Abstract
Electromagnetic fields have been reported to alter electrical activities in the brain and heart. However, there is paucity of information on the potential functional alterations that magnetic fields from mobile phone could cause to the heart. This study investigated heart rate variability (HRV), blood pressure (BP) and lipid profile in Wistar rats exposed to electromagnetic field radiation from a dual transceiver mobile phone (DTrMP). Twenty-one male albino Wistar rats (140-180g) were randomly assigned to two major groups positioned 5m apart as follows: control: no phone (n=7) and treatment group (n=14) continuously exposed to electromagnetic field from Tecno T312 DTrMP 900/1800MHz set in silence mode. Experimental treatment consisted in 10min calls/day, directed to this device for a period of six weeks. Seven animals from the treatment group were allowed to recover for a period of two weeks after exposure. HRV, systolic, diastolic and mean arterial BP were noninvasively investigated, while serum lipid profile and heart tissue nitric oxide (NO) activities were determined using standard procedures. There was significant (p<0.05) increase in systolic, diastolic, mean arterial BP and a decrease in HRV. Serum high density lipoproteins decreased, while total cholesterol, atherogenic indices, and heart NO levels increased significantly in the radiation exposed animals. The alterations observed in exposed animals remained unchanged even after the recovery period. These results suggest that exposure to electromagnetic radiation from dual transceiver mobile phones could be a risk factor to increase in blood pressure.
Highlights
The use of multiple transceiver mobile phones has become rampant in our society with little or no concern about their potential health risks, especially on the cardiovascular system [1]
This study investigated heart rate variability (HRV), blood pressure (BP) and lipid profile in Wistar rats exposed to electromagnetic field radiation from a dual transceiver mobile phone (DTrMP)
The mobile phone was removed from the cage, and the remaining seven animals in the DTrMP electromagnetic field radiation exposed group were kept in the same conditions of initially sacrificed animals for two weeks, after which they were assessed for the experiments listed above
Summary
The use of multiple transceiver mobile phones has become rampant in our society with little or no concern about their potential health risks, especially on the cardiovascular system [1]. The increase in subscription rate is probably related to the emergence of dual transceiver mobile phones. Exposure to electromagnetic fields from multiple transceiver mobile phones has been reported to induce anxiolitic behavior, oxidative stress in the serum, brain and heart tissue in rodents [1, 3]. Chronic exposure to this device with at least 10 min/day exposure rate has been reported to cause disturbance in sleep cycle. This could lead to alterations in cardiovascular system responses [1, 3, 10]
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