Photomedicine and laser surgery
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Photomed Laser Surg · Apr 2005
Analgesic effect of He-Ne (632.8 nm) low-level laser therapy on acute inflammatory pain.
The aim of this study was to evaluate the analgesic effect of the low level laser therapy (LLLT) with a He-Ne laser on acute inflammatory pain, verifying the contribution of the peripheral opioid receptors and the action of LLLT on the hyperalgesia produced by the release of hyperalgesic mediators of inflammation. ⋯ He-Ne LLLT inhibits the sensitization increase of nociceptors on the inflammatory process. The analgesic effect seems to involve hyperalgesic mediators instead of peripheral opioid receptors.