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Öğe Bioelectrical parameters of people exposed to radiofrequency in workplace and houses provided to workers(Diagnosis Press Ltd, 2008) Dasdag, S.; Akdag, M. Z.; Celik, M. S.The effects of radiofrequency (RF) and microwave radiation in workplace have been a subject of continuing of the major exposed groups is workers and their families who have been working and living in houses provided to employees of these stations. Therefore, the present study intended to investigate the effect of RF emitted from antenno of 1062 kHz medium wave radio-broadcating station on bioelectrical parameters of workers and their families living in houses provided to employees of these stations. of these stations. The studv was carried out on 20 men working in radio-broadcasting station, 11 women and 30 voluntary children (Boy: 15. Girl: 13) living in houses provided to workers of the station. Five bioelectrical parameters such os resistance, reactance, phase angle, body capacitance and basal metabolic rate (BMR) were measured. E.field and power density inside houses was between 0.48 V/m 7 - 2.86 V/m and 0.0001 mW/cm(2) - 0.0023 mW/cm(2) respectively. However the average E.field and power density in the plaving area of the children was 12.75 V/m and 0.0436 mW/cm(2) E.field crud power density in the control room desk and around the workplace was 4.04 V/m, 0.0042 mW/cm(2) and 31.88 V/m. 0.348 mW/cm(2) respectively. The results of this study showed that the parameters such as phase angle (degrees), body capacitance (pF) and reactance (Omega) of girl group were decreased according to control group (p<0.01). In conclusion, some bioelectrical parameters of the children who have been living in houses provided to employees of radio broadcasting stations can he affected by radio-frequencies.Öğe Effect of extremely low frequency magnetic field on enamel microhardness in rats(Ariesdue Srl, 2011) Kargul, B.; Yavuz, I.; Akdag, M. Z.; Durhan, A.Aim The potential effects on human health of extremely low frequency magnetic field (ELF-MF) are of considerable concern. In the present study it was investigated the effect of long term ELF-MF exposure on microhardness of rat teeth. Materials and methods Thirty male Sprague-Dawley rats were divided into three groups. The first and second experimental groups (n=10) were exposed to 100 mu T and 500 mu T ELF-MF during 10 months, 2 hours a day respectively For the control group, nothing was applied to the rats and they completed their life cycle in the cage during the study period. After ELF-MF exposure, microhardness of enamel surface was determined for each group. Results The decrease in microhardness in the second experimental group was found to be statistically significant compared to the control group (P<0.05). However, no statistical difference was found between the first and second experimental groups (P>0.05). Conclusion From the results it can be concluded that 500 mu T level of magnetic field strengths may have a certain negative effect on enamel mineralisation. Further investigations are necessary to analyse the effect of ELF-MF on teeth.Öğe EFFECT OF LONG TERM MOBILE PHONE EXPOSURE ON OXIDATIVE-ANTIOXIDATIVE PROCESSES AND NITRIC OXIDE IN RATS(Diagnosis Press Ltd, 2008) Dasdag, S.; Bilgin, H. M.; Akdag, M. Z.; Celik, H.; Aksen, F.The effects of radiation emitted from cellular phones oil humans are an emerging area of investigation. The previous studies have shown the role of oxidative stress and NO at radiofrequency exposed rats. Therefore, the purpose of this study was to investigate the effect of microwave /radio/frequency emitted from mobile phones and its possible oxidative damage. Wistar Albino rats were divided into three groups as exposure, sham and cage control. Rats in exposure group were exposed to 900 MHz microwave radiation (0.0782 in W / cm(2)) in a carousel for 2 hours/7 days in a week during ten months. The same process was applied to sham group but the generator was turned off Rats in cage control group were kept ill cage only during the study The levels of catalase (CAT), myeloperoxidase (MPO), malondialdehyde (MDA), total antioxidant capacity (TA C), total oxidant status (TOS), oxidative stress index (OSI) in liver and nitric oxide (NO) levels in serum were determined to demonstrate the role of oxidative mechanisms. The increase of nitric oxide levels in exposure and sham groups were found significant compared to cage control group (p<0.01, p<0.05). Although serum NO levels increased in exposed rats, the difference between exposure and sham groups was not significant (p>0.05). MDA and TOS levels in liver tissue were found higher in exposed group compared to sham and cage control group (p<0.05). However, no significant alterations were found in other endpoints such as CAT MPO, TA C and OSI. In this study we showed that 900 MHz radiofrequency radiation emitted from mobile phones exhibited an increase oil MDA and TOS levels. Therefore, RF radiation emitted from GSM cellular phone may play a role to induce oxidative damage by; increasing lipid peroxidation and oxidative stress.Öğe Effect of mobile phone exposure on nitric oxide production(Lippincott Williams & Wilkins, 2006) Dasdag, S.; Bilgin, H. M.; Akdag, M. Z.[Abstract Not Available]Öğe EFFECT OF MOBILE PHONES ON TRACE ELEMENTS CONTENT IN RAT TEETH(Taylor & Francis Ltd, 2008) Adiguzel, O.; Dasdag, S.; Akdag, M. Z.; Erdogan, S.; Kaya, S.; Yavuz, I.; Kaya, F. A.Widespread use of wireless communication made it necessary to investigate the long term effect of mobile phone, which is the most popular technological equipment in the earth. One of the important parts of body that absorbs, radiation emitted from mobile phones is oral tissue. However mobile phone users and also scientists usually do not pay attention on effect of mobile phone e exposure on oral tissue. Therefore, there is no epidemiological and experimental studies focused on this part of body. The aim of this study was to investigate the of GSM (Global System for Mobile Communication) -Modulated 900 MHz radiofrequency radiation 017 trace element content of rat teeth. Thirty one Wistar Albino adult male rats were divided into three groups: experimental group (each, n=14), shame group (n=7), and cage control group (n=10). Head of the rats in the experimental group were & exposed to GSH-Modulated 900 MHz radiofrequency radiation for 2 hours per day during ten months. At the end of the exposure period, the contents of some trace elements as Ca, Mg, Zn, and P were measured in the oral tissue. The measurements were performed by Atomic Absorption Spectrophotometry (AAS). However phosphorus content of teeth was measured h.); ultraviolet spectrophotometer (UVS). Changes of Mg, and Zn contents in the experimental group were found to be statistically significant according to the sham and cage control groups. Ca and P contents in the (experimental group were higher than the sham and cage control groups. Difference between the groups was not statistically significant (p>0.05). The results of the study showed that GSM-Modulated 900 MHz radiofrequency radiation can be a factor to alter the teeth trace elements' densities. However further studies are necessary to know whether GSM-Modulated 900 MHz radiofrequency, radiations affects the oral tissues such as the teeth.Öğe The effects of extremly low frequency magnetic field and mangan to the oral tissues(Diagnosis Press Ltd, 2008) Kaya, S.; Celik, M. S.; Akdag, M. Z.; Adiguzel, O.; Yavuz, I.; Turnen, E. C.; Ulku, S. Z.Exposure to extremely low frequency magnetic field (ELFMF) originating from daily electrical-electronic appliances and electric lines, is a common thing. Recently, the discussions focused on the topic whether ELFMF had any harmful effects over health or not. Several previous studies displayed that ELFMF significantly increased bone mineral density. The aim of the present study was to investigate the influence of ELFMF and manganese over mineral accumulation in head and jaw bones of rats. Previous studies showed that manganese plays a significant role over normal development of enamel and dentin alongside contributing to the calcium and phosphorous association. In the present study, the effects of exposure to ELFMF and manganese on mineral density and histology of teeth, were investigated. In the present study, 64 male Wistar albino rats were divided into 8 groups. Amount of mineral elevations were determined in head and jaw bones of the first 6 groups (p <.05) and histologic alterations were found in teeth of rats. The obtained results indicated that ELFMF plays an important role over mineral density and histologic structure of cranial and jaw bones in rats. In conclusion, further epidemiological and experimental laboratory studies are required for more detailed evaluation of the effects of ELFMF on cranial and jaw bones of rats.Öğe Effects of ganoderma lucidum and melatonin on sperm in rats exposed to electromagnetic field(Ijrr-Iranian Journal Radiation Res, 2021) Ozmen, M. F.; Seker, U.; Yavas, M. C.; Cirit, U.; Akdag, M. Z.Background: The aim of this study was to investigate the effect of the electromagnetic field (EMF) generated by 10 kV (50 Hz) high voltage line on the epididymal sperm characteristics and the protective effects of ganoderma lucidum (GL) and melatonin (M) in EMF exposed male rats. Materials and Methods: In this study, 64 Wistar rats were divided into 8 groups (n= 8). Rats in 26-day and 52-day experiment groups were exposed to EMF for 8 hours daily during 26 and 52 days respectively. Rats in EMF+GL-26 and EMF+GL-52 groups were treated with GL by oral gavage 20 mg/kg daily and rats in EMF+M-26 and EMF+M-52 groups received M 10 mg/kg daily during experiments. At the end of experiments, all rats were sacrificed and epididymal sperm concentration, motility and morphology were evaluated. Results: In the 26-day experiment, sperm motility of the control group were significantly lower than all groups (P<0.05). In the 52-day experiment, the EMF+GL52 group had the lowest tail and total morphologic defect rates and the differences between this group and EMF52 and EMF+M52 groups were significant. Conclusion: Our data demonstrated that; (1) EMF exposure can have different effects on sperm quality according to duration of exposure, (2) treatment of GL in rats exposed to EMF for 26 or 52 days increased sperm concentration and reversed negative effect of EMF on sperm morphology, respectively and (3) treatment of M in rats exposed to EMF for 26 or 52 days had negative effects on sperm concentration and sperm morphology, respectively.Öğe EXAMINATION OF LONG TERM MAGNETIC FIELDS ON RAT CALVARIAL AND MANDIBULAR BONE MASS(Diagnosis Press Ltd, 2010) Akpolat, V.; Celik, M. S.; Celik, M. Y.; Ozerdem, M. S.; Akdag, M. Z.; Dasdag, S.; Yavas, M. C.By means of long term extremely low frequency magnetic field (ELF), this study examined the effect of long term magnethic field on rat calvarian and mandibular bone mass. Fourty five female Spraque-Dawley rats were selected for the study. The rats were divided into 3 groups (n=15); ELF MF with 50Hz, 1.5mT was applied for 6 months, 4 hours/day. Total cranial and mandibular bone mineral density (BMD) and bone mineral content (BMC) of rats were determined by dual-energy X-ray absorptiometry (DXA; Discovery QDR series, Discovery A, Hologic, Inc.). Measurements were recorded for all groups before and after the applications, all data were collected and analyzed statistically. The variations in Group 1, before and after the ELF MF applications with respect to BMC and BMD were considered significant (p<.01, p<.001). The variations in Group 2, that has bone loss with respect to BMC and BMD were considered not significant (p>0.05). The variations in control group, Group 3, with respect to BMC and BMD were considered significant (p<0.05).Öğe Radiofrequency Radiation Emitted from Cell Phone induces DNA Damage and Oxidative Stress in Rat Brain Tissue(Wiley, 2017) Alkis, M. E.; Akdag, M. Z.; Bilgin, H. M.; Akpolat, V.; Dasdag, S.[Abstract Not Available]
