Effects of Hegu (LI 4) and Taichong (LR 3) on Vascular Dilation and Constriction in Migraine Patients

Hegu （LI 4） and Taichong （LR 3） are the Yuan- Primary acupoints of the Large Intestine and Liver Meridian, and are collectively named as Si Guan （four gates） point. Combined use of these two acupoints can harmonize yin and yang, regulate qi and blood, and balance ascending or descending. This paper attempts to study the effects of Si Guan point on the vascular dilation and constriction in migraine patients from the perspective of its feature.

Study on the acupoints belonging to the three yin meridians of foot reflecting the variation pattern of uterine qi and blood in women with moderate constitution

Objective:To observe the blood perfusion volume variation pattern in the body surface microcirculation at the Yuan-Primary and the Xi-Cleft points during the menstrual cycle in female college students with moderate constitution under normal physiological state of the uterus;to explore the specific laws of the body surface microcirculation at the Yuan-Primary and Xi-Cleft points in response to the uterine qi and blood changes under normal physiological conditions,and to provide the experimental basis for the specificity of acupoints reflecting the uterine function.Methods:Forty-three healthy and moderate constitution female college students with regular menstrual cycles,without dysmenorrhea and not yet giving birth were recruited.Bilateral Yuan-Primary points[Taichong(LR 3),Taibai(SP 3)and Taixi(KI 3)]and Xi-Cleft points[Zhongdu(LR 6),Diji(SP 8)and Shuiquan(KI 5)],belonging to the three yin meridians of foot and adjacent to the spinal cord segment of the uterus,were selected as the detection acupoints;the crossing point of the three yin meridians of foot[Sanyinjiao(SP 6)],the uterus-related meridian acupoint[Xuehai(SP 10)],the uterus-non-related meridian acupoint[Xuanzhong(GB 39)],and the non-meridian non-acupoint point were selected as the control points.The laser speckle blood flow imaging technique was used to monitor the blood perfusion volume in skin microcirculation at the above points at the menstrual,follicular,ovulatory,and luteal phases of the subjects.Results:The blood perfusion volume in the body surface microcirculation at the right Zhongdu(LR 6)at the ovulatory phase was higher than that at the menstrual,follicular and luteal phases(all P<0.05);there was no significant difference in the microcirculation blood perfusion volume at the other points among different phases(all P>0.05).Conclusion:The blood perfusion volume in the body surface microcirculation at Zhongdu(LR 6),the Xi-Cleft point of the Liver Meridian,shows a specific response to qi and blood changes in the uterus of women with moderate constitution.