Browsing by Author "Delibas, Namik"
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- ItemBiological and morphological effects on the reproductive organ of rats after exposure to electromagnetic field.(2005-04-04) Ozguner, Meltem; Koyu, Ahmet; Cesur, Gokhan; Ural, Mehmet; Ozguner, Fehmi; Gokcimen, Alpaslan; Delibas, NamikThe biological effect of electromagnetic field EMF emitted from mobile phones is a current debate and still a controversial issue Therefore little is known on the possible adverse effects on reproduction as mobile phone bio effects are only a very recent concern The aim of this experimental study was to determine the biological and morphological effects of 900 MHz radiofrequency RF EMF on rat testes
- ItemNitric oxide level in the nasal and sinus mucosa after exposure to electromagnetic field.(2005-05-11) Yariktas, Murat; Doner, Fehmi; Ozguner, Fehmi; Gokalp, Osman; Dogru, Harun; Delibas, NamikOBJECTIVE The purpose of this study was to examine the changes in nitric oxide NO level in the nasal and paranasal sinus mucosa after exposure radiofrequency electromagnetic fields EMF STUDY DESIGN AND SETTING Thirty male Sprague Dawley rats were randomly grouped as follows EMF group group I n 10 EMF group in which melatonin received group II n 10 and the control sham operated group group III n 10 Groups I and II were exposed to a 900 MHz Oral melatonin was given in group II Control rats group III were also placed in the tube as the exposure groups but without exposure to EMF At the end of 2 weeks the rats were sacrificed and the nasal and paranasal sinus mucosa dissected NO was measured in nasal and paranasal mucosa RESULTS The nasal and paranasal sinus mucosa NO levels of group I were significantly higher than those of the control group group III P Under 0 05 However there was no statistically significant difference between group II and the control group group III regarding NO output P 0 05 CONCLUSION Exposure to EMF released by mobile phones 900 MHz increase NO levels in the sinus and nasal mucosa SIGNIFICANCE Increased NO levels may act as a defense mechanism and presumably related to tissue damage In addition melatonin may have beneficial effect to prevent these changes in the mucosa
- ItemNo effects of 900 MHz and 1800 MHz electromagnetic field emitted from cellular phone on nocturnal serum melatonin levels in rats.(2005-06-30) Koyu, Ahmet; Ozguner, Fehmi; Cesur, Gokhan; Gokalp, Osman; Mollaoglu, Hakan; Caliskan, Sadettin; Delibas, NamikIn this study the effects of exposure to a 900 MHz and 1800 MHz electromagnetic field EMF on serum nocturnal melatonin levels of adult male Sprague Dawley rats were studied Thirty rats were used in three independent groups 10 of which were exposed to 900 MHz 10 of which were exposed to 1800 MHz and 10 of which were sham exposed control The exposures were performed 30 min day for five days week for four weeks to 900 MHz or 1800 MHz EMF Control animals were kept under the same environmental conditions as the study groups except with no EMF exposure The concentration of nocturnal melatonin in the rat serum was measured by using a radioimmunoassay method There were no statistically significant differences in serum melatonin concentrations between the 900 MHz EMF group and the sham exposed group P 0 05 The values at 12 00 pm were 39 11 6 5 pg mL in the sham exposed group and 34 97 5 1 pg mL in the 900 MHz EMF exposed group Also there were no statistically significant differences in serum melatonin concentrations between the sham exposed group and the 1800 MHz EMF exposed group P 0 05 The values at 12 00 pm were 39 11 6 5 pg mL in the sham exposed group and 37 96 7 4 pg mL in the exposed group These results indicate that mobile phones emitting 900 and 1800 MHz EMF have no effect on nocturnal serum melatonin levels in rats