EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Protective effects and mechanisms of a probiotic bacterium Lactobacillus rhamnosus against experimental Edwardsiella tarda infection in tilapia (Oreochromis niloticus)



Protective effects and mechanisms of a probiotic bacterium Lactobacillus rhamnosus against experimental Edwardsiella tarda infection in tilapia (Oreochromis niloticus)



Veterinary Immunology and Immunopathology 113(3-4): 339-347



In recent years, probiotics, especially lactic acid bacteria, have been used as dietary supplements to protect fish from various infections. Here, we examined the protective effects of Lactobacillus rhamnosus against experimental Edwardsiella tarda infection in tilapia (Oreochromis niloticus). Cumulative mortality was significantly lower in probiotic-supplemented fish than in control fish. In a histopathological survey, pyogranulomatous responses were observed at an earlier stage and to a greater extent in the probiotic-supplemented fish than in the control fish. Immunohistochemistry using an anti-E. tarda antibody revealed a larger number of positive signals in pyogranuloma-participating cells, indicating an enhanced phagocytic ability. Alternative complement activity was significantly higher in the probiotic groups than in the control. These results suggest that L. rhamnosus enhanced the alternative complement system of the fish, enabling phagocytic cell aggregation, increasing phagocytic activity and subsequently protecting the fish from acute septicemic death by E. tarda infection. Prevention of thymic necrosis by the probiotic supplement seems to minimize immunosuppression and to initiate an immune response against edwardsiellosis.

(PDF same-day service: $19.90)

Accession: 012461959

Download citation: RISBibTeXText

PMID: 16870266

DOI: 10.1016/j.vetimm.2006.06.003



Related references

Enhanced resistance against Edwardsiella tarda infection in tilapia (Oreochromis niloticus) by administration of protein-bound polysaccharide. Aquaculture 143(2): 135-143, 1996

Lymphoid apoptosis in Edwardsiella tarda septicemia in tilapia, Oreochromis niloticus. Fish & Shellfish Immunology 22(6): 608-616, 2006

Lymphoid apoptosis in Edwardsiella tarda septicaemia in tilapia, Oreochromis niloticus. Fish and Shellfish Immunology 22(6): 608-616, 2007

Isolation and identification of Edwardsiella tarda from infected tilapia fish Oreochromis niloticus. Bulletin of Faculty of Agriculture Cairo University ober; 56(4): 839-848, 2005

Characteristics and histopathological observation of Edwardsiella tarda isolated from tilapia (Oreochromis niloticus). Bulletin of National Fisheries Research and Development Agency. December; 48: 139-145, 1993

Isolation and identification of Edwardsiella tarda from infected Nile tilapia fish Oreochromis niloticus. Bulletin of Faculty of Agriculture, Cairo University 56(4): 839-846, 2005

Blood parameters in Nile tilapia (Oreochromis niloticus L.) spontaneously infected with Edwardsiella tarda. Aquaculture research26 35(14): 1388-1390, 2004

Bacterial distribution and tissue targets following experimental Edwardsiella ictaluri infection in Nile tilapia Oreochromis niloticus. Diseases of Aquatic Organisms 104(2): 105-112, 2013

No synergistic effects by the dietary supplementation of ascorbic acid, a-tocopheryl acetate and selenium on the growth performance and challenge test of Edwardsiella tarda in fingerling Nile tilapia, Oreochromis niloticus L. Aquaculture research9 34(12): 1053-1058, 2003

Effects of a novel marine probiotic, Lactobacillus plantarum AH 78, on growth performance and immune response of Nile tilapia (Oreochromis niloticus). Journal of Applied Microbiology 120(4): 1061-1073, 2016

No synergistic effects by the dietary supplementation of ascorbic acid, alpha-tocopheryl acetate and selenium on the growth performance and challenge test of Edwardsiella tarda in fingerling Nile tilapia, Oreochromis niloticus L. Aquaculture Research 34(12): 1053-1058, 9 October, 2003

Modulation of intestinal morphology and immunity in nile tilapia (Oreochromis niloticus) by Lactobacillus rhamnosus GG. Research in Veterinary Science 91(3): E92-E97, 2012

Experimental infection of Tilapia Lake Virus (TiLV) in Nile tilapia (Oreochromis niloticus) and red tilapia (Oreochromis spp.). Veterinary Microbiology 207: 170-177, 2017

Trials for control of edwardsiellosis by immersion vaccination (B) the role of some environmental factors on the immune response of Nile tilapia (Oreochromis niloticus) against Edwardsiella tarda crude lipopolysaccharide. Assiut Veterinary Medical Journal 33(66): 136-142, 1995

Agonistic encounters and territoriality between males of hybrid red tilapia, Oreochromis niloticus Linnaeus, 1758 x Oreochromis mossambicus Peters, 1852 and Nile tilapia, Oreochromis niloticus Cichlidae Encontros agonisticos e territorialidade entre machos de hibrido vermelho de tilapia, Oreochromis niloticus Linnaeus, 1758 x Oreochromis mossambicus Peters, 1852 e de tilapia do Nilo, Oreochromis niloticus Cichlidae. Revista Brasileira de Zoociencias. Dezembro; 72: 273-284, 2005