Javad Baharara, Farhang Hadad, Alireza Ashraf, Elham Khanderoo,
Volume 11, Issue 2 (6-2008)
Abstract
Introduction: The increasing use of the electromagnetic field producer sets in daily living causes concerns about these waves on human health. The effects of extremely low frequency electromagnetic field (50 Hz) on induction of chromosomal damages on bone marrow erythrocytes of male Balb/C mouse has been investigated in this research. Materials and Methods: This is an experimental study in which the laboratory system of producing electromagnetic with low frequency (50 Hz) was used. Five week old male Balb/C mice were divided into three controls, sham-exposed and experimental groups. The experimental mice exposed were exposed to electromagnetic field (50 gauss) for 4 days (12 hours/day). After treatment, the chromosomal damages were assessed using micronucleus test in polychromatic erythrocytes and resultant quantity data were analyzed using t and Mann-Whitney test. Results: Results showed that frequency of micronucleated polychromatic erythrocytes of experimental group (14/35±1/589) was more than Sham-exposed (8/958±1/049) and control group (7/65±0/768) significantly (p<0/05). Conclusion: Extremely low frequency electromagnetic field (50 Hz) causes chromosomal damages induction in polychromatic erythrocytes of bone marrow male Balb/C mouse.
Savad Baharara, Zahra Zahedifar, Farhang Haddad, Naser Mahdavi Shari,
Volume 15, Issue 1 (4-2012)
Abstract
Background: Green tea due to its antioxidant properties can prevent some types of chromosomal damage. In this study, the effects of green tea on repressing chromosomal aberrations induced by cell phone waves in bone marrow polychromatic erythrocytes of male Balb/C mice were investigated.
Materials and Methods: In this experimental study, 40 adult male Balb/C mice were randomly divided into five groups: control (natural conditions), sham exposed (no exposure to cell phone waves in vitro), experimental group 1 (exposure to cell phone waves), and experimental group 2 (intraperitoneal injection of 100 mg/kg dose of green tea extract for 5 days and exposure to cell phone waves), and experimental group 3 (intraperitoneal injection of 200 mg/kg dose of green tea extract for 5 days and exposure to cell phone waves). Micronucleus test was run in all groups. Data were analyzed by ANOVA and Tukey tests using SPSS software (p<0.05).
Results: The mean number of micronucleus in polychromatic erythrocytes of the sham group (3.47± 0.253) compared with control group (3.43 ± 0.605) did not show a significant difference (p> 0.05), whereas the mean micronucleus frequency in the experimental group 1 (5.64±0.308) increased significantly. However, the mean micronucleus frequency in experimental group 2 (0.92 ± 0.129) and experimental group 3 (0.55 ± 0.046) compared with the control and sham exposed groups decreased significantly (p = 0.001).
Conclusion: Cell phones microwaves (940 MHz) induce chromosomal aberrations in bone marrow polychromatic erythrocytes of male Balb/C mice, but green tea has inhibitory effects and reduces chromosomal damage.
