Article

A comparative study of the effects of laser and light-emitting diode radiation on superoxide dismutase activity and nitric oxide production in rat wound fluid

Biophysics 12/2005; 51(1):94-98. DOI:10.1134/S0006350906010143 pp.94-98

ABSTRACT The effect of laser and light-emitting diode radiation in the visible region of the spectrum on the content of reactive nitrogen
species and superoxide dismutase activity in rat wound fluid was studied. The efficiency of action of coherent laser radiation
and incoherent light-emitting diode radiation in the red region of the spectrum on the parameters analyzed was compared. The
study was performed using the model of cut aseptic wounds proposed by L.I. Slutskii. A He-Ne laser (632 nm) or an U-332B light-emitting
diode (630 nm) was used as the source of radiation. It was shown that (1) exposure of wounds to visible light of both laser
and light-emitting diode causes dose-dependent changes in superoxide dismutase activity and nitrite production and that (2)
radiation coherence does not play a significant role in the changes in superoxide dismutase activity or nitric oxide production
by wound fluid phagocytes.

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Keywords

aseptic wounds
 
coherent laser radiation
 
incoherent light-emitting diode radiation
 
L.I. Slutskii
 
light-emitting diode causes dose-dependent changes
 
light-emitting diode radiation
 
parameters analyzed
 
radiation coherence
 
rat wound fluid
 
red region
 
superoxide dismutase activity
 
visible light
 
visible region
 
wound fluid phagocytes
 
wounds