Immunotropic effects in cultured human blood mononuclear cells exposed to a 900 MHz pulse-modulated microwave field.

The specific biological effect of electromagnetic field (EMF) remains unknown even though devices present in our daily lives, such as smartphones and Wi-Fi antennae increase the environmental level of electromagnetic radiation. It is said that the human immune system is able to react to discrete environmental stimuli like EMF. To investigate the effect of 900 MHz microwave stimulation on the immune system our research aimed to analyze lymphocyte proliferation and observe and assess the basic immunoregulatory activities using a newly developed and improved anechoic chamber.

The effect of 1800MHz radio-frequency radiation on NMDA receptor subunit NR1 expression and peroxidation in the rat brain in healthy and inflammatory states.

Background: The aim of this study was to evaluate the effect of repeated exposure (5 times for 15min) of 1800MHz radio-frequency radiation (RFR) on N-methyl-d-aspartate receptor subunit NR1 (NMDA-NR1) expression in the brains of rats in a persistent inflammatory state. We also measured the effect of RFR combined with tramadol (TRAM) to determine the potential antioxidant capacity of this agent.

Methods: The effects of the Global System for Mobile Communication (GSM) modulated 1800MHz RFR exposure on the expression and activity of glutamate receptor channels with antioxidative activity in brain tissue was measured using oxygen radical absorbance capacity (ORAC) and electron spin resonance (ESR) detection of the hydroxyl radical generated by the Fenton reaction.

[Risk of neoplastic diseases in conditions of exposure to radio- and microwave fields--epidemiologic investigations].

The review presents current state of knowledge of cancer morbidity in persons exposed to radio- or microwave radiation in the environment or at working posts. The problem of cancer morbidity in persons exposed to microwaves was for many years limited to occupational medicine, but the introduction of mobile telephone system in the 1980s considerably increased the number of persons exposed to this radiation and raised concerns about cancer risks in the users of mobile phones. Cancer risks of microwaves are minor and doubtful, but there exist reliable epidemiologic investigations providing evidence that multiyear occupational exposure and intensive use of mobile phones for more than 10 years may cause the increased morbidity of certain types of neoplasms, mainly brain tumors, as well as hematopoietic and lymphatic malignancies.

[Electromagnetic fields hypersensitivity].

The development of industry, particularly of new technologies in communication systems, gives rise to the number and diversty of electromagnetic field (EMF) sources in the environment. These sources, including power-frequent, radiofrequent and microwaves, make human life richer, safer and easier. But at the same time, there is growing concern about possible health risks connected with EMF exposure.

[Risk of neoplastic diseases in conditions of exposure to power magnetic fields--epidemiologic investigations].

The review paper presents current views on risks of incidence of neoplasms in persons exposed to power magnetic fields (PMFs) 50 Hz in the environment or at working posts. Cancer risks of power magnetic fields are small and doubtful, but there exist confirmed epidemiologic investigations that in children living in homes where PMF intensity exceeds 0.3-0.

[Experimental studies--possibilities and limitations in assessing bioeffects and health risk of electromagnetic fields].

An issue of experimental studies is reviewed in view of their possibilities and limitations in assessing bioeffects and health risk of electromagnetic fields (EMFs). Investigations of bioeffets and their consequences are being performed at different levels of biological organization. Experimental studies involving cellular structures and animals lead mostly to the assessment of mechanisms of EMFs interaction and to the observation of possible bioeffects.

Immunotropic influence of 900 MHz microwave GSM signal on human blood immune cells activated in vitro.

In an earlier study we reported that G(o) phase peripheral blood mononulclear cells (PBMC) exposed to low-level (SAR = 0.18 W/kg) pulse-modulated 1300 MHz microwaves and subsequently cultured, demonstrate changed immune activity (Dabrowski et al., 2003).

[Recent concept of protection of workers and general population against electromagnetic fields in the European countries].

In 1994, guidelines for protection against EM fields were elaborated by the International Commission for Non-Ionizing Radiation Protection (ICNIRP). In 1998, they were slightly modified and became the base for the 1999 recommendation of the UE Commission. The ICNIRP recommendations are based on few selected criteria, and thus provide good protection in the case of short-term exposures to EM fields, but possible effects of EM fields at intensities lower than those admissible by the ICNIPR standards raise still growing doubts.