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Oostenrijk: Stressenzymen bij blootstelling aan zendmasten voor mobiele telefonie.    
Ga naar overzicht berichten in: Onderzoeken

Oostenrijk: Stressenzymen bij blootstelling aan zendmasten voor mobiele telefonie.
vrijdag, 08 oktober 2010 - Dossier: Algemeen


Gerelateerd artikel: pdf/gsmstudie_salzburg_2007.pdf .

Bron: Biomedical and Environmental Science. 2010 Jun;23(3):199-207.

Effects of Exposure to GSM Mobile Phone Base Station Signals on Salivary Cortisol, Alpha-Amylase, and Immunoglobulin A.

Augner C, Hacker GW, Oberfeld G, Florian M, Hitzl W, Hutter J, Pauser G.

IGGMB-Research Institute for Frontier Questions of Medicine and Biotechnology, Salzburg Federal Hospital-University Clinics of the Paracelsus Medical Private University, Salzburg Federal Clinics (SALK), Salzburg, Austria.

Abstract
OBJECTIVE: The present study aimed to test whether exposure to radiofrequency electromagnetic fields (RF-EMF) emitted by mobile phone base stations may have effects on salivary alpha-amylase, immunoglobulin A (IgA), and cortisol levels.

METHODS: Fifty seven participants were randomly allocated to one of three different experimental scenarios (22 participants to scenario 1, 26 to scenario 2, and 9 to scenario 3). Each participant went through five 50-minute exposure sessions. The main RF-EMF source was a GSM-900-MHz antenna located at the outer wall of the building. In scenarios 1 and 2, the first, third, and fifth sessions were ''low'' (median power flux density 5.2 muW/m(2)) exposure. The second session was ''high'' (2126.8 muW/m(2)), and the fourth session was ''medium'' (153.6 muW/m(2)) in scenario 1, and vice versa in scenario 2. Scenario 3 had four ''low'' exposure conditions, followed by a ''high'' exposure condition. Biomedical parameters were collected by saliva samples three times a session. Exposure levels were created by shielding curtains.

RESULTS:
In scenario 3 from session 4 to session 5 (from ''low'' to ''high'' exposure), an increase of cortisol was detected, while in scenarios 1 and 2, a higher concentration of alpha-amylase related to the baseline was identified as compared to that in scenario 3. IgA concentration was not significantly related to the exposure.

CONCLUSIONS:
RF-EMF in considerably lower field densities than ICNIRP-guidelines may influence certain psychobiological stress markers.

PMID: 20708499

Voor het originele abstract zie:
www.ncbi.nlm.nih.gov/pubmed/20708499?dopt=Abstract .

Voor eerdere publicaties in de pers over dit belangrijke onderzoek zie:
Berichten%20Internationaal/5014



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