Testicular development evaluation in rats exposed to 60 Hz and 1 mT electromagnetic field.

Journal of applied toxicology : JAT · 2011 · Harm · Moderate evidence

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HarmModerate evidencePaper 4355

Study snapshot

PublicationJournal of applied toxicology : JAT · 2011

Study typeanimal

Reported directionHarm

Evidence ratingModerate

Abstract

Society has been increasingly exposed to low-frequency electromagnetic fields (EMF), mainly from electricity distribution networks and electro-electronic devices. Aiming to clarify the extension of possible interactions between EMF and testicular development, this study evaluated the effects of exposure to 60 Hz and 1 mT EMF in the maturation of testicular components. Wistar rats were exposed to EMF three times per day for 30 min, between the 13th day of gestation and the 21st postnatal day. Results showed a decrease in the following parameters: tubular diameter and seminiferous tubules area; seminiferous epithelium height; total volume of seminiferous tubule; tubular lumen; seminiferous epithelium; and Leydig cells. On the other hand, an increase was observed in connective tissue cells and blood vessels volume. Plasma testosterone, Sertoli cells population, tubular length and gonadosomatic index did not change when exposed to EMF. Histomorphometric analysis showed that exposure to EMF can promote a delay in testicular development.

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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 typeanimal

Effect directionharm

PopulationWistar rats

Sample sizeNot supplied

ExposureELF · 0.06 MHz · 30 min, three times per day, from gestational day 13 to postnatal day 21

Evidence strengthModerateConfidence: 70% · Peer reviewed: yes

Main findings

Exposure to 60 Hz, 1 mT EMF decreased tubular diameter, seminiferous tubules area, seminiferous epithelium height, total volume of seminiferous tubule, tubular lumen, seminiferous epithelium, and Leydig cells, while increasing connective tissue cells and blood vessels volume. Plasma testosterone, Sertoli cells population, tubular length, and gonadosomatic index were unchanged. EMF exposure may delay testicular development.

Outcomes measured

tubular diameter
seminiferous tubules area
seminiferous epithelium height
total volume of seminiferous tubule
tubular lumen
seminiferous epithelium
Leydig cells
connective tissue cells volume
blood vessels volume
plasma testosterone
Sertoli cells population
tubular length
gonadosomatic index
testicular development delay

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.06,
    "sar_wkg": null,
    "duration": "30 min, three times per day, from gestational day 13 to postnatal day 21"
  },
  "population": "Wistar rats",
  "sample_size": null,
  "outcomes": [
    "tubular diameter",
    "seminiferous tubules area",
    "seminiferous epithelium height",
    "total volume of seminiferous tubule",
    "tubular lumen",
    "seminiferous epithelium",
    "Leydig cells",
    "connective tissue cells volume",
    "blood vessels volume",
    "plasma testosterone",
    "Sertoli cells population",
    "tubular length",
    "gonadosomatic index",
    "testicular development delay"
  ],
  "main_findings": "Exposure to 60 Hz, 1 mT EMF decreased tubular diameter, seminiferous tubules area, seminiferous epithelium height, total volume of seminiferous tubule, tubular lumen, seminiferous epithelium, and Leydig cells, while increasing connective tissue cells and blood vessels volume. Plasma testosterone, Sertoli cells population, tubular length, and gonadosomatic index were unchanged. EMF exposure may delay testicular development.",
  "effect_direction": "harm",
  "limitations": [],
  "evidence_strength": "moderate",
  "confidence": 0.7,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "low-frequency electromagnetic fields",
    "testicular development",
    "rats",
    "60 Hz",
    "1 mT",
    "Leydig cells",
    "seminiferous tubules"
  ],
  "suggested_hubs": []
}

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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: 10.1002/jat.1584
PubMed: 20936650

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