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Mechanisms of Baicalin Alleviates Intestinal Inflammation: Role of M1 Macrophage Polarization and Lactobacillus amylovorus

文献类型： 外文期刊

作者： Zhang, Shunfen;Zhong, Ruqing;Zhou, Miao;Li, Kai;Lv, Huiyuan;Wang, Huixin;Xu, Ye;Liu, Dadan;Ma, Qiugang;Chen, Liang;Zhang, Hongfu

作者机构：

关键词： baicalin;E. coli;intestinal inflammation;Lactobacillus amylovorus;macrophages polarization;TLR4

期刊名称： ADVANCED SCIENCE

ISSN：

年卷期： 2025 年

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收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Baicalin has been widely used for its anti-inflammatory pharmacological properties, yet its effects on bacterial intestinal inflammation and the mechanisms remain unclear. This study revealed that baicalin alleviates bacterial intestinal inflammation through regulating macrophage polarization and increasing Lactobacillus amylovorus abundance in colon. Specifically, transcriptomic analysis showed that baicalin restored Escherichia coli-induced genes expression changes including T helper cell 17 differentiation-related genes, macrophage polarization related genes, and TLR/IRF/STAT signaling pathway. Subsequent microbial and non-targeted metabolomic analysis revealed that these changes may be related to the enhancement of Lactobacillus amylovorus and the upregulation of its metabolites including chrysin, lactic acid, and indoles. Furthermore, whole-genome sequencing of Lactobacillus amylovorus provided insights into its functional potential and metabolic annotations. Lactobacillus amylovorus supplementation alleviates Escherichia coli-induced intestinal inflammation in mice and similarly inhibited M1 macrophage polarization through TLR4/IRF/STAT pathway. Additionally, baicalin, Lactobacillus amylovorus, or chrysin alone could regulate macrophage polarization, highlighting their independent anti-inflammatory potential. Notably, this study revealed that baicalin alleviates intestinal inflammation through TLR4/IRF/STAT pathway and increasing Lactobacillus amylovorus abundance and the synthesis of chrysin. These findings provide new insights into the therapeutic potential of baicalin and Lactobacillus amylovorus in preventing and treating intestinal inflammation, offering key targets for future interventions.

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