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Reproductive Health

HSP70 expression in human trophoblast cells exposed to different 1.8 Ghz mobile phone signals.

No Effects Found

Franzellitti S, Valbonesi P, Contin A, Biondi C, Fabbri E. · 2008

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Mobile phone radiation altered genetic activity in human placental cells without changing stress proteins, revealing hidden cellular responses.

Plain English Summary

Summary written for general audiences

Researchers exposed human placental cells to 1.8 GHz mobile phone radiation for up to 24 hours to study stress protein responses. While the cells showed no changes in stress proteins at the protein level, they found subtle changes in genetic activity (mRNA) that varied depending on the type of signal modulation used. This suggests that cellular responses to RF radiation may be more complex and nuanced than previously detected.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 217 Hz - 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 217 Hz - 1.80 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

The study examined exposure from: 1.8 GHz (CW) and GSM-217Hz Duration: 4 to 24 hours

Study Details

The aim of this study is to investigate HSP70 expression in human trophoblast cells exposed to different 1.8 Ghz mobile phone signals.

In the current study, HSP70 gene and protein expression were evaluated in cells of the human trophob...

Inducible HSP70 protein expression was not modified by high-frequency EMFs under any condition teste...

The present results suggest that the expression analysis for multiple transcripts, though encoding the same or similar protein products, can be highly informative and may account for subtle changes not detected at the protein level.

Cite This Study
Franzellitti S, Valbonesi P, Contin A, Biondi C, Fabbri E. (2008). HSP70 expression in human trophoblast cells exposed to different 1.8 Ghz mobile phone signals. Radiat Res. 170(4):488-497, 2008.
Show BibTeX
@article{s_2008_hsp70_expression_in_human_3025,
  author = {Franzellitti S and Valbonesi P and Contin A and Biondi C and Fabbri E.},
  title = {HSP70 expression in human trophoblast cells exposed to different 1.8 Ghz mobile phone signals.},
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/19024656/},
}
PubMed: 19024656

Cited By (28 papers)

Quick Questions About This Study

A 2008 study found that 1.8 GHz mobile phone radiation did not significantly affect stress protein levels in human placental cells, even after 24 hours of exposure. However, researchers detected subtle changes in genetic activity that varied depending on signal modulation type.
Research on human trophoblast cells showed that GSM-217Hz signals increased certain stress gene transcripts after 24 hours, while overall stress protein levels remained unchanged. This suggests cellular responses to phone radiation may be more complex than previously detected.
HSP70 stress proteins in human placental cells showed no changes when exposed to 1.8 GHz mobile phone radiation for up to 24 hours. However, specific HSP70 gene transcripts displayed subtle variations depending on the signal modulation used.
Yes, a study on human placental cells found that GSM-217Hz and GSM-Talk signals produced different cellular responses at the genetic level, even though both used 1.8 GHz frequency. This indicates signal modulation may influence biological effects.
Research suggests that detecting cellular responses to mobile phone radiation may require analyzing multiple gene transcripts rather than just protein levels. A 2008 study found genetic changes in placental cells that weren't visible at the protein level.