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Related Experiment Videos

Violet laser acupuncture--part 2: Effects on peripheral microcirculation.

Lu Wang1, Tao Huang, Weibo Zhang

  • 1Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine and TCM Research Center Graz, Medical University of Graz, Graz, Austria.

Journal of Acupuncture and Meridian Studies
|March 29, 2011
PubMed
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Violet laser acupuncture at the Dazhui (GV14) acupoint significantly increased microcirculation blood flow in healthy volunteers. This vascular effect persisted for at least five minutes post-stimulation.

Area of Science:

  • Integrative Medicine
  • Biomedical Engineering
  • Physiology

Background:

  • Microcirculation plays a vital role in tissue oxygenation and waste removal.
  • Acupuncture is a traditional therapy with potential physiological effects.
  • Noninvasive methods are needed to objectively assess microcirculatory responses to therapies.

Purpose of the Study:

  • To investigate the impact of violet laser acupuncture on microcirculation.
  • To evaluate the vascular effects at the Dazhui (GV14) acupoint.
  • To compare laser acupuncture with a control point and placebo.

Main Methods:

  • Laser Doppler flowmetry was used to monitor microcirculation.
  • 10 healthy volunteers received noninvasive violet laser (405 nm) stimulation.

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  • Stimulation was applied at the Dazhui (GV14) acupoint and a shoulder control point.

    • Main Results:

    • Significant increases in erythrocyte flux were observed 3 cm from the Dazhui acupoint (p < 0.05).
    • No significant changes in flux were detected at the control point.
    • Elevated microcirculation persisted for 5 minutes post-stimulation; needle acupuncture enhanced the effect, while placebo did not.

    Conclusions:

    • Violet laser acupuncture at the Dazhui acupoint demonstrates measurable vascular effects on microcirculation.
    • The observed increase in blood flow suggests a potential therapeutic benefit.
    • Noninvasive laser stimulation offers a quantifiable method to study acupoint-specific physiological responses.