Efficacy of intraperitoneal and immersion vaccination against Enterococcus sp. infection in turbot

Toranzo, Alicia E.; Devesa, Sergio; Romalde, Jesús L.; Lamas, Jesús; Riaza, A.; Leiro, J.; Barja, Juan L.

doi:10.1016/0044-8486(95)00038-4

Cited by 61 publications

(34 citation statements)

References 18 publications

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“…During the early days of inactivated vaccine development, most products contained inactivated bacteria mixed with their extracellular products (Eldar et al 1995, Evans et al 2004, Pasnik et al 2005, because several killed vaccines had been shown to be efficient against piscine bacterial disease caused by S. iniae (Eldar et al 1997) and Enterococcus spp. (Toranzo et al 1995). A formalin-killed S. agalactiae vaccine was tested successfully on tilapia for the first time in 1995 (Eldar et al 1995).…”

Section: Whole-cell Inactivated Vaccinementioning

confidence: 99%

Development of Streptococcus agalactiae vaccines for tilapia

Liu¹,

Zhu²,

Chen³

et al. 2016

Dis. Aquat. Org.

102

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Vaccination is a widely accepted and effective method to prevent most pathogenic diseases in aquaculture. Various species of tilapia, especially Nile tilapia Oreochromis niloticus, are farmed worldwide because of their high consumer demand. Recently, the tilapia-breeding industry has been hampered by outbreaks of Streptococcus agalactiae infection, which cause high mortality and huge economic losses. Many researchers have attempted to develop effective S. agalactiae vaccines for tilapia. This review provides a summary of the different kinds of S. agalactiae vaccines for tilapia that have been developed recently. Among the various vaccine types, inactivated S. agalactiae vaccines showed superior protection efficiency when compared with live attenuated, recombinant and DNA vaccines. With respect to vaccination method, injecting the vaccine into tilapia provided the most effective immunoprotection. Freund's incomplete adjuvant appeared to be suitable for tilapia vaccines. Other factors, such as immunization duration and number, fish size and challenge dose, also influenced the vaccine efficacy.

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Section: Whole-cell Inactivated Vaccinementioning

confidence: 99%

Development of Streptococcus agalactiae vaccines for tilapia

Liu¹,

Zhu²,

Chen³

et al. 2016

Dis. Aquat. Org.

102

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“…can be isolated from the water, plants and from the excretion of animals and humans as a commensal microorganism. It is responsible for considerable economic losses in cultured yellowtail (Seriola quinqueradiata) (Kusuda and Salati, 1993), turbot (Scophthalmus maximus) (Toranzo et al, 1995) and tilapia (Plumb, 1999). Its presence is common in integrated fish culture (Petersen and Dalsgaard, 2003).…”

Section: Introductionmentioning

confidence: 99%

Haematological changes in Nile tilapia experimentally infected with Enterococcus sp.

et al. 2008

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“…1993), A. hydrophila (Selvaraj et al, 2005), Streptococcus iniae (Russo et al, 2006) and Vibrio harveyi (Ai et al, 2007) but failed to protect turbot (Scophthalmus maximus Rafinesque 1810) against Enterococcus sp. (Toranzo et al, 1995) or against V. anguillarum (Ogier de Baulny et al, 1996), and channel catfish (Ictaurus punctatus Rafinesque 1818) against Edwardsiella ictaluri (Duncan and Klesius, 1996). The increased survival observed in pacu can be correlated with some immune responses assayed such as the WBC count, that increased either in pacu fed with β-glucan or in fish injected with A. hydrophila since leukocytes are considered to be a health indicator because of its role in cellular immunity.…”

Section: Discussionmentioning

confidence: 98%

Disease resistance of pacu Piaractus mesopotamicus (Holmberg, 1887) fed with β-glucan

et al. 2014

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Effects of β-glucan on innate immune responses and survival were studied in pacu experimentally infected with Aeromonas hydrophila. Fish fed diets containing 0, 0.1% and 1% β-glucan were injected with A. hydrophila. β-glucan enhanced fish survival in both treated groups (26.7% and 21.2% of the control, respectively). Leukocyte respiratory burst and alternative complement pathway activities were elevated after bacterial challenge regardless the β-glucan concentration. Lysozyme activity was higher after infection and showed a gradual increase as β-glucan concentration increased. A significant elevation in WBC count was observed either after bacterial challenge or by influence of β-glucan separately. The same response was observed in the number of thrombocytes, lymphocytes, eosinophils, LG-PAS positive cell and monocytes. It can be concluded that feeding pacu with β-glucan can increase protection against A. hydrophila, due to changes in non-specific immune responses.Keywords: immunology, complement system, innate immunity, lysozyme, respiratory burst activity of leukocytes. Resistência à doença em pacu, Piaractus mesopotamicus(Holmberg, 1887), alimentados com β-glucana ResumoOs efeitos da β-glucana sobre as respostas imunes inatas e a sobrevivência foram estudados em pacu experimentalmente infectado com Aeromonas hydrophila. Peixes alimentados com dietas contendo 0,1% e 1% de β-glucana foram injetados com 1 x 10 8 CFU de A. hydrophila após 7 dias de alimentação. A sobrevivência de peixes foi maior nos dois grupos tratados em comparação ao grupo controle (26,7% e 21,2%, respectivamente). A atividade respiratória de leucócitos e a atividade hemolítica do complemento -via alternativa estavam elevadas após desafio bacteriano independentemente da concentração de β-glucana. A atividade de lisozima foi maior após a infecção e mostrou um aumento gradual de acordo com a concentração do imunoestimulante. Observou-se um aumento significativo na contagem de leucócitos totais após o desafio bacteriano e influência de β-glucana. A mesma resposta foi observada para trombócitos, linfócitos, eosinófilos, leucócito PAS positivo e monócitos. Com exceção de neutrófilos, que diminuíram frente ao mais alto nível do imunoestimulante e não se alteraram após a infecção, as outras células aumentaram após a exposição à A. hydrophila. A β-glucana não afetou os níveis de proteína total do soro, que aumentaram após o desafio bacteriano. Conclui-se que a administração de β-glucana em pacu pode aumentar a proteção contra A. hydrophila, por alterações nas respostas imunes de não-específicas.Palavras-chave: imunologia, sistema complemento, imunidade inata, lisozima, atividade respiratória de leucócitos.

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Efficacy of intraperitoneal and immersion vaccination against Enterococcus sp. infection in turbot

Cited by 61 publications

References 18 publications

Development of Streptococcus agalactiae vaccines for tilapia

Development of Streptococcus agalactiae vaccines for tilapia

Haematological changes in Nile tilapia experimentally infected with Enterococcus sp.

Disease resistance of pacu Piaractus mesopotamicus (Holmberg, 1887) fed with β-glucan

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