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Proceedings Paper

Low-energy laser irradiation: a possible neuroprotective modality
Author(s): Michal Schwartz; E. Yoles; Arieh S. Solomon M.D.; C. Katz; I. Hai; Michael Belkin M.D.
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Paper Abstract

We have tested the effects of early posttraumatic low-energy laser irradiation on injured neural tissues. Rat optic nerves were crushed by a calibrated forceps and the ensuing degenerative processes were followed up electrophysiologically and by on-line metabolism measurements, using nicotinamide adenine dinucleotide autofluorescence in response to anoxia. The irradiation not only decelerate the posttraumatic degenerative processes but also increased axonal survival as shown by visual evoked potential response recording. The irradiation also reduced significantly the very early posttraumatic reduction in the metabolic activity of the optic nerve. It seems that the low-energy irradiation, possibly by a photochemical mechanism and by modifying he cellular metabolism, prevents the spread of the injury effects from the injury site and along the axons. This action of low-energy laser irradiation is akin to the neuroprotective effects ascribed to various drugs, such as corticosteroids.

Paper Details

Date Published: 22 May 1995
PDF: 7 pages
Proc. SPIE 2391, Laser-Tissue Interaction VI, (22 May 1995); doi: 10.1117/12.209932
Show Author Affiliations
Michal Schwartz, Weizmann Institute of Science (Israel)
E. Yoles, Weizmann Institute of Science (Israel)
Arieh S. Solomon M.D., Goldschleger Eye Research Institute, Tel Aviv Univ. (Israel)
C. Katz, Goldschleger Eye Research Institute, Tel Aviv Univ. (Israel)
I. Hai, Weizmann Institute of Science (Israel)
Michael Belkin M.D., Goldschleger Eye Research Institute, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 2391:
Laser-Tissue Interaction VI
Steven L. Jacques, Editor(s)

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