92 research outputs found
The therapeutic effect of a pulsed electromagnetic field on the reproductive patterns of male Wistar rats exposed to a 2.45-GHz microwave field
INTRODUCTION: Environmental exposure to man-made electromagnetic fields has been steadily increasing with the growing demand for electronic items that are operational at various frequencies. Testicular function is particularly susceptible to radiation emitted by electromagnetic fields. OBJECTIVES: This study aimed to examine the therapeutic effects of a pulsed electromagnetic field (100 Hz) on the reproductive systems of male Wistar rats (70 days old). METHODS: The experiments were divided into five groups: microwave sham, microwave exposure (2.45 GHz), pulsed electromagnetic field sham, pulsed electromagnetic field (100 Hz) exposure, and microwave/pulsed electromagnetic field exposure. The animals were exposed for 2 hours/day for 60 days. After exposure, the animals were sacrificed, their sperm was used for creatine and caspase assays, and their serum was used for melatonin and testosterone assays. RESULTS: The results showed significant increases in caspase and creatine kinase and significant decreases in testosterone and melatonin in the exposed groups. This finding emphasizes that reactive oxygen species (a potential inducer of cancer) are the primary cause of DNA damage. However, pulsed electromagnetic field exposure relieves the effect of microwave exposure by inducing Faraday currents. CONCLUSIONS: Electromagnetic fields are recognized as hazards that affect testicular function by generating reactive oxygen species and reduce the bioavailability of androgen to maturing spermatozoa. Thus, microwave exposure adversely affects male fertility, whereas pulsed electromagnetic field therapy is a non-invasive, simple technique that can be used as a scavenger agent to combat oxidative stress
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Mobile phone usage and male infertility in Wistar rats
987-992A significant decrease in protein kinase C and total sperm count along with
increased apoptosis were observed in male Wistar rats exposed to mobile phone
frequencies (2 h/day × 35 days at 0.9 W/kg specific absorption rate). The
results suggest that a reduction in protein kinase activity may be related to
overproduction of reactive oxygen species (ROS) under microwave field exposure.
Decrease in sperm count and an increase in apoptosis may be causative factor
due to mobile radiation exposure leading to infertility
Evaluation of genotoxic effects in male Wistar rats following microwave exposure
586-592Wistar rats (70 days
old) were exposed for 2 h a day for 45 days continuously at 10 GHz [power
density 0.214 mW/cm2, specific absorption rate (SAR) 0.014 W/kg] and 50 GHz (power density 0.86 μW/cm2,
SAR 8.0 ×10-4 W/kg). Micronuclei (MN), reactive oxygen species
(ROS), and antioxidant enzymes activity were estimated in the blood cells and
serum. These radiations induce micronuclei formation and significant increase
in ROS production. Significant changes in the level of serum glutathione
peroxidase, superoxide dismutase and catalase were observed in exposed group as
compared with control group. It is concluded that microwave exposure can be
affective at genetic level. This may be an indication of tumor promotion, which
comes through the overproduction of reactive oxygen species
Fronto-temporo-orbitozygomatic craniotomy and "half-and-half" approach for basilar apex aneurysms
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