School of Acupuncture-Moxibustion and Tunia, Beijing University of Chinese Medicine, Beijing, China.
Peking University, Beijing, China.
Neurogastroenterol Motil. 2020 May;32(5):e13808. doi: 10.1111/nmo.13808. Epub 2020 Mar 1.
BACKGROUND: Electroacupuncture (EA) is widely used in various gastrointestinal diseases around the world, including POI. Here, we investigated different therapeutic effects of EA using lower limb and abdomen acupoints. METHODS: Intestinal manipulation was performed in 88 mice, and eight mice underwent a sham operation. Forty mice were randomly divided into model group and four EA groups receiving stimulation at ST36 (2, 10, 30, 100 Hz). The most effective frequency was then used in the following experiments. Forty-eight mice were randomly divided into six groups receiving EA treatment at ST37, ST39, ST25, CV4, CV12, and a non-acupuncture point. Gastrointestinal motility and plasma TNF-α, IL-6 were evaluated in all mice. The local immune response and α-smooth muscle actin (α-SMA) expression were assessed by immunofluorescence, ELISA, and HE staining. RESULTS: ST36 stimulated with 10 or 30 Hz EA significantly increased the gastrointestinal motility and attenuated peripheral inflammation; however, ST36 stimulated with 2 or 100 Hz did not induce any effect. The therapeutic effects on motility and inflammation of 10 Hz EA in the ST36 group were similar in the ST36, ST37, ST39, or CV4 groups, but when applied to ST25, CV12 or non-acupoint had no significant differences. EA at ST36, ST37, ST39, or CV4 significantly inhibited local MPO activity, immune cells infiltration, and increased α-SMA. CONCLUSIONS: EA at lower limb and abdomen acupoints with the same stimulation parameters had different therapeutic effects on postoperative dysmotility and inflammation. Furthermore, EA protected SMC to improve gastrointestinal transit by reducing local inflammation in the intestinal musculature in POI.
背景:电针(EA)在全球范围内广泛应用于各种胃肠道疾病,包括术后肠麻痹(POI)。在这里,我们研究了使用下肢和腹部穴位的不同 EA 治疗效果。
方法:对 88 只小鼠进行肠道操作,8 只进行假手术。40 只小鼠随机分为模型组和 4 个 EA 组,分别接受 ST36(2、10、30、100 Hz)刺激。然后使用最有效的频率进行后续实验。48 只小鼠随机分为 6 组,分别接受 ST37、ST39、ST25、CV4、CV12 和非穴位 EA 治疗。所有小鼠均评估胃肠动力和血浆 TNF-α、IL-6。通过免疫荧光、ELISA 和 HE 染色评估局部免疫反应和α-平滑肌肌动蛋白(α-SMA)表达。
结果:ST36 以 10 或 30 Hz EA 刺激可显著增加胃肠动力并减轻外周炎症;然而,ST36 以 2 或 100 Hz 刺激则没有诱导任何效果。ST36 组 10 Hz EA 对运动和炎症的治疗效果在 ST36、ST37、ST39 或 CV4 组中相似,但应用于 ST25、CV12 或非穴位时则无明显差异。ST36、ST37、ST39 或 CV4 的 EA 可显著抑制局部 MPO 活性、免疫细胞浸润,并增加α-SMA。
结论:采用相同刺激参数的下肢和腹部穴位的 EA 对术后运动障碍和炎症有不同的治疗效果。此外,EA 通过减少 POI 肠道肌层的局部炎症来保护 SMC,从而改善胃肠道转运。
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