Do magnetic fields related to submarine power cables affect the functioning of a common bivalve?

2022 · Harm · Low evidence

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HarmLow evidencePaper 766

Study snapshot

Publicationmanual · 2022

Study typeanimal

Reported directionHarm

Evidence ratingLow

Abstract

Do magnetic fields related to submarine power cables affect the functioning of a common bivalve? Jakubowska-Lehrmann M, Białowąs M, Otremba Z, Hallmann A, Śliwińska-Wilczewska S, Urban-Malinga B. Do magnetic fields related to submarine power cables affect the functioning of a common bivalve? Mar Environ Res. 2022 Jul 11;179:105700. doi: 10.1016/j.marenvres.2022.105700. Abstract The aim of the study was to determine the effect of static magnetic field (SMF) and electromagnetic field (EMF), of values usually recorded near submarine cables, on the bioenergetics, oxidative stress, and neurotoxicity in the cockle Cerastoderma glaucum. Bivalves maintained a positive energy balance, but the filtration rate and energy available for individual production were significantly lower in SMF-exposed animals compared to the control treatment. No changes in the respiration were noted but ammonia excretion rate was significantly lower after exposure to EMF. Changes in the activities of antioxidant enzymes and the lipid peroxidation were not observed; however, exposure to both fields resulted in increased protein carbonylation. After exposure to EMF a significant inhibition of acetylcholinesterase activity was observed. As the present study for the first time revealed the oxidative damage and neurotoxicity in marine invertebrate after exposure to artificial magnetic fields, the need for further research is highlighted. sciencedirect.com

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 typeanimal

Effect directionharm

PopulationCockle (Cerastoderma glaucum)

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

The study assessed effects of static magnetic field (SMF) and electromagnetic field (EMF) at levels usually recorded near submarine cables on cockle bioenergetics, oxidative stress, and neurotoxicity. Filtration rate and energy available for individual production were significantly lower in SMF-exposed animals versus control; respiration did not change. Ammonia excretion was significantly lower after EMF exposure; antioxidant enzymes and lipid peroxidation did not change, but protein carbonylation increased after both fields, and acetylcholinesterase activity was significantly inhibited after EMF exposure.

Outcomes measured

bioenergetics
filtration rate
energy available for individual production
respiration
ammonia excretion rate
oxidative stress
antioxidant enzyme activity
lipid peroxidation
protein carbonylation
neurotoxicity
acetylcholinesterase activity

Limitations

Sample size not reported in abstract
Exposure characteristics (field strengths, frequencies, and duration) not reported in abstract
Species-specific animal/invertebrate model; generalizability to other organisms not established in abstract

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": null,
    "source": "submarine power cables",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Cockle (Cerastoderma glaucum)",
  "sample_size": null,
  "outcomes": [
    "bioenergetics",
    "filtration rate",
    "energy available for individual production",
    "respiration",
    "ammonia excretion rate",
    "oxidative stress",
    "antioxidant enzyme activity",
    "lipid peroxidation",
    "protein carbonylation",
    "neurotoxicity",
    "acetylcholinesterase activity"
  ],
  "main_findings": "The study assessed effects of static magnetic field (SMF) and electromagnetic field (EMF) at levels usually recorded near submarine cables on cockle bioenergetics, oxidative stress, and neurotoxicity. Filtration rate and energy available for individual production were significantly lower in SMF-exposed animals versus control; respiration did not change. Ammonia excretion was significantly lower after EMF exposure; antioxidant enzymes and lipid peroxidation did not change, but protein carbonylation increased after both fields, and acetylcholinesterase activity was significantly inhibited after EMF exposure.",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure characteristics (field strengths, frequencies, and duration) not reported in abstract",
    "Species-specific animal/invertebrate model; generalizability to other organisms not established in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "submarine power cables",
    "static magnetic field",
    "electromagnetic field",
    "Cerastoderma glaucum",
    "bivalve",
    "bioenergetics",
    "oxidative damage",
    "protein carbonylation",
    "acetylcholinesterase",
    "neurotoxicity"
  ],
  "suggested_hubs": [
    {
      "slug": "submarine-power-cables",
      "weight": 0.95,
      "reason": "Study explicitly examines magnetic/electromagnetic fields recorded near submarine cables and biological effects in a marine bivalve."
    }
  ]
}

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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.marenvres.2022.105700
PubMed: Not supplied

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