Effect of low-energy lasers on the peripheral nervous system and an attempt to explain this phenomenon

Rachel Lubart; S. Rochkind; Zvi Malik; Moshe Nissan

doi:10.1117/12.17473

1 June 1990 Effect of low-energy lasers on the peripheral nervous system and an attempt to explain this phenomenon

Rachel Lubart, S. Rochkind, Zvi Malik, Moshe Nissan

Proceedings Volume 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II; (1990) https://doi.org/10.1117/12.17473
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The effect of Low Energy Lasers Irradiation (LELI) from green (570nm) cw HeNe laser, red (632nm) cw HeNe laser and pulsed I.R. lasers (904nm) at 950Hz and 4500Hz, on the peripheral nervous system, was examined. The sciatic nerve in rats was surgically exposed, crushed and then subjected to direct irradiation of each laser. It was found that both HeNe lasers significantly boot the electrical activity of the injured nerve, the green (570nm) HeNe laser being more effective. On the other hand, no effect on the electrical activity of the nerve was found with the I.R. lasers. In the second part of this work we made an attempt to explain the phenomenon of low-laser tissue interaction. We found, by an E.P.R. (Electron Paramagnetic Resonance) technique, that singlet oxygen is produced during the irradiation. Singlet oxygen in small amounts is very significant in biochemical processes and hence can be important in biostimulation. It is proposed that singlet oxygen is photoproduced by the natural porphyrins existing in every cell.

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Rachel Lubart, S. Rochkind, Zvi Malik, and Moshe Nissan "Effect of low-energy lasers on the peripheral nervous system and an attempt to explain this phenomenon", Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990); https://doi.org/10.1117/12.17473

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