Low-power 2.45-GHz microwave radiation affects neither the vacuolar potential nor the low frequency excess noise in single cells of characean algae.

The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute · 1985 · No effect · Low evidence

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No effectLow evidencePaper 6179

Single cells of Chara braunii and Nitella flexilis were irradiated with 2.45-GHz microwaves for short, intermediate, and long durations. No reliable radiation-correlated shifts were observed in vacuolar potential (dc level), low-frequency excess noise, or mem…

Study snapshot

PublicationThe Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute · 1985
Study typeanimal
Reported directionNo effect
Evidence ratingLow

Abstract

Single, giant cells of the eukaryotic green algae Chara braunii and Nitella flexilis were subjected to short-, intermediate-, and long-term irradiations with 2.45-GHz microwaves. A search was carried out for radiation-correlated shifts (i) in both the dc level and the rms low-frequency excess noise of the vacuolar potential and (ii) in the membrane resistivity. No reliable shifts were observed, either in normal cells or in cells subjected to reduced temperatures or the poison ethacrynic acid.

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 directionno_effect
PopulationSingle cells of the eukaryotic green algae Chara braunii and Nitella flexilis
Sample sizeNot supplied
Exposuremicrowave · 2450 MHz · short-, intermediate-, and long-term irradiations
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Single cells of Chara braunii and Nitella flexilis were irradiated with 2.45-GHz microwaves for short, intermediate, and long durations. No reliable radiation-correlated shifts were observed in vacuolar potential (dc level), low-frequency excess noise, or membrane resistivity, including under reduced temperature or ethacrynic acid conditions.

Outcomes measured

  • Vacuolar potential (dc level)
  • RMS low-frequency excess noise of vacuolar potential
  • Membrane resistivity

Limitations

  • Sample size not reported in abstract
  • Exposure level/power density or SAR not reported in abstract
  • Details of irradiation durations and experimental protocol not provided in abstract
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": 2450,
    "sar_wkg": null,
    "duration": "short-, intermediate-, and long-term irradiations"
  },
  "population": "Single cells of the eukaryotic green algae Chara braunii and Nitella flexilis",
  "sample_size": null,
  "outcomes": [
    "Vacuolar potential (dc level)",
    "RMS low-frequency excess noise of vacuolar potential",
    "Membrane resistivity"
  ],
  "main_findings": "Single cells of Chara braunii and Nitella flexilis were irradiated with 2.45-GHz microwaves for short, intermediate, and long durations. No reliable radiation-correlated shifts were observed in vacuolar potential (dc level), low-frequency excess noise, or membrane resistivity, including under reduced temperature or ethacrynic acid conditions.",
  "effect_direction": "no_effect",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure level/power density or SAR not reported in abstract",
    "Details of irradiation durations and experimental protocol not provided in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "2.45 GHz",
    "microwave radiation",
    "Chara braunii",
    "Nitella flexilis",
    "vacuolar potential",
    "membrane resistivity",
    "low-frequency excess noise",
    "single-cell electrophysiology"
  ],
  "suggested_hubs": []
}
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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: 10.1080/16070658.1985.11720278
PubMed: 3847506

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