The effects of simultaneous combined exposure to CDMA and WCDMA electromagnetic fields on rat testicular function.

Bioelectromagnetics · 2012 · No effect · Low evidence

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No effectLow evidencePaper 4434

Study snapshot

PublicationBioelectromagnetics · 2012

Study typeanimal

Reported directionNo effect

Evidence ratingLow

Abstract

Wireless mobile phones and other telecommunication devices are used extensively in daily life. We therefore examined the effects of combined exposure to radiofrequency electromagnetic fields (RF-EMF) on rat testicular function, specifically with respect to sensitive processes such as spermatogenesis. Male rats were exposed to single code division multiple access (CDMA) and wideband code division multiple access (WCDMA) RF signals for 12 weeks. The RF exposure schedule comprised 45 min/day, 5 days/week for a total of 12 weeks. The whole-body average specific absorption rate (SAR) of CDMA and WCDMA was 2.0 W/kg each or 4.0 W/kg in total. We then investigated the correlates of testicular function such as sperm count in the cauda epididymis, testosterone concentration in the blood serum, malondialdehyde concentrations in the testes and epididymis, frequency of spermatogenesis stages, and appearance of apoptotic cells in the testes. We also immunoblotted for p53, bcl2, GADD45, cyclin G, and HSP70 in the testes of sham- and combined RF-exposed animals. Based on the results, we concluded that simultaneous exposure to CDMA and WCDMA RF-EMFs at 4.0 W/kg SAR did not have any observable adverse effects on rat spermatogenesis.

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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 directionno_effect

PopulationMale rats

Sample sizeNot supplied

ExposureRF · 4 W/kg · 45 min/day, 5 days/week for 12 weeks

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Male rats exposed simultaneously to CDMA and WCDMA RF signals (whole-body average SAR 2.0 W/kg each; 4.0 W/kg total) for 12 weeks showed no observable adverse effects on spermatogenesis. Multiple correlates of testicular function (including sperm count, testosterone, oxidative stress marker malondialdehyde, spermatogenesis staging, apoptosis, and selected protein markers) were assessed.

Outcomes measured

Rat testicular function
Spermatogenesis
Sperm count (cauda epididymis)
Serum testosterone concentration
Malondialdehyde concentrations (testes and epididymis)
Frequency of spermatogenesis stages
Apoptotic cells in testes
Testicular protein expression (p53, bcl2, GADD45, cyclin G, HSP70)

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": 4,
    "duration": "45 min/day, 5 days/week for 12 weeks"
  },
  "population": "Male rats",
  "sample_size": null,
  "outcomes": [
    "Rat testicular function",
    "Spermatogenesis",
    "Sperm count (cauda epididymis)",
    "Serum testosterone concentration",
    "Malondialdehyde concentrations (testes and epididymis)",
    "Frequency of spermatogenesis stages",
    "Apoptotic cells in testes",
    "Testicular protein expression (p53, bcl2, GADD45, cyclin G, HSP70)"
  ],
  "main_findings": "Male rats exposed simultaneously to CDMA and WCDMA RF signals (whole-body average SAR 2.0 W/kg each; 4.0 W/kg total) for 12 weeks showed no observable adverse effects on spermatogenesis. Multiple correlates of testicular function (including sperm count, testosterone, oxidative stress marker malondialdehyde, spermatogenesis staging, apoptosis, and selected protein markers) were assessed.",
  "effect_direction": "no_effect",
  "limitations": [],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "RF-EMF",
    "CDMA",
    "WCDMA",
    "combined exposure",
    "rat",
    "testis",
    "spermatogenesis",
    "sperm count",
    "testosterone",
    "malondialdehyde",
    "apoptosis",
    "p53",
    "bcl2",
    "GADD45",
    "cyclin G",
    "HSP70",
    "SAR 4.0 W/kg"
  ],
  "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/bem.20715
PubMed: 22012556

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