4
Apr
2013

Effects of chronic exposure to radiofrequency electromagnetic fields on energy balance in developing rats

Environ Sci Pollut Res Int. 2012 Nov 10. [Epub ahead of print]

Pelletier A, Delanaud S, Décima P, Thuroczy G, de Seze R, Cerri M, Bach V, Libert JP, Loos N.
Source

PériTox Laboratory (EA 4285-UMI01), Faculty of Medicine, Jules Verne University of Picardy (UPJV), 3 rue des Louvels, CS 13602, 80036, Amiens cedex 1, France.
Abstract

The effects of radiofrequency electromagnetic fields (RF-EMF) on the control of body energy balance in developing organisms have not been studied, despite the involvement of energy status in vital physiological functions. We examined the effects of chronic RF-EMF exposure (´, 1 V?m(-1)) on the main functions involved in body energy homeostasis (feeding behaviour, sleep and thermoregulatory processes). Thirteen juvenile male Wistar rats were exposed to continuous RF-EMF for 5 weeks at 24 °C of air temperature (T (a)) and compared with 11 non-exposed animals. Hence, at the beginning of the 6th week of exposure, the functions were recorded at T (a) of 24 °C and then at 31 °C. We showed that the frequency of rapid eye movement sleep episodes was greater in the RF-EMF-exposed group, independently of T (a) (+42.1 % at 24 °C and +31.6 % at 31 °C). The other effects of RF-EMF exposure on several sleep parameters were dependent on T (a). At 31 °C, RF-EMF-exposed animals had a significantly lower subcutaneous tail temperature (-1.21 °C) than controls at all sleep stages; this suggested peripheral vasoconstriction, which was confirmed in an experiment with the vasodilatator prazosin. Exposure to RF-EMF also increased daytime food intake (+0.22 g?h(-1)). Most of the observed effects of RF-EMF exposure were dependent on T (a). Exposure to RF-EMF appears to modify the functioning of vasomotor tone by acting peripherally through ?-adrenoceptors. The elicited vasoconstriction may restrict body cooling, whereas energy intake increases. Our results show that RF-EMF exposure can induce energy-saving processes without strongly disturbing the overall sleep pattern.

http://www.ncbi.nlm.nih.gov/pubmed/23143821

PMID: 23143821
[PubMed-as supplied by publisher]


New study finds biological effects of electromagnetic waves! The results of this experiment ''provide an additional argument for the thesis that electromagnetic fields can have an effect in humans, even at low intensity'', as from mobile phone antennas, and in children during their growth and development!

http://www.lemonde.fr/sante/article/2013/04/04/une-etude-conclut-aux-effets-biologiques-des-ondes-electromagnetiques_3153800_1651302.html

Study finds biological effects of electromagnetic waves


Olle Johansson
The Experimental Dermatology Unit
Department of Neuroscience
Karolinska Institute
171 77 Stockholm
Sweden

--------

French articles:

http://www.futura-sciences.com/fr/news/t/biologie-3/d/les-ondes-electromagnetiques-mettent-les-rats-en-mode-economie-denergie_45680/ [ http://tinyurl.com/cr2b83o ]

http://www.lemonde.fr/sante/article/2013/04/04/une-etude-conclut-aux-effets-biologiques-des-ondes-electromagnetiques_3153800_1651302.html


André Fauteux



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