The Role of Gut Microbiota on Intestinal Fibrosis in Inflammatory Bowel Disease and Traditional Chinese Medicine Intervention

Leyao Fang,1– 3 Huiyi Peng,1– 3 Zhoujin Tan,2,3 Na Deng,2,3 Xinxin Peng1,2 1The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, People’s Republic of China; 2The Domestic First-Class Discipline Construction Project of Chinese Medicine of Hunan University of Chinese Medicine, Changsha, People’s Republic of China; 3School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, People’s Republic of ChinaCorrespondence: Na Deng, School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, 410208, People’s Republic of China, Email [email protected] Xinxin Peng, The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, People’s Republic of China, Email [email protected]: Inflammatory bowel disease (IBD) is a chronic, relapsing inflammatory disorder of the intestine, frequently complicated by intestinal fibrosis. As fibrosis progresses, it can result in luminal stricture and compromised intestinal function, significantly diminishing patients’ quality of life. Emerging evidence suggests that gut microbiota and their metabolites contribute to the pathogenesis of IBD-associated intestinal fibrosis by influencing inflammation and modulating immune responses. This review systematically explores the mechanistic link between gut microbiota and intestinal fibrosis in IBD and evaluates the therapeutic potential of traditional Chinese medicine (TCM) interventions. Relevant studies were retrieved from PubMed, Web of Science, Embase, Scopus, CNKI, Wanfang, and VIP databases. Findings indicate that TCM, including Chinese herbal prescriptions and bioactive constituents, can modulate gut microbiota composition and microbial metabolites, ultimately alleviating intestinal fibrosis through anti-inflammatory, immunemodulatory, and anti-fibrotic mechanisms. These insights highlight the potential of TCM as a promising strategy for targeting gut microbiota in the management of IBD-associated fibrosis.Keywords: inflammatory bowel disease, intestinal fibrosis, intestinal inflammation, gut microbiota, traditional Chinese medicine