Abstract
Culture filtrates of 19 of 21 (90%) β-hemolytic isolates ofAeromonas hydrophila caused fluid accumulation in permanently ligated rabbit ileal loops, whereas no fluid was accumulated with filtrates of eight non-β-hemolytic isolates. Antiserum to purified β-hemolysin neutralized the ileal loop activity of culture filtrates from four of four β-hemolytic isolates, and treatment at 56°C for 10 min eliminated the loop activity of six additional isolates. These results support the conclusion that β-hemolysin alone causes significant changes in intestinal permeability and that it is a more common pathogenic mechanism than the heat-stable cytotonic enterotoxin. Electrophoretic and serological assays showed evidence for production of only one species of β-hemolysin byA. hydrophila.
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Stelma, G.N., Johnson, C.H. & Spaulding, P. Evidence for the direct involvement ofβ-hemolysin inAeromonas hydrophila enteropathogenicity. Current Microbiology 14, 71–77 (1986). https://doi.org/10.1007/BF01568406
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DOI: https://doi.org/10.1007/BF01568406