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Author  |
Beneduci, A. |
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Title |
Evaluation of the potential in vitro antiproliferative effects of millimeter waves at some therapeutic frequencies on RPMI 7932 human skin malignant melanoma cells |
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Journal Article |
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Year |
2009 |
Publication |
Cell Biochemistry and Biophysics |
Abbreviated Journal |
Cell Biochem Biophys |
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Volume |
55 |
Issue |
1 |
Pages |
25-32 |
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Keywords |
Cell Cycle/radiation effects; Cell Line, Tumor; Cell Proliferation/radiation effects; *Electromagnetic Fields; Humans; Melanoma/*radiotherapy; Microwaves; Skin Neoplasms/*radiotherapy |
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Abstract |
The potential antiproliferative effects of low power millimeter waves (MMWs) at 42.20 and 53.57 GHz on RPMI 7932 human skin melanoma cells were evaluated in vitro in order to ascertain if these two frequencies, comprised in the range of frequency used in millimeter wave therapy, would have a similar effect when applied in vivo to malignant melanoma tumours. Cells were exposed for 1 h exposure/day and to repeated exposure up to a total of four treatments. Plane wave incident power densities <1 mW/cm(2) were used in the MMWs-exposure experiments so that the radiations did not cause significant thermal effects. Numerical simulations of Petri dish reflectivity were made using the equations for the reflection coefficient of a multilayered system. Such analysis showed that the power densities transmitted into the aqueous samples were < or = 0.3 mW/cm(2). Two very important and general biological endpoints were evaluated in order to study the response of melanoma cells to these radiations, i.e. cell proliferation and cell cycle. Herein, we show that neither cell doubling time nor the cell cycle of RPMI 7932 cells was affected by the frequency of the GHz radiation and duration of the exposure, in the conditions above reported. |
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Address |
Department of Chemistry, University of Calabria, Via P. Bucci, Cubo 17/D, Arcavacata di Rende (CS), Italy. beneduci@unical.it |
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Language |
English |
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Original Title |
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Edition |
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ISSN |
1085-9195 |
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Notes |
PMID:19536459 |
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no |
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Call Number |
IT'IS @ evaj @ |
Serial |
286 |
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