Hepatic cecum: a key integrator of immunity in amphioxus

Qu, Baozhen; Zhang, Shicui; Ma, Zhiyu; Gao, Zhan

doi:10.1007/s42995-020-00080-w

Cited by 9 publications

(4 citation statements)

References 117 publications

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“…Gut microbiota are sometimes considered to be another “brain” of the host, and they play an irreplaceable role in host nutrient acquisition (Sullam et al 2015 ), immune response (Qu et al 2021 ), and pathogen defense (Libertucci and Young 2019 ). Previous studies have shown a tight link between gut microbiota and shrimp health (Cornejo-Granados et al 2017 ; Xiong et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Contrasting patterns of bacterial communities in the rearing water and gut of Penaeus vannamei in response to exogenous glucose addition

Huang

Guo

Liu

et al. 2022

Mar Life Sci Technol

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Supplementing exogenous carbon sources is a practical approach to improving shrimp health by manipulating the microbial communities of aquaculture systems. However, little is known about the microbiological processes and mechanisms of these systems. Here, the effects of glucose addition on shrimp growth performance and bacterial communities of the rearing water and the shrimp gut were investigated to address this knowledge gap. The results showed that glucose addition significantly improved the growth and survival of shrimp. Although the α-diversity indices of both bacterioplankton communities and gut microbiota were significantly decreased by adding glucose, both bacterial communities exhibited divergent response patterns to glucose addition. Glucose addition induced a dispersive bacterioplankton community but a more stable gut bacterial community. Bacterial taxa belonging to Ruegeria were significantly enriched by glucose in the guts, especially the operational taxonomic unit 2575 (OTU2575), which showed the highest relative importance to the survival rate and individual weight of shrimp, with the values of 43.8 and 40.6%, respectively. In addition, glucose addition increased the complexity of interspecies interactions within gut bacterial communities and the network nodes from Rhodobacteraceae accounted for higher proportions and linked more with the nodes from other taxa in the glucose addition group than that in control. These findings suggest that glucose addition may provide a more stable gut microbiota for shrimp by increasing the abundance of certain bacterial taxa, such as Ruegeria.

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Section: Introductionmentioning

confidence: 99%

Contrasting patterns of bacterial communities in the rearing water and gut of Penaeus vannamei in response to exogenous glucose addition

Huang

Guo

Liu

et al. 2022

Mar Life Sci Technol

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“…Cephalochordate PACs have been shown to display immune function, and the intestine and gills are distinctive as compartments with digestive and immunological function. [102][103][104][105][106][107] Notably, the presence of macrophage-like PACs has been linked to nutritional and immune-like programs. [108][109][110] Some cephalochordate PACs can be found circulating in or attached to the vasculature lumen.…”

Section: Arthropod Pacs: Mesodermderived Hematopoietic Cells Closely ...mentioning

confidence: 99%

“…Cephalochordata is a subphylum that branches basally within the chordates and is represented by the amphioxus. Cephalochordate PACs have been shown to display immune function, and the intestine and gills are distinctive as compartments with digestive and immunological function 102‐107 . Notably, the presence of macrophage‐like PACs has been linked to nutritional and immune‐like programs 108‐110 .…”

Section: Deuterostomiamentioning

confidence: 99%

Gradual specialization of phagocytic ameboid cells may have impaired regenerative capacities in metazoan lineages

Lima

Abrahão

Pentagna

et al. 2022

Developmental Dynamics

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Animal regeneration is a fascinating field of research that has captured the attention of many generations of scientists. Among the cellular mechanisms underlying tissue and organ regeneration, we highlight the role of phagocytic ameboid cells (PACs). Beyond their ability to engulf nutritional particles, microbes, and apoptotic cells, their involvement in regeneration has been widely documented. It has been extensively described that, at least in part, animal regenerative mechanisms rely on PACs that serve as a hub for a range of critical physiological functions, both in health and disease. Considering the phylogenetics of PAC evolution, and the loss and gain of nutritional, immunological, and regenerative potential across Metazoa, we aim to discuss when and how phagocytic activity was first co‐opted to regenerative tissue repair. We propose that the gradual specialization of PACs during metazoan derivation may have contributed to the loss of regenerative potential in animals, with critical impacts on potential translational strategies for regenerative medicine.

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“…Gut microbiota is known as a metabolically active "organ", since bacterial metabolism in the gut is responsible for most of the gut functions such as improving immune response, nutrient absorption, intestinal tract homeostasis, physiological regulation, and pathogen defense (Hou et al, 2020;Qu et al, 2021;Huang et al, 2022). Extensive research has revealed that abiotic variables, food composition, trophic levels, and developmental stages have a profound effect on the gut microbiota of aquatic animals (Xiong et al, 2017;Cornejo-Granados et al, 2018;Lim et al, 2019;Wilkes-Walburn et al, 2019;Hou et al, 2020;Xue et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Understanding the effects of salinity and Vibrio harveyi on the gut microbiota profiles of Litopenaeus vannamei

Deris

Iehata

Gan³

et al. 2022

Front. Mar. Sci.

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Increasing evidence have revealed a positive correlation between gut microbiota and shrimp health, in which a healthy shrimp gut consists of a complex and stable microbial community. Given that both abiotic and biotic factors constantly regulate shrimp gut microbiota, any changes affecting the levels of these factors could cause modification to the gut microbiota assemblage. The goal of this study was to explore the effects of salinity levels and pathogenic Vibrio harveyi infection on the diversity, structure, composition, interspecies interaction, and functional pathways of Litopenaeus vannamei gut microbiota. Juvenile shrimp were cultured at 5 ppt, 20 ppt, and 30 ppt for two months prior to Vibrio harveyi infection. After pathogenic V. harveyi challenge test, genomic DNA was isolated from the shrimp gut, and subjected to the 16S rRNA metagenomic sequencing analysis. We observed that gut microbiota diversity of shrimp cultured at 5 ppt and 30 ppt were lower than those cultured at 20 ppt after exposure to V. harveyi infection, suggesting that shrimp cultured at the two former salinity levels were more susceptible to V. harveyi infection. Network analysis also showed that shrimp cultured at 20 ppt exhibit a more stable bacterial network with complex interspecies interaction, even after induced by V. harveyi. Moreover, the presence of a high number of beneficial bacteria such as Pseudoruegeria, Rhodovulum, Ruegeria, Shimia and Lactobacillus in shrimp cultured at 20 ppt might have played a role in inhibiting the growth of V. harveyi and other potentially pathogenic bacteria. Besides, bacterial functional pathway prediction has also shown that metabolic pathways such as phenylalanine metabolism, glycine, serine and threonine metabolism, starch and sucrose metabolism, glyoxylate and dicarboxylate metabolism, carbon metabolism and biofilm formation process were significantly higher in shrimp cultured at 20 ppt. Collectively, our results suggested that 20 ppt is an optimal salinity that suppresses the growth of V. harveyi and potential pathogenic bacteria in the shrimp gut, which could possibly minimize the risk of pathogenic infection for sustainable production of healthy shrimp.

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Hepatic cecum: a key integrator of immunity in amphioxus

Cited by 9 publications

References 117 publications

Contrasting patterns of bacterial communities in the rearing water and gut of Penaeus vannamei in response to exogenous glucose addition

Contrasting patterns of bacterial communities in the rearing water and gut of Penaeus vannamei in response to exogenous glucose addition

Gradual specialization of phagocytic ameboid cells may have impaired regenerative capacities in metazoan lineages

Understanding the effects of salinity and Vibrio harveyi on the gut microbiota profiles of Litopenaeus vannamei

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