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. 1995 Feb;61(2):476–480. doi: 10.1128/aem.61.2.476-480.1995

Sandwich enzyme-linked immunosorbent assay for Vibrio vulnificus hemolysin to detect V. vulnificus in environmental specimens.

R W Parker 1, D H Lewis 1
PMCID: PMC167305  PMID: 7574583

Abstract

Vibrio vulnificus hemolysin, purified by quantitative isoelectric focusing, was used to prepare rabbit and goat anti-hemolysin. The resulting antibodies were used as capture and detector antibody reagents in a sandwich enzyme-linked immunosorbent assay (ELISA) to detect V. vulnificus in environmental samples. By this technique, 4 laboratory-maintained V. vulnificus strains and 33 environmental V. vulnificus isolates were detected. Also, the technique distinguished five other Vibrio species from V. vulnificus, and when it was used in combination with colistin-polymyxin-cellobiose agar, 31 non-V. vulnificus isolated were excluded. This sandwich ELISA compared favorably with the current Food and Drug Administration standard immunoassay in confirming presumptive V. vulnificus colonies from environmental specimens: oysters, sediment, and seawater. Among 340 presumptive V. vulnificus colonies, the sandwich ELISA detected 95% of the confirmed V. vulnificus colonies. Equally important, the technique correctly distinguished 99% of the non-V. vulnificus colonies. The sandwich ELISA offers time-saving and labor-saving advantages over the currently accepted immunoassay.

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Selected References

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