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. 1981 Aug;33(2):583–590. doi: 10.1128/iai.33.2.583-590.1981

Detection of extracellular toxin(s) produced by Vibrio vulnificus.

A Kreger, D Lockwood
PMCID: PMC350739  PMID: 7024134

Abstract

Conditions are described for the production, in high titers, a heat-labile, antigenic, extracellular toxin(s) by Vibrio vulnificus, a recently recognized human pathogen. Bacteriologically sterile culture filtrate preparations obtained from mid-logarithmic-phase cultures of the bacterium possessed cytolytic activity against mammalian erythrocytes, cytotoxic activity for Chinese hamster ovary cells, vascular permeability factor activity in guinea pig skin, and lethal activity for mice. The specific activity of toxin preparations from cultures of a virulent strain of the bacterium was ca. 25-fold more than that of toxin preparations obtained from cultures of a weakly virulent strain. The four toxic activities were inseparable by gel filtration with Sephadex G-100; however, two components, which had markedly different elution behavior but which possessed the four activities mentioned above, were obtained. The major (ca. 88% of the recovered activity) and minor components had apparent molecular weights of ca. 38,500 and greater than 150,000, respectively.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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