Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 248, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2023.125919
Keywords
Gastrodia elata polysaccharide; DSS-induced IBD; Gut microbiota; Metabolomics
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Inflammatory bowel disease (IBD) is a chronic gastrointestinal disease with an imbalance in gut microbiota as a critical factor in its development. Gastrodia elata polysaccharides (GBP) have shown anti-inflammatory properties and potential for ameliorating IBD. In a study on DSS-induced IBD mice, GBP demonstrated the best therapeutic effect by reducing IBD symptoms and modulating the gut microbiota composition and metabolism. Investigation into the metabolic regulation of the gut microbiota provides a promising approach to evaluate the therapeutic effect of GBP on IBD.
Inflammatory bowel disease (IBD) is a chronic inflammatory gastrointestinal disease, and an imbalance in the gut microbiota is a critical factor in its development. Gastrodia elata (G. elata), an Orchidaceae plant, is recognized for its nutritional and medicinal value. Studies have shown that G. elata polysaccharides (GBP) have antiinflammatory properties that may ameliorate IBD. However, the therapeutic effects of GBP on gut microbiota metabolism remain unknown. Therefore, we aimed to examine the therapeutic potential of G. elata extract and GBP in dextran sulfate sodium (DSS)-induced IBD mice. GBP demonstrated the best therapeutic effect by reducing IBD symptoms in mice to the greatest extent. Administering GBP resulted in significant increases in the relative abundances of bacteria with potential anti-inflammatory effects, such as Ligilactobacillus and Alloprevotella, and decreases in the levels of bacteria associated with proinflammatory responses, such as Bacteroides and Escherichia-Shigella. Furthermore, 36 significant differential metabolites between the model and GBP groups were identified in feces, which were mainly enriched in amino acid metabolism, including tryptophan and cysteine, vitamin B6 metabolism and steroid hormone biosynthesis. Consequently, investigating the metabolic regulation of the gut microbiota is a promising approach to evaluate the therapeutic effect of GBP on IBD.
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