RESUMO
OBJECTIVE: To observe the effect of electroacupuncture (EA) stimulation at Zhongwan (CV 12) on the skin microcirculatory blood flow along the Conception Vessel (CV) in yin-deficiency constitution volunteers. METHODS: A total of 16 yin-deficiency constitution volunteers (9 woman and 6 men) from 200 students of Fujian University of Traditional Chinese Medicine finished a body constitution questionnaire and showed a yin-deficiency constitution. Skin microcirculatory blood perfusion units (MBPU) at Danzhong (CV 17), Xiawan (CV 10) , and Qihai (CV 6) of the CV were measured by using a Laser Doppler Flowmetry (Peri Flux 5000) in normal constitution, before and after EA stimulation of Zhongwan (CV 12) for 20 min. RESULTS: Under normal condition, the cutaneous MBPU values were significantly lower in the Qihai (CV 6) than in both Danzhong (CV 17) and Xiawan (CV 10) (P < 0.01). After EA stimulation of CV 12 for 20 min, the MBPU values were significantly decreased in the CV 17 and CV 6 acupoint regions compared with pre-stimulation (P < 0.05). No significant changes of skin MBPU were found in Xiawan (CV 10) after EA stimulation of CV 12 (P > 0.05). CONCLUSION: EA at Zhongwan (CV 12) can reduce the skin MBPU values of CV 6 and CV 17 of the Conception Vessel in yin-deficiency constitution volunteers.
