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Trace elements homeostasis in brain exposed to 900 MHz RFW emitted from a BTS-antenna model and the protective role of vitamin E

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Azimzadeh M, Jelodar G · 2020

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Exposure to 900 MHz radiofrequency waves altered brain trace element homeostasis in rats, and vitamin E supplementation partially mitigated these changes.

Plain English Summary

Summary written for general audiences

This study investigated how 900 MHz radiofrequency exposure affects trace element concentrations (iron, copper, zinc, manganese) in rat brain tissue and whether vitamin E supplementation could provide protection. The researchers found that radiofrequency exposure disrupted the balance of these trace elements, with vitamin E pre-treatment showing partial protective effects, particularly for iron, copper, and manganese levels.

Why This Matters

Trace elements play critical roles in neurological function and antioxidant defense, making their homeostasis important for brain health. This study contributes to the literature on potential mechanisms by which radiofrequency exposure might affect the central nervous system, though results from rodent models require careful consideration before extrapolation to human health effects.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Azimzadeh M, Jelodar G (2020). Trace elements homeostasis in brain exposed to 900 MHz RFW emitted from a BTS-antenna model and the protective role of vitamin E.
Show BibTeX
@article{azimzadeh_m_jelodar_g_ce2304,
  author = {Azimzadeh M and Jelodar G},
  title = {Trace elements homeostasis in brain exposed to 900 MHz RFW emitted from a BTS-antenna model and the protective role of vitamin E},
  year = {2020},
  doi = {10.1177/0748233720973143},
  
}
DOI: 10.1177/0748233720973143PubMed: 32279387

Quick Questions About This Study

Yes, this study found that prenatal exposure to 900 MHz radiofrequency waves caused more severe learning and memory impairments in rat offspring compared to postnatal exposure, along with reduced nerve cell density in the hippocampus.
Pregnant rats were exposed to 900 MHz radiofrequency waves throughout their entire gestational period, while postnatal groups were exposed for either 2 or 4 hours daily during the first 21 days of life.
Researchers used passive avoidance learning tests in a shuttle box, measuring how long rats stayed in a light area to avoid punishment. All EMF-exposed groups showed impaired performance compared to unexposed controls.
The study found that 4 hours daily postnatal exposure caused reduced hippocampal nerve cell density, while 2 hours daily did not show this tissue change, though both durations impaired learning and memory performance.
The hippocampus showed reduced density of pyramidal cells in both prenatally exposed rats and those exposed 4 hours daily after birth. The hippocampus is crucial for learning and memory formation.