Ying Cai1, Wen Liu1, Yixuan Lin2, Shaobao Zhang3, Baorong Zou1, Dan Xiao1, Lei Lin3, Yuping Zhong2, Haihui Zheng3, Qiongfeng Liao2, Zhiyong Xie1,3,4. 1. School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou, China. 2. School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou, China. 3. School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. 4. Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Guangzhou, China.
Abstract
BACKGROUND AND AIM: Inflammatory bowel disease results from a dysregulated immune response to intestinal microbial flora in individuals with genetic predisposition(s). This study aimed to determine the effects of compound polysaccharides (CP) containing yam polysaccharide and inulin on the rat model of colitis induced by 2,4,6-trinitrobenzenesulfonic acid (TNBS) and to explain the mechanism in terms of gut microbiota composition and function. METHODS: Male SD rats were divided into three groups: the control group, the model group, and the CP group. Disease activity index, serum myeloperoxidase level, and the composition and function of gut microbiota were analyzed. RESULTS: The data in the study showed CP reduced inflammation in the rat model of colitis induced by TNBS and ameliorated the experimental colitis. The results also indicated that CP not only reversed TNBS-induced gut dysbiosis-indexed by increased short-chain fatty acids (SCFAs)-producing bacteria, lactic acid-producing bacteria, and decreased Bacteroides, Proteobacteria as well as sulfate-reducing bacteria, but also restored the dysregulated microbiota function of colitic rats into a normal condition, including an improvement on basic metabolism and a reduction on oxidative stress, cell motility, signal transduction, xenobiotics biodegradation, and metabolism as well as pathogenesis processes. CONCLUSIONS: Compound polysaccharides ameliorated the experimental colitis of rats induced by TNBS by modulating the gut microbiota composition and function profiles, which makes it possible to be used as prebiotic agents to treat gut dysbiosis in colitis individuals.
BACKGROUND AND AIM: Inflammatory bowel disease results from a dysregulated immune response to intestinal microbial flora in individuals with genetic predisposition(s). This study aimed to determine the effects of compound polysaccharides (CP) containing yam polysaccharide and inulin on the rat model of colitis induced by 2,4,6-trinitrobenzenesulfonic acid (TNBS) and to explain the mechanism in terms of gut microbiota composition and function. METHODS: Male SD rats were divided into three groups: the control group, the model group, and the CP group. Disease activity index, serum myeloperoxidase level, and the composition and function of gut microbiota were analyzed. RESULTS: The data in the study showed CP reduced inflammation in the rat model of colitis induced by TNBS and ameliorated the experimental colitis. The results also indicated that CP not only reversed TNBS-induced gut dysbiosis-indexed by increased short-chain fatty acids (SCFAs)-producing bacteria, lactic acid-producing bacteria, and decreased Bacteroides, Proteobacteria as well as sulfate-reducing bacteria, but also restored the dysregulated microbiota function of colitic rats into a normal condition, including an improvement on basic metabolism and a reduction on oxidative stress, cell motility, signal transduction, xenobiotics biodegradation, and metabolism as well as pathogenesis processes. CONCLUSIONS: Compound polysaccharides ameliorated the experimental colitis of rats induced by TNBS by modulating the gut microbiota composition and function profiles, which makes it possible to be used as prebiotic agents to treat gut dysbiosis in colitis individuals.