Upregulation of specific mRNA levels in rat brain after cell phone exposure.

{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "6 h/day for 126 days (18 weeks)"
  },
  "population": "Adult Sprague-Dawley rats",
  "sample_size": null,
  "outcomes": [
    "Brain mRNA levels (RT-PCR) of Calcium ATPase",
    "Brain mRNA levels (RT-PCR) of Neural Cell Adhesion Molecule (NCAM)",
    "Brain mRNA levels (RT-PCR) of Neural Growth Factor (NGF)",
    "Brain mRNA levels (RT-PCR) of Vascular Endothelial Growth Factor (VEGF)"
  ],
  "main_findings": "Rats exposed to regular cell phones for 6 h/day over 18 weeks showed statistically significant up-regulation of mRNA levels for Calcium ATPase, Neural Cell Adhesion Molecule, Neural Growth Factor, and Vascular Endothelial Growth Factor in brain tissue.",
  "effect_direction": "harm",
  "limitations": [
    "Frequency and SAR/exposure metrics not reported in the abstract",
    "Sample size not reported in the abstract",
    "Only mRNA expression endpoints reported; no direct clinical/functional neurological outcomes described in the abstract",
    "Exposure described as 'regular cell phones' without further characterization"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "rat",
    "Sprague-Dawley",
    "mobile phone",
    "microwave radiation",
    "chronic exposure",
    "brain",
    "RT-PCR",
    "mRNA upregulation",
    "Calcium ATPase",
    "Neural Cell Adhesion Molecule",
    "Neural Growth Factor",
    "Vascular Endothelial Growth Factor"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.9,
      "reason": "Exposure source is regular cell phones."
    }
  ]
}