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Medical Microbiology and Immunology
Erschienen in: Medical Microbiology and Immunology 6/2019

01.07.2019 | Original Investigation

Role of coaggregation in the pathogenicity and prolonged colonisation of Vibrio cholerae

verfasst von: Yien Shin Toh, Soo Ling Yeoh, Ivan Kok Seng Yap, Cindy Shuan Ju Teh, Thin Thin Win, Kwai Lin Thong, Chun Wie Chong

Erschienen in: Medical Microbiology and Immunology | Ausgabe 6/2019

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Abstract

Cholera is an acute diarrheal illness caused by the Gram-negative bacterium Vibrio cholerae. The pathogen is known for its ability to form biofilm that confers protection against harsh environmental condition and as part of the colonisation process during infection. Coaggregation is a process that facilitates the formation of biofilm. In a preliminary in vitro study, high coaggregation index and biofilm production were found between V. cholerae with human commensals namely Escherichia coli and Enterobacter cloacae. Building upon these results, the effects of coaggregation were further evaluated using adult BALB/c mouse model. The animal study showed no significant differences in mortality and fluid accumulation ratio between treatment groups infected with V. cholerae alone and those infected with coaggregation partnership (V. cholerae with E. coli or V. cholerae with E. cloacae). However, mild inflammation was detected in both partnering pairs. Higher density of V. cholerae was recovered from faecal samples of mice co-infected with E. coli and V. cholerae in comparison with other groups at 24 h post-infection. This partnership also elicited slightly higher levels of interleukin-5 (IL-5) and interleukin-10 (IL-10). Nonetheless, the involvement of autoinducer-2 (AI-2) as the signalling molecules in quorum sensing system is not evident in this study. Since E. coli is one of the common commensals, our result may suggest the involvement of commensals in cholera development.
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Metadaten
Titel
Role of coaggregation in the pathogenicity and prolonged colonisation of Vibrio cholerae
verfasst von
Yien Shin Toh
Soo Ling Yeoh
Ivan Kok Seng Yap
Cindy Shuan Ju Teh
Thin Thin Win
Kwai Lin Thong
Chun Wie Chong
Publikationsdatum
01.07.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Medical Microbiology and Immunology / Ausgabe 6/2019
Print ISSN: 0300-8584
Elektronische ISSN: 1432-1831
DOI
https://doi.org/10.1007/s00430-019-00628-3

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