Literature DB >> 32199316

A meta-analysis of in vitro exposures to weak radiofrequency radiation exposure from mobile phones (1990-2015).

Malka N Halgamuge1, Efstratios Skafidas2, Devra Davis3.   

Abstract

To function, mobile phone systems require transmitters that emit and receive radiofrequency signals over an extended geographical area exposing humans in all stages of development ranging from in-utero, early childhood, adolescents and adults. This study evaluates the question of the impact of radiofrequency radiation on living organisms in vitro studies. In this study, we abstract data from 300 peer-reviewed scientific publications (1990-2015) describing 1127 experimental observations in cell-based in vitro models. Our first analysis of these data found that out of 746 human cell experiments, 45.3% indicated cell changes, whereas 54.7% indicated no changes (p = 0.001). Realizing that there are profound distinctions between cell types in terms of age, rate of proliferation and apoptosis, and other characteristics and that RF signals can be characterized in terms of polarity, information content, frequency, Specific Absorption Rate (SAR) and power, we further refined our analysis to determine if there were some distinct properties of negative and positive findings associated with these specific characteristics. We further analyzed the data taking into account the cumulative effect (SAR × exposure time) to acquire the cumulative energy absorption of experiments due to radiofrequency exposure, which we believe, has not been fully considered previously. When the frequency of signals, length and type of exposure, and maturity, rate of growth (doubling time), apoptosis and other properties of individual cell types are considered, our results identify a number of potential non-thermal effects of radiofrequency fields that are restricted to a subset of specific faster-growing less differentiated cell types such as human spermatozoa (based on 19 reported experiments, p-value = 0.002) and human epithelial cells (based on 89 reported experiments, p-value < 0.0001). In contrast, for mature, differentiated adult cells of Glia (p = 0.001) and Glioblastoma (p < 0.0001) and adult human blood lymphocytes (p < 0.0001) there are no statistically significant differences for these more slowly reproducing cell lines. Thus, we show that RF induces significant changes in human cells (45.3%), and in faster-growing rat/mouse cell dataset (47.3%). In parallel with this finding, further analysis of faster-growing cells from other species (chicken, rabbit, pig, frog, snail) indicates that most undergo significant changes (74.4%) when exposed to RF. This study confirms observations from the REFLEX project, Belyaev and others that cellular response varies with signal properties. We concur that differentiation of cell type thus constitutes a critical piece of information and should be useful as a reference for many researchers planning additional studies. Sponsorship bias is also a factor that we did not take into account in this analysis. Crown
Copyright © 2020. Published by Elsevier Inc. All rights reserved.

Entities:  

Keywords:  Apoptosis; Base station; Cytogenetic; Expression; Gene expression; In vitro biological experiments non-ionizing radiation; Mobile phones; Proliferation; Protein; Radiofrequency electromagnetic fields; Specific absorption rate (SAR)

Year:  2020        PMID: 32199316     DOI: 10.1016/j.envres.2020.109227

Source DB:  PubMed          Journal:  Environ Res        ISSN: 0013-9351            Impact factor:   6.498


  5 in total

Review 1.  [Impact of lifestyle and environmental factors on male reproductive health].

Authors:  Hans-Christian Schuppe; Frank-Michael Köhn
Journal:  Urologie       Date:  2022-10-13

2.  Effect of Base Transceiver Station (BTS) waves on some blood factors in domestic pigeons: an experimental study.

Authors:  Hesam Akbari; Sanaz Khoramipour; Seyed Kamal Eshagh Hossaini; Roya Mafigholami; Behnaz Moradighiasabadi
Journal:  J Environ Health Sci Eng       Date:  2021-10-18

3.  Supervised Machine Learning Algorithms for Bioelectromagnetics: Prediction Models and Feature Selection Techniques Using Data from Weak Radiofrequency Radiation Effect on Human and Animals Cells.

Authors:  Malka N Halgamuge
Journal:  Int J Environ Res Public Health       Date:  2020-06-26       Impact factor: 3.390

Review 4.  Radiofrequency Electromagnetic Field Exposure and Apoptosis: A Scoping Review of In Vitro Studies on Mammalian Cells.

Authors:  Stefania Romeo; Olga Zeni; Maria Rosaria Scarfì; Loredana Poeta; Maria Brigida Lioi; Anna Sannino
Journal:  Int J Mol Sci       Date:  2022-02-19       Impact factor: 5.923

5.  Inhibition of Autophagy Negates Radiofrequency-Induced Adaptive Response in SH-SY5Y Neuroblastoma Cells.

Authors:  Anna Sannino; Maria Rosaria Scarfì; Mélody Dufossée; Stefania Romeo; Loredana Poeta; Valerie Prouzet-Mauléon; Muriel Priault; Olga Zeni
Journal:  Int J Mol Sci       Date:  2022-07-29       Impact factor: 6.208

  5 in total

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