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- W2980822417 abstract "The purpose of this study was to investigate the inflammatory response of cornea and conjunctiva to topically applied lipopolysaccharide (LPS) in mice with and without antibiotic (antibiotic cocktail, ABX) induced dysbiosis.Dysbiosis was induced by oral antibiotics for 14 days in a group of conventional female C57BL/6J (B6) mice. 16S rRNA sequencing investigated microbiome composition. Intestinal microbiome differences were assessed using 16S rRNA sequencing of fecal pellet DNA. Blood was collected after euthanasia. CD86 expression in draining nodes was examined by flow cytometry. At day 15, a single dose of LPS or vehicle was topically applied to ABX and naïve mice. Corneal epithelium and conjunctiva were obtained after 4 hours and processed for gene expression analysis. A separate group of germ-free (GF) B6 mice was also topically challenged with LPS.Antibiotic treatment significantly decreased intestinal diversity and increased serum levels of LPS. This was accompanied by a significant increase in CD86+MHC II+CD11c+CD11b+ cells in draining nodes. Compared to vehicle, topically applied LPS increased IL-1β, TNF-α, and CXCL10 mRNA transcripts in cornea and IL-1β, TNF-α, and CXCL10 in the conjunctiva in conventional and antibiotic-treated groups. However, there was higher TNF-α, CXCL10, and IL-12 expression in the cornea of LPS-treated ABX mice compared to LPS-treated mice with intact microbiota. LPS stimulation on GF conjunctiva mirrored the results in ABX mice, although greater IL-12 and IFN-γ expression was observed in GF conjunctiva compared to conventional LPS-treated mice.Acute depletion of commensals through antibiotics or germ-free environment worsens the inflammatory response to LPS." @default.
- W2980822417 created "2019-10-25" @default.
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- W2980822417 date "2019-10-16" @default.
- W2980822417 modified "2023-10-16" @default.
- W2980822417 title "Dysbiosis Modulates Ocular Surface Inflammatory Response to Liposaccharide" @default.
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- W2980822417 doi "https://doi.org/10.1167/iovs.19-27939" @default.
- W2980822417 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6795342" @default.
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- W2980822417 hasPublicationYear "2019" @default.
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