Chen Ming, Hu Xiang-long, Wu Zu-xing
Key Lab of Meridian Research of Fujian Province, Fujian Academy of Chinese Medicine, Fuzhou 350003, China.
Zhen Ci Yan Jiu. 2010 Jun;35(3):213-6.
To observe changes of the partial oxygen pressure in the deep tissues along the Large Intestine Meridian (LIM) during acupuncture stimulation, so as to reveal the characteristics of energy metabolism in the tissues along the LIM.
Thirty-one healthy volunteer subjects were enlisted in the present study. Partial oxygen pressure (POP) in the tissues (at a depth of about 1.5 cm) of acupoints Binao (LI 14), Shouwuli (LI 13), Shousanli (LI 10), 2 non-acupoints [the midpoints between Quchi (LI 11) and LI 14, and between Yangxi (LI 5) and LI 11) of the LIM, and 10 non-meridian points, 1.5-2.0 cm lateral and medial to each of the tested points of the LIM was detected before, during and after electroacupuncture (EA) stimulation of Hegu (LI 4) by using a tissue oxygen tension needle-like sensor.
In normal condition, the POP values in the deep tissues along the LIM were significantly higher than those of the non-meridian control points on its bilateral sides. During and after EA of Hegu (LI 4), the POP levels decreased significantly in the deep tissues along the LIM in comparison with pre-EA (P < 0.01), and had no apparent changes in the non-meridian control points (P > 0.05).
POP is significantly higher in the deep tissues along the LIM of healthy subjects under normal conditions, which can be downregulated by EA of Hegu (LI 4), suggesting an increase of both the utilization rate of oxygen and energy metabolism after EA.
观察针刺刺激过程中大肠经深层组织局部氧分压的变化，以揭示大肠经沿线组织能量代谢的特征。
本研究招募了31名健康志愿者。使用组织氧张力针状传感器，在电针（EA）刺激合谷（LI 4）之前、期间和之后，检测曲池（LI 11）与LI 14之间、阳溪（LI 5）与LI 11之间的中点这2个非穴位、大肠经10个非经穴点（大肠经各检测点外侧和内侧1.5 - 2.0 cm处）以及臂臑（LI 14）、手五里（LI 13）、手三里（LI 10）穴位处（深度约1.5 cm）组织中的局部氧分压（POP）。
在正常状态下，大肠经深层组织中的POP值显著高于其双侧的非经对照点。合谷（LI 4）电针期间及之后，大肠经深层组织中的POP水平与电针前相比显著降低（P < 0.01），而非经对照点无明显变化（P > 0.05）。
正常情况下，健康受试者大肠经深层组织中的POP显著较高，合谷（LI 4）电针可使其下调，提示电针后氧利用率和能量代谢均增加。
