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Rath A, Rautenschlein S, Rzeznitzeck J, Lalk M, Methling K, Rychlik I, Peh E, Kittler S, Waldmann KH, von Altrock A. Investigation on the colonisation of Campylobacter strains in the pig intestine depending on available metabolites. Comp Immunol Microbiol Infect Dis 2022; 88:101865. [PMID: 35914481 DOI: 10.1016/j.cimid.2022.101865] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 10/16/2022]
Abstract
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.
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Affiliation(s)
- Alexandra Rath
- Clinic for Swine and Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany.
| | - Silke Rautenschlein
- Clinic for Poultry, University of Veterinary Medicine Hannover Foundation, 30559 Hannover, Germany
| | - Janina Rzeznitzeck
- Clinic for Poultry, University of Veterinary Medicine Hannover Foundation, 30559 Hannover, Germany
| | - Michael Lalk
- Institute for Pharmaceutical Biology, University of Greifswald, Greifswald, Germany
| | - Karen Methling
- Institute for Pharmaceutical Biology, University of Greifswald, Greifswald, Germany
| | - Ivan Rychlik
- Veterinary Research Institute, Brno, Czech Republic
| | - Elisa Peh
- Institute for Food Quality and Food Safety, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Sophie Kittler
- Institute for Food Quality and Food Safety, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Karl-Heinz Waldmann
- Clinic for Swine and Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany
| | - Alexandra von Altrock
- Clinic for Swine and Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany
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