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  • Title: [Comparison of electroacupuncture at lower he-sea points on HMGB 1 and nAchR α7 in rats with acute gastric mucosal lesion].
    Author: Zhang H, Wu J, Qi F, Yin X, Ai K, Yi X, Ling X, Deng S.
    Journal: Zhongguo Zhen Jiu; 2016 Oct 12; 36(10):1071-1076. PubMed ID: 29231528.
    Abstract:
    OBJECTIVE: To observe the influence of electroacupuncture (EA) at lower he-sea points of stomach, large intestine, small intestine and gallbladder on interleukin-1β (IL-1β), high mobility group protein 1 (HMGB 1) and alpha 7 nicotinic acetylcholine receptor (nAchR α7) in rats with acute gastric mucosal lesion (AGML), so as to explore whether there is relative specificity in treating gastric viscera disease by stimulating Zusanli (ST 36). METHODS: Sixty healthy SD rats were randomly assigned into a blank group, a model group, a Zusanli group, a Shangjuxu group, a Xiajuxu group and a Yanglingquan group, ten rats in each one (half male and half female). The WRS method was applied to induce the AGML model except the rats in the blank group. The rats in the blank group were treated with routine diet; the rats in the model group were treated with immobilization at rat platform, 30 min per time; the rats in the Zusanli group, Shangjuxu group, Xiajuxu group and Yanglingquan group were treated with acupuncture and connected with EA device (dilatational wave 10 Hz/50 Hz, positive electrode on the left side and negative electrode on the right side, intensity was appropriate when rat hind leg slightly shook), 30 min per time. The treatment was given once a day. After consecutive 10-day treatment, the gastric tissue was collected and the damage of gastric mucosa was evaluated; ELISA method was applied to measure the content of serum IL-1β and tissue HMGB 1; the Western blot method was applied to measure the expression of nAchR α7 receptor. RESULTS: (1) Compared with the model group, the ulcer index (UI) of gastric mucosa, serum IL-1β and tissue HMGB 1 were lower, and the expression of nAchR α7 was increased in the remaining groups (P<0.05, P<0.01). (2) Compared with the Zusanli group, the UI of gastric tissue, serum IL-1β and tissue HMGB 1 were higher in the Shangjuxu group, Xiajuxu group and Yanglingquan group (P<0.05, P<0.01), and the expression of nAchRα7 was reduced in the Yanglingquan group (P<0.01). CONCLUSIONS: (1) EA at digestive system-related lower he-sea points, through IL-1β, HMGB 1 and nAchR α7, could regulate immune response, lighten inflammatory reaction and reduce mucosal injury, which could realize the intervention effect on AGML rats. (2) From the comparison, it is concluded the intervention effect of Zusanli group is superior to the other groups, partly indicating the relative specificity between Zusanli and stomach.
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