Immunological response of 35 and 42 days old Asian seabass (Lates calcarifer, Bloch 1790) fry following immersion immunization with Streptococcus iniae heat-killed vaccine

Vinh, Nguyen Tien; Dong, Ha Thanh; Lan, Nguyen Giang Thu; Sangsuriya, Pakkakul; Salin, Krishna R.; Chatchaiphan, Satid; Senapin, Saengchan

doi:10.1016/j.fsi.2023.108802

Cited by 8 publications

(3 citation statements)

References 69 publications

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“…The first significant increase was observed in fish aged 4 weeks, with an average weight of 0.085 g [ 56 ]. In Asian seabass ( L. calcarifer ) at 35 and 42 dph with weights of approximately 0.10 ± 0.03 and 0.25 ± 0.14 g, respectively, a statistically significant increase in specific IgM levels against S. iniae was observed after administration of the heat-killed S. iniae vaccine after 7 days [ 57 ].…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, the vaccine was effective in upregulating several immune-related genes, such as TCRβ , CD4 , MHCIIα , IgM , IgT and IgD, in immune-related tissues, including the head kidney, spleen, PBLs, and gills, which is well supported by previous studies and other publications [ 63 , 64 ]. For example, in Asian seabass ( Lates calcarifer ), at 35 and 42 days posthatching (dph) and 7 days after vaccination, there was a statistically significant increase in the expression of the CD4 , MHCIIα , IgM , IgT , and IgD genes [ 57 ]. In juvenile Nile tilapia, various nanovaccines were used to treat francisellosis and columnaris via immersion.…”

Section: Discussionmentioning

confidence: 99%

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First Investigation of the Optimal Timing of Vaccination of Nile Tilapia (Oreochromis niloticus) Larvae against Streptococcus agalactiae

Kumwan,

Bunnoy,

Chatchaiphan

et al. 2023

Vaccines

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To investigate early immune responses and explore the optimal vaccination periods, Nile tilapia at 1, 7, 14, 21, 28, 35, and 42 days after yolk sac collapse (DAYC) were immersed in formalin-killed Streptococcus agalactiae vaccine (FKV-SA). A specific IgM was first detected via ELISA in the 21 DAYC larvae (0.108 g) at 336 h after vaccination (hav), whereas in the 28–42 DAYC larvae (0.330–0.580 g), the specific IgM could be initially detected at 24 hav. qRT–PCR analysis of the TCRβ, CD4, MHCIIα, IgHM, IgHT, and IgHD genes in 21–42 DAYC larvae immunized with the FKV-SA immersion route for 24, 168, and 336 hav revealed that the levels of most immune-related genes were significantly higher in the vaccinated larvae at all DAYCs than in the control larvae (p < 0.05) at 336 hav. Immunohistochemistry demonstrated stronger IgM signals in the gills, head kidney, and intestine tissues at 21, 28, and 35 DAYC in all vaccinated larvae compared with the control. Interestingly, at all DAYCs, FKV-SA larvae exhibited significantly higher survival rates and an increased relative percent survival (RPS) than the control after challenge with viable S. agalactiae, particularly in larvae that were immunized with FKV-SA at 168 and 336 hav (p < 0.05).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

First Investigation of the Optimal Timing of Vaccination of Nile Tilapia (Oreochromis niloticus) Larvae against Streptococcus agalactiae

Kumwan,

Bunnoy,

Chatchaiphan

et al. 2023

Vaccines

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“…For instance, a study reported higher levels of expression of various innate and adaptive immune genes in fish administered a bivalent vaccine composed of bacterins (formalin-killed cells) [ 122 ]. Another study demonstrated efficacy in protection against S. iniae in rainbow trout ( Oncorhynchus mykiss ) with an oral vaccine of alginate-chitosan enhanced by an ionotropic procedure [ 123 ]. The combination of oral and immersion application strategies has also been reported with good results [ 124 ].…”

Section: Strategies To Combat Infectionmentioning

confidence: 99%

Streptococcus iniae in aquaculture: a review of pathogenesis, virulence, and antibiotic resistance

Juárez-Cortés,

Vázquez,

Díaz

et al. 2024

International Journal of Veterinary Science and Medicine

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One of the main challenges in aquaculture is pathogenic bacterial control. Streptococcus iniae stands out for its ability to cause high mortality rates in populations of commercially important fish populations and its recent recognition as an emerging zoonotic pathogen. The rise in identifying over 80 strains some displaying antibiotic resistance coupled with the emerging occurrence of infections in marine mammal species and wild fish underscores the urgent need of understanding pathogenesis, virulence and drug resistance mechanisms of this bacterium. This understanding is crucial to ensure effective control strategies. In this context, the present review conducts a bibliometric analysis to examine research trends related to S. iniae , extending into the mechanisms of infection, virulence, drug resistance and control strategies, whose relevance is highlighted on vaccines and probiotics to strengthen the host immune system. Despite the advances in this field, the need for developing more efficient identification methods is evident, since they constitute the basis for accurate diagnosis and treatment.

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Synthetic peptides derived from predicted B cell epitopes of nervous necrosis virus (NNV) show antigenicity and elicit immunogenic responses in Asian seabass (Lates calcarifer)

Jungi

Machimbirike

Linh

et al. 2023

Fish & Shellfish Immunology

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Immunological response of 35 and 42 days old Asian seabass (Lates calcarifer, Bloch 1790) fry following immersion immunization with Streptococcus iniae heat-killed vaccine

Cited by 8 publications

References 69 publications

First Investigation of the Optimal Timing of Vaccination of Nile Tilapia (Oreochromis niloticus) Larvae against Streptococcus agalactiae

First Investigation of the Optimal Timing of Vaccination of Nile Tilapia (Oreochromis niloticus) Larvae against Streptococcus agalactiae

Streptococcus iniae in aquaculture: a review of pathogenesis, virulence, and antibiotic resistance

Synthetic peptides derived from predicted B cell epitopes of nervous necrosis virus (NNV) show antigenicity and elicit immunogenic responses in Asian seabass (Lates calcarifer)

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