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- W4292707169 abstract "Non-typhoidal Salmonella serotypes are well adapted to utilize the inflammation for colonization in the mammalian gut mucosa and cause loss of the integrity of the epithelial barrier in the mammalian intestine. The present study assessed the protective efficacy of fish oil-in-water nanoemulsion, compared to the conventional emulsion, towards the intestinal epithelial barrier against invasive infection of Salmonella enterica serovar Typhimurium strain SL1344 in an in vivo streptomycin-treated mouse model. Non-typhoidal Salmonella enterica serovar Typhimurium strain SL1344 expresses its invasiveness by creating extreme inflammatory assault in the mammalian host lumen via its repertoire of secretory or membrane-bound proteins. Prophylactic treatment of ω-3 polyunsaturated fatty acid-rich fish oil nanoemulsion not only reduced the inflammatory markers by 4-5 fold against the established infection but also retained the gut barrier efficiency as shown by FITC-dextran permeability assay. Though the conventional emulsion also showed similar trends, the efficacy was significantly better with nanoemulsion treatment but neither the nanoemulsion nor conventional emulsion caused any significant change in the microbial colonization of the murine gut mucosa. Mechanistic assessment of the nanoemulsion against inflammation and invasion across the Caco-2 cell monolayer revealed that nanoemulsion treatment protected the expression of Zona occludens-1 along the tight junction, almost by 3-fold as compared to the infected cell monolayer. Such protection was evinced by the trans-epithelial electrical resistance value and the FITC-dextran permeability analysis as well. Fish oil nanoemulsion treatment has also shown significant reduction in pro-inflammatory cytokine expression by the Salmonella strain SL1344 infected Caco-2 cell monolayer. Conventional emulsion also showed distinct protection, but the nanoemulsion offered better protection at the same dosage of fish oil, probably due to its better bioavailability. The results proved that fish oil-loaded nanoemulsion can be efficacious towards maintaining the barrier function and protecting against systemic bacteremia during invasive intestinal infection." @default.
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- W4292707169 date "2022-01-01" @default.
- W4292707169 modified "2023-09-26" @default.
- W4292707169 title "Protective efficacy of fish oil nanoemulsion against non-typhoidal <i>Salmonella</i> mediated mucosal inflammation and loss of barrier function" @default.
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- W4292707169 doi "https://doi.org/10.1039/d1fo04419b" @default.
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