Host-microbiome interaction in fish and shellfish: An overview

Harke, Sanjay; Panche, Archana N

doi:10.1016/j.fsirep.2023.100091

Cited by 19 publications

(12 citation statements)

References 185 publications

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“…Studies elucidated that the dialogue between the gut microbes and its host could be triggered by the host intrinsic factors, the composition and metabolic activity of gut microbiome, or nonmetabolic interplay like direct cell–cell interactions or microbial secretion of peptides. Gut microbes can modulate the absorption of metabolites or other small molecular substance by the host, and the core microbial community in the gut has equal effect on the host biology. , …”

Section: Discussionmentioning

confidence: 99%

“…Gut microbes can modulate the absorption of metabolites or other small molecular substance by the host, and the core microbial community in the gut has equal effect on the host biology. 67,68 Under exogenous iAs exposure, the thriving of As-resistant bacteria and the recession of harmful bacteria jointly assisted As metabolism and protected the host from As toxicity in vivo, especially in as3mt −/− zebrafish. Based on our results, bacteria genera which facilitate As excretion and biotransformation (such as Shewanella, Cetobacterium, Ensifer, and Defluviimonas) significantly decreased after TET and iAs exposure, and they were negatively correlated with tAs accumulation in tissue of zebrafish.…”

Section: Gut Microbiome Can Modulate Its Structure Under Exogenous Ia...mentioning

confidence: 99%

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Effects of Intestinal Microbiota on the Biological Transformation of Arsenic in Zebrafish: Contribution and Mechanism

Zhong,

Zhang,

Huang

et al. 2024

Environ. Sci. Technol.

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Both the gut microbiome and their host participate in arsenic (As) biotransformation, while their exact roles and mechanisms in vivo remain unclear and unquantified. In this study, as3mt −/− zebrafish were treated with tetracycline (TET, 100 mg/ L) and arsenite (iAs III ) exposure for 30 days and treated with probiotic Lactobacillus rhamnosus GG (LGG, 1 × 10 8 cfu/g) and iAs III exposure for 15 days, respectively. Structural equation modeling analysis revealed that the contribution rates of the intestinal microbiome to the total arsenic (tAs) and inorganic As (iAs) metabolism approached 44.0 and 18.4%, respectively. Compared with wild-type, in as3mt −/− zebrafish, microbial richness and structure were more significantly correlated with tAs and iAs, and more differential microbes and microbial metabolic pathways significantly correlated with arsenic metabolites (P < 0.05). LGG supplement influenced the microbial communities, significantly up-regulated the expressions of genes related to As biotransformation (gss and gst) in the liver, down-regulated the expressions of oxidative stress genes (sod1, sod2, and cat) in the intestine, and increased arsenobetaine concentration (P < 0.05). Therefore, gut microbiome promotes As transformation and relieves As accumulation, playing more active roles under iAs stress when the host lacks key arsenic detoxification enzymes. LGG can promote As biotransformation and relieve oxidative stress under As exposure.

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Section: Discussionmentioning

confidence: 99%

Section: Gut Microbiome Can Modulate Its Structure Under Exogenous Ia...mentioning

confidence: 99%

Effects of Intestinal Microbiota on the Biological Transformation of Arsenic in Zebrafish: Contribution and Mechanism

Zhong,

Zhang,

Huang

et al. 2024

Environ. Sci. Technol.

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“…In fish, the number of microorganisms inhabiting the GIT has been estimated in the range of 10 7 –10 8 per gram [ 2 ]. However, the GIT microbiota is highly variable and its normal variation in abundance and diversity of microorganisms is affected by several factors [ 3 ] including age, diet, host genetics, and the environment (freshwater, seawater). Feeding habits are surely one of the most relevant factors affecting the composition of the GIT microbiota among fish species.…”

Section: Introductionmentioning

confidence: 99%

“…Feeding habits are surely one of the most relevant factors affecting the composition of the GIT microbiota among fish species. Indeed, it is well known how different dietary habits (herbivores, carnivores, omnivores, detritivores) come together with variations in both fish GIT morphology and microbial populations [ 3 , 4 , 5 ]. The strict correlation between the structures of the digestive apparatus and the feeding habit of fishes [ 6 ], as revealed in some morphometric parameters such as the intestinal length and area, highly influences the microbial populations detected along the alimentary canal [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, after administration, probiotics are able to colonize and multiply in the gut of the host and enact numerous beneficial effects by modulating various biological systems in the host [ 11 , 12 ], including immune status, growth performance, disease resistance, and feed conversion, with an overall improvement of the fish health status [ 13 , 14 ]. Probiotics, together with other additives such as prebiotics, which are referred to as the food or energy provider for good microorganisms [ 15 ], aim to optimize the host–microbiota ratio, which plays a key role in ensuring the proper functioning of the fish GIT [ 3 , 16 ]. Therefore, for all the above-mentioned reasons, the use of these feed additives has gained a key strategic role in the aquaculture sector [ 14 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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Histomorphological Changes in Fish Gut in Response to Prebiotics and Probiotics Treatment to Improve Their Health Status: A Review

De Marco,

Cappello,

Maisano

2023

Animals

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The gastrointestinal tract (GIT) promotes the digestion and absorption of feeds, in addition to the excretion of waste products of digestion. In fish, the GIT is divided into four regions, the headgut, foregut, midgut, and hindgut, to which glands and lymphoid tissues are associated to release digestive enzymes and molecules involved in the immune response and control of host-pathogens. The GIT is inhabited by different species of resident microorganisms, the microbiota, which have co-evolved with the host in a symbiotic relationship and are responsible for metabolic benefits and counteracting pathogen infection. There is a strict connection between a fish’s gut microbiota and its health status. This review focuses on the modulation of fish microbiota by feed additives based on prebiotics and probiotics as a feasible strategy to improve fish health status and gut efficiency, mitigate emerging diseases, and maximize rearing and growth performance. Furthermore, the use of histological assays as a valid tool for fish welfare assessment is also discussed, and insights on nutrient absorptive capacity and responsiveness to pathogens in fish by gut morphological endpoints are provided. Overall, the literature reviewed emphasizes the complex interactions between microorganisms and host fish, shedding light on the beneficial use of prebiotics and probiotics in the aquaculture sector, with the potential to provide directions for future research.

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