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Oxidative Stress

Protein oxidation under extremely low frequency electric field in guinea pigs. Effect of N-acetyl-L-cysteine treatment.

No Effects Found

Güler G, Türközer Z, Ozgur E, Tomruk A, Seyhan N, Karasu C · 2009

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High-intensity electric field exposure (12 kV/m) didn't cause protein damage in guinea pigs, suggesting everyday power line exposures pose minimal oxidative risk.

Plain English Summary

Summary written for general audiences

Researchers exposed guinea pigs to power line frequency electric fields (12 kV/m for 8 hours daily over 7 days) to study protein damage and whether the antioxidant N-acetyl-L-cysteine could protect against it. The study found no significant protein damage from the electric field exposure alone, though it did reduce a protein synthesis marker in the liver. The antioxidant treatment showed some effects on protein markers, suggesting it may have biological activity in this context.

Why This Matters

This study provides important context for understanding electric field exposures from power lines and electrical infrastructure. The 12 kV/m exposure level is quite high - roughly 100 times stronger than typical residential exposures near power lines, which usually range from 1-100 V/m. The fact that even this intense exposure didn't produce clear protein oxidation damage suggests that electric fields at everyday exposure levels may pose minimal risk for this particular biological endpoint. However, the reduction in liver hydroxyproline levels indicates some biological response occurred, even if traditional oxidative stress markers weren't elevated. What this means for you is that while power frequency electric fields don't appear to cause obvious protein damage at realistic exposure levels, the biological system isn't completely unresponsive to these fields.

Exposure Details

Electric Field
12000 V/m
Source/Device
50 Hz
Exposure Duration
7 days/8 h/day

Exposure Context

This study used 12000 V/m for electric fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

In this study, we detected protein carbonyl content (PCO), advanced oxidation protein products (AOPP) in liver and 3-nitrotyrosine (3-NT) levels in plasma of guinea pigs in order to investigate the effects of N-acetyl-L-cysteine (NAC) administration on oxidative protein damage induced by power frequency electric (E) field (50 Hz, 12 kV/m, 7 days/8 h/day).

We also analyzed hepatic hydroxyproline level to study protein synthesis. According to the findings ...

However, liver hydroxyproline level was significantly diminished in the E field exposure group compa...

Cite This Study
Güler G, Türközer Z, Ozgur E, Tomruk A, Seyhan N, Karasu C (2009). Protein oxidation under extremely low frequency electric field in guinea pigs. Effect of N-acetyl-L-cysteine treatment. Gen Physiol Biophys. 28(1):47-55, 2009a.
Show BibTeX
@article{g_2009_protein_oxidation_under_extremely_2845,
  author = {Güler G and Türközer Z and Ozgur E and Tomruk A and Seyhan N and Karasu C},
  title = {Protein oxidation under extremely low frequency electric field in guinea pigs. Effect of N-acetyl-L-cysteine treatment.},
  year = {2009},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/19390136/},
}
PubMed: 19390136

Cited By (29 papers)

Quick Questions About This Study

A 2009 study found that 12 kV/m electric field exposure (50 Hz) for 8 hours daily over 7 days did not cause significant protein damage in guinea pigs. However, the exposure did reduce hydroxyproline levels in the liver, indicating some biological effects on protein synthesis markers.
Research on guinea pigs showed that N-acetyl-L-cysteine (NAC) treatment affected protein markers when combined with 12 kV/m electric field exposure. The antioxidant demonstrated biological activity in this context, though the electric field alone caused no significant protein oxidation damage.
Guinea pigs exposed to 12 kV/m electric fields for 7 days showed significantly reduced hydroxyproline levels in liver tissue compared to controls. This suggests the power line frequency exposure affected protein synthesis processes, even without causing oxidative protein damage.
A 2009 study used guinea pigs to examine protein oxidation from 12 kV/m electric field exposure over 7 days. The research found measurable changes in liver protein markers, suggesting guinea pigs can detect biological responses to power frequency electric fields.
Research showed that 8 hours daily of 12 kV/m electric field exposure for 7 days reduced liver hydroxyproline levels in guinea pigs. This indicates that protein synthesis markers can be affected within one week of power frequency electric field exposure.