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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

Concentration of reactive oxygen species in blood platelets exposed to electromagnetic radiation dependent on the intensity and exposure time (n = 36)
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Figure 0002: Concentration of reactive oxygen species in blood platelets exposed to electromagnetic radiation dependent on the intensity and exposure time (n = 36)

Mentions: In the in vitro study, oxygen activity in blood platelets, expressed by the concentration of reactive oxygen species, stimulated by the electromagnetic field generated by monitor screens, increased significantly compared to the control values (Figure 2). 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). After exposure to EMF of 150 V/m intensity the concentration of ROS increased in relation to the initial values from x = 54.64 to x = 61.06 (30-min exposure) and to x = 68.10 (60-min exposure). After 30-min exposure to the field of 220 V/m intensity the concentration of ROS increased from x = 54.64 to x = 67.36 (Table I).


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)

Concentration of reactive oxygen species in blood platelets exposed to electromagnetic radiation dependent on the intensity and exposure time (n = 36)
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 0002: Concentration of reactive oxygen species in blood platelets exposed to electromagnetic radiation dependent on the intensity and exposure time (n = 36)
Mentions: In the in vitro study, oxygen activity in blood platelets, expressed by the concentration of reactive oxygen species, stimulated by the electromagnetic field generated by monitor screens, increased significantly compared to the control values (Figure 2). 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). After exposure to EMF of 150 V/m intensity the concentration of ROS increased in relation to the initial values from x = 54.64 to x = 61.06 (30-min exposure) and to x = 68.10 (60-min exposure). After 30-min exposure to the field of 220 V/m intensity the concentration of ROS increased from x = 54.64 to x = 67.36 (Table I).

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