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Lychee Pulp-Derived Dietary Fiber-Bound Phenolic Complex Upregulates the SCFAs-GPRs-ENS Pathway and Aquaporins in Loperamide-Induced Constipated Mice by Reshaping Gut Microbiome

文献类型： 外文期刊

作者： Dong, Lihong 1 ; Xu, Zhuohui 2 ; Huang, Guitao 1 ; Zhang, Ruifen 1 ; Deng, Mei 1 ; Huang, Fei 1 ; Su, Dongxiao 2 ;

作者机构： 1.Guangdong Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Funct Foods, Sericultural & Agrifood Res Inst,Guangdong Key Lab, Guangzhou 510610, Peoples R China

2.Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Peoples R China

关键词： lychee; constipation; gut microbiota; dietary fiber; bound phenolics

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 71 卷 41 期

页码：

收录情况： SCI

摘要： This study aimed to investigate the effects of the lychee pulp-derived dietary fiber-bound phenolic complex (DF-BPC) on a murine model of loperamide-induced constipation and its molecular mechanism associated with gut microbiota modification. DF-BPC supplementation mitigated loperamide-induced dyschezia, intestinal hypomotility, and colonic impairment, as evidenced by the increased gastro-intestinal transit rate and mucus cell counts. By comparison, short-chain fatty acids (SCFAs) contents and relative abundances of associated genera (Butyricimonas, Clostridium, and Lactobacillus) were effectively upregulated following DF-BPC supplementation. Notably, DF-BPC significantly enhanced expressions of G protein-coupled receptor (GPR) 41 and 43, reaching 1.43- and 1.62-fold increase, respectively. Neurotransmitter secretions were simultaneously altered in DF-BPC-treated mice, suggesting upregulation of the SCFAs-GPRs-enteric nervous system pathway. The overexpression of aquaporins (AQP3, 8, and 9) was stimulated partly through GPRs activation. Mild inflammation associated with constipation was inhibited by suppressing LBP-TLR4-NF-kappa B signaling translocation. These findings suggest that DF-BPC from lychee pulp has the potential to alleviate constipation in mice through modifying the gut microbiome.

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