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Investigation on the colonisation of Campylobacter strains in the pig intestine depending on available metabolites

A. Rath, S. Rautenschlein, J. Rzeznitzeck, M. Lalk, K. Methling, I. Rychlik, E. Peh, S. Kittler, KH. Waldmann, A. von Altrock

. 2022 ; 88 (-) : 101865. [pub] 20220727

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc22024537

Campylobacter (C.) spp. represent one of the most important causes for food-borne bacterial pathogen in humans worldwide. The aim of this study was to investigate metabolic requirements of two Campylobacter strains of different species based on substrate utilisation (in vitro). Based on these results, a correlation between the colonisation and the available substrates in different intestinal sections was recorded using an animal model. Campylobacter coli (ST-5777) and C. jejuni (ST-122) were used to inoculate 16 pigs, respectively, and one group of 16 pigs was used as control. The strains differed significantly in substrate utilisation - C. coli was able to metabolise various substrates (acetate, asparagine, serine, fucose, and propionate), while C. jejuni only utilised serine. Metabolomic analysis of intestinal content from different gut sections showed the presence of all previously tested metabolites, except for fucose. A significantly larger amount of glucose was found in the jejunum of those pigs infected with C. coli, while neither strain utilised it in vitro. The analysis of the intestinal contents revealed a very low proportion of Campylobacterales in the total microbiome, suggesting that the small percentage of the inoculated Campylobacter strains in the gut microflora of the animals is too low to cause differences between the control and infected groups in the composition of the metabolome. Nevertheless, knowledge of specific nutritional requirements of the pathogens combined with proof of different metabolites in the intestinal segments may provide clues about the site of colonisation in the host and improve our understanding of this zoonotic germ.

Citace poskytuje Crossref.org

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