Zinc affects nuclear factor kappa b and DNA methyltransferase activity in C3H cancer fibroblast cells induced by a 2100 MHz electromagnetic field

{
  "publication_year": null,
  "study_type": "in_vitro",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": 2100,
    "sar_wkg": null,
    "duration": "2 h"
  },
  "population": "C3H cancer fibroblast cells",
  "sample_size": null,
  "outcomes": [
    "Cell viability",
    "NF-κB activity",
    "DNA methyltransferase (DNMT) activity"
  ],
  "main_findings": "In C3H cancer fibroblast cells, 2100 MHz EMF exposure for 2 hours was associated with increased cell viability and increased NF-κB and DNMT activities versus control. Co-treatment with zinc (50, 100, or 200 µM) plus 2100 MHz EMF was associated with decreased cell viability and decreased NF-κB and DNMT activities compared with the EMF-only group.",
  "effect_direction": "mixed",
  "limitations": [
    "In vitro cell model; findings may not translate to humans or real-world exposures.",
    "No sample size or replication details provided in the abstract.",
    "Exposure metric (e.g., SAR) and dosimetry details are not reported in the abstract.",
    "Only short-term (2 h) exposure assessed.",
    "Zinc was tested only in combination with EMF; zinc-only effects are not described in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "stance": "concern",
  "stance_confidence": 0.66,
  "summary": "This in vitro study examined C3H cancer fibroblast cells exposed to a 2100 MHz electromagnetic field for 2 hours, with or without zinc supplementation. The abstract reports increased cell viability and increased NF-κB and DNMT activities in the EMF-only group versus control. Zinc co-treatment (50–200 µM) was reported to reduce NF-κB and DNMT activities and reduce viability compared with EMF-only.",
  "key_points": [
    "The study used an in vitro C3H cancer fibroblast cell model.",
    "Cells were exposed to 2100 MHz EMF for 2 hours, with control and sham control groups.",
    "EMF exposure was reported to increase cell viability compared with control.",
    "EMF exposure was reported to increase NF-κB and DNMT activities compared with control.",
    "Zinc (50–200 µM) combined with EMF was reported to decrease viability compared with EMF-only.",
    "Zinc combined with EMF was reported to decrease NF-κB and DNMT activities compared with EMF-only."
  ],
  "categories": [
    "RF-EMF",
    "Mobile Phones",
    "In Vitro",
    "Molecular Biology",
    "Epigenetics"
  ],
  "tags": [
    "2100 MHz",
    "RF-EMF",
    "Mobile Phone Radiation",
    "Cancer Fibroblast Cells",
    "C3H Cells",
    "Zinc Supplementation",
    "NF-kappaB",
    "DNA Methyltransferase",
    "DNMT Activity",
    "Cell Viability",
    "Epigenetic Enzymes",
    "Inflammatory Signaling"
  ],
  "keywords": [
    "2100 MHz",
    "electromagnetic field",
    "EMF",
    "mobile phones",
    "zinc",
    "Zn",
    "C3H cancer fibroblast cells",
    "cell viability",
    "NF-κB",
    "nuclear factor kappa b",
    "DNMT",
    "DNA methyltransferase"
  ],
  "suggested_hubs": [
    {
      "slug": "cell-phones",
      "weight": 0.86,
      "reason": "The abstract frames the 2100 MHz EMF as emitted by mobile phones and studies cellular responses to this exposure."
    }
  ],
  "social": {
    "tweet": "In C3H cancer fibroblast cells, 2 h exposure to 2100 MHz EMF was reported to increase NF-κB and DNMT activities and cell viability vs control; zinc (50–200 µM) co-treatment reduced these measures vs EMF-only (in vitro study).",
    "facebook": "An in vitro study in C3H cancer fibroblast cells reported that 2 hours of 2100 MHz EMF exposure increased cell viability and increased NF-κB and DNA methyltransferase (DNMT) activities compared with control. Zinc co-treatment (50–200 µM) was reported to reduce NF-κB and DNMT activities and reduce viability compared with EMF-only.",
    "linkedin": "This in vitro paper reports that 2100 MHz EMF exposure for 2 hours increased NF-κB and DNMT activities and cell viability in C3H cancer fibroblast cells versus control. Zinc (50–200 µM) co-treatment was reported to attenuate NF-κB and DNMT activity increases compared with EMF-only, highlighting a potential modulatory role of zinc under these experimental conditions."
  }
}