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Proceedings Paper

Effect of low-energy lasers on the peripheral nervous system and an attempt to explain this phenomenon
Author(s): Rachel Lubart; S. Rochkind; Zvi Malik; Moshe Nissan
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Paper 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.

Paper Details

Date Published: 1 June 1990
PDF: 6 pages
Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990); doi: 10.1117/12.17473
Show Author Affiliations
Rachel Lubart, Bar-Ilan Univ. (Israel)
S. Rochkind, Ichilov Hospital (Israel)
Zvi Malik, Bar-Ilan Univ. (Israel)
Moshe Nissan, Technion--Israel Institute of Technology (Israel)


Published in SPIE Proceedings Vol. 1200:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems II
Stephen N. Joffe; Kazuhiko Atsumi, Editor(s)

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