Toxic and Enzymatic Activities of Vibrio Vulnificus Biotype 2 with Respect to Host Specificity

Overview

Journal Appl Environ Microbiol

Specialties Environmental Health
Microbiology

Date 1996 Jul 1

PMID 8779570

Citations 16

Authors

E G Biosca

C Amaro

Affiliations

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Abstract

In this work, the enzymatic activities of selected strains of biotypes 1 and 2 of Vabrio vulnificus were analyzed by using conventional methods and the API ZYM system. The toxic activities of extracellular products (ECPs) were further evaluated by in vitro and in vivo experiments. The ECPs of both biotypes (i) showed high-level hydrolytic activities, (ii) displayed cytotoxicity for fish cell lines, and (iii) were lethal for eels. Exotoxins seem to be proteinaceous since heat treatment of ECP samples destroyed their toxicity. Only biotype 2 strains were virulent for cels, suggesting that host specificity must be related to differences in cell surface properties. Infectivity trials with other fish species also revealed that only biotype 2 strains were virulent.

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