[The microarray study on the stress gene transcription profile in human retina pigment epithelial cells exposed to microwave radiation].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] · 2002 · Harm · Very low evidence

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HarmVery low evidencePaper 6386

Using a cDNA microarray of 97 target genes, seven genes showed increased transcription (reported fold-changes 2.07 to 3.68) after 2450 MHz simulated microwave exposure. No notably down-regulated genes were detected; the study also compared microwave exposure …

Study snapshot

PublicationZhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] · 2002

Study typein_vitro

Reported directionHarm

Evidence ratingVery low

Abstract

OBJECTIVE: To study the difference in stress and apoptosis related genes transcription between hTERT-RPE1 cells exposed to simulated microwave radiation and the cells with heat water bath, and the effects of microwave on gene transcription in cultured human retina pigment epithelial cells. METHODS: cDNA microarray technique was used to detect the mRNA isolated from hTERT-RPE1 cells exposed to 2 450 MHz simulated microwave radiation and with heat water bath, respectively. RESULTS: Among the 97 related aim genes, there were seven genes up-regulating its transcription, i.e., M31166 (2.52fold), L24123 (2.66fold), AF039704 (2.22fold), U67156 (2.07fold), AF040958 (2.13fold), NM-001423 (2.63fold) and NM-005346 (3.68fold). But, no notably down-regulating gene in transcription was detected. CONCLUSIONS: Microwave could induce up-regulating in multiple stress and apoptosis related genes transcription in cultured human retina pigment epithelial cells, hTERT-RPE1 cells. Microwave radiation has unique effect itself in addition to its heat effect.

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 typein_vitro

Effect directionharm

PopulationCultured human retina pigment epithelial cells (hTERT-RPE1)

Sample sizeNot supplied

Exposuremicrowave · 2450 MHz

Evidence strengthVery lowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

mRNA transcription changes in stress-related genes
mRNA transcription changes in apoptosis-related genes

Limitations

In vitro cell culture study; findings may not generalize to humans or in vivo retina.
Exposure metrics beyond frequency (e.g., SAR, power density) and exposure duration are not reported in the abstract.
Sample size/replication and statistical methods are not described in the abstract.
Gene identifiers are listed, but functional/clinical significance is not established in the abstract.

View raw extracted JSON

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": 2450,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Cultured human retina pigment epithelial cells (hTERT-RPE1)",
  "sample_size": null,
  "outcomes": [
    "mRNA transcription changes in stress-related genes",
    "mRNA transcription changes in apoptosis-related genes"
  ],
  "main_findings": "Using a cDNA microarray of 97 target genes, seven genes showed increased transcription (reported fold-changes 2.07 to 3.68) after 2450 MHz simulated microwave exposure. No notably down-regulated genes were detected; the study also compared microwave exposure with a heat water bath condition.",
  "effect_direction": "harm",
  "limitations": [
    "In vitro cell culture study; findings may not generalize to humans or in vivo retina.",
    "Exposure metrics beyond frequency (e.g., SAR, power density) and exposure duration are not reported in the abstract.",
    "Sample size/replication and statistical methods are not described in the abstract.",
    "Gene identifiers are listed, but functional/clinical significance is not established in the abstract."
  ],
  "evidence_strength": "very_low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "2450 MHz",
    "cDNA microarray",
    "gene transcription",
    "stress genes",
    "apoptosis genes",
    "retina pigment epithelial cells",
    "hTERT-RPE1",
    "heat water bath"
  ],
  "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: Not supplied
PubMed: 12411184

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