Possible virulence factors involved in bacteraemia caused by Aeromonas hydrophila

J. Vadivelu, S. D. Puthucheary, M. Phipps, Y. W. Chee

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Abstract

Eighteen strains of Aeromonas hydrophila from patients with bacteraemia were investigated for possible virulence factors. Cytotoxin and haemolysin were produced by all strains, whereas cholera toxin-like factor was produced by 33% of strains only. Enterotoxin production was not detected. Haemagglutination of guinea-pig, fowl and rabbit erythrocytes was demonstrated by 83%, 67% and 61% of strains, respectively. Fucose- and mannose-sensitive haemagglutinins were predominant. None of the strains agglutinated sheep erythrocytes. Extrachromosomal DNA was detected in 17 strains, 16 of which had a plasmid (3.6-5.1 MDa), the majority being between 4.6 and 5.1 MDa.

Original languageEnglish
Pages (from-to)171-174
Number of pages4
JournalJournal of Medical Microbiology
Volume42
Issue number3
DOIs
Publication statusPublished - 1995
Externally publishedYes

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