Title: Suppressive influence of periodic and chaotic laser light on cancer cells

Authors: Claudia M. Kacher, Herbert Klima, Karl W. Kratky

Addresses: Atomic Institute, The Austrian Universities, Schüttelstrabe 115, A-1020 Vienna, Austria. ' Atomic Institute, The Austrian Universities, Schüttelstrabe 115, A-1020 Vienna, Austria. ' Research Group 'Physics of Physiological Processes', Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria

Abstract: HeLa-cells have been irradiated with a HeNe-laser of 633 nm in the lag-phase at initial cell densities of 10⁴ cells per ml. It is shown that cancer cells react differently to the 633 nm laser light (100 or 200 J/m²). Energy densities of 100 and 200 J/m² and different kinds of radiation (constant, periodic and pseudo-chaotic radiation) have been applied. The relative cell densities have been measured immediately, 24 and 48 hr after the radiation. We could show that all three kinds of radiation show different effects. Soon after the exposure constant radiation is very effective. Periodic radiation is least effective and pseudo-chaotic radiation is little effective soon after the radiation but gets more effective with time.

Keywords: cancer cells; periodic laser light; chaotic laser light; cell density; suppressive influence; radiation.

DOI: 10.1504/IJMIC.2008.023124

International Journal of Modelling, Identification and Control, 2008 Vol.5 No.3, pp.214 - 220

Published online: 10 Feb 2009 *

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