Comparative histopathology of edwardsiellosis in fishes.

Miyazaki, Teruo; Kaige, Noboru

doi:10.3147/jsfp.20.219

Cited by 88 publications

(76 citation statements)

References 8 publications

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“…production of dermatotoxins against rabbit (Ullah and Arai, 1983), cytotoxic hemolysins (Janda et al, 1991;Strauss et al, 1997), lethal toxins (Hari Suprapto et al, 1995), siderophore (Kokubo et al, 1990;Igarashi et al, 2002), and the ability to resist phagocytic and serum killing (Miyazaki and Kaige, 1985;Iida and Wakabayashi, 1993). However, the role of these factors in the pathogenicity of E. tarda has not been fully understood.…”

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confidence: 99%

Induction of Hemagglutinating Activity of Edwardsiella tarda by Sodium Chloride

Yasunobu¹,

Arikawa²,

Furutsuka³

et al. 2006

Fish Pathol.

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ABSTRACT-The hemagglutinating activity (HA) of Edwardsiella tarda, which had been isolated from cultured fish and culture environments, was investigated in relation to NaCl concentration of the growth medium. E. tarda cells were cultured in a peptone-yeast extract broth supplemented with 3% NaCl (3%-NaCl culture) and without NaCl (0%-NaCl culture). Hemagglutination assays with guinea pig erythrocytes classified the strains into three HA patterns. Seventeen strains exhibited HA only with the 3%-NaCl culture (type A). A more frequent type (35 strains) displayed HA in both 0%-and 3%-NaCl cultures but the 3%-NaCl culture showed higher HA activity than the 0%-NaCl culture (type B). No HA was detected in both cultures of the other three strains (type C). The NaCl-induced HA was well correlated with the expression of a 19.3 kDa protein, a fimbrial major subunit (FimA). Infection experiments with a selected strain (type A) of E. tarda revealed that the 3%-NaCl culture was more virulent to Japanese flounder Paralichthys olivaceus than the 0%-NaCl culture, when fish were challenged by an oral route. This induction of the fimbrial protein under higher NaCl concentration may play an important role in the virulence of E. tarda in marine environments.

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confidence: 99%

Induction of Hemagglutinating Activity of Edwardsiella tarda by Sodium Chloride

Yasunobu¹,

Arikawa²,

Furutsuka³

et al. 2006

Fish Pathol.

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“…Miyazaki and Kaige (1985b) observed the manifestation of similar pathological signs in crucian carps with motile aeromonad. Wiklund and Bylund (1990) observed various histopathological changes incertain fishes with Pseudomonas anguilliseptica.…”

Section: Resultsmentioning

confidence: 64%

Fish Pathogenic Bacteria <i>(Aeromonas Hydrophilia)</i> Induced Histopathological Attributes in the Spleen and Lymph-Nodes of Swiss Albino Mice

Santra²

2012

Bangladesh J. Sci. Ind. Res.

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The effect of fish pathogenic bacteria, Aeromonas hydrophilia on the spleen and lymph-nodes of male Swiss albino mice has been investigated and examined histopathologically. Morphological and histological changes on the 7th, 14th, 21st, and 30th day of infection were noticed. Time exposure showed no significant difference in body weight between control and treated mice but the value showed a tendency towards increment. Spleen weight was increased significantly (p < 0.001) at 14th and 21 st days of post treated mice. The treatment groups showed hepatocellular necrosis of spleen and other immuno-responsive tissue like lymph-node of mice also. The damaging nature of the immuno-responsive tissues of mice to the pathogenesis of bacteria, Aeromonas hydrophilia is provoked in the results obtained.

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“…tarda has been suggested to have an intracellular nature (Miyazaki and Kaige, 1985;lida et al, 1993;Rashid et al, 1997). Activated cell mediated immunity must be required for the successful vaccination against edwardsiellosis.…”

Section: Discussionmentioning

confidence: 99%