Effects of extremely low-frequency electromagnetic field on fertility and heights of epithelial cells in pre-implantation stage endometrium and fallopian tube in mice.

Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine · 2010 · Harm · Moderate evidence

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HarmModerate evidencePaper 4398

Exposure to 50 Hz, 0.5 mT ELF-EMF for 4 hours daily over 2 weeks significantly decreased the number of flushed blastocysts and significantly increased the height of fallopian tube epithelial cells in mice. The height of endometrial epithelial cells showed an …

Study snapshot

PublicationZhong xi yi jie he xue bao = Journal of Chinese integrative medicine · 2010

Study typerandomized_trial

Reported directionHarm

Evidence ratingModerate

Abstract

OBJECTIVE: To investigate the effects of extremely low-frequency electromagnetic field (ELF-EMF) on fertility and heights of epithelial cells in pre-implantation stage endometrium and fallopian tube in mice. METHODS: Eighty female NMRI mice were randomly divided into 2 groups: control group was not exposed to EMF and experimental group was exposed to 4-hour EMF per day, 6 days a week for 2 weeks to 50 Hz, 0.5 mT EMF. Female mice in two groups were superovulated and mated with male mice over night. At the time of implantation, the blastocysts were obtained from the presumed pregnant mice with vaginal plug by flushing the uterus horns. The samples of uterus horns and fallopian tubes in two groups were taken and were processed for light microscopic studies. RESULTS: The analysis of mean number of the flushed blastocysts in the EMF group showed significant decrease as compared with the control group (P<0.03). Light microscopic study showed that the height of fallopian tube epithelial cells was significantly increased in the EMF group as compared with the control group (P<0.001). However the height of endometrial epithelial cells in the EMF group showed insignificant increase as compared with the control group. CONCLUSION: The results indicate that ELF-EMF has detrimental effect on female reproductive system in mice by decreasing the number of flushed blastocysts and increasing the height of fallopian tube epithelial cells.

Machine Enhanced Logic

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 typerandomized_trial

Effect directionharm

Populationfemale NMRI mice

Sample size80

ExposureELF · 0.05 MHz · 4 hours per day, 6 days a week for 2 weeks

Evidence strengthModerateConfidence: 70% · Peer reviewed: yes

Main findings

Outcomes measured

number of flushed blastocysts
height of fallopian tube epithelial cells
height of endometrial epithelial cells

Limitations

Study conducted in mice, limiting direct human applicability
Exposure parameters specific and may not represent typical human exposures
No long-term fertility outcomes assessed

View raw extracted JSON

{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": "4 hours per day, 6 days a week for 2 weeks"
  },
  "population": "female NMRI mice",
  "sample_size": 80,
  "outcomes": [
    "number of flushed blastocysts",
    "height of fallopian tube epithelial cells",
    "height of endometrial epithelial cells"
  ],
  "main_findings": "Exposure to 50 Hz, 0.5 mT ELF-EMF for 4 hours daily over 2 weeks significantly decreased the number of flushed blastocysts and significantly increased the height of fallopian tube epithelial cells in mice. The height of endometrial epithelial cells showed an insignificant increase.",
  "effect_direction": "harm",
  "limitations": [
    "Study conducted in mice, limiting direct human applicability",
    "Exposure parameters specific and may not represent typical human exposures",
    "No long-term fertility outcomes assessed"
  ],
  "evidence_strength": "moderate",
  "confidence": 0.7,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "ELF-EMF",
    "fertility",
    "blastocysts",
    "fallopian tube",
    "epithelial cells",
    "mice"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.6,
      "reason": "ELF-EMF exposure relevant to occupational or environmental settings."
    }
  ]
}

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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: 10.3736/jcim20100111
PubMed: 20082760

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