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Shokrollahi S, Ghanati F, Sajedi RH, Sharifi M

Bioeffects Seen

Authors not listed · 2018

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Static magnetic fields alter iron-containing proteins in plants, with different field strengths producing opposite biological effects.

Plain English Summary

Summary written for general audiences

Researchers exposed soybean plants to static magnetic fields of 20 and 30 mT (milliTesla) for 5 hours daily over 5 days, finding that different field strengths produced opposite effects on iron-related proteins and enzymes. The study also tested purified proteins from animal sources, discovering that magnetic fields altered protein structure and function without changing their basic molecular backbone.

Why This Matters

This research reveals something fascinating about how static magnetic fields interact with biological systems through iron-containing proteins. The fact that 20 mT and 30 mT produced opposite effects suggests there are specific thresholds where magnetic fields flip from one biological response to another. What makes this particularly relevant is that these field strengths aren't exotic laboratory curiosities. MRI machines operate at 15,000-30,000 mT, but even some industrial equipment and magnetic therapy devices can generate fields in the range tested here. The finding that magnetic fields altered protein structure and activity without changing the basic molecular framework helps explain how EMF exposure might influence biological processes in subtle but significant ways. This iron-mediated pathway could be one mechanism by which magnetic field exposure affects living systems, adding another piece to our understanding of EMF bioeffects.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2018). Shokrollahi S, Ghanati F, Sajedi RH, Sharifi M.
Show BibTeX
@article{shokrollahi_s_ghanati_f_sajedi_rh_sharifi_m_ce4213,
  author = {Unknown},
  title = {Shokrollahi S, Ghanati F, Sajedi RH, Sharifi M},
  year = {2018},
  doi = {10.1016/j.jplph.2018.04.018},
  
}
DOI: 10.1016/j.jplph.2018.04.018PubMed: 29778670

Quick Questions About This Study

Yes, 20 mT static magnetic field exposure decreased iron transporter gene expression, ferrous content, and both ferritin and catalase protein levels and activity in soybean plants during the 5-day study period.
Yes, 30 mT magnetic field exposure produced the opposite response from 20 mT treatment, increasing rather than decreasing iron-related protein expression and activity in the same soybean plants.
Research shows static magnetic fields altered protein tertiary structure, size and activity while leaving the basic secondary structure intact, suggesting EMF can modify protein function through structural changes.
The study suggests the number of iron atoms in proteins influences how static magnetic fields affect their structure and function, with iron acting as a mediator for magnetic field effects.
Changes in iron-related protein expression and activity occurred after 5 days of magnetic field exposure at 5 hours per day in the soybean plant study.