期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 195, 期 -, 页码 142-151出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.12.042
关键词
Atracylodes macrocephalae; Polysaccharides; Intestinal barrier function; Gut microbiota
资金
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province [202103]
- National Natural Science Foundation of China [32022079]
- Zhejiang Provincial Natural Science Foundation of China [LZ20C170005]
- Fundamental Research Funds for the Central Universities [2020-KYY-517102-0001]
The water-soluble polysaccharides AMP from Atractylodes macrocephalae Koidz. have protective effects on intestinal mucosal barrier injury induced by DSS in mice. AMP alleviates body weight decreases, shortens colon length, ameliorates colonic damage, decreases proinflammatory cytokines, and modulates intestinal microbiota to increase beneficial bacteria ratio.
In the present research, the water-soluble polysaccharides (AMP) from Atractylodes macrocephalae Koidz. were isolated and prepared. The protective effects of AMP on intestinal mucosal barrier injury induced by dextran sulfate sodium (DSS) in mice were investigated. It was found that AMP treatment significantly alleviated the body weight decreases and shorten colon length, and ameliorated colonic damage induced by DSS. Importantly, AMP prevented the over-expression of proinflammatory cytokines TNF-alpha, IL-1 beta and IL-6, and decreased the infiltration of neutrophils in colon. Additionally, AMP could raise expressions of Mucin 2 and tight junction protein Claudin-1. AMP also modulated the intestinal microbiota by enhancing the overall richness and diversity, greatly reducing the proportion of harmful bacteria, for instance, Clostridium sensu stricto 1 and Escherichia Shigella, however, augmenting the ratio of potential beneficial bacteria such as Faecalibaculum and Bifidobacterium. This work offers some important insights on protective effects of polysaccharides AMP against intestinal barrier dysfunction and provides underlying mechanism of health-beneficial properties of these biological macromolecules.
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