Cytokine profile of human peripheral blood mononuclear cells exposed to 50 Hz EMF.

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": "3 days"
  },
  "population": "Human peripheral blood mononuclear cells (h-PBMCs) from a healthy individual",
  "sample_size": null,
  "outcomes": [
    "Cytokine production (IL-1β, IL-2, IL-6, IL-10, IFN-γ, TNF-α) measured by ELISA"
  ],
  "main_findings": "Human PBMCs exposed in vitro to 50 Hz EMF at 1, 3, 10, and 30 mT for 3 days showed a significant reduction in TNF-α production at all exposure levels versus non-exposed controls. Significant increases in IL-1β and decreases in IFN-γ were observed at some exposure strengths, while IL-2, IL-6, and IL-10 showed no significant differences.",
  "effect_direction": "mixed",
  "limitations": [
    "In vitro study (cell culture), not an in vivo health outcome",
    "Cells derived from a single healthy individual (generalizability limited)",
    "Details on replication/sample size not provided in abstract"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "50 Hz",
    "ELF-EMF",
    "peripheral blood mononuclear cells",
    "PBMC",
    "cytokines",
    "ELISA",
    "TNF-alpha",
    "IL-1 beta",
    "IFN-gamma",
    "immune system",
    "magnetic flux density",
    "milliTesla"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.35,
      "reason": "Study uses 50 Hz magnetic field exposure (ELF) relevant to power-frequency environments, though no specific workplace source is stated."
    }
  ]
}