Prebiotic Driven Increases in IL-17A Do Not Prevent Colonization of Chickens.

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ID: 94512
2019
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Abstract
Worldwide is a leading cause of foodborne disease. Contamination of chicken meat with digesta from -positive birds during slaughter and processing is a key route of transmission to humans through the food chain. Colonization of chickens with elicits host innate immune responses that may be modulated by dietary additives to provide a reduction in the number of campylobacters colonizing the gastrointestinal tract and thereby reduce the likelihood of human exposure to an infectious dose. Here we report the effects of prebiotic galacto-oligosaccharide (GOS) on broiler chickens colonized with when challenged at either an early stage in development at 6 days of age or 20 days old when campylobacters are frequently detected in commercial flocks. GOS-fed birds had increased growth performance, but the levels of colonizing the cecal pouches were unchanged irrespective of the age of challenge. Dietary GOS modulated the immune response to by increasing cytokine IL-17A expression at colonization. Correspondingly, reduced diversity of the cecal microbiota was associated with colonization in GOS-fed birds. In birds challenged at 6 days-old the reduction in microbial diversity was accompanied by an increase in the relative abundance of spp. Whilst immuno-modulation of the Th17 pro-inflammatory response did not prevent colonization of the intestinal tract of broiler chickens, the study highlights the potential for combinations of prebiotics, and specific competitors (synbiotics) to engage with the host innate immunity to reduce pathogen burdens.
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flaujac-lafontaine2019prebioticfrontiers Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Flaujac Lafontaine, Geraldine M;Richards, Philip J;Connerton, Phillippa L;O'Kane, Peter M;Ghaffar, Nacheervan M;Cummings, Nicola J;Fish, Neville M;Connerton, Ian F;
Journal Frontiers in microbiology
Year 2019
DOI
10.3389/fmicb.2019.03030
URL
Keywords
prebiotic innate immunity microbiota campylobacter th17 broiler chicken galacto-oligosaccharide pro-inflammatory response

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