Department of Human Physiology, College of Medicine and Health Sciences, Federal University Dutse, Dutse, Nigeria.
Department of Physiology, College of Medicine,University of Ibadan, Ibadan, Nigeria.
J Basic Clin Physiol Pharmacol. 2020 Nov 4;32(5):951-957. doi: 10.1515/jbcpp-2020-0047.
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 (140-180 g) were randomly assigned to two major groups positioned 5 m apart as follows: control: no phone (n=7) and treatment group (n=14) continuously exposed to electromagnetic field from Tecno T312 DTrMP 900/1800 MHz set in silence mode. Experimental treatment consisted in 10 min 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.
已有报道称，电磁场会改变大脑和心脏的电活动。然而，关于移动电话磁场可能对心脏造成的潜在功能改变的信息却很少。本研究调查了暴露于双收发移动电话（DTrMP）电磁场的 Wistar 大鼠的心率变异性（HRV）、血压（BP）和血脂谱。
将 21 只雄性白化 Wistar 大鼠（140-180g）随机分为两组，每组 7 只，相隔 5m 放置如下：对照组：无手机（n=7）和治疗组（n=14），连续暴露于 Tecno T312 DTrMP 900/1800MHz 的电磁场中，处于静音模式。实验治疗包括每天 10 分钟的通话，持续六周，指向该设备。治疗组的 7 只动物在暴露后进行了两周的恢复期。使用标准程序非侵入性地研究 HRV、收缩压、舒张压和平均动脉压，同时使用标准程序测定血清脂质谱和心脏组织一氧化氮（NO）活性。
与对照组相比，治疗组大鼠的收缩压、舒张压、平均动脉压显著升高（p<0.05），HRV 降低。血清高密度脂蛋白降低，而总胆固醇、动脉粥样硬化指数和心脏 NO 水平在辐射暴露动物中显著升高。暴露动物的这些变化在恢复期后仍未改变。
这些结果表明，双收发移动电话产生的电磁场辐射可能是导致血压升高的一个危险因素。
