Ginger polysaccharide alleviates the effects of acute exposure to carbonate in crucian carp (Carassius auratus) by regulating immunity, intestinal microbiota, and intestinal metabolism
文献类型: 外文期刊
作者: Meng, Xianwei 1 ; Luo, Liang 1 ; Zhao, Zhigang 1 ; Wang, Shihui 1 ; Zhang, Rui 1 ; Guo, Kun 1 ;
作者机构: 1.Chinese Acad Fishery Sci, Heilongjiang River Fishery Res Inst, Key Lab Cold Water Fish Germplasm Resources & Mult, Harbin 150070, Peoples R China
2.Harbin Univ Commerce, Ctr Pharmaceut Engn & Technol, Harbin 150076, Peoples R China
3.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, 43 Songfa St, Harbin 150070, Peoples R China
关键词: Ginger polysaccharide; Carassius auratus; Carbonate alkalinity stress; Intestinal microbiota; Intestinal metabolism
期刊名称:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ( 影响因子:6.8; 五年影响因子:6.9 )
ISSN: 0147-6513
年卷期: 2024 年 273 卷
页码:
收录情况: SCI
摘要: Alkaline stress poses a significant challenge to the healthy growth of fish. Ginger polysaccharide (GP) is one of the main active substances in ginger and has pharmacological effects, such as anti-oxidation and immune regulation. However, the physiological regulatory mechanism of GP addition to diet on alkalinity stress in crucian carp remains unclear. This study aimed to investigate the potential protective effects of dietary GP on antioxidant capacity, gene expression levels, intestinal microbiome, and metabolomics of crucian carp exposed to carbonate (NaHCO3). The CK group (no GP supplementation) and COG group (NaHCO3 stress and no GP supplementation) were set up. The GPCS group (NaHCO3 stress and 0.4% GP supplementation) was stressed for seven days. Based on these data, GP significantly increased the activities of total antioxidant capacity (T-AOC), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-PX), acid phosphatase (ACP), and alkaline phosphatase (AKP) in carp under alkalinity stress (p < 0.05) and decreased the activity of malon dialdehyde (MDA) (p < 0.05). GP restored the activity of GSH-PX, ACP, and AKP to CK levels. The expression levels of tumor necrosis factor beta (TGF-beta), tumor necrosis factor-alpha (TNF-alpha), interferon-gamma (IFN-gamma), and interleukin 8 (IL-8) genes were decreased, and the expression levels of determination factor kappa-B (NF-kappa B) and interleukin 10 (IL-10) genes were increased (p < 0.05). Based on 16 S rRNA high-throughput sequencing, GP improved the changes in the intestinal microbial diversity and structural composition of crucian carp caused by NaHCO3 exposure. In particular, GP increased the relative abundance of Proteobacteria and Bacteroidetes and decreased the relative abundance of Actinobacteria. The metabolic response of GP to NaHCO3 exposed crucian carp guts was studied using LC/MS. Compared to the COG group, the GPCS group had 64 different metabolites and enriched 10 metabolic pathways, including lipid metabolism, nucleotide metabolism, and carbohydrate metabolism. The addition of GP to feed can promote galactose metabolism and provide an energy supply to crucian carp, thus alleviating the damage induced by alkalinity stress. In conclusion, GP can mitigate the effects of NaHCO3 alkalinity stress by regulating immune function, intestinal flora, and intestinal metabolism in crucian carp. These findings provide a novel idea for studying the mechanism of salt-alkali tolerance in crucian carp by adding GP to feed.
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