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- W2269294692 abstract "The administration of prebiotics as oligosaccharides (OS), by acting on intestinal microbiota, could modulate the immune and inflammatory response and represent a new strategy to improve the outcome of bacterial infection. The aim of this study was to determine whether pectin-derived acidic oligosaccharides (pAOS) could modulate the outcome of pulmonary P. aeruginosa (PA) infection in C57BL/6 mice, which develop a Th1 response to PA lung infection. Mice were randomized for 5 weeks to consume a control or a 5% pAOS diet and chronically infected by PA. Resistance to a second PA infection was also analyzed by reinfecting the surviving mice 2 weeks after the first infection. Compared with control mice, mice fed pAOS had reduced mortality (P<0.05). This improvement correlated with a better control of the inflammatory response with a lower neutrophil count on day 1 (P<0.05), a sustained neutrophil and macrophage recruitment on days 2 and 3 (P<0.01) a greater and sustained IL-10 release in lung (P<0.05) and a reduction of the Th1 response and M1 activation with a lower IFN-γ/IL-4 (P<0.01) and nos2/arg1 (P<0.05) ratios. These results coincided with a modulation of the intestinal microbiota as shown by an increased butyric acid concentration in feces (P<0.05). Moreover, pAOS decreased the bacterial load (P<0.01) in mice reinfected 2 weeks after the first infection, suggesting that pAOS could reduce pulmonary exacerbations. In conclusion, pAOS improved the outcome of PA infection in C57BL/6 mice by modulating the intestinal microbiota and the inflammatory and immune responses." @default.
- W2269294692 created "2016-06-24" @default.
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- W2269294692 date "2015-11-23" @default.
- W2269294692 modified "2023-10-14" @default.
- W2269294692 title "Pectin- Derived Acidic Oligosaccharides Improve the Outcome of Pseudomonas aeruginosa Lung Infection in C57BL/6 Mice" @default.
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- W2269294692 doi "https://doi.org/10.1371/journal.pone.0139686" @default.
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