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- W4381136773 abstract "Limosilactobacillus johnsoni (L. j) and Limosilactobacillus mucosae (L. m) can alleviate the inflammatory response. This study aimed to elucidate the underlying mechanisms by which L. j- and L. m-derived extracellular vesicles (EVs) mitigate lipopolysaccharide (LPS)-induced intestinal injury. Piglets were assigned to 4 groups: oral phosphate-buffered saline inoculation for 2 wk prior to intraperitoneal injection of physiological saline or LPS, and oral L. j/L. m inoculation for 2 wk prior to intraperitoneal injection of LPS. The intestinal integrity, macrophage markers, cytokine levels, and microbiota were determined. The cytokine levels and macrophage phenotype were detected after L. j/L. m and their EVs were coincubated with macrophages. The levels of cytokines, tight junction proteins, and apoptosis were measured after intestinal epithelial cells were cocultured with macrophages. LPS challenge decreased jejunal villus length; expression levels of zonula occludens-1 (ZO-1), occludin, arginase-1 (Arg1), and interleukin (IL)-10; and number of CD163+ cells and increased the expression levels of inducible nitric oxide synthase (iNOS), IL-1β, IL-6, and tumor necrosis factor (TNF)-α compared with that in the control. L. j and L. m pretreatment rescued the aforementioned indicators compared with LPS challenge. Pretreatment of L. j and L. m and their EVs reversed the levels of IL-1β, IL-6, TNF-α, and IL-10 and the gene expression of iNOS and Arg1 in the LPS group in macrophages. Pretreatment with L. j and L. m-derived EVs increased ZO-1 and occludin mRNA expression and reduced IL-1β, caspase-3, and bax gene expression in intestinal epithelial cells of the coculture system. Enzyme-treated EVs were less effective than native EVs. This study suggests that EVs secreted by L. j and L. m control inflammation by modulating macrophage polarization, thereby improving intestinal barrier function." @default.
- W4381136773 created "2023-06-19" @default.
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- W4381136773 date "2023-08-01" @default.
- W4381136773 modified "2023-10-15" @default.
- W4381136773 title "Limosilactobacillus johnsoni and Limosilactobacillus mucosae and Their Extracellular Vesicles Alleviate Gut Inflammatory Injury by Mediating Macrophage Polarization in a Lipopolysaccharide-Challenged Piglet Model" @default.
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- W4381136773 doi "https://doi.org/10.1016/j.tjnut.2023.06.009" @default.
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