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

Dietary myo-inositol modulates immunity through antioxidant activity and the Nrf2 and E2F4/cyclin signalling factors in the head kidney and spleen following infection of juvenile fish with Aeromonas hydrophila

“…A very recent study showed that MI could enhance macrophagemediated phagocytosis in the mouse spleen [78]. As mentioned above, complement and lysozyme also play roles in the phagocytosis of fish through opsonisation [56,59]. Second, the decreased CAT and GPx activities and their mRNA levels caused by excessive MI might be partially explained by the observation that CAT, GPx and MI share similar actions and can scavenge hydroxyl radicals; thus, negative feedback could decrease the de novo gene transcription and the corresponding activities of these antioxidant enzymes.…”

“…The complements are the most active promoters and play important roles in phagocytosis in fish through opsonisation [59]. Among the complements, C3 and C4 play pivotal roles in the activation of the complement system [60].…”

Issues of Antibiotic Resistance in Aquaculture Industry and Its Way Forward

“…There is report of increase in different innate immune system upon administration/intake of probiotics i.e. In tilapia (Oreochromis niloticus) a two weeks feeding of Lactobacillus rhamnosus significantly stimulates phagocytosis (Pirarat et al, 2006), Stimulation of lysozyme activity in rainbow trout was observed after two weeks feeding with Kocuria sp. SM1 (Sharifuzzaman and Austin, 2009) and Carnobacterium divergens B33 (Sakai et al, 1995), Probiotics such as L. rhamnosus, E. faecium and B. subtilis are found to up regulate the proinflammatory cytokines such as IL-1b1 and TGF b in the spleen and head kidney of the O. mykiss (Panigrahi et al, 2007), Sharifuzzaman and Austin(2009) also reported significantly higher anti-protease activity in O. mykiss within two weeks of the completion of probiotic species Kocuria.…”

Effect of Lactobacillus rhamnosus cells against specific and native fish spoilage bacteria and their spoilage indices on Asian seabass fish chunks

“…rhamnosus cells were controlled Edward siellatarda infection and the cumulative mortality caused by E. tarda in Tilapia (Oreochromis niloticus) fish (Pirarat et al, 2006). Therefore, it was evident that the concentrated filtrate (spent culture) of Lb.…”