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The effect of electromagnetic radiation emitted by display screens on cell oxygen metabolism - in vitro studies.

Lewicka M, Henrykowska GA, Pacholski K, Śmigielski J, Rutkowski M, Dziedziczak-Buczyńska M, Buczyński A - Arch Med Sci (2015)

Bottom Line: The changes of selected parameters of oxygen metabolism were measured, i.e. reactive oxygen species concentration, enzymatic activity of antioxidant defence proteins - superoxide dismutase (SOD-1) and catalase (CAT) - and malondialdehyde concentration (MDA).The measurements revealed an increase of the concentration of reactive oxygen species.The most significant change in activity of catalase was observed after 60 min and 220 v/m exposure (from x = 6.28 to x = 4.15).

View Article: PubMed Central - PubMed

Affiliation: Department of Epidemiology and Public Health, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Introduction: Research studies carried out for decades have not solved the problem of the effect of electromagnetic radiation of various frequency and strength on the human organism. Due to this fact, we decided to investigate the changes taking place in human blood platelets under the effect of electromagnetic radiation (EMR) emitted by LCD monitors.

Material and methods: The changes of selected parameters of oxygen metabolism were measured, i.e. reactive oxygen species concentration, enzymatic activity of antioxidant defence proteins - superoxide dismutase (SOD-1) and catalase (CAT) - and malondialdehyde concentration (MDA). A suspension of human blood platelets was exposed to electromagnetic radiation of 1 kHz frequency and 150 V/m and 220 V/m intensity for 30 and 60 min. The level of changes of the selected parameters of oxidative stress was determined after the exposure and compared to the control samples (not exposed).

Results: The measurements revealed an increase of the concentration of reactive oxygen species. The largest increase of ROS concentration vs. the control sample was observed after exposure to EMF of 220 V/m intensity for 60 min (from x = 54.64 to x = 72.92). The measurement of MDA concentration demonstrated a statistically significant increase after 30-min exposure to an EMF of 220 V/m intensity in relation to the initial values (from x = 3.18 to x = 4.41). The enzymatic activity of SOD-1 decreased after exposure (the most prominent change was observed after 60-min and 220 V/m intensity from x = 3556.41 to x = 1084.83). The most significant change in activity of catalase was observed after 60 min and 220 v/m exposure (from x = 6.28 to x = 4.15).

Conclusions: The findings indicate that exposure to electromagnetic radiation of 1 kHz frequency and 150 V/m and 220 V/m intensity may cause adverse effects within blood platelets' oxygen metabolism and thus may lead to physiological dysfunction of the organism.

No MeSH data available.


Related in: MedlinePlus

Laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens
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Figure 0001: Laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens

Mentions: In a laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens (1 kHz, 150 V/m, 220 V/m), a flat capacitor was the source of the electromagnetic field (Figure 1). Requirements of the TCO (the Swedish Confederation of Professional Employees) and MPR (the National Board for Measurement and Testing) specify strict conditions for the measurement of exposure. The authors measured the field by the measurement procedure at the location of points placed in front of the monitor.


The effect of electromagnetic radiation emitted by display screens on cell oxygen metabolism - in vitro studies.

Lewicka M, Henrykowska GA, Pacholski K, Śmigielski J, Rutkowski M, Dziedziczak-Buczyńska M, Buczyński A - Arch Med Sci (2015)

Laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4697066&req=5

Figure 0001: Laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens
Mentions: In a laboratory stand designed for reconstruction of the parameters of electromagnetic radiation generated by display screens (1 kHz, 150 V/m, 220 V/m), a flat capacitor was the source of the electromagnetic field (Figure 1). Requirements of the TCO (the Swedish Confederation of Professional Employees) and MPR (the National Board for Measurement and Testing) specify strict conditions for the measurement of exposure. The authors measured the field by the measurement procedure at the location of points placed in front of the monitor.

Bottom Line: The changes of selected parameters of oxygen metabolism were measured, i.e. reactive oxygen species concentration, enzymatic activity of antioxidant defence proteins - superoxide dismutase (SOD-1) and catalase (CAT) - and malondialdehyde concentration (MDA).The measurements revealed an increase of the concentration of reactive oxygen species.The most significant change in activity of catalase was observed after 60 min and 220 v/m exposure (from x = 6.28 to x = 4.15).

View Article: PubMed Central - PubMed

Affiliation: Department of Epidemiology and Public Health, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Introduction: Research studies carried out for decades have not solved the problem of the effect of electromagnetic radiation of various frequency and strength on the human organism. Due to this fact, we decided to investigate the changes taking place in human blood platelets under the effect of electromagnetic radiation (EMR) emitted by LCD monitors.

Material and methods: The changes of selected parameters of oxygen metabolism were measured, i.e. reactive oxygen species concentration, enzymatic activity of antioxidant defence proteins - superoxide dismutase (SOD-1) and catalase (CAT) - and malondialdehyde concentration (MDA). A suspension of human blood platelets was exposed to electromagnetic radiation of 1 kHz frequency and 150 V/m and 220 V/m intensity for 30 and 60 min. The level of changes of the selected parameters of oxidative stress was determined after the exposure and compared to the control samples (not exposed).

Results: The measurements revealed an increase of the concentration of reactive oxygen species. The largest increase of ROS concentration vs. the control sample was observed after exposure to EMF of 220 V/m intensity for 60 min (from x = 54.64 to x = 72.92). The measurement of MDA concentration demonstrated a statistically significant increase after 30-min exposure to an EMF of 220 V/m intensity in relation to the initial values (from x = 3.18 to x = 4.41). The enzymatic activity of SOD-1 decreased after exposure (the most prominent change was observed after 60-min and 220 V/m intensity from x = 3556.41 to x = 1084.83). The most significant change in activity of catalase was observed after 60 min and 220 v/m exposure (from x = 6.28 to x = 4.15).

Conclusions: The findings indicate that exposure to electromagnetic radiation of 1 kHz frequency and 150 V/m and 220 V/m intensity may cause adverse effects within blood platelets' oxygen metabolism and thus may lead to physiological dysfunction of the organism.

No MeSH data available.


Related in: MedlinePlus