[The cardiac injury effect of microwave radiation on rabbit and its mechanism].

Wei sheng yan jiu = Journal of hygiene research · 2015 · Harm · Low evidence

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HarmLow evidencePaper 6568

Study snapshot

PublicationWei sheng yan jiu = Journal of hygiene research · 2015

Study typeanimal

Reported directionHarm

Evidence ratingLow

Abstract

OBJECTIVE: To investigate the cardiac injury effect of different intensities microwave radiation on rabbits and its possible mechanism. METHODS: Rabbits were radiated by intensity of 50, 100, 150 and 200 mW/cm2 2450 MHz microwave for 20 min. 6 h after microwave radiation, the heart tissue was taken. ATP and mitochondria complex IV and V were measured in myocardial cells. The changes of myocardial tissue were observed by light microscopic. The expression of Caspase-3 and HSP 70 were detected by western blotting. RESULTS: The activity of ATP and mitochondria complex IV and V decreased significantly compared with normal control in cardiac tissue. 100, 150 and 200 mW/cm2 microwave radiation group vs. control group (P <0. 05). The HE staining result showed that myocardial cell appears edema, muscle fiber malalignment, cells appeared obvious injury. Results of western blotting showed that the expression of Caspase-3 and HSP 70 protein increased significantly in different dosage radiation group (P <0. 05). CONCLUSION: Microwave radiation has injury effect on rabbit heart. The possible mechanism may be related with inducing cell apoptosis by changing of stress level in myocardial cell.

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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 directionharm

PopulationRabbits

Sample sizeNot supplied

Exposuremicrowave · 2450 MHz · 20 min

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Rabbits exposed to 2450 MHz microwave radiation (50–200 mW/cm2 for 20 min) showed decreased ATP and mitochondrial complex IV and V activity in cardiac tissue, with significant decreases reported for 100, 150, and 200 mW/cm2 vs control (P<0.05). Histology indicated myocardial edema, muscle fiber malalignment, and apparent cellular injury, and western blotting showed increased Caspase-3 and HSP70 expression in exposed groups (P<0.05).

Outcomes measured

Cardiac tissue injury (histology/HE staining)
Myocardial ATP activity
Mitochondrial complex IV activity
Mitochondrial complex V activity
Caspase-3 protein expression
HSP70 protein expression

Limitations

Sample size not reported in abstract.
Timing limited to a single post-exposure time point (6 h).
Exposure metric reported as power density (mW/cm2); SAR not provided.
Details on randomization/blinding and control conditions not described in abstract.

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": 2450,
    "sar_wkg": null,
    "duration": "20 min"
  },
  "population": "Rabbits",
  "sample_size": null,
  "outcomes": [
    "Cardiac tissue injury (histology/HE staining)",
    "Myocardial ATP activity",
    "Mitochondrial complex IV activity",
    "Mitochondrial complex V activity",
    "Caspase-3 protein expression",
    "HSP70 protein expression"
  ],
  "main_findings": "Rabbits exposed to 2450 MHz microwave radiation (50–200 mW/cm2 for 20 min) showed decreased ATP and mitochondrial complex IV and V activity in cardiac tissue, with significant decreases reported for 100, 150, and 200 mW/cm2 vs control (P<0.05). Histology indicated myocardial edema, muscle fiber malalignment, and apparent cellular injury, and western blotting showed increased Caspase-3 and HSP70 expression in exposed groups (P<0.05).",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract.",
    "Timing limited to a single post-exposure time point (6 h).",
    "Exposure metric reported as power density (mW/cm2); SAR not provided.",
    "Details on randomization/blinding and control conditions not described in abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "2450 MHz",
    "rabbit",
    "heart",
    "myocardial injury",
    "ATP",
    "mitochondria complex IV",
    "mitochondria complex V",
    "Caspase-3",
    "HSP70",
    "apoptosis",
    "power density"
  ],
  "suggested_hubs": [
    {
      "slug": "rf-health-effects",
      "weight": 0.86,
      "reason": "Animal experiment assessing cardiac effects of 2450 MHz microwave (RF) exposure."
    }
  ]
}

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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: 26591782

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