Dietary α-ketoglutarate alleviates glycinin and β-conglycinin induced damage in the intestine of mirror carp (Cyprinus carpio)

Luo, Qiaohua; Qian, Rendong; Qiu, Zongsheng; Yamamoto, Fernando Y.; Du, Yingying; Lin, Xi; Zhao, Jianhua; Xu, Qiyou

doi:10.3389/fimmu.2023.1140012

Cited by 6 publications

(2 citation statements)

References 92 publications

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“…For histology and morphology, intestinal tML, lMF and nMF are usually used as indicators to measure its digestion and absorption function (Niu et al, 2021). In this study, 7% b-conglycinin addition decreased tML and lMF of MI and DI, which agreed with the observations in other fish species (Gu et al, 2016b;Duan et al, 2019a;Li et al, 2021;Luo et al, 2023). Unlike 7% b-conglycinin diet, 3% b-conglycinin diet did not show significant alterations in the intestinal morphology vs FM diet.…”

Section: Intestinal Structural Integritysupporting

confidence: 89%

Dietary high β-conglycinin reduces the growth through enhancing hepatic lipid peroxidation and impairing intestinal barrier function of orange-spotted grouper (Epinephelus coioides)

et al. 2023

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β-conglycinin is one of the major soy antigen proteins in soybean meal (SBM) and exhibits growth inhibition and intestinal health damage in grouper, but the underlying mechanisms are still poorly understood. In this study, orange-spotted grouper (Epinephelus coioides) was used to investigate whether the poor growth performance induced by dietary β-conglycinin levels is associated with intestinal structural integrity disruption, the intestinal apoptosis and intestinal microbiota. The basal diet (FM diet) was formulated to contained 48% protein and 12% fat without SBM supplementation. Fish meal protein in the FM diet was replaced by SBM to prepare a high SBM diet (SBM diet). β-conglycinin at 3% and 7% were added into FM diets to prepare two diets (B-3 and B-7). Triplicate groups of fish (20 fish/tank) were fed one of the experimental diets twice daily in a feeding period of 8 weeks. Compared with FM diet, fish fed diets SBM and B-7 had decreased the growth rate, hepatosomatic index, whole-body lipid and ash contents, and increased whole-body moisture content. However, the maximum growth was observed for diet B-3 and was not different from that of FM diet. The liver total antioxidant capacity and glutathione peroxidase activity, the muscle layer thickness of middle and distal intestine, and the mucosal fold length of distal intestine were lower, while liver malondialdehyde content, intestinal diamine oxidase activity, d-lactic acid and endotoxin contents, and the number of intestinal apoptosis were higher in SBM and B-7 groups than that in FM and/or B-3 groups. SBM and B-7 diets down-regulated the intestinal expression of tight junction genes (occludin, claudin-3 and ZO-1), apoptosis genes (bcl-2 and bcl-xL) and anti-inflammatory factor genes (IκBα, TGF-β1 and IL-10), but up-regulated the intestinal expression of apoptosis genes (caspase-3, caspase-8 and caspase-9) and pro-inflammatory factor genes (NF-κB1, RelA, TAK1, IKK, MyD88, TNF-α, IL-1β, and IL-8) vs FM and/or B-3 diets. The richness and diversity indexes of OTUs, Chao1, ACE, Shannon and Simpson were not affected by dietary treatments. The relative abundances of intestinal bacteria (phylum Proteobacteria and genus Vibrio) were generally higher, and relative abundance of phylum Tenericutes was lower in SBM and/or B-7 groups than that in B-3 group. The above results indicate that high dietary β-conglycinin level, rather than intermediate level could decrease liver antioxidant capacity, reshape the intestinal microbiota, and impair the intestinal normal morphology through disrupting the intestinal tight junction structure, increasing intestinal mucosal permeability, and promoting intestinal apoptosis, which in turn triggers intestinal inflammatory responses and the occurrence of enteritis, and ultimately leads to poor growth performance in fish.

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Section: Intestinal Structural Integritysupporting

confidence: 89%

Dietary high β-conglycinin reduces the growth through enhancing hepatic lipid peroxidation and impairing intestinal barrier function of orange-spotted grouper (Epinephelus coioides)

et al. 2023

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“…All assay kits were sourced from Nanjing Jiancheng Bioengineering Institute. The activity of intestinal protease was assessed using the folin-phenol reagent method (32).…”

Section: Biochemical Assaysmentioning

confidence: 99%

Effects of supplementing coated methionine in a high plant-protein diet on growth, antioxidant capacity, digestive enzymes activity and expression of TOR signaling pathway associated genes in gibel carp, Carassius auratus gibelio

Du,

Lin,

Shao

et al. 2024

Front. Immunol.

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This study explored the impacts of supplementation of different levels of coated methionine (Met) in a high-plant protein diet on growth, blood biochemistry, antioxidant capacity, digestive enzymes activity and expression of genes related to TOR signaling pathway in gibel carp (Carassius auratus gibeilo). A high-plant protein diet was formulated and used as a basal diet and supplemented with five different levels of coated Met at 0.15, 0.30, 0.45, 0.60 and 0.75%, corresponding to final analyzed Met levels of 0.34, 0.49, 0.64, 0.76, 0.92 and 1.06%. Three replicate groups of fish (initial mean weight, 11.37 ± 0.02 g) (20 fish per replicate) were fed the test diets over a 10-week feeding period. The results indicated that with the increase of coated Met level, the final weight, weight gain (WG) and specific growth rate initially boosted and then suppressed, peaking at 0.76% Met level (P< 0.05). Increasing dietary Met level led to significantly increased muscle crude protein content (P< 0.05) and reduced serum alanine aminotransferase activity (P< 0.05). Using appropriate dietary Met level led to reduced malondialdehyde concentration in hepatopancreas (P< 0.05), improved superoxide dismutase activity (P< 0.05), and enhanced intestinal amylase and protease activities (P< 0.05). The expression levels of genes associated with muscle protein synthesis such as insulin-like growth factor-1, protein kinase B, target of rapamycin and eukaryotic initiation factor 4E binding protein-1 mRNA were significantly regulated, peaking at Met level of 0.76% (P< 0.05). In conclusion, supplementing optimal level of coated Met improved on fish growth, antioxidant capacity, and the expression of TOR pathway related genes in muscle. The optimal dietary Met level was determined to be 0.71% of the diet based on quadratic regression analysis of WG.

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Soybean Glycinin Reduced Growth Performance and Antioxidant Capacity and Caused Intestinal Inflammation and Microbiome Changes in Large Yellow Croaker (Larimichthys crocea)

Shao,

Li,

You

et al. 2024

Food Frontiers

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Glycinin, a major anti‐nutrient in soybean meal, may trigger enteritis and oxidative stress in fish with overconsumption. However, its impact on intestinal inflammation and underlying signaling mechanisms in Larimichthys crocea remains unclear. The purpose of this study was to assess the effects of glycinin on growth, antioxidant function, inflammatory response, and gut microbiota. Four isonitrogenous and isolipidic experimental feeds were prepared, supplemented with 0%(G0), 3%(G3), 6%(G6), and 12%(G12) glycinin, respectively, and fed to juvenile L. crocea for 10 weeks. The findings indicated that dietary glycinin markedly decreased the growth, feed utilization, and survival rate of L. crocea. In addition, L. crocea fed with G6 and G12 diets showed lower trypsin activity compared with those fed with G0 and G3 diets. Similarly, fish fed with G6 and G12 diets showed higher malondialdehyde content and lower superoxide dismutase activity in the liver compared with those fed with G0 and G3 diets, suggesting that glycinin induced oxidative stress and led to the imbalance of the antioxidant system. Dietary glycinin significantly increased the mRNA expression levels of toll‐like receptors in the gut. Moreover, dietary glycinin resulted in a heightened expression of both C‐rel and p65 proteins, while also elevating the phosphorylation levels of JNK and ERK proteins, indicating that glycinin activated the MAPK/NF‐κB signaling route. In addition, dietary glycinin increased the abundance of pathogenic bacteria in the gut, including Bacteroides and Streptococcus, and reduced the Bifidobacterium abundance. The findings suggested that L. crocea is highly sensitive to glycinin, and a 3% level can cause growth decline and enteritis.

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Dietary α-ketoglutarate alleviates glycinin and β-conglycinin induced damage in the intestine of mirror carp (Cyprinus carpio)

Cited by 6 publications

References 92 publications

Dietary high β-conglycinin reduces the growth through enhancing hepatic lipid peroxidation and impairing intestinal barrier function of orange-spotted grouper (Epinephelus coioides)

Dietary high β-conglycinin reduces the growth through enhancing hepatic lipid peroxidation and impairing intestinal barrier function of orange-spotted grouper (Epinephelus coioides)

Effects of supplementing coated methionine in a high plant-protein diet on growth, antioxidant capacity, digestive enzymes activity and expression of TOR signaling pathway associated genes in gibel carp, Carassius auratus gibelio

Soybean Glycinin Reduced Growth Performance and Antioxidant Capacity and Caused Intestinal Inflammation and Microbiome Changes in Large Yellow Croaker (Larimichthys crocea)

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