The efficacy of five avirulent Edwardsiella tarda strains in a live vaccine against Edwardsiellosis in Japanese flounder, Paralichthys olivaceus.
Fish Shellfish Immunol
; 29(4): 687-93, 2010 Oct.
Article
em En
| MEDLINE
| ID: mdl-20633656
ABSTRACT
We evaluated the tissue persistence and live vaccine efficacy of five avirulent Edwardsiella tarda strains (E22, SU100, SU117, SU138, and SU244) isolated from the Japanese eel (Anguilla japonica) and from the environment. The live vaccines, containing a single strain, were injected intraperitoneally into Japanese flounder (Paralichthys olivaceus). Viable bacteria from all the strains (excluding SU100) were recovered from trunk-kidney tissue 28 d post-injection. Japanese flounder inoculated with E22 had the highest relative percentage survival (RPS = 45%) in an artificial challenge with virulent E. tarda (NUF806). The serum of E22-vaccinated fish had a significantly higher agglutination titer against NUF806. In contrast, there was little or no increase in the agglutination titer of the fish that were inoculated with the remaining avirulent strains. Injection with avirulent E. tarda increased the expression of cytokine genes, including interleukin-1beta (IL-1beta), type 1 interferon (IFN), and IFN-gamma in head-kidney of the Japanese flounder.
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Base de dados:
MEDLINE
Assunto principal:
Linguado
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Vacinas Bacterianas
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Edwardsiella tarda
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Infecções por Enterobacteriaceae
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Doenças dos Peixes
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article