title: Violet laser acupuncture--part 2: Effects on peripheral microcirculation.
abstract: Laser Doppler flowmetry for microcirculation monitoring was performed in 10 healthy volunteers (mean age ± SD: 24.9 ± 3.3 years; 5 females, 5 males) prior to, during, and after stimulation using a noninvasive violet (405 nm) laser needle at the Dazhui (GV14) acupoint. The results of this controlled study (control point at the shoulder) showed significant (p < 0.05) increases in Flux (product of concentration and velocity of erythrocytes) at a distance of 3 cm from the acupoint. At the same time, no changes were found at the control point. Furthermore, 5 minutes after stimulation the microcirculation still flowed at a higher level than baseline values at the beginning of the investigation. In a single individual it was demonstrated that needle acupuncture enhanced this effect and placebo (deactivated laser) did not have a significant effect. The results suggest that violet laser acupuncture at the acupoint Dazhui can increase vascular effects on microcirculation.
authors: Research Unit of Biomedical Engineering in Anesthesia and Intensive Care Medicine and TCM Research Center Graz, Medical University of Graz, Graz, Austria.
authors: Lu
authors: L
authors: Wang
authors: Tao
authors: T
authors: Huang
authors: Weibo
authors: W
authors: Zhang
authors: Gerhard
authors: G
authors: Litscher
mesh_terms: D015669:Acupuncture Points; D015670:Acupuncture Therapy / Q000379:methods*; D000328:Adult; D001783:Blood Flow Velocity; D003116:Color; D004912:Erythrocytes / Q000502:physiology; D005260:Female; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000379:methods; D007834:Lasers; D008297:Male; D008833:Microcirculation; D008991:Monitoring, Physiologic / Q000379:methods; D009339:Needles; D012039:Regional Blood Flow; D012867:Skin / Q000098:blood supply*; D055815:Young Adult