resulted in alanine accumulation in the plant cells, a phenomenon we have previously shown to be a universal stress signal. The magnitude of the effect corresponds qualitatively to the level of RF-EMF exposure. In the presence of 10 mM vitamin C, alanine accumulation is completely suppressed, suggesting the involvement of free radicals in the process. A unique biological connection has thus been made between exposure to RF-EMF and cell stress, in the vicinity of RF transmitting antennas. This simple test, which lasts only 24 h, constitutes a useful bioassay for the quick detection of biological cell stress caused in the vicinity of RF irradiating antennas.

AI evidence extraction

Main findings

After 24 h exposure to RF-EMF (1.8–7.8 V/m) generated by AM 1.287 MHz transmitting antennas, etiolated duckweed showed alanine accumulation in cells, described as a universal stress signal. The effect magnitude qualitatively corresponded to exposure level, and 10 mM vitamin C completely suppressed alanine accumulation.

Outcomes measured

• alanine accumulation in plant cells (stress signal)
• suppression of alanine accumulation with 10 mM vitamin C (suggesting free radical involvement)

Limitations

• Sample size not reported in abstract.
• Exposure metric reported as electric field strength (V/m) without SAR or dosimetry details.
• Findings are from a plant model; human health relevance is not addressed in the abstract.
• Outcome is a biochemical stress marker; no downstream functional or health endpoints reported.

Suggested hubs

• occupational-exposure (0.25)
  Study concerns exposure in the vicinity of RF transmitting antennas, though the model is plant-based rather than occupational.

{
    "study_type": "animal",
    "exposure": {
        "band": "RF",
        "source": "transmitting antennas (AM)",
        "frequency_mhz": 1.28699999999999992184029906638897955417633056640625,
        "sar_wkg": null,
        "duration": "24 h"
    },
    "population": "water plants (etiolated duckweed)",
    "sample_size": null,
    "outcomes": [
        "alanine accumulation in plant cells (stress signal)",
        "suppression of alanine accumulation with 10 mM vitamin C (suggesting free radical involvement)"
    ],
    "main_findings": "After 24 h exposure to RF-EMF (1.8–7.8 V/m) generated by AM 1.287 MHz transmitting antennas, etiolated duckweed showed alanine accumulation in cells, described as a universal stress signal. The effect magnitude qualitatively corresponded to exposure level, and 10 mM vitamin C completely suppressed alanine accumulation.",
    "effect_direction": "harm",
    "limitations": [
        "Sample size not reported in abstract.",
        "Exposure metric reported as electric field strength (V/m) without SAR or dosimetry details.",
        "Findings are from a plant model; human health relevance is not addressed in the abstract.",
        "Outcome is a biochemical stress marker; no downstream functional or health endpoints reported."
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "RF-EMF",
        "AM radio",
        "1.287 MHz",
        "transmitting antennas",
        "duckweed",
        "water plants",
        "cell stress",
        "alanine accumulation",
        "vitamin C",
        "free radicals",
        "bioassay",
        "electric field strength"
    ],
    "suggested_hubs": [
        {
            "slug": "occupational-exposure",
            "weight": 0.25,
            "reason": "Study concerns exposure in the vicinity of RF transmitting antennas, though the model is plant-based rather than occupational."
        }
    ]
}

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