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Abstract Title:

[Mechanisms of electroacupuncture at "Zusanli"(ST36) in delaying colon "inflammation-cancer transformation"].

Abstract Source:

Zhen Ci Yan Jiu. 2022 Oct 25 ;47(10):866-71. PMID: 36301162

Abstract Author(s):

Xiao-Yue Sun, Hong-Ye Wan, Zhi-Yun Zhang, Yang-Shuai Su, Xiao-Ning Zhang, Xiao-Yu Wang, Zheng-Yang Qu, Wei He, Xiang-Hong Jing

Article Affiliation:

Xiao-Yue Sun

Abstract:

OBJECTIVE: To investigate the mechanism of electroacupuncture (EA) "Zusanli" (ST36) in delaying colon "inflammation-cancer transformation" in mice by anti-inflammatory.

METHODS: C57BL/6J mice were randomly divided into normal, model and EA groups, with 12 mice in each group. The mouse model of colorectal cancer (CRC) was established by intrape-ritoneal injection of azomethane (AOM) and feeding dextran sodium sulfate (DSS). At the beginning of the 2cycle, EA was applied to bilateral ST36 for 30 min once every other day for 12 times. The number of colon tumors in each group was observed, and the weight and length of colon were recorded. The contents of interleukin (IL)-1β, IL-6, IL-17A, IL-23, tumor necrosis factor (TNF)-αand CXC chemokine ligand 1 (CXCL1) of serum and colon tissue were detected by MSD multifactorial assay.The apoptosis of local cells in colon tumor was observed by TUNEL staining. Cell proliferation in colon tumor was observed by immunohistochemistry.

RESULTS: Compared with the normal group, the colon length was significantly shortened (<0.05) and the colon mass was significantly increased (<0.001) in the model group, the contents of IL-1β, IL-6, TNF-α, IL-17A and CXCL1 of serum and colon tissue were significantly increased (<0.05,<0.01,<0.001), and the content of IL-23 was increased in colon tissue (<0.05) in the model group. Compared with the model group, the colon mass was decreased (<0.05) and the contents of IL-1β, IL-6, TNF-αand IL-17A in serum were decreased (<0.05), while the contents of IL-17A, CXCL1 and IL-23 in colon tissue were decreased (<0.05) in the EA group, the percentage of local apoptotic cells in the EA group was increased (<0.001), the percentage of PCNA positive cells was decreased (<0.001), the number of tumors and the tumor volume were significantly decreased (<0.01,<0.05). The contents of IL-6, TNF-α, IL-17A and IL-23 in serum of CRC mice were positively correlated with tumor burden (<0.05).The contents of IL-1β, TNF-α, CXCL1 and IL-23 in colon tissue of CRC mice were positively correlated with tumor burden (<0.05).

CONCLUSION: Electroacupuncture at ST36 can inhibit the inflammatory response of AOM/DSS inflammatory associated CRC mice and delay the "inflammation-cancer transformation" of colon.

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