Cell type-specific genotoxic effects of intermittent extremely low-frequency electromagnetic fields.

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": "1–24 h (intermittent exposure)"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "DNA strand breaks (alkaline comet assay)",
    "DNA strand breaks (neutral comet assay)"
  ],
  "main_findings": "Cultured cells from different tissues were exposed to intermittent 50 Hz, 1 mT ELF-EMF for 1–24 h and assessed with alkaline and neutral comet assays. Three cell types were identified as responders (human fibroblasts, human melanocytes, rat granulosa cells) and three as non-responders (human lymphocytes, human monocytes, human skeletal muscle cells), suggesting cell type-specific differences in ELF-EMF-associated DNA strand breaks.",
  "effect_direction": "mixed",
  "limitations": [
    "In vitro study in cultured cells; generalizability to in vivo human health effects is not addressed in the abstract.",
    "Sample sizes and statistical details are not provided in the abstract.",
    "Only DNA strand breaks assessed via comet assays; other genotoxic endpoints not described.",
    "Exposure described as intermittent but duty cycle/pattern not specified in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "extremely low-frequency electromagnetic fields",
    "ELF-EMF",
    "50 Hz",
    "1 mT",
    "intermittent exposure",
    "genotoxicity",
    "DNA strand breaks",
    "comet assay",
    "cell type-specific effects",
    "human fibroblasts",
    "human melanocytes",
    "rat granulosa cells",
    "human lymphocytes",
    "human monocytes",
    "human skeletal muscle cells"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Study involves ELF (50 Hz) exposure relevant to occupational/environmental ELF discussions, though conducted in vitro and not tied to a specific workplace source."
    }
  ]
}