Influence of electromagnetic field (1800 MHz) on lipid peroxidation in brain, blood, liver and kidney in rats

Int J Occup Med Environ Health · 2015 · Mixed · Low evidence

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MixedLow evidencePaper 2716

Study snapshot

PublicationInt J Occup Med Environ Health · 2015

Study typeanimal

Reported directionMixed

Evidence ratingLow

Abstract

Objectives: The aim of this study is the evaluation of the influence of repeated (5 times for 15 min) exposure to electromagnetic field (EMF) of 1800 MHz frequency on tissue lipid peroxidation (LPO) both in normal and inflammatory state, combined with analgesic treatment. Material and methods: The concentration of malondialdehyde (MDA) as the end-product of the lipid peroxidation (LPO) was estimated in blood, liver, kidneys, and brain of Wistar rats, both healthy and those with complete Freund's adjuvant (CFA)-induced persistent paw inflammation. Results: The slightly elevated levels of the MDA in blood, kidney, and brain were observed among healthy rats in electromagnetic field (EMF)-exposed groups, treated with tramadol (TRAM/EMF and exposed to the EMF). The malondialdehyde remained at the same level in the liver in all investigated groups: the control group (CON), the exposed group (EMF), treated with tramadol (TRAM) as well as exposed to and treated with tramadol (TRAM/EMF). In the group of animals treated with the complete Freund's adjuvant (CFA) we also observed slightly increased values of the MDA in the case of the control group (CON) and the exposed groups (EMF and TRAM/EMF). The MDA values concerning kidneys remained at the same levels in the control, exposed, and not-exposed group treated with tramadol. Results for healthy rats and animals with inflammation did not differ significantly. Conclusions: The electromagnetic field exposure (EMF), applied in the repeated manner together with opioid drug tramadol (TRAM), slightly enhanced lipid peroxidation level in brain, blood, and kidneys.

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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 directionmixed

PopulationWistar rats (healthy and CFA-induced persistent paw inflammation)

Sample sizeNot supplied

ExposureRF · 1800 MHz · Repeated exposure 5 times for 15 min

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Among healthy rats, slightly elevated MDA levels in blood, kidney, and brain were observed in EMF-exposed groups, including those treated with tramadol. Liver MDA remained at the same level across all groups. In CFA-treated rats, slightly increased MDA values were also observed in control and exposed groups; kidney MDA remained similar across control/exposed/tramadol groups. Results for healthy rats and animals with inflammation did not differ significantly.

Outcomes measured

Lipid peroxidation (LPO) via malondialdehyde (MDA) levels in blood, liver, kidneys, brain

Limitations

Sample size not reported in abstract
Exposure metric (e.g., SAR/power density) not reported in abstract
Statistical details and effect sizes not provided; described as 'slightly' elevated and 'did not differ significantly' between healthy vs inflammatory states
Potential confounding/interaction with tramadol and inflammatory model complicates attribution to EMF alone

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": null,
    "frequency_mhz": 1800,
    "sar_wkg": null,
    "duration": "Repeated exposure 5 times for 15 min"
  },
  "population": "Wistar rats (healthy and CFA-induced persistent paw inflammation)",
  "sample_size": null,
  "outcomes": [
    "Lipid peroxidation (LPO) via malondialdehyde (MDA) levels in blood, liver, kidneys, brain"
  ],
  "main_findings": "Among healthy rats, slightly elevated MDA levels in blood, kidney, and brain were observed in EMF-exposed groups, including those treated with tramadol. Liver MDA remained at the same level across all groups. In CFA-treated rats, slightly increased MDA values were also observed in control and exposed groups; kidney MDA remained similar across control/exposed/tramadol groups. Results for healthy rats and animals with inflammation did not differ significantly.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure metric (e.g., SAR/power density) not reported in abstract",
    "Statistical details and effect sizes not provided; described as 'slightly' elevated and 'did not differ significantly' between healthy vs inflammatory states",
    "Potential confounding/interaction with tramadol and inflammatory model complicates attribution to EMF alone"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "1800 MHz",
    "RF-EMF",
    "lipid peroxidation",
    "malondialdehyde",
    "oxidative stress",
    "brain",
    "blood",
    "kidney",
    "liver",
    "Wistar rats",
    "tramadol",
    "complete Freund's adjuvant"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.35,
      "reason": "Published in an occupational/environmental health journal and involves RF exposure, though the exposure source/context is not specified in the abstract."
    }
  ]
}

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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: 10.13075/ijomeh.1896.00255
PubMed: 26216313

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