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Influence of extremely low frequency electromagnetic fields on the swimming behavior of ciliates

✍ Scribed by Ruth Hemmersbach; Esther Becker; Wilhelm Stockem

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
238 KB
Volume
18
Category
Article
ISSN
0197-8462

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✦ Synopsis

Different species of ciliates (Paramecium biaurelia, Loxodes striatus, Tetrahymena thermophila) have been taken as model systems to study the effects of extremely low-frequency electromagnetic fields (50 Hz, 0.5-2.0 mT) on the cellular level. A dose-dependent increase in the mean swimming velocity and a decrease in the linearity of cell tracks were observed in all wild-type cells. In contrast, field-exposure did not increase the number of directional turns of the Paramecium tetraurelia pawn mutant (d4-500r), which is characterized by defective Ca2+-channels. The described changes indicate a direct effect of low frequency electromagnetic fields on the transport mechanisms of the cell membrane for ions controlling the motile activity of cilia.

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