Effects of low-intensity laser irradiation on animal antioxidant system

Olga S. Tziunchik; T. I. Khomich; D. V. Preobrazhensky

doi:10.1117/12.446503

26 October 2001 Effects of low-intensity laser irradiation on animal antioxidant system

Olga S. Tziunchik, T. I. Khomich, D. V. Preobrazhensky

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Proceedings Volume 4433, Laser-Tissue Interactions, Therapeutic Applications, and Photodynamic Therapy; (2001) https://doi.org/10.1117/12.446503
Event: European Conferences on Biomedical Optics, 2001, Munich, Germany

Abstract

The effects of laser irradiation on human and animal organisms have been intensively studied, but the mechanism of this effect is not well understood and discussed on the level of hypothesis. The effect of low-intensity laser irradiation (LILI) depends both on its physical parameters (wavelength, power density, time etc.) and on optical properites of irradiated tissues. The biological response on LILT started from the resonance absorption of irradiation by specific acceptors-enzymes, pigments and other biochemical structures containing in most cases chromophores. At the same time, distribution of absorbed energy between oscillated-excited states of atomic groups of macromolecules with following energy migration takes place too. Such effects induced changes in intensity of lipid peroxidation (LPO) and transitions of cell membrane confirmations with following changes of membrane enzyme activity (adenilate cyclase, ATPase) and ion permeability of membranes [1-3]. The effects of LILT on antioxidant system (AOS) of organism (the main components of this system are reduced glutathione (GSH) and enzymes - superoxiddismutase (SOD), catalase, glutathione-peroxidase (GP) [3]), have been described mainly for helium-neon laser (HNL) and are contradictory. From the other hand the irradiation by HNL induced activation of the AOS components [1 ,4]. It may be due to the activation of oxygen molecules by red light and, thereby, oxidative processes in tissues, or due to the effects on membrane functions, for example, membranes of red blood cells. At the same time, the effect of inhibition by this type of LILT or absence of any effect of LILT on AOS was shown by other researchers [4,5].

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Olga S. Tziunchik, T. I. Khomich, and D. V. Preobrazhensky "Effects of low-intensity laser irradiation on animal antioxidant system", Proc. SPIE 4433, Laser-Tissue Interactions, Therapeutic Applications, and Photodynamic Therapy, (26 October 2001); https://doi.org/10.1117/12.446503

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KEYWORDS

Argon ion lasers

Adaptive optics

Carbon dioxide lasers

Low-intensity laser therapy

Tissues

Laser irradiation

Blood

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