Neuroprotective effects of extremely low-frequency electromagnetic fields on a Huntington's disease rat model: effects on neurotrophic factors and neuronal density.

Neuroscience · 2012 · Benefit · Low evidence

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BenefitLow evidencePaper 4541

In 3NP-treated rats, ELF-EMF exposure (60 Hz, 0.7 mT) applied for 21 days improved neurological scores and behavior measures, increased neurotrophic factor levels, and reduced oxidative damage and neuronal loss compared with 3NP-treated rats without ELF-EMF.

Study snapshot

PublicationNeuroscience · 2012

Study typeanimal

Reported directionBenefit

Evidence ratingLow

Abstract

There is evidence to suggest that the neuroprotective effect of exposure of extremely low-frequency electromagnetic fields (ELF-EMF) may be due, at least in part, to the effect of these fields on neurotrophic factors levels and cell survival, leading to an improvement in behavior. This study was undertaken to investigate the neuroprotective effects of ELFEF in a rat model of 3-nitropropionic acid (3NP)-induced Huntington's disease. Behavior patterns were evaluated, and changes in neurotrophic factor, cell damage, and oxidative stress biomarker levels were monitored in Wistar rats. Rats were given 3NP over four consecutive days (20 mg/kg body weight), whereas ELFEF (60 Hz and 0.7 mT) was applied over 21 days, starting after the last injection of 3NP. Rats treated with 3NP exhibited significantly different behavior in the open field test (OFT) and the forced swim test (FST), and displayed significant differences in neurotrophic factor levels and oxidative stress biomarkers levels, together with a neuronal damage and diminished neuronal density, with respect neuronal controls. ELFEF improved neurological scores, enhanced neurotrophic factor levels, and reduced both oxidative damage and neuronal loss in 3NP-treated rats. ELFEF alleviates 3NP-induced brain injury and prevents loss of neurons in rat striatum, thus showing considerable potential as a therapeutic tool.

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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 directionbenefit

PopulationWistar rats; 3-nitropropionic acid (3NP)-induced Huntington's disease rat model

Sample sizeNot supplied

ExposureELF · 6e-05 MHz · 21 days (starting after last 3NP injection)

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Outcomes measured

Behavior (open field test, forced swim test)
Neurological scores
Neurotrophic factor levels
Oxidative stress biomarkers
Neuronal damage
Neuronal density / neuronal loss in striatum

Limitations

Sample size not reported in abstract
Exposure source/setup not described in abstract
Specific neurotrophic factors and oxidative stress biomarkers not specified in abstract
Randomization/blinding and other design details not described in abstract

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 6e-05,
    "sar_wkg": null,
    "duration": "21 days (starting after last 3NP injection)"
  },
  "population": "Wistar rats; 3-nitropropionic acid (3NP)-induced Huntington's disease rat model",
  "sample_size": null,
  "outcomes": [
    "Behavior (open field test, forced swim test)",
    "Neurological scores",
    "Neurotrophic factor levels",
    "Oxidative stress biomarkers",
    "Neuronal damage",
    "Neuronal density / neuronal loss in striatum"
  ],
  "main_findings": "In 3NP-treated rats, ELF-EMF exposure (60 Hz, 0.7 mT) applied for 21 days improved neurological scores and behavior measures, increased neurotrophic factor levels, and reduced oxidative damage and neuronal loss compared with 3NP-treated rats without ELF-EMF.",
  "effect_direction": "benefit",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure source/setup not described in abstract",
    "Specific neurotrophic factors and oxidative stress biomarkers not specified in abstract",
    "Randomization/blinding and other design details not described in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "extremely low-frequency electromagnetic fields",
    "ELF-EMF",
    "60 Hz",
    "0.7 mT",
    "Huntington's disease",
    "3-nitropropionic acid",
    "Wistar rats",
    "neurotrophic factors",
    "oxidative stress",
    "neuronal density",
    "neuroprotection"
  ],
  "suggested_hubs": [
    {
      "slug": "elF-emf",
      "weight": 0.6,
      "reason": "Study involves extremely low-frequency EMF exposure (60 Hz, 0.7 mT) in an animal model."
    }
  ]
}

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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: 10.1016/j.neuroscience.2012.02.034
PubMed: 22406415

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