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Author  |
AyÅŸe, I.-G.; Zafer, A.; Sule, O.; IÅŸil, I.-T.; Kalkan, T. |
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Title |
Differentiation of K562 cells under ELF-EMF applied at different time courses |
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Journal Article |
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2010 |
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Electromagnetic biology and medicine |
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29 |
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3 |
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122-130 |
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Cell Differentiation; Cell Differentiation: drug effects; Cell Differentiation: radiation effects; Electromagnetic Fields; Heat-Shock Response; Heat-Shock Response: drug effects; Heat-Shock Response: radiation effects; Humans; K562 Cells; Magnesium; Magnesium: pharmacology; Reactive Oxygen Species; Reactive Oxygen Species: metabolism; Time Factors |
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Abstract |
The time-course of ELF-EMF application to biological systems is thought to be an important parameter determining the physiological outcome. This study investigated the effect of ELF-EMF on the differentiation of K562 cells at different time courses. ELF-EMF (50 Hz, 5 mT, 1 h) was applied at two different time-courses; first at the onset of hemin induction for 1 h, and second, daily 1 h for four days. While single exposure to ELF-EMF resulted in a decrease in differentiation, ELF-EMF applied everyday for 1 h caused an increase in differentiation. The effect of co-stressors, magnesium, and heat-shock was also determined and similar results were obtained. ELF-EMF increased ROS levels in K562 cells not treated with hemin, however did not change ROS levels of hemin treated cells indicating that ROS was not the cause. Overall, these results imply that the time-course of application is an important parameter determining the physiological response of cells to ELF-EMF. |
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WP5 In vitro |
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UNIBAS @ david.schuermann @ |
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568 |
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